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Harris E. Meta-Analysis: "Limited" Benefits to Rapid Viral Tests in EDs. JAMA 2024; 331:1355. [PMID: 38578619 DOI: 10.1001/jama.2024.4496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
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Wang Y, Li Y, Wang X, Niu Z, Zhou L. Diagnostic value of coagulation index and serum inflammatory cytokines in hemorrhagic stroke patients with pulmonary infection in the sequelae stage. Technol Health Care 2024; 32:1383-1391. [PMID: 37661900 DOI: 10.3233/thc-230345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
BACKGROUND Stroke is the second reason for global deaths and a major reason for disabilities. OBJECTIVE To unravel the clinical value of the coagulation index and serum inflammatory cytokines in hemorrhagic stroke patients with pulmonary infection in the sequelae stage. METHODS Altogether, 130 hemorrhagic stroke patients who received treatment in Hebei General Hospital from April 2019 to December 2020 were selected. Patients were classified into the infection group (n= 65) and non-infection group (n= 65) according to whether they had a pulmonary infection in the sequelae stage of hemorrhagic stroke. Levels of coagulation index and serum inflammatory cytokines of patients in two groups were compared. Multiple linear regression analysis was used to analyze pulmonary infection-related factors of hemorrhagic stroke patients. The diagnostic value of the coagulation index and serum inflammatory cytokines in pulmonary infection was analyzed by the receiver operating characteristic (ROC) curve. RESULTS Prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB), D-dimer (D-D), platelet (PLT) related to coagulation function levels and interleukin 1β (IL-1β), interleukin 17 (IL-17) related to serum inflammatory cytokines levels of patients in the infection group were higher than those in non-infection groups (p< 0.05). Multiple linear regression analysis uncovered that FIB, D-D, PLT, and IL-17 were influencing factors of pulmonary infection in the sequelae of patients with hemorrhagic stroke (p< 0.05). Area under the curve (AUC) values of pulmonary infection in the sequelae stage of patients with hemorrhagic stroke diagnosed by FIB, D-D, PLT, and IL-17 were 0.823, 0.758, 0.660, and 0.755, respectively. CONCLUSION FIB, D-D, PLT, and IL-17 levels could be used for pulmonary infection diagnosis in the sequelae stage of hemorrhagic stroke patients.
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Affiliation(s)
- Yanxia Wang
- Department of Infectious Diseases, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Yaqing Li
- Department of Infectious Diseases, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Xiaoqing Wang
- Department of Infectious Diseases, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Zhancong Niu
- Department of Infectious Diseases, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Lixia Zhou
- Clinical Laboratory, Hebei General Hospital, Shijiazhuang, Hebei, China
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Falsey AR, Williams K, Gymnopoulou E, Bart S, Ervin J, Bastian AR, Menten J, De Paepe E, Vandenberghe S, Chan EKH, Sadoff J, Douoguih M, Callendret B, Comeaux CA, Heijnen E. Efficacy and Safety of an Ad26.RSV.preF-RSV preF Protein Vaccine in Older Adults. N Engl J Med 2023; 388:609-620. [PMID: 36791161 DOI: 10.1056/nejmoa2207566] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
BACKGROUND Respiratory syncytial virus (RSV) can cause serious lower respiratory tract disease in older adults, but no licensed RSV vaccine currently exists. An adenovirus serotype 26 RSV vector encoding a prefusion F (preF) protein (Ad26.RSV.preF) in combination with RSV preF protein was previously shown to elicit humoral and cellular immunogenicity. METHODS We conducted a randomized, double-blind, placebo-controlled, phase 2b, proof-of-concept trial to evaluate the efficacy, immunogenicity, and safety of an Ad26.RSV.preF-RSV preF protein vaccine. Adults who were 65 years of age or older were randomly assigned in a 1:1 ratio to receive vaccine or placebo. The primary end point was the first occurrence of RSV-mediated lower respiratory tract disease that met one of three case definitions: three or more symptoms of lower respiratory tract infection (definition 1), two or more symptoms of lower respiratory tract infection (definition 2), and either two or more symptoms of lower respiratory tract infection or one or more symptoms of lower respiratory tract infection plus at least one systemic symptom (definition 3). RESULTS Overall, 5782 participants were enrolled and received an injection. RSV-mediated lower respiratory tract disease meeting case definitions 1, 2, and 3 occurred in 6, 10, and 13 vaccine recipients and in 30, 40, and 43 placebo recipients, respectively. Vaccine efficacy was 80.0% (94.2% confidence interval [CI], 52.2 to 92.9), 75.0% (94.2% CI, 50.1 to 88.5), and 69.8% (94.2% CI, 43.7 to 84.7) for case definitions 1, 2, and 3, respectively. After vaccination, RSV A2 neutralizing antibody titers increased by a factor of 12.1 from baseline to day 15, a finding consistent with other immunogenicity measures. Percentages of participants with solicited local and systemic adverse events were higher in the vaccine group than in the placebo group (local, 37.9% vs. 8.4%; systemic, 41.4% vs. 16.4%); most adverse events were mild to moderate in severity. The frequency of serious adverse events was similar in the vaccine group and the placebo group (4.6% and 4.7%, respectively). CONCLUSIONS In adults 65 years of age or older, Ad26.RSV.preF-RSV preF protein vaccine was immunogenic and prevented RSV-mediated lower respiratory tract disease. (Funded by Janssen Vaccines and Prevention; CYPRESS ClinicalTrials.gov number, NCT03982199.).
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Affiliation(s)
- Ann R Falsey
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Kristi Williams
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Efi Gymnopoulou
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Stephan Bart
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - John Ervin
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Arangassery R Bastian
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Joris Menten
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Els De Paepe
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Sjouke Vandenberghe
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Eric K H Chan
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Jerald Sadoff
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Macaya Douoguih
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Benoit Callendret
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Christy A Comeaux
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
| | - Esther Heijnen
- From the University of Rochester School of Medicine, Rochester, NY (A.R.F.); Janssen Vaccines and Prevention, Leiden, the Netherlands (K.W., A.R.B., J.S., M.D., B.C., C.A.C., E.H.); Janssen Infectious Diseases, Beerse, Belgium (E.G., J.M., E.D.P., S.V.); Trial Professionals Consultant Group, Woodstock, MD (S.B.); AMR Kansas City, Kansas City, MO (J.E.); and Janssen Global Services, Raritan, NJ (E.K.H.C.)
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Duan S, Gu X, Fan G, Zhou F, Zhu G, Cao B. C-reactive protein or procalcitonin combined with rhinorrhea for discrimination of viral from bacterial infections in hospitalized adults in non-intensive care units with lower respiratory tract infections. BMC Pulm Med 2021; 21:308. [PMID: 34583675 PMCID: PMC8478003 DOI: 10.1186/s12890-021-01672-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/13/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Whether procalcitonin (PCT) or C-reactive protein (CRP) combined with certain clinical characteristics can better distinguish viral from bacterial infections remains unclear. The aim of the study was to assess the ability of PCT or CRP combined with clinical characteristics to distinguish between viral and bacterial infections in hospitalized non-intensive care unit (ICU) adults with lower respiratory tract infection (LRTI). METHODS This was a post-hoc analysis of a randomized clinical trial previously conducted among LRTI patients. The ability of PCT, CRP and PCT or CRP combined with clinical symptoms to discriminate between viral and bacterial infection were assessed by portraying receiver operating characteristic (ROC) curves among patients with only a viral or a typical bacterial infection. RESULTS In total, 209 infected patients (viral 69%, bacterial 31%) were included in the study. When using CRP or PCT to discriminate between viral and bacterial LRTI, the optimal cut-off points were 22 mg/L and 0.18 ng/mL, respectively. When the optimal cut-off for CRP (≤ 22 mg/L) or PCT (≤ 0.18 ng/mL) combined with rhinorrhea was used to discriminate viral from bacterial LRTI, the AUCs were 0.81 (95% CI: 0.75-0.87) and 0.80 (95% CI: 0.74-0.86), which was statistically significantly better than when CRP or PCT used alone (p < 0.001). When CRP ≤ 22 mg/L, PCT ≤ 0.18 ng/mL and rhinorrhea were combined, the AUC was 0.86 (95% CI: 0.80-0.91), which was statistically significantly higher than when CRP (≤ 22 mg/L) or PCT (≤ 0.18 ng/mL) was combined with rhinorrhea (p = 0.011 and p = 0.021). CONCLUSIONS Either CRP ≤ 22 mg/L or PCT ≤ 0.18 ng/mL combined with rhinorrhea could help distinguish viral from bacterial infections in hospitalized non-ICU adults with LRTI. When rhinorrhea was combined together, discrimination ability was further improved.
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Affiliation(s)
- Shengchen Duan
- Department of Pulmonary and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaoying Gu
- Department of Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Science, Beijing, China
- National Clinical Research Center of Respiratory Diseases, Beijing, China
| | - Guohui Fan
- Department of Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
- Institute of Respiratory Medicine, Chinese Academy of Medical Science, Beijing, China
- National Clinical Research Center of Respiratory Diseases, Beijing, China
| | - Fei Zhou
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Guangfa Zhu
- Department of Pulmonary and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Bin Cao
- Institute of Respiratory Medicine, Chinese Academy of Medical Science, Beijing, China.
- National Clinical Research Center of Respiratory Diseases, Beijing, China.
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China.
- Laboratory of Clinical Microbiology and Infectious Diseases, China-Japan Friendship Hospital, Beijing, China.
- Clinical Center for Pulmonary Infections, Capital Medical University, Beijing, China.
- Tsinghua University-Peking University Joint Center for Life Sciences, East Yinghua Road, Chaoyang District, Beijing, 100029, China.
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Orysiak J, Fitzgerald JS, Malczewska-Lenczowska J, Witek K, Gajewski J, Zembron-Lacny A, Morawin B, Sitkowski D. Vitamin D and upper respiratory tract infections in young active males exposed to cold environments. Ann Agric Environ Med 2021; 28:446-451. [PMID: 34558268 DOI: 10.26444/aaem/127530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
INTRODUCTION AND OBJECTIVE Performing indoor and outdoor work in cold environments may result in various adverse effects on human health and may lead to increased risk of respiratory infection. The aim of this study was to determine the relation of vitamin D status to secretory immunoglobulin A concentration, leucocyte counts, cytokine concentrations and incidence of upper respiratory tract infection (URTI) episodes in young active men during an autumn-winter period. MATERIAL AND METHODS The effect of work in a cold microclimate was studied among 23 young active male ice hockey players during a 19-week study period. Blood and saliva samples were collected 7 times during the study period. Incidence of URTI was evaluated using WURSS 21. White blood cell, neutrophil, lymphocyte, monocyte, eosinophil and basophil counts, concentrations of 25(OH)D, C-reactive protein, cortisol, IL-1ra, IL-10, IL-1β and immunoglobulins A, M and G, were determined in the blood. Secretory immunoglobulin A, A1 and A2 and cortisol were analysed in saliva. Spearman's correlations were used to evaluate relationships between initial or final 25(OH)D concentration and URTI incidence, as well as the immune and endocrine markers. Differences in URTI episodes, immune and endocrine parameters between sufficient ( ≥20 ng·ml -1) and deficient (<20 ng ·ml -1) vitamin D status groups were compared with the Mann-Whitney test. RESULTS There were no statistically significant correlations between mucosal and blood markers or URTI incidence and initial and final 25(OH)D concentrations. Immune, endocrine and URTI variables did not differ between deficient and sufficient vitamin D status groups. CONCLUSIONS 25(OH)D concentration has no impact on mucosal and systemic immunity, nor on URTI episodes.
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Affiliation(s)
- Joanna Orysiak
- Central Institute For Labour Protection-National Research Institute, Warsaw, Poland
| | | | | | - Konrad Witek
- Institute of Sport - National Research Institute, Warsaw, Poland
| | - Jan Gajewski
- Józef Piłsudski University of Physical Education, Warsaw, Poland
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Abstract
We aimed to investigate the effects of infection on serum concentrations of different antipsychotics in inpatients with respiratory tract infections treated with psychiatric drugs, including risperidone, clozapine, quetiapine, and aripiprazole. All patients underwent therapeutic drug monitoring (TDM) and routine blood tests during infection and noninfection periods. The Wilcoxon signed-rank test was used to analyze intra-individual differences in dose-corrected serum concentrations (C/D) levels in infection and noninfection periods. To study the effects of infection intensity on drug concentrations, white blood cells (WBCs) parameters and C/D levels were analyzed by Spearman's correlation analysis using all samples. The median C/D levels of risperidone (risperidone + 9-OH, n = 36) and clozapine (n = 42) were significantly higher (P < 0.001), whereas the median C/D levels of quetiapine (n = 21) and aripiprazole (n = 13) were slightly significantly higher (P < 0.01) in infection than in noninfection period. A significant positive association between C/D levels and WBC parameters was observed for risperidone, clozapine, and quetiapine. These results indicated reduced clearance of all drugs evaluated, especially clozapine and risperidone, due to infection. Therefore, during infection in patients receiving risperidone, clozapine, quetiapine, or aripiprazole, TDM should be performed to minimize the possible adverse effects associated with elevated drug concentrations.
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Affiliation(s)
- Yuan-Yuan Zhang
- Department of Pharmacy, Hefei Fourth People's Hospital
- Psychopharmacology Research Laboratory, Anhui Mental Health Center
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Xie-Hai Zhou
- Department of Pharmacy, Hefei Fourth People's Hospital
- Psychopharmacology Research Laboratory, Anhui Mental Health Center
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Feng Shan
- Department of Pharmacy, Hefei Fourth People's Hospital
- Psychopharmacology Research Laboratory, Anhui Mental Health Center
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
| | - Jun Liang
- Department of Pharmacy, Hefei Fourth People's Hospital
- Psychopharmacology Research Laboratory, Anhui Mental Health Center
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
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Top Reads. J Immunol 2021; 206:1115. [PMID: 33685918 DOI: 10.4049/jimmunol.2190002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chen L, Li Z, Zeng T, Zhang YH, Feng K, Huang T, Cai YD. Identifying COVID-19-Specific Transcriptomic Biomarkers with Machine Learning Methods. Biomed Res Int 2021; 2021:9939134. [PMID: 34307679 PMCID: PMC8272456 DOI: 10.1155/2021/9939134] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/03/2021] [Accepted: 06/24/2021] [Indexed: 12/11/2022]
Abstract
COVID-19, a severe respiratory disease caused by a new type of coronavirus SARS-CoV-2, has been spreading all over the world. Patients infected with SARS-CoV-2 may have no pathogenic symptoms, i.e., presymptomatic patients and asymptomatic patients. Both patients could further spread the virus to other susceptible people, thereby making the control of COVID-19 difficult. The two major challenges for COVID-19 diagnosis at present are as follows: (1) patients could share similar symptoms with other respiratory infections, and (2) patients may not have any symptoms but could still spread the virus. Therefore, new biomarkers at different omics levels are required for the large-scale screening and diagnosis of COVID-19. Although some initial analyses could identify a group of candidate gene biomarkers for COVID-19, the previous work still could not identify biomarkers capable for clinical use in COVID-19, which requires disease-specific diagnosis compared with other multiple infectious diseases. As an extension of the previous study, optimized machine learning models were applied in the present study to identify some specific qualitative host biomarkers associated with COVID-19 infection on the basis of a publicly released transcriptomic dataset, which included healthy controls and patients with bacterial infection, influenza, COVID-19, and other kinds of coronavirus. This dataset was first analysed by Boruta, Max-Relevance and Min-Redundancy feature selection methods one by one, resulting in a feature list. This list was fed into the incremental feature selection method, incorporating one of the classification algorithms to extract essential biomarkers and build efficient classifiers and classification rules. The capacity of these findings to distinguish COVID-19 with other similar respiratory infectious diseases at the transcriptomic level was also validated, which may improve the efficacy and accuracy of COVID-19 diagnosis.
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Affiliation(s)
- Lei Chen
- School of Life Sciences, Shanghai University, shanghai 200444, China
- College of Information Engineering, Shanghai Maritime University, shanghai 201306, China
| | - Zhandong Li
- College of Food Engineering, Jilin Engineering Normal University, Changchun 130052, China
| | - Tao Zeng
- Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, shanghai 200031, China
| | - Yu-Hang Zhang
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - KaiYan Feng
- Department of Computer Science, Guangdong AIB Polytechnic College, Guangzhou 510507, China
| | - Tao Huang
- Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, shanghai 200031, China
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Yu-Dong Cai
- School of Life Sciences, Shanghai University, shanghai 200444, China
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Pérez-López A, Irwin A, Rodrigo C, Prat-Aymerich C. Role of C reactive protein and procalcitonin in the diagnosis of lower respiratory tract infection in children in the outpatient setting. BMJ 2021; 373:n1409. [PMID: 34117023 DOI: 10.1136/bmj.n1409] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Andrés Pérez-López
- Divison of Microbiology Sidra Medicine, Doha, Qatar
- Weill Cornell Medical College in Qatar, Doha, Qatar
| | - Adam Irwin
- UQ Centre for Clinical Research, The University of Queensland, Herston, Queensland, Australia
- Children's Health Queensland Hospital and Health Service, South Brisbane, Queensland, Australia
| | - Carlos Rodrigo
- Department of Pediatrics, Hospital Universitari Germans Trias I Pujol, Badalona, Spain
- Autonomous University of Barcelona, Badalona, Spain
| | - Cristina Prat-Aymerich
- Department of Microbiology, Hospital Universitari Germans Trias I Pujol, Badalona, Spain
- CIBER Enfermedades Respiratorias, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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Abstract
Bacterial respiratory tract infections are the hallmark of primary antibody deficiencies (PADs). Because they are also among the most common infections in healthy individuals, PADs are usually overlooked in these patients. Careful evaluation of the history, including frequency, chronicity, and presence of other infections, would help suspect PADs. This review will focus on infections in relatively common PADs, discussing diagnostic challenges, and some management strategies to prevent infections.
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Affiliation(s)
- Yesim Yilmaz Demirdag
- Division of Basic and Clinical Immunology, Department of Medicine, University of California, Irvine, Irvine, CA, United States
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McCrae C, Olsson M, Gustafson P, Malmgren A, Aurell M, Fagerås M, Da Silva CA, Cavallin A, Paraskos J, Karlsson K, Wingren C, Monk P, Marsden R, Harrison T. INEXAS: A Phase 2 Randomized Trial of On-demand Inhaled Interferon Beta-1a in Severe Asthmatics. Clin Exp Allergy 2021; 51:273-283. [PMID: 33091192 PMCID: PMC7984268 DOI: 10.1111/cea.13765] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/18/2020] [Accepted: 10/17/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Upper respiratory tract infections (URTIs) are important triggers for asthma exacerbations. We hypothesized that inhalation of the anti-viral cytokine, interferon (IFN)-β, during URTI, could prevent these exacerbations. OBJECTIVE To evaluate the efficacy of on-demand inhaled IFN-β1a (AZD9412) to prevent severe asthma exacerbations following symptomatic URTI. METHODS This was a randomized, double-blind, placebo-controlled trial in which patients with severe asthma (GINA 4-5; n = 121) reporting URTI symptoms were randomized to 14 days of once-daily nebulized AZD9412 or placebo. The primary endpoint was severe exacerbations during treatment. Secondary endpoints included 6-item asthma control questionnaire (ACQ-6) and lung function. Exploratory biomarkers included IFN-response markers in serum and sputum, blood leucocyte counts and serum inflammatory cytokines. RESULTS Following a pre-planned interim analysis, the trial was terminated early due to an unexpectedly low exacerbation rate. Asthma worsenings were generally mild and tended to peak at randomization, possibly contributing to the lack of benefit of AZD9412 on other asthma endpoints. Numerically, AZD9412 did not reduce severe exacerbation rate, ACQ-6, asthma symptom scores or reliever medication use. AZD9412 improved lung function (morning peak expiratory flow; mPEF) by 19.7 L/min. Exploratory post hoc analyses indicated a greater mPEF improvement by AZD9412 in patients with high blood eosinophils (>0.3 × 109 /L) at screening and low serum interleukin-18 relative change at pre-treatment baseline. Pharmacodynamic effect of AZD9412 was confirmed using IFN-response markers. CONCLUSIONS & CLINICAL RELEVANCE Colds did not have the impact on asthma patients that was expected and, due to the low exacerbation rate, the trial was stopped early. On-demand AZD9412 treatment did not numerically reduce the number of exacerbations, but did attenuate URTI-induced worsening of mPEF. Severe asthma patients with high blood eosinophils or low serum interleukin-18 response are potential subgroups for further investigation of inhaled IFN-β1a.
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Affiliation(s)
- Christopher McCrae
- Translational Science and Experimental Medicine, Research and Early DevelopmentRespiratory & Immunology, BioPharmaceuticals R&DAstraZenecaGaithersburgMarylandUSA
- Krefting Research CentreDepartment of Internal Medicine and Clinical NutritionInstitute of MedicineUniversity of GothenburgGothenburgSweden
| | - Marita Olsson
- Early Biometrics and Statistical InnovationData Science and AI, BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Per Gustafson
- BioPharmaceutical MedicalAstraZenecaGothenburgSweden
| | - Anna Malmgren
- Early Respiratory & Immunology Projects DepartmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Malin Aurell
- Early Respiratory & Immunology Clinical DevelopmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Malin Fagerås
- BioPharmaceutical MedicalAstraZenecaGothenburgSweden
| | - Carla A. Da Silva
- Early Respiratory & Immunology Clinical DevelopmentBioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Anders Cavallin
- Translational Science and Experimental MedicineEarly Cardiovascular, Renal and Metabolism (CVRM)BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Jonathan Paraskos
- Point of Care Diagnostics, Precision MedicineOncology R&DAstraZenecaCambridgeUK
| | - Karin Karlsson
- Translational Science and Experimental MedicineEarly Cardiovascular, Renal and Metabolism (CVRM)BioPharmaceuticals R&DAstraZenecaGothenburgSweden
| | - Cecilia Wingren
- Translational Science and Experimental Medicine, Research and Early DevelopmentRespiratory & Immunology, BioPharmaceuticals R&DAstraZenecaGaithersburgMarylandUSA
| | - Phillip Monk
- Synairgen Research LtdSouthampton University HospitalSouthamptonUK
| | - Richard Marsden
- Synairgen Research LtdSouthampton University HospitalSouthamptonUK
| | - Tim Harrison
- Nottingham NIHR Biomedical Research CentreUniversity of NottinghamNottingham City HospitalNottinghamUK
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12
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di Filippo L, Formenti AM, Doga M, Frara S, Rovere-Querini P, Bosi E, Carlucci M, Giustina A. Hypocalcemia is a distinctive biochemical feature of hospitalized COVID-19 patients. Endocrine 2021; 71:9-13. [PMID: 33165763 PMCID: PMC7649576 DOI: 10.1007/s12020-020-02541-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 02/08/2023]
Affiliation(s)
- Luigi di Filippo
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Anna Maria Formenti
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Mauro Doga
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Stefano Frara
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy
| | - Patrizia Rovere-Querini
- Vita-Salute San Raffaele University and Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Hospital, Milan, Italy
| | - Emanuele Bosi
- Vita-Salute San Raffaele University and Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Hospital, Milan, Italy
| | - Michele Carlucci
- Emergency Department, IRCCS San Raffaele Scientific Hospital, Milan, Italy
| | - Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy.
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13
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Avanzato VA, Matson MJ, Seifert SN, Pryce R, Williamson BN, Anzick SL, Barbian K, Judson SD, Fischer ER, Martens C, Bowden TA, de Wit E, Riedo FX, Munster VJ. Case Study: Prolonged Infectious SARS-CoV-2 Shedding from an Asymptomatic Immunocompromised Individual with Cancer. Cell 2020; 183:1901-1912.e9. [PMID: 33248470 PMCID: PMC7640888 DOI: 10.1016/j.cell.2020.10.049] [Citation(s) in RCA: 511] [Impact Index Per Article: 127.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/13/2020] [Accepted: 10/28/2020] [Indexed: 12/15/2022]
Abstract
Long-term severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) shedding was observed from the upper respiratory tract of a female immunocompromised individual with chronic lymphocytic leukemia and acquired hypogammaglobulinemia. Shedding of infectious SARS-CoV-2 was observed up to 70 days, and of genomic and subgenomic RNA up to 105 days, after initial diagnosis. The infection was not cleared after the first treatment with convalescent plasma, suggesting a limited effect on SARS-CoV-2 in the upper respiratory tract of this individual. Several weeks after a second convalescent plasma transfusion, SARS-CoV-2 RNA was no longer detected. We observed marked within-host genomic evolution of SARS-CoV-2 with continuous turnover of dominant viral variants. However, replication kinetics in Vero E6 cells and primary human alveolar epithelial tissues were not affected. Our data indicate that certain immunocompromised individuals may shed infectious virus longer than previously recognized. Detection of subgenomic RNA is recommended in persistently SARS-CoV-2-positive individuals as a proxy for shedding of infectious virus.
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MESH Headings
- Aged
- Antibodies, Viral/blood
- Antibodies, Viral/immunology
- COVID-19/complications
- COVID-19/immunology
- COVID-19/virology
- Common Variable Immunodeficiency/blood
- Common Variable Immunodeficiency/complications
- Common Variable Immunodeficiency/immunology
- Common Variable Immunodeficiency/virology
- Female
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/complications
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/virology
- Respiratory Tract Infections/blood
- Respiratory Tract Infections/complications
- Respiratory Tract Infections/immunology
- Respiratory Tract Infections/virology
- SARS-CoV-2/immunology
- SARS-CoV-2/isolation & purification
- SARS-CoV-2/pathogenicity
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Affiliation(s)
- Victoria A Avanzato
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA; Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - M Jeremiah Matson
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA; Marshall University Joan C. Edwards School of Medicine, Huntington, WV 25701, USA
| | - Stephanie N Seifert
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Rhys Pryce
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Brandi N Williamson
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Sarah L Anzick
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Kent Barbian
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Seth D Judson
- Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Elizabeth R Fischer
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Craig Martens
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | - Thomas A Bowden
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Emmie de Wit
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA
| | | | - Vincent J Munster
- Laboratory of Virology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA.
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14
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McClain MT, Constantine FJ, Nicholson BP, Nichols M, Burke TW, Henao R, Jones DC, Hudson LL, Jaggers LB, Veldman T, Mazur A, Park LP, Suchindran S, Tsalik EL, Ginsburg GS, Woods CW. A blood-based host gene expression assay for early detection of respiratory viral infection: an index-cluster prospective cohort study. Lancet Infect Dis 2020; 21:396-404. [PMID: 32979932 PMCID: PMC7515566 DOI: 10.1016/s1473-3099(20)30486-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 05/07/2020] [Accepted: 05/14/2020] [Indexed: 01/31/2023]
Abstract
Background Early and accurate identification of individuals with viral infections is crucial for clinical management and public health interventions. We aimed to assess the ability of transcriptomic biomarkers to identify naturally acquired respiratory viral infection before typical symptoms are present. Methods In this index-cluster study, we prospectively recruited a cohort of undergraduate students (aged 18–25 years) at Duke University (Durham, NC, USA) over a period of 5 academic years. To identify index cases, we monitored students for the entire academic year, for the presence and severity of eight symptoms of respiratory tract infection using a daily web-based survey, with symptoms rated on a scale of 0–4. Index cases were defined as individuals who reported a 6-point increase in cumulative daily symptom score. Suspected index cases were visited by study staff to confirm the presence of reported symptoms of illness and to collect biospecimen samples. We then identified clusters of close contacts of index cases (ie, individuals who lived in close proximity to index cases, close friends, and partners) who were presumed to be at increased risk of developing symptomatic respiratory tract infection while under observation. We monitored each close contact for 5 days for symptoms and viral shedding and measured transcriptomic responses at each timepoint each day using a blood-based 36-gene RT-PCR assay. Findings Between Sept 1, 2009, and April 10, 2015, we enrolled 1465 participants. Of 264 index cases with respiratory tract infection symptoms, 150 (57%) had a viral cause confirmed by RT-PCR. Of their 555 close contacts, 106 (19%) developed symptomatic respiratory tract infection with a proven viral cause during the observation window, of whom 60 (57%) had the same virus as their associated index case. Nine viruses were detected in total. The transcriptomic assay accurately predicted viral infection at the time of maximum symptom severity (mean area under the receiver operating characteristic curve [AUROC] 0·94 [95% CI 0·92–0·96]), as well as at 1 day (0·87 [95% CI 0·84–0·90]), 2 days (0·85 [0·82–0·88]), and 3 days (0·74 [0·71–0·77]) before peak illness, when symptoms were minimal or absent and 22 (62%) of 35 individuals, 25 (69%) of 36 individuals, and 24 (82%) of 29 individuals, respectively, had no detectable viral shedding. Interpretation Transcriptional biomarkers accurately predict and diagnose infection across diverse viral causes and stages of disease and thus might prove useful for guiding the administration of early effective therapy, quarantine decisions, and other clinical and public health interventions in the setting of endemic and pandemic infectious diseases. Funding US Defense Advanced Research Projects Agency.
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Affiliation(s)
- Micah T McClain
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA; Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA.
| | - Florica J Constantine
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | | | - Marshall Nichols
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Thomas W Burke
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Ricardo Henao
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | | | - Lori L Hudson
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - L Brett Jaggers
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - Timothy Veldman
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Anna Mazur
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Lawrence P Park
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA
| | - Sunil Suchindran
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Ephraim L Tsalik
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA; Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA
| | - Geoffrey S Ginsburg
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA
| | - Christopher W Woods
- Center for Applied Genomics and Precision Medicine, Duke University Medical Center, Durham, NC, USA; Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA
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15
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DeSear KE, Thompson-Leduc P, Kirson N, Chritton JJ, Ie S, Van Schooneveld TC, Cheung HC, Ou S, Schuetz P. ProCommunity: procalcitonin use in real-world US community hospital settings. Curr Med Res Opin 2020; 36:1529-1532. [PMID: 32643964 DOI: 10.1080/03007995.2020.1793748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Procalcitonin (PCT) is a biomarker that may help providers optimize antibiotic (AB) therapy. Numerous clinical trials have demonstrated the utility of PCT-guided decision algorithms in treating lower respiratory tract infections and sepsis, but evidence from real-world studies is limited. This study sought to evaluate the effects of PCT on select clinical outcomes in community hospitals. METHODS An observational, retrospective, case-control study was conducted. Hospitals from a large US hospital system were categorized into "treatment" and "control" hospitals. Treatment hospitals were those with in-house PCT testing, a pharmacy team tasked with PCT testing follow-up and results in the patient's electronic medical records alongside a recommendation on AB treatment. Control hospitals either did not have PCT testing available in house or sent out tests to a laboratory or neighboring facility. Patients from treatment hospitals were matched 1:1 to patients from control hospitals based on admission diagnosis code, sex, age and whether an intensive care unit admission was observed. Clinical outcomes included number of days of AB treatment, length of stay, 30 day readmissions, mortality and acute kidney injury. Comparisons were conducted using multivariable regressions accounting for clustering at the hospital level. RESULTS Patients from treatment hospitals had significantly shorter hospital stays (-0.68 days, 95% CI: -1.26, -0.09; p = .02). A reduction in days of AB treatment (-1.50 days, 95% CI: -3.27, 0.27; p = .10) was observed, but did not reach statistical significance. CONCLUSION These findings suggest that PCT, along with specific treatment recommendations, may lead to shortened hospital stays with no adverse outcome on patient safety.
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Affiliation(s)
| | | | | | | | - Sue Ie
- Community Health Systems PSC LLC, Franklin, TN, USA
| | | | | | - Susan Ou
- Analysis Group Inc., Boston, MA, USA
| | - Philipp Schuetz
- Medical University Department, Kantonsspital Aarau and Faculty at the University of Basel, Aarau, Switzerland
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16
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Abstract
BACKGROUND Pentraxin 3 is an acute inflammatory protein of the long pentraxin subfamily. A meta-analysis was performed to assess diagnostic accuracy of pentraxin 3 for respiratory tract infections. METHODS We identify studies examining diagnostic value of pentraxin 3 for respiratory tract infections by searching Pubmed, Web of Knowledge, and Cochrane Library. The sensitivity, specificity, negative likelihood ratio (LR), positive LR, and diagnostic odds ratio were pooled. The area under the summary receiver operator characteristic (SROC) curve and Q point value (Q*) were calculated. RESULTS A total of 8 studies with 961 individuals were eligible for this meta-analysis. The pooled sensitivity of pentraxin 3 in diagnosis of respiratory tract infections was 0.78, the pooled specificity was 0.73, the area under the SROC curve was 0.84, and the Q* was 0.77. The area under the SROC curve of serum and bronchoalveolar lavage fluid (BALF) pentraxin 3 was 0.85 and 0.89, respectively. Meta-regression analysis revealed that cutoff value was the source of heterogeneity among the included studies. The Deek funnel plot test suggested no evidence of publication bias. Subgroup analyses showed that the area under the SROC curve of pentraxin 3 in diagnosis of ventilator-associated pneumonia (VAP) was 0.89. CONCLUSION Pentraxin 3 has a moderate accuracy for diagnosing respiratory tract infections and VAP. The overall diagnostic value of BALF level of pentraxin 3 is superior to its serum concentration.
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17
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Varela-Patiño M, Lopez-Izquierdo R, Velayos-Garcia P, Alvarez-Manzanares J, Ramos-Sanchez C, Carbajosa-Rodriguez V, Martin-Rodriguez F, Eiros JM. Usefulness of infection biomarkers for diagnosing bacteremia in patients with a sepsis code in the emergency department. Infez Med 2020; 28:29-36. [PMID: 32172258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The objective of this study was to assess the usefulness of the biomarkers lactate, C-reactive protein (CPR) and procalcitonin for the diagnosis of bacteremia in patients with suspected sepsis in the emergency department (ED) and according to the focus of infection. We conducted a retrospective study among patients included in the sepsis code of our ED between November 2013 and December 2017. We analyzed demographic variables, co-morbidity according to the Charlson Index and focus of infection, blood cultures and classification according to Gram staining. We determined the diagnostic performance of the biomarkers quantitatively and calculated the area under the curve (AUC) for global bacteremia and as a function of the focus of infection. We included 653 patients with a median age of 79 years (interquartile range: 66-86), of whom 287 (44.0% were women. The most frequent infectious focus was respiratory (36.1%]. Blood cultures were requested in 87.5% (569 cases). Of the tested samples, 31.3% were positive, of which 63.5% revealed Gram-negative (GN) bacteria. Procalcitonin obtained globally the best AUC 0.70 (95% CI: 0.65-0.75). The values with the best sensitivity and specificity were 2.54 ng/mL for procalcitonin, 4.1 mmol/L for lactate and 156 mg/L for CRP. We found an association between the median procalcitonin value and GN bacteria (6.02; IQR: 1.39-39.40) and Gram-positive bacteria (1.74; IQR: 0.22-15.61). Procalcitonin is the biomarker with the greatest capacity to diagnose bacteremia, particularly in GN infection. Stratification by focus is important since not all biomarkers discriminate in the same way.
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Affiliation(s)
| | - Raul Lopez-Izquierdo
- Emergency Department, University Hospital "Rio Hortega", Valladolid, Spain; Faculty of Medicine, University of Valladolid, Spain
| | | | | | | | | | | | - Jose Maria Eiros
- Microbiology Department, University Hospital "Rio Hortega", Valladolid, Spain
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18
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Piri R, Ivaska L, Yahya M, Toivonen L, Lempainen J, Kataja J, Nuolivirta K, Tripathi L, Waris M, Peltola V. Prevalence of respiratory viruses and antiviral MxA responses in children with febrile urinary tract infection. Eur J Clin Microbiol Infect Dis 2020; 39:1239-1244. [PMID: 32048070 PMCID: PMC7088029 DOI: 10.1007/s10096-020-03836-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/29/2020] [Indexed: 11/26/2022]
Abstract
Blood myxovirus resistance protein A (MxA) has broad antiviral activity, and it is a potential biomarker for symptomatic virus infections. Limited data is available of MxA in coinciding viral and bacterial infections. We investigated blood MxA levels in children hospitalized with a febrile urinary tract infection (UTI) with or without simultaneous respiratory virus infection. We conducted a prospective observational study of 43 children hospitalized with febrile UTI. Nasopharyngeal swab samples were collected at admission and tested for 16 respiratory viruses by nucleic acid detection methods. Respiratory symptoms were recorded, and blood MxA levels were determined. The median age of study children was 4 months (interquartile range, 2–14 months). A respiratory virus was detected in 17 (40%) children with febrile UTI. Of the virus-positive children with febrile UTI, 7 (41%) had simultaneous respiratory symptoms. Blood MxA levels were higher in virus-positive children with respiratory symptoms (median, 778 [interquartile range, 535–2538] μg/L) compared to either virus-negative (155 [94–301] μg/L, P < 0.001) or virus-positive (171 [112–331] μg/L, P = 0.006) children without respiratory symptoms at presentation with febrile UTI. MxA differentiated virus-positive children with respiratory symptoms from virus-negative without symptoms by an area under the receiver operating characteristic curve of 0.96. Respiratory viruses were frequently detected in children with febrile UTI. In UTI with simultaneous respiratory symptoms, host antiviral immune response was demonstrated by elevated blood MxA protein levels. MxA protein could be a robust biomarker of symptomatic viral infection in children with febrile UTI.
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Affiliation(s)
- Ruut Piri
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
| | - Lauri Ivaska
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
| | - Mohamed Yahya
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
| | - Laura Toivonen
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
| | - Johanna Lempainen
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
- Institute of Biomedicine, University of Turku and Clinical Microbiology, Turku University Hospital, Turku, Finland
| | - Janne Kataja
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland
| | - Kirsi Nuolivirta
- Department of Paediatrics, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Lav Tripathi
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Matti Waris
- Institute of Biomedicine, University of Turku and Clinical Microbiology, Turku University Hospital, Turku, Finland
| | - Ville Peltola
- Department of Paediatrics and Adolescent Medicine, Turku University Hospital and University of Turku, 20521, Turku, Finland.
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19
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Okoniewski W, Hughan KS, Weiner GA, Weiner DJ, Forno E. Glycemic control and FEV 1 recovery during pulmonary exacerbations in pediatric cystic fibrosis-related diabetes. J Cyst Fibros 2020; 19:460-465. [PMID: 31980357 DOI: 10.1016/j.jcf.2019.12.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/26/2019] [Accepted: 12/30/2019] [Indexed: 12/22/2022]
Abstract
RATIONALE Whether short-term glucose control in cystic fibrosis-related diabetes (CFRD) is associated with FEV1 recovery during acute pulmonary exacerbations is unclear. METHODS Data from all patients with CFRD ages 6-21 years hospitalized in 2010-2016 for pulmonary exacerbations at our CF Center were analyzed, including CFRD status at each encounter, all FEV1 recorded during each exacerbation, and relevant clinical covariates. Glucose control was analyzed using meter blood glucose area under the curve (AUC) indices. The primary outcome was FEV1 recovery. RESULTS Patients with CFRD who finished IV antibiotics at home were treated for longer than those fully treated in the hospital (22.2 vs. 13.8 days). In those who finished treatment at home, poor inpatient glycemic control was associated with lower lung function improvement: when comparing the 75th to the 25th percentile of each glycemic index (i.e., "poorer" vs. "better" glycemic control), FEV1 recovery at discharge was 20.1% lower for glucose AUC (95%CI -0.4%, -39.9%); 20.9% lower for 48-h AUC (95%CI -2.7%, -39.1%); and 28.2% lower for AUC/day (95%CI -7.1%, -49.3%). Similar results were found at the end of IV antibiotics and at clinic follow-up. Likewise, patients with poor glycemic control had a lower slope of inpatient FEV1 recovery. Analysis in patients with normal glucose tolerance was largely non-significant. No associations were found between hemoglobin A1c and FEV1 recovery. CONCLUSIONS In patients with CFRD who complete IV antibiotic treatment at home, poor inpatient glycemic control is associated with worse FEV1 recovery despite longer duration of treatment.
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Affiliation(s)
- William Okoniewski
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States; Division of Pulmonary Medicine, Pittsburgh, PA, United States
| | - Kara S Hughan
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States; Division of Endocrinology and Diabetes, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, United States
| | | | - Daniel J Weiner
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States; Division of Pulmonary Medicine, Pittsburgh, PA, United States
| | - Erick Forno
- Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States; Division of Pulmonary Medicine, Pittsburgh, PA, United States.
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20
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Abstract
FebriDx® is a rapid, point-of-care diagnostic test that is designed to aid in the differentiation of bacterial and viral acute respiratory infections (ARIs), thus helping to guide decisions regarding the prescription of antibiotics in the outpatient setting. FebriDx carries a CE mark for use in the EU and is also approved in several other countries, including Canada, Saudi Arabia and Singapore. It is indicated for use in patients > 2 years old with symptoms consistent with a community-acquired ARI. The test involves the use of an immunoassay on a fingerstick blood sample to provide simultaneous, qualitative measurement of elevated levels of C-reactive protein (CRP) and myxovirus resistance protein A (MxA). In two prospective, multicentre studies in patients with acute upper respiratory tract infections, FebriDx was shown to be both sensitive and specific in identifying patients with a clinically significant infection and in differentiating between infections of bacterial and viral aetiology. The test is simple, requires no additional equipment and produces actionable results in ~ 10 min. As was demonstrated in a small, retrospective analysis, FebriDx results can help guide (improve) antibiotic prescribing decisions. Reducing the unnecessary or inappropriate prescription of antibiotics for ARIs of probable viral aetiology is important for antibiotic stewardship and can also reduce the unnecessary exposure of patients to the risk of antibiotic-related adverse events. FebriDx thus represents a useful diagnostic tool in the outpatient setting.
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Affiliation(s)
- Matt Shirley
- Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
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21
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Abstract
Procalcitonin (PCT) is a biomarker that has shown promise to identify bacterial etiology in acute infections, including bacterial lower respiratory tract infection (LRTI). In 2017, the United States Food and Drug Administration (FDA) approved the use of PCT as a diagnostic aid to guide the decisions around antibiotic therapy in acute LRTI.1 Although most of the data supporting the use of PCT for LRTI stems from adult studies, the high disease burden, predominance of viral etiologies, and frequent diagnostic uncertainty resulting in antibiotic overuse make pediatric LRTI an ideal target for the use of PCT as a diagnostic aid. This review evaluates and summarizes the current evidence regarding the role of PCT in the clinical care of pediatric LRTI, including its use in guiding antibiotic use and prognosticating disease severity.
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Affiliation(s)
- Sophie E Katz
- Division of Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
- Corresponding Author: Sophie E. Katz, MD, MPH; E-mail: ; Tel: 615-343-6190
| | - Laura F Sartori
- Division of Emergency Medicine, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Derek J Williams
- Division of Hospital Medicine, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
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22
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Jerome H, Taylor C, Sreenu VB, Klymenko T, Filipe ADS, Jackson C, Davis C, Ashraf S, Wilson-Davies E, Jesudason N, Devine K, Harder L, Aitken C, Gunson R, Thomson EC. Metagenomic next-generation sequencing aids the diagnosis of viral infections in febrile returning travellers. J Infect 2019; 79:383-388. [PMID: 31398374 PMCID: PMC6859916 DOI: 10.1016/j.jinf.2019.08.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/18/2019] [Accepted: 08/03/2019] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Travel-associated infections are challenging to diagnose because of the broad spectrum of potential aetiologies. As a proof-of-principle study, we used MNGS to identify viral pathogens in clinical samples from returning travellers in a single center to explore its suitability as a diagnostic tool. METHODS Plasma samples from 40 returning travellers presenting with a fever of ≥38°C were sequenced using MNGS on the Illumina MiSeq platform and compared with standard-of-care diagnostic assays. RESULTS In total, 11/40 patients were diagnosed with a viral infection. Standard of care diagnostics revealed 5 viral infections using plasma samples; dengue virus 1 (n = 2), hepatitis E (n = 1), Ebola virus (n = 1) and hepatitis A (n = 1), all of which were detected by MNGS. Three additional patients with Chikungunya virus (n = 2) and mumps virus were diagnosed by MNGS only. Respiratory infections detected by nasal/throat swabs only were not detected by MNGS of plasma. One patient had infection with malaria and mumps virus during the same admission. CONCLUSIONS MNGS analysis of plasma samples improves the sensitivity of diagnosis of viral infections and has potential as an all-in-one diagnostic test. It can be used to identify infections that have not been considered by the treating physician, co-infections and new or emerging pathogens. SUMMARY Next generation sequencing (NGS) has potential as an all-in-one diagnostic test. In this study we used NGS to diagnose returning travellers with acute febrile illness in the UK, highlighting cases where the diagnosis was missed using standard methods.
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Affiliation(s)
- Hanna Jerome
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Callum Taylor
- Department of Infectious Diseases, Queen Elizabeth University Hospital, 1345 Govan Rd, Govan, Glasgow G51 4TF, UK
| | - Vattipally B. Sreenu
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Tanya Klymenko
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Ana Da Silva Filipe
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Celia Jackson
- West of Scotland Specialist Virology Centre, Level 5, New Lister Building, Glasgow Royal Infirmary, 10-16 Alexandra Parade, Glasgow G31 2ER, UK
| | - Chris Davis
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Shirin Ashraf
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Eleri Wilson-Davies
- West of Scotland Specialist Virology Centre, Level 5, New Lister Building, Glasgow Royal Infirmary, 10-16 Alexandra Parade, Glasgow G31 2ER, UK
| | - Natasha Jesudason
- Queen Elizabeth University Hospital, 1345 Govan Rd, Govan, Glasgow G51 4TF, UK
| | - Karen Devine
- Department of Infectious Diseases, Queen Elizabeth University Hospital, 1345 Govan Rd, Govan, Glasgow G51 4TF, UK
| | - Lisbeth Harder
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
| | - Celia Aitken
- West of Scotland Specialist Virology Centre, Level 5, New Lister Building, Glasgow Royal Infirmary, 10-16 Alexandra Parade, Glasgow G31 2ER, UK
| | - Rory Gunson
- West of Scotland Specialist Virology Centre, Level 5, New Lister Building, Glasgow Royal Infirmary, 10-16 Alexandra Parade, Glasgow G31 2ER, UK
| | - Emma C. Thomson
- MRC-University of Glasgow Centre for Virus Research, Sir Michael Stoker Building, 464 Bearsden Road, Glasgow G61 1QH, UK
- Department of Infectious Diseases, Queen Elizabeth University Hospital, 1345 Govan Rd, Govan, Glasgow G51 4TF, UK
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23
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Pham H, Rahman A, Majidi A, Waterhouse M, Neale RE. Acute Respiratory Tract Infection and 25-Hydroxyvitamin D Concentration: A Systematic Review and Meta-Analysis. Int J Environ Res Public Health 2019; 16:E3020. [PMID: 31438516 PMCID: PMC6747229 DOI: 10.3390/ijerph16173020] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/15/2019] [Accepted: 08/19/2019] [Indexed: 12/31/2022]
Abstract
Observational studies and randomised controlled studies suggest that vitamin D plays a role in the prevention of acute respiratory tract infection (ARTI); however, findings are inconsistent and the optimal serum 25-hydroxyvitamin D (25(OH)D) concentration remains unclear. To review the link between 25(OH)D concentration and ARTI, we searched PubMed and EMBASE databases to identify observational studies reporting the association between 25(OH)D concentration and risk or severity of ARTI. We used random-effects meta-analysis to pool findings across studies. Twenty-four studies were included in the review, 14 were included in the meta-analysis of ARTI risk and five in the meta-analysis of severity. Serum 25(OH)D concentration was inversely associated with risk and severity of ARTI; pooled odds ratios (95% confidence interval) were 1.83 (1.42-2.37) and 2.46 (1.65-3.66), respectively, comparing the lowest with the highest 25(OH)D category. For each 10 nmol/L decrease in 25(OH)D concentration, the odds of ARTI increased by 1.02 (0.97-1.07). This was a non-linear trend, with the sharpest increase in risk of ARTI occurring at 25(OH)D concentration < 37.5 nmol/L. In conclusion, there is an inverse non-linear association between 25(OH)D concentration and ARTI.
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Affiliation(s)
- Hai Pham
- Population Health Department, QIMR Berghofer Medical Research Institute, Herston, QL 4006, Australia.
- School of Public Health, The University of Queensland, Herston, QL 4006, Australia.
| | - Aninda Rahman
- Population Health Department, QIMR Berghofer Medical Research Institute, Herston, QL 4006, Australia
- School of Public Health, The University of Queensland, Herston, QL 4006, Australia
| | - Azam Majidi
- Population Health Department, QIMR Berghofer Medical Research Institute, Herston, QL 4006, Australia
- School of Public Health, The University of Queensland, Herston, QL 4006, Australia
| | - Mary Waterhouse
- Population Health Department, QIMR Berghofer Medical Research Institute, Herston, QL 4006, Australia
| | - Rachel E Neale
- Population Health Department, QIMR Berghofer Medical Research Institute, Herston, QL 4006, Australia
- School of Public Health, The University of Queensland, Herston, QL 4006, Australia
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24
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Khokar A, Gupta S. Clinical and Immunological Features of 78 Adult Patients with Primary Selective IgG Subclass Deficiencies. Arch Immunol Ther Exp (Warsz) 2019; 67:325-334. [PMID: 31363786 DOI: 10.1007/s00005-019-00556-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 07/23/2019] [Indexed: 11/25/2022]
Abstract
The purpose of this study is to describe both clinical and immunological features in large cohort of adult patients with IgG subclass deficiency, and response to immunoglobulin therapy. This is a retrospective study of data obtained from electronic medical records and paper charts of 78 patients with IgG subclass deficiency seen and followed at our immunology clinics from 2010 to 2016. Both isolated selective IgG subclass deficiency as well as combined (two) subclass deficiencies were observed. IgG3 subclass deficiency, isolated and in combination with other IgG subclass deficiency, is the most frequent of IgG subclass deficiency. A majority of patients presented with upper and lower respiratory tract infections, especially chronic sinusitis. Both allergic and autoimmune manifestations are common; however, there is no subclass preference. The proportions and absolute numbers of CD3+ T cells, CD4+ T and CD8+ T cells, CD19+ B cells, and CD3-CD16+CD56+ NK cells were normal in the majority of patients in all IgG subclass deficiencies. Total serum IgG levels did not correlate with IgG subclass levels across all IgG subclass deficiencies. Anti-pneumococcal polysaccharide antibody responses were impaired in 56% of patients. IgG3 subclass deficiency is the most common IgG subclass deficiency, and anti-polysaccharide antibody responses are distributed among IgG subclasses with modest preference in IgG2 subclass. The majority of patients treated with immunoglobulin responded by reduction in frequency of infections and requirement of antibiotics.
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Affiliation(s)
- Amrita Khokar
- Program in Primary Immunodeficiency and Aging, Division of Basic and Clinical Immunology, University of California at Irvine, Irvine, CA, USA
- Tuft University School of Medicine, Boston, MA, USA
| | - Sudhir Gupta
- Program in Primary Immunodeficiency and Aging, Division of Basic and Clinical Immunology, University of California at Irvine, Irvine, CA, USA.
- Medical Sciences I, C-240, University of California at Irvine, Irvine, CA, USA.
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25
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Abstract
PURPOSE OF REVIEW Eosinophils are short-lived granulocytes that contain a variety of proteins and lipids traditionally associated with host defense against parasites. The primary goal of this review is to examine more recent evidence that challenged this rather outdated role of eosinophils in the context of pulmonary infections with helminths, viruses, and bacteria. RECENT FINDINGS While eosinophil mechanisms that counter parasites, viruses, and bacteria are similar, the kinetics and impact may differ by pathogen type. Major antiparasitic responses include direct killing and immunoregulation, as well as some mechanisms by which parasite survival/growth is supported. Antiviral defenses may be as unembellished as granule protein-induced direct killing or more urbane as serving as a conduit for better adaptive immune responses to the invading virus. Although sacrificial, eosinophil DNA emitted in response to bacteria helps trap bacteria to limit dissemination. Herein, we discuss the current research redefining eosinophils as multifunctional cells that are active participants in host defense against lung pathogens. Eosinophils recognize and differentially respond to invading pathogens, allowing them to deploy innate defense mechanisms to contain and clear the infection, or modulate the immune response. Modern technology and animal models have unraveled hitherto unknown capabilities of this surreptitious cell that indubitably has more functions awaiting discovery.
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Affiliation(s)
- Kim S LeMessurier
- Department of Pediatrics, Division of Pulmonology, Allergy - Immunology, and Sleep, University of Tennessee Health Science Center, Memphis, TN, USA
- Children's Foundation Research Institute, University of Tennessee Health Science Center, Memphis, TN, 38103, USA
| | - Amali E Samarasinghe
- Department of Pediatrics, Division of Pulmonology, Allergy - Immunology, and Sleep, University of Tennessee Health Science Center, Memphis, TN, USA.
- Children's Foundation Research Institute, University of Tennessee Health Science Center, Memphis, TN, 38103, USA.
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26
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Barton J, Barton C, Bertoli L. Duration of frequent or severe respiratory tract infection in adults before diagnosis of IgG subclass deficiency. PLoS One 2019; 14:e0216940. [PMID: 31112572 PMCID: PMC6528998 DOI: 10.1371/journal.pone.0216940] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 05/01/2019] [Indexed: 02/07/2023] Open
Abstract
Many adults with IgG subclass deficiency (IgGSD) experience long intervals of frequent/severe respiratory tract infection before IgGSD diagnosis, but reasons for delays in IgGSD diagnoses are incompletely understood. We performed a retrospective study of 300 white adults (ages ≥18 y) with IgGSD including frequency analyses of age at IgGSD diagnosis, duration of frequent/severe respiratory tract infection before IgGSD diagnosis, and age at onset of frequent/severe infection (calculated). We performed multivariable regressions on age at diagnosis, infection duration, and age at infection onset using these variables, as appropriate: sex; age at diagnosis; diabetes; autoimmune condition(s); atopy; allergy; corticosteroid use; body mass index; serum immunoglobulin isotype levels; blood lymphocyte subsets; three IgGSD-associated human leukocyte antigen-A and -B haplotypes; and referring physician specialties. Mean age at diagnosis was 50 ± 12 (standard deviation) y (median 50 y (range 19–79)). There were 247 women (82.3%). Mean infection duration at IgGSD diagnosis was 12 ± 13 y (median 7 y (range 1–66)). Mean age at infection onset was 38 ± 16 y (median 38 y (range 4, 76)). Age at infection onset was ≥18 y in 95.7% of subjects. Regressions on age at diagnosis and infection duration revealed no significant associations. Regression on age at infection onset revealed one positive association: age at diagnosis (p <0.0001). We conclude that the median duration of frequent/severe respiratory tract infection in adults before IgGSD diagnosis was 7 y. Older adults may be diagnosed to have IgGSD after longer intervals of infection than younger adults. Duration of frequent/severe respiratory tract infection before IgGSD diagnosis was not significantly associated with routine clinical and laboratory variables, including referring physician specialties.
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Affiliation(s)
- James Barton
- Southern Iron Disorders Center, Birmingham, Alabama, United States of America
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Department of Medicine, Brookwood Medical Center, Birmingham, Alabama, United States of America
- * E-mail:
| | - Clayborn Barton
- Southern Iron Disorders Center, Birmingham, Alabama, United States of America
| | - Luigi Bertoli
- Southern Iron Disorders Center, Birmingham, Alabama, United States of America
- Department of Medicine, Brookwood Medical Center, Birmingham, Alabama, United States of America
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27
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Inoue S, Ikeda H. Differences in plasma amino acid levels in patients with and without bacterial infection during the early stage of acute exacerbation of COPD. Int J Chron Obstruct Pulmon Dis 2019; 14:575-583. [PMID: 30880947 PMCID: PMC6402618 DOI: 10.2147/copd.s188422] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
PURPOSE No consensus has been reached regarding appropriate nutritional intervention and rehabilitation during early acute exacerbation of COPD (AECOPD). Given the individual differences in symptoms of AECOPD, patients should be classified by their pathology. For example, it is known that there are differences in the inflammatory response between AECOPD with and without bacterial infection. However, there have been few reports on AECOPD from a nutritional perspective. The aim of this study was to investigate amino acid levels in patients with AECOPD. PATIENTS AND METHODS Blood was collected from patients who were hospitalized with AECOPD and from patients with COPD that was in a stable state. We divided the patients with AECOPD into those without bacterial infection (group A) and those with bacterial infection (group B). The patients with COPD that was stable served as controls (group C). The plasma levels of 9 essential amino acids, 13 nonessential amino acids, and total amino acids were compared between the three groups. RESULTS In the early stages of AECOPD, differences in plasma levels of only three amino acids (glycine, phenylalanine, and arginine) were observed between groups C and A. Differences in total amino acids and 13 amino acids were observed between groups C and B. Group B had lower levels of total amino acids and of seven amino acids (asparagine, citrulline, glutamine, histidine, methionine, serine, and threonine) compared with the other study groups. CONCLUSION The findings of this study show that amino acid levels in plasma differ in patients with AECOPD depending on whether or not bacterial infection is present. Our results suggest that specific amino acids (ie, asparagine, citrulline, glutamine, histidine, serine, and threonine) have potential utility as diagnostic markers to distinguish between bacterial and nonbacterial AECOPD.
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Affiliation(s)
- Saki Inoue
- Department of Nutritional Management, Sanyudo Hospital, Yonezawa, Japan
| | - Hideki Ikeda
- Pulmonary Division, Department of Internal Medicine, Sanyudo Hospital, Yonezawa, Japan,
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28
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Prentice AM, Bah A, Jallow MW, Jallow AT, Sanyang S, Sise EA, Ceesay K, Danso E, Armitage AE, Pasricha SR, Drakesmith H, Wathuo M, Kessler N, Cerami C, Wegmüller R. Respiratory infections drive hepcidin-mediated blockade of iron absorption leading to iron deficiency anemia in African children. Sci Adv 2019; 5:eaav9020. [PMID: 30944864 PMCID: PMC6436921 DOI: 10.1126/sciadv.aav9020] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
Iron deficiency anemia (IDA) is the most prevalent nutritional condition worldwide. We studied the contribution of hepcidin-mediated iron blockade to IDA in African children. We measured hepcidin and hemoglobin weekly, and hematological, inflammatory, and iron biomarkers at baseline, 7 weeks, and 12 weeks in 407 anemic (hemoglobin < 11 g/dl), otherwise healthy Gambian children (6 to 27 months). Each child maintained remarkably constant hepcidin levels (P < 0.0001 for between-child variance), with half consistently maintaining levels that indicate physiological blockade of iron absorption. Hepcidin was strongly predicted by nurse-ascribed adverse events with dominant signals from respiratory infections and fevers (all P < 0.0001). Diarrhea and fecal calprotectin were not associated with hepcidin. In multivariate analysis, C-reactive protein was the dominant predictor of hepcidin and contributed to iron blockade even at very low levels. We conclude that even low-grade inflammation, especially associated with respiratory infections, contributes to IDA in African children.
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Affiliation(s)
| | - Amat Bah
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | | | | | - Saikou Sanyang
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Ebrima A. Sise
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Kabiru Ceesay
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Ebrima Danso
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Andrew E. Armitage
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Sant-Rayn Pasricha
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Melbourne, Parkville, Victoria 3052, Australia
| | - Hal Drakesmith
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Miriam Wathuo
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Noah Kessler
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Carla Cerami
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
| | - Rita Wegmüller
- MRC Unit The Gambia at LSHTM, Atlantic Road, Fajara, The Gambia
- GroundWork, 7306 Fläsch, Switzerland
- Human Nutrition Laboratory, Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
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29
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Balmpouzis Z, Diamanti E, Kritikos A, Guery B, Nicod LP. [Systemic biomarkers in respiratory tract infections]. Rev Med Suisse 2018; 14:2074-2078. [PMID: 30427601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Respiratory tract infections represent a major cause of morbidity and mortality despite the progress made in their diagnosis and treatment. Since the clinical presentation of a viral or bacterial infection is often similar, the identification of a biomarker that could guide the clinician whether or not to introduce an antibiotic therapy is crucial. C-reactive protein and procalcitonin are the most commonly used biomarkers as a diagnostic tool for respiratory tract infections. New biomarkers show promising results for assessing the severity of infection and identifying patients at risk for complications. However, the use of biomarkers has limitations and the diagnosis of a bacterial infection should not be based solely on the measurement of a biomarker.
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Affiliation(s)
| | | | | | - Benoit Guery
- Service des maladies infectieuses, CHUV, 1011 Lausanne
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30
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Lubell Y, Do NTT, Nguyen KV, Ta NTD, Tran NTH, Than HM, Hoang LB, Shrestha P, van Doorn RH, Nadjm B, Wertheim HFL. C-reactive protein point of care testing in the management of acute respiratory infections in the Vietnamese primary healthcare setting - a cost benefit analysis. Antimicrob Resist Infect Control 2018; 7:119. [PMID: 30323922 PMCID: PMC6172744 DOI: 10.1186/s13756-018-0414-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/26/2018] [Indexed: 11/18/2022] Open
Abstract
Aim We assess the cost-benefit implications of C-reactive protein (CRP) testing in reducing antibiotic prescription for acute respiratory infection in Viet Nam by comparing the incremental costs of CRP testing with the economic costs of antimicrobial resistance averted due to lower antibiotic prescribing. Findings Patients in the CRP group and the controls incurred similar costs in managing their illness, excluding the costs of the quantitative CRP tests, provided free of charge in the trial context. Assuming a unit cost of $1 per test, the incremental cost of CRP testing was $0.93 per patient. Based on a previous modelling analysis, the 20 percentage point reduction in prescribing observed in the trial implies a societal benefit of $0.82 per patient. With the low levels of adherence to the test results observed in the trial, CRP testing would not be cost-beneficial. The sensitivity analyses showed, however, that with higher adherence to test results their use would be cost-beneficial.
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Affiliation(s)
- Yoel Lubell
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, 420/6 Rajvithi Road, Bangkok, 10400 Thailand
| | - Nga T. T. Do
- Oxford University Clinical Research Unit, Ha Noi, Viet Nam
| | - Kinh V. Nguyen
- National Hospital for Tropical Diseases, Hanoi, Viet Nam
| | - Ngan T. D. Ta
- National Hospital for Tropical Diseases, Hanoi, Viet Nam
| | | | - Hung M. Than
- National Hospital for Tropical Diseases, Hanoi, Viet Nam
| | - Long B. Hoang
- Oxford University Clinical Research Unit, Ha Noi, Viet Nam
| | - Poojan Shrestha
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Infectious Diseases Data Observatory, University of Oxford, Oxford, UK
| | - Rogier H. van Doorn
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Oxford University Clinical Research Unit, Ha Noi, Viet Nam
| | - Behzad Nadjm
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Oxford University Clinical Research Unit, Ha Noi, Viet Nam
| | - Heiman F. L. Wertheim
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Oxford University Clinical Research Unit, Ha Noi, Viet Nam
- Department of Medical Microbiology, Radboudumc Center of Infectious Diseases, Radboudumc, Nijmegen, Netherlands
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31
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Jeron A, Boehme JD, Volckmar J, Gereke M, Yevsa T, Geffers R, Guzmán CA, Schreiber J, Stegemann-Koniszewski S, Bruder D. Respiratory Bordetella bronchiseptica Carriage is Associated with Broad Phenotypic Alterations of Peripheral CD4⁺CD25⁺ T Cells and Differentially Affects Immune Responses to Secondary Non-Infectious and Infectious Stimuli in Mice. Int J Mol Sci 2018; 19:E2602. [PMID: 30200513 PMCID: PMC6165163 DOI: 10.3390/ijms19092602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/03/2018] [Accepted: 08/28/2018] [Indexed: 01/05/2023] Open
Abstract
The respiratory tract is constantly exposed to the environment and displays a favorable niche for colonizing microorganisms. However, the effects of respiratory bacterial carriage on the immune system and its implications for secondary responses remain largely unclear. We have employed respiratory carriage with Bordetella bronchiseptica as the underlying model to comprehensively address effects on subsequent immune responses. Carriage was associated with the stimulation of Bordetella-specific CD4⁺, CD8⁺, and CD4⁺CD25⁺Foxp3⁺ T cell responses, and broad transcriptional activation was observed in CD4⁺CD25⁺ T cells. Importantly, transfer of leukocytes from carriers to acutely B. bronchiseptica infected mice, resulted in a significantly increased bacterial burden in the recipient's upper respiratory tract. In contrast, we found that respiratory B. bronchiseptica carriage resulted in a significant benefit for the host in systemic infection with Listeria monocytogenes. Adaptive responses to vaccination and influenza A virus infection, were unaffected by B. bronchiseptica carriage. These data showed that there were significant immune modulatory processes triggered by B. bronchiseptica carriage, that differentially affect subsequent immune responses. Therefore, our results demonstrated the complexity of immune regulation induced by respiratory bacterial carriage, which can be beneficial or detrimental to the host, depending on the pathogen and the considered compartment.
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Affiliation(s)
- Andreas Jeron
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Julia D Boehme
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Julia Volckmar
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Marcus Gereke
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Tetyana Yevsa
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Robert Geffers
- Genome Analytics Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Carlos A Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
| | - Jens Schreiber
- Experimental Pneumology, University Hospital for Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
| | - Sabine Stegemann-Koniszewski
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
- Experimental Pneumology, University Hospital for Pneumology, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
| | - Dunja Bruder
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control and Prevention, Health Campus Immunology, Infectiology and Inflammation, Otto-von-Guericke University Magdeburg, 39120 Magdeburg, Germany.
- Immune Regulation Group, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
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Huang DT, Yealy DM, Filbin MR, Brown AM, Chang CCH, Doi Y, Donnino MW, Fine J, Fine MJ, Fischer MA, Holst JM, Hou PC, Kellum JA, Khan F, Kurz MC, Lotfipour S, LoVecchio F, Peck-Palmer OM, Pike F, Prunty H, Sherwin RL, Southerland L, Terndrup T, Weissfeld LA, Yabes J, Angus DC. Procalcitonin-Guided Use of Antibiotics for Lower Respiratory Tract Infection. N Engl J Med 2018; 379:236-249. [PMID: 29781385 PMCID: PMC6197800 DOI: 10.1056/nejmoa1802670] [Citation(s) in RCA: 263] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The effect of procalcitonin-guided use of antibiotics on treatment for suspected lower respiratory tract infection is unclear. METHODS In 14 U.S. hospitals with high adherence to quality measures for the treatment of pneumonia, we provided guidance for clinicians about national clinical practice recommendations for the treatment of lower respiratory tract infections and the interpretation of procalcitonin assays. We then randomly assigned patients who presented to the emergency department with a suspected lower respiratory tract infection and for whom the treating physician was uncertain whether antibiotic therapy was indicated to one of two groups: the procalcitonin group, in which the treating clinicians were provided with real-time initial (and serial, if the patient was hospitalized) procalcitonin assay results and an antibiotic use guideline with graded recommendations based on four tiers of procalcitonin levels, or the usual-care group. We hypothesized that within 30 days after enrollment the total antibiotic-days would be lower - and the percentage of patients with adverse outcomes would not be more than 4.5 percentage points higher - in the procalcitonin group than in the usual-care group. RESULTS A total of 1656 patients were included in the final analysis cohort (826 randomly assigned to the procalcitonin group and 830 to the usual-care group), of whom 782 (47.2%) were hospitalized and 984 (59.4%) received antibiotics within 30 days. The treating clinician received procalcitonin assay results for 792 of 826 patients (95.9%) in the procalcitonin group (median time from sample collection to assay result, 77 minutes) and for 18 of 830 patients (2.2%) in the usual-care group. In both groups, the procalcitonin-level tier was associated with the decision to prescribe antibiotics in the emergency department. There was no significant difference between the procalcitonin group and the usual-care group in antibiotic-days (mean, 4.2 and 4.3 days, respectively; difference, -0.05 day; 95% confidence interval [CI], -0.6 to 0.5; P=0.87) or the proportion of patients with adverse outcomes (11.7% [96 patients] and 13.1% [109 patients]; difference, -1.5 percentage points; 95% CI, -4.6 to 1.7; P<0.001 for noninferiority) within 30 days. CONCLUSIONS The provision of procalcitonin assay results, along with instructions on their interpretation, to emergency department and hospital-based clinicians did not result in less use of antibiotics than did usual care among patients with suspected lower respiratory tract infection. (Funded by the National Institute of General Medical Sciences; ProACT ClinicalTrials.gov number, NCT02130986 .).
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Affiliation(s)
- David T Huang
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Donald M Yealy
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Michael R Filbin
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Aaron M Brown
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Chung-Chou H Chang
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Yohei Doi
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Michael W Donnino
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Jonathan Fine
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Michael J Fine
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Michelle A Fischer
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - John M Holst
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Peter C Hou
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - John A Kellum
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Feras Khan
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Michael C Kurz
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Shahram Lotfipour
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Frank LoVecchio
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Octavia M Peck-Palmer
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Francis Pike
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Heather Prunty
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Robert L Sherwin
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Lauren Southerland
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Thomas Terndrup
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Lisa A Weissfeld
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Jonathan Yabes
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
| | - Derek C Angus
- From the CRISMA (Clinical Research, Investigation, and Systems Modeling of Acute Illness) Center (D.T.H., C.-C.H.C., J.A.K., O.M.P.-P., D.C.A.), the Departments of Critical Care Medicine (D.T.H., J.A.K., O.M.P.-P., D.C.A.), Emergency Medicine (D.T.H., D.M.Y., A.M.B., H.P.), and Pathology (O.M.P.-P.), the MACRO (Multidisciplinary Acute Care Research Organization) Center (D.T.H., D.M.Y., D.C.A.), and the Divisions of General Internal Medicine (C.-C.H.C., M.J.F., J.Y.) and Infectious Diseases (Y.D.), University of Pittsburgh, and the Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System (M.J.F.) - all in Pittsburgh; the Department of Emergency Medicine, Massachusetts General Hospital (M.R.F.), the Department of Emergency Medicine, Beth Israel Deaconess Medical Center (M.W.D.), and the Department of Emergency Medicine, Brigham and Women's Hospital (P.C.H.) - all in Boston; the Department of Emergency Medicine, Norwalk Hospital, Norwalk, CT (J.F.); the Department of Emergency Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA (M.A.F., T.T.); the Department of Emergency Medicine, Essentia Health, Duluth, MN (J.M.H.); the Department of Emergency Medicine, University of Maryland Medical Center, Baltimore (F.K.); the Department of Emergency Medicine, University of Alabama at Birmingham Hospital, Birmingham (M.C.K.); the Department of Emergency Medicine, University of California at Irvine Medical Center, Irvine (S.L.); the Department of Emergency Medicine, Maricopa Medical Center, Phoenix, AZ (F.L.); Eli Lilly, Indianapolis (F.P.); the Department of Emergency Medicine, Detroit Receiving Hospital, Detroit (R.L.S.); the Department of Emergency Medicine, Ohio State University, Columbus (L.S., T.T.); and Statistics Collaborative, Washington, DC (L.A.W.)
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Cohoon KP, De Sanctis Y, Haskell L, McBane RD, Spiro TE. Rivaroxaban for thromboprophylaxis among patients recently hospitalized for acute infectious diseases: a subgroup analysis of the MAGELLAN study. J Thromb Haemost 2018; 16:1278-1287. [PMID: 29753308 DOI: 10.1111/jth.14146] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Indexed: 08/31/2023]
Abstract
Essentials Net benefit of venous thromboprophylaxis (VTE) in patients hospitalized for infections is unknown. MAGELLAN trial subgroup analysis was performed for patients hospitalized for acute infectious diseases. At day 35, prolonged rivaroxaban prophylaxis reduced VTE compared to enoxaparin (4.2% vs. 6.6%). Rivaroxaban prophylaxis reduced VTE in patients hospitalized for active lung infections. SUMMARY Background Despite the well-established association between infection and venous thromboembolism (VTE), there are few data specifically assessing the efficacy and safety of the VTE prophylaxis strategies for patients hospitalized for acute infectious diseases. Objectives To estimate the incidence of VTE and bleeding outcomes, comparing prolonged prophylaxis with rivaroxaban 10 mg daily for 35 days with enoxaparin 40 mg daily for 10 days. Patients/Methods A subgroup analysis of patients hospitalized for acute infectious diseases in the MAGELLAN trial was performed. The primary efficacy outcome was the composite of asymptomatic proximal or symptomatic VTE at days 10 and 35. The principal safety outcome was the composite of major or clinically relevant non-major bleeding. Results Three thousand one hundred and seventy-three patients with acute infectious diseases leading to hospitalization were randomized to either rivaroxaban (n = 1585) or enoxaparin/placebo (n = 1588), and received at least one dose of study medication. At day 10, primary composite efficacy outcomes did not differ between prophylaxis strategies (rivaroxaban, 2.7%; and enoxaparin, 3.7%). At day 35, there were fewer VTE events with rivaroxaban (4.2%) than with enoxaparin (6.6%) (relative risk [RR] 0.64; 95% confidence interval [CI] 0.45-0.92). Patients with pulmonary infections randomized to rivaroxaban had a lower incidence of VTE both at 10 days (RR 0.50, 95% CI 0.28-0.90) and at 35 days (RR 0.54, 95% CI 0.33-0.87). Primary safety outcome events were increased with rivaroxaban (RR 2.42, 95% CI 1.60-3.66). Conclusions Prolonged rivaroxaban prophylaxis reduced the incidence of VTE in patients hospitalized for acute infectious diseases, particularly those involving the lungs. Efficacy benefits were, in part, offset by bleeding outcomes. ClinicalTrials.gov Number: NCT 00571649.
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Affiliation(s)
- K P Cohoon
- Department of Cardiovascular Diseases and Gonda Vascular Center, Mayo Clinic, Rochester, MN, USA
| | | | - L Haskell
- Janssen Research & Development LLC, Raritan, NJ, USA
| | - R D McBane
- Department of Cardiovascular Diseases and Gonda Vascular Center, Mayo Clinic, Rochester, MN, USA
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Montagnani F, Rossetti B, Vannoni A, Cusi MG, De Luca A. Laboratory diagnosis of Mycoplasma pneumoniae infections: data analysis from clinical practice. New Microbiol 2018; 41:203-207. [PMID: 29874388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
An etiological diagnosis of respiratory infections caused by Mycoplasma pneumoniae is particularly challenging due to the lack of a definite standard test. This study aimed to analyse the correlation and combination of diagnostic results obtained from direct and indirect assays (Mycoplasma pneumoniae DNA by PCR and serology) in use at a first level diagnostic laboratory. Samples from patients with respiratory infections tested for M. pneumoniae during routine clinical practice were retrospectively analysed. In pediatric patients <15 years old, we documented a significantly higher proportion of IgM positive results (23.6% versus 3.9% in ≥15-year-old patients, p<0.0001) but a lower IgM specificity (false positive IgM 34.8% versus 12.2% in ≥15 years old patients, p 0.01), as verified by seroconversion. A small percentage (4%) of respiratory samples were positive for M. pneumoniae DNA regardless of age and type of sample. Assuming IgM positivity as the reference standard, PCR showed a total lack of sensitivity in patients <15 years old and 20% sensitivity in children <15 years old; specificity was 95% in both age groups. Agreement between PCR and IgM serology was slight (Cohen's kappa 0.09). According to our data, no single diagnostic test could be considered optimal for M. pneumoniae detection and improved assays are required.
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Affiliation(s)
- Francesca Montagnani
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
- Infectious Diseases Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Barbara Rossetti
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
- Infectious Diseases Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Alessandro Vannoni
- Microbiology Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Maria Grazia Cusi
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
- Microbiology Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | - Andrea De Luca
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
- Infectious Diseases Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
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Fuchs A, Gotta V, Decker ML, Szinnai G, Baumann P, Bonhoeffer J, Ritz N. Cytokine kinetic profiles in children with acute lower respiratory tract infection: a post hoc descriptive analysis from a randomized control trial. Clin Microbiol Infect 2018; 24:1341.e1-1341.e7. [PMID: 29555393 DOI: 10.1016/j.cmi.2018.03.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/08/2018] [Accepted: 03/10/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Standard inflammatory markers and chest radiography lack the ability to discriminate bacterial from non-bacterial lower respiratory tract infection (LRTI). Cytokine profiles may serve as biomarkers for LRTI, but their applicability to identify aetiology, severity of disease and need for antibiotic prescription in children remains poorly defined. Objectives were to determine the cytokine kinetic profiles over 5 days in paediatric patients with LRTI, to investigate the relationship between cytokine patterns, and clinical and laboratory variables. METHODS We included patients aged 1 month to 18 years, with febrile LRTI and three consecutive cytokines measurements on days 1, 3 and 5 of a randomized controlled trial (ProPAED study). We evaluated differences in cytokine concentrations between days and associations with clinical and laboratory variables. RESULTS A total of 181 patients (median age 4.1 years) were included; 72/181 (40%) received antibiotics. Serum concentrations of interferon (IFN)-γ, interleukin (IL)-1ra, IL-6, IL-10, IFN-γ-inducible protein (IP)-10 and tumor necrosis factor-α were elevated on day 1 and decreased subsequently, with the greatest decline between day 1 and 3 (by -8 to >-94%). Procalcitonin (PCT) and C-reactive protein (CRP) values showed a protracted decrease with the most prominent reduction in concentrations between days 3 and 5. Significantly elevated IL-6 concentrations were associated with hospital admission, antibiotic treatment, and prolonged antibiotic treatment. Bacteraemic LRTI patients had higher concentrations of IL-1ra (p <0.0055) and IL-6 (p <0.0055) on day 1. CONCLUSIONS We observed an earlier decrease of elevated cytokines compared to PCT or CRP. Both pro- and anti-inflammatory cytokines may serve as markers for severity of LRTI.
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Affiliation(s)
- A Fuchs
- Paediatric Pharmacology and Pharmacometrics, University of Basel Children's Hospital, Basel, Switzerland
| | - V Gotta
- Paediatric Pharmacology and Pharmacometrics, University of Basel Children's Hospital, Basel, Switzerland
| | - M-L Decker
- Paediatric Pharmacology and Pharmacometrics, University of Basel Children's Hospital, Basel, Switzerland
| | - G Szinnai
- Paediatric Endocrinology and Diabetology, University of Basel Children's Hospital, Basel, Switzerland
| | - P Baumann
- Paediatric Infectious Diseases and Vaccinology, University of Basel Children's Hospital, Basel, Switzerland
| | - J Bonhoeffer
- Paediatric Infectious Diseases and Vaccinology, University of Basel Children's Hospital, Basel, Switzerland
| | - N Ritz
- Paediatric Pharmacology and Pharmacometrics, University of Basel Children's Hospital, Basel, Switzerland; Paediatric Infectious Diseases and Vaccinology, University of Basel Children's Hospital, Basel, Switzerland; Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia.
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Abstract
CLINICAL QUESTION Is the use of procalcitonin for guiding antibiotic decisions in patients with acute upper and lower respiratory tract infections associated with improved clinical outcomes compared with usual care? BOTTOM LINE Among patients with varying types and severity of acute respiratory infection, using procalcitonin to guide decisions about antibiotics is associated with lower rates of antibiotic exposure, antibiotic-related adverse effects, and mortality.
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Affiliation(s)
- Philipp Schuetz
- Medical University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Yannick Wirz
- Medical University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
| | - Beat Mueller
- Medical University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
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Nybo M. [Not Available]. Ugeskr Laeger 2018; 180:V69711. [PMID: 29493498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Kanai Y, Kawagishi T, Okamoto M, Sakai Y, Matsuura Y, Kobayashi T. Lethal murine infection model for human respiratory disease-associated Pteropine orthoreovirus. Virology 2018; 514:57-65. [PMID: 29128757 PMCID: PMC7173163 DOI: 10.1016/j.virol.2017.10.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/24/2022]
Abstract
Pteropine orthoreovirus (PRV) is an emerging bat-borne human pathogen causing severe respiratory illness. To date, however, the evaluation of PRV virulence has largely depended on the limited numbers of clinical cases owing to the lack of animal models. To develop an in vivo model of PRV infection, an inbred C3H mouse strain was infected intranasally with pathogenic PRV strain Miyazaki-Bali/2007. C3H mice suffered severe lung infection with significant body weight reduction and died within 7 days after intranasal infection. Infectious viruses were isolated mainly from the lungs and trachea. Histopathological examination revealed interstitial pneumonia with monocytes infiltration. Following repeated intranasal infection, mice developed antibodies to particular structural and non-structural proteins of PRV. The results of these immunological assays will help to develop laboratory protocols for sero-epidemiological studies. Our small rodent model of lethal respiratory infection will further allow investigation of the molecular mechanisms underlying the high pathogenicity of PRV. A lethal PRV strain Miyazaki-Bali/2007 murine infection model was established. Susceptibility of different mouse strains to PRV infection was investigated. Antibody responses to PRV proteins in C3H mice post intranasal infection were studied.
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Affiliation(s)
- Yuta Kanai
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Takahiro Kawagishi
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Minoru Okamoto
- Department of Veterinary Pathology, Rakuno Gakuen University, Hokkaido, Japan
| | - Yusuke Sakai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yoshiharu Matsuura
- Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Takeshi Kobayashi
- Department of Virology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.
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Karaoglan M, Eksi F. The Coincidence of Newly Diagnosed Type 1 Diabetes Mellitus with IgM Antibody Positivity to Enteroviruses and Respiratory Tract Viruses. J Diabetes Res 2018; 2018:8475341. [PMID: 30186878 PMCID: PMC6116462 DOI: 10.1155/2018/8475341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 07/01/2018] [Accepted: 07/24/2018] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE Viruses trigger and promote islet cell destruction and cause type 1 diabetes mellitus (T1DM). However, the existence of a cause-and-effect relationship is under debate. The aim of this study is to investigate the sero-epidemiological and molecular evidence on enteroviruses and respiratory viruses in patients with newly diagnosed T1DM during the cold season. DESIGN Forty children newly diagnosed with T1DM and 30 healthy children who presented to the clinic over the course of a year were included in the study. The IgM antibodies against enteroviruses and respiratory viruses were studied using the indirect immunofluorescence assay (IFA) test, and no CBV4-specific RNA was detected in the children. The onset times of T1DM were classified into fall-winter and spring-summer seasons and separated into cold, moderate, or warm months in terms of temperature. RESULTS The percentages of viral IgM antibodies against most common viruses were detected in the patients as follows: influenza B (IVB) (70%), echovirus 7 (ECHO7) (45%), parainfluenza virus 4 (PIV4) (40%), coxsackievirus A7 (CAV7) (27.5%), and H3N2 (22.5%). Compared with the control group, the above viruses had a significant association with T1DM (p ≤ 0.001, p ≤ 0.001, p = 0.035, p = 0.003, and p = 0.023, resp.). CBV4-specific RNA was not detected in any serum. A total of 75% and 95% patients were diagnosed with T1DM in the fall-winter seasons and cold-moderate months, respectively. CONCLUSION Our study demonstrates the significant association between T1DM and the presence of IgM antibodies against IVB, ECHO7, PIV4, CAV7, and H3N2, and the majority of newly diagnosed T1DM appeared in the fall-winter season. It suggests that enteroviruses and respiratory viruses, in addition to seasonal variation, could play a role in the etiopathogenesis and clinical onset of T1DM.
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Affiliation(s)
- Murat Karaoglan
- Division of Pediatric Endocrinology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
| | - Fahriye Eksi
- Department of Medical Microbiology, Gaziantep University Faculty of Medicine, Gaziantep, Turkey
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Perez MO, Oliveira RM, Levy-Neto M, Caparbo VF, Pereira RM. Serum 25-hydroxyvitamin D levels in patients with Granulomatosis with Polyangiitis: association with respiratory infection. Clinics (Sao Paulo) 2017; 72:723-728. [PMID: 29319717 PMCID: PMC5738555 DOI: 10.6061/clinics/2017(12)02] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 08/29/2017] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES To determine the possible association of serum 25-hydroxyvitamin D (25OHD) levels with disease activity and respiratory infection in granulomatosis with polyangiitis patients during two different periods: winter/spring and summer/autumn. METHODS Thirty-two granulomatosis with polyangiitis patients were evaluated in the winter/spring, and the same patients (except 5) were evaluated in summer/autumn (n=27). The 25OHD levels were measured by radioimmunoassay. Disease activity was assessed by the Birmingham Vasculitis Activity Score Modified for Wegener's Granulomatosis (BVAS/WG) and antineutrophil cytoplasmic antibody (ANCA) positivity. Respiratory infection was defined according the Centers for Disease Control and Prevention criteria. RESULTS 25OHD levels were lower among patients in winter/spring than in summer/autumn (32.31±13.10 vs. 38.98±10.97 ng/mL, p=0.04). Seven patients met the criteria for respiratory infection: 5 in winter/spring and 2 in summer/autumn. Patients with respiratory infection presented lower 25OHD levels than those without infection (25.15±11.70 vs. 36.73±12.08 ng/mL, p=0.02). A higher frequency of low vitamin D levels (25OHD<20 ng/mL) was observed in patients with respiratory infection (37.5% vs. 7.8, p=0.04). Serum 25OHD levels were comparable between patients with (BVAS/WG≥1 plus positive ANCA) and without disease activity (BVAS/WG=0 plus negative ANCA) (35.40±11.48 vs. 35.34±13.13 ng/mL, p=0.98). CONCLUSIONS Lower 25OHD levels were associated with respiratory infection but not disease activity in granulomatosis with polyangiitis patients. Our data suggest that hypovitaminosis D could be an important risk factor for respiratory infection in granulomatosis with polyangiitis patients.
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Affiliation(s)
- Mariana O. Perez
- Divisao de Reumatologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | | | - Mauricio Levy-Neto
- Divisao de Reumatologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Valeria F. Caparbo
- Divisao de Reumatologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Rosa M.R. Pereira
- Divisao de Reumatologia, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, BR
- *Corresponding author. E-mail:
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Schuetz P, Wirz Y, Sager R, Christ‐Crain M, Stolz D, Tamm M, Bouadma L, Luyt CE, Wolff M, Chastre J, Tubach F, Kristoffersen KB, Burkhardt O, Welte T, Schroeder S, Nobre V, Wei L, Bucher HCC, Bhatnagar N, Annane D, Reinhart K, Branche A, Damas P, Nijsten M, de Lange DW, Deliberato RO, Lima SSS, Maravić‐Stojković V, Verduri A, Cao B, Shehabi Y, Beishuizen A, Jensen JS, Corti C, Van Oers JA, Falsey AR, de Jong E, Oliveira CF, Beghe B, Briel M, Mueller B. Procalcitonin to initiate or discontinue antibiotics in acute respiratory tract infections. Cochrane Database Syst Rev 2017; 10:CD007498. [PMID: 29025194 PMCID: PMC6485408 DOI: 10.1002/14651858.cd007498.pub3] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Acute respiratory infections (ARIs) comprise of a large and heterogeneous group of infections including bacterial, viral, and other aetiologies. In recent years, procalcitonin (PCT), a blood marker for bacterial infections, has emerged as a promising tool to improve decisions about antibiotic therapy (PCT-guided antibiotic therapy). Several randomised controlled trials (RCTs) have demonstrated the feasibility of using procalcitonin for starting and stopping antibiotics in different patient populations with ARIs and different settings ranging from primary care settings to emergency departments, hospital wards, and intensive care units. However, the effect of using procalcitonin on clinical outcomes is unclear. This is an update of a Cochrane review and individual participant data meta-analysis first published in 2012 designed to look at the safety of PCT-guided antibiotic stewardship. OBJECTIVES The aim of this systematic review based on individual participant data was to assess the safety and efficacy of using procalcitonin for starting or stopping antibiotics over a large range of patients with varying severity of ARIs and from different clinical settings. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL), which contains the Cochrane Acute Respiratory Infections Group's Specialised Register, MEDLINE, and Embase, in February 2017, to identify suitable trials. We also searched ClinicalTrials.gov to identify ongoing trials in April 2017. SELECTION CRITERIA We included RCTs of adult participants with ARIs who received an antibiotic treatment either based on a procalcitonin algorithm (PCT-guided antibiotic stewardship algorithm) or usual care. We excluded trials if they focused exclusively on children or used procalcitonin for a purpose other than to guide initiation and duration of antibiotic treatment. DATA COLLECTION AND ANALYSIS Two teams of review authors independently evaluated the methodology and extracted data from primary studies. The primary endpoints were all-cause mortality and treatment failure at 30 days, for which definitions were harmonised among trials. Secondary endpoints were antibiotic use, antibiotic-related side effects, and length of hospital stay. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) using multivariable hierarchical logistic regression adjusted for age, gender, and clinical diagnosis using a fixed-effect model. The different trials were added as random-effects into the model. We conducted sensitivity analyses stratified by clinical setting and type of ARI. We also performed an aggregate data meta-analysis. MAIN RESULTS From 32 eligible RCTs including 18 new trials for this 2017 update, we obtained individual participant data from 26 trials including 6708 participants, which we included in the main individual participant data meta-analysis. We did not obtain individual participant data for four trials, and two trials did not include people with confirmed ARIs. According to GRADE, the quality of the evidence was high for the outcomes mortality and antibiotic exposure, and quality was moderate for the outcomes treatment failure and antibiotic-related side effects.Primary endpoints: there were 286 deaths in 3336 procalcitonin-guided participants (8.6%) compared to 336 in 3372 controls (10.0%), resulting in a significantly lower mortality associated with procalcitonin-guided therapy (adjusted OR 0.83, 95% CI 0.70 to 0.99, P = 0.037). We could not estimate mortality in primary care trials because only one death was reported in a control group participant. Treatment failure was not significantly lower in procalcitonin-guided participants (23.0% versus 24.9% in the control group, adjusted OR 0.90, 95% CI 0.80 to 1.01, P = 0.068). Results were similar among subgroups by clinical setting and type of respiratory infection, with no evidence for effect modification (P for interaction > 0.05). Secondary endpoints: procalcitonin guidance was associated with a 2.4-day reduction in antibiotic exposure (5.7 versus 8.1 days, 95% CI -2.71 to -2.15, P < 0.001) and lower risk of antibiotic-related side effects (16.3% versus 22.1%, adjusted OR 0.68, 95% CI 0.57 to 0.82, P < 0.001). Length of hospital stay and intensive care unit stay were similar in both groups. A sensitivity aggregate-data analysis based on all 32 eligible trials showed similar results. AUTHORS' CONCLUSIONS This updated meta-analysis of individual participant data from 12 countries shows that the use of procalcitonin to guide initiation and duration of antibiotic treatment results in lower risks of mortality, lower antibiotic consumption, and lower risk for antibiotic-related side effects. Results were similar for different clinical settings and types of ARIs, thus supporting the use of procalcitonin in the context of antibiotic stewardship in people with ARIs. Future high-quality research is needed to confirm the results in immunosuppressed patients and patients with non-respiratory infections.
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Affiliation(s)
- Philipp Schuetz
- Kantonsspital AarauMedical University DepartmentAarauSwitzerland
- Kantonsspital AarauDepartment of Endocrinology/Metabolism/Clinical Nutrition, Department of Internal MedicineAarauSwitzerland
- University of BaselMedical FacultyBaselSwitzerland
| | - Yannick Wirz
- Kantonsspital AarauMedical University DepartmentAarauSwitzerland
| | - Ramon Sager
- Kantonsspital AarauMedical University DepartmentAarauSwitzerland
| | - Mirjam Christ‐Crain
- University Hospital Basel, University of BaselClinic for Endocrinology, Diabetes and Metabolism, Department of Clinical ResearchPetersgraben 4BaselSwitzerlandCH‐4031
| | - Daiana Stolz
- University Hospital BaselClinic of Pneumology and Pulmonary Cell ResearchPetersgraben 4BaselSwitzerlandCH‐4031
| | - Michael Tamm
- University Hospital BaselClinic of Pneumology and Pulmonary Cell ResearchPetersgraben 4BaselSwitzerlandCH‐4031
| | - Lila Bouadma
- Hôpital Bichat‐Claude Bernard, Université Paris 7‐Denis‐DiderotService de Réanimation MédicaleParisFrance
| | - Charles E Luyt
- Groupe Hospitalier Pitié‐Salpêtrière, Assistance Publique–Hôpitaux de Paris, Université Paris 6‐Pierre‐et‐Marie‐CurieService de Réanimation MédicaleParisFrance
| | - Michel Wolff
- Université Paris 7‐Denis‐DiderotService de Réanimation MédicaleHôpital Bichat‐Claude‐BernardAssistance Publique‐Hôpitaux de Paris (AP‐HP)ParisFrance
| | - Jean Chastre
- Université Paris 6‐Pierre‐et‐Marie‐CurieService de Réanimation MédicaleHôpital Pitié?Salpêtrière (AP‐HP)ParisFrance
| | - Florence Tubach
- Santé Publique et Information Médicale, AP‐HP, Groupe Hospitalier Pitié‐Salpêtrière Charles‐Foix, INSERM CIC‐P 1421, Sorbonne Universités, UPMC Univ Paris 06Département BiostatistiqueParisFrance
| | - Kristina B Kristoffersen
- Aarhus University HospitalDepartment of Infectious DiseasesSkejbyBrendstrupgaardvej 100Aarhus NDenmark8200
| | - Olaf Burkhardt
- Medizinische Hochschule HannoverDepartment of Pulmonary MedicineCarl‐Neuberg‐Str. 1HannoverNiedersachsenGermany30625
| | - Tobias Welte
- Medizinische Hochschule HannoverDepartment of Pulmonary MedicineCarl‐Neuberg‐Str. 1HannoverNiedersachsenGermany30625
- German Center for Lung Reearch (DZL)Aulweg 130GießenGermany35392
| | - Stefan Schroeder
- Krankenhaus DuerenDepartment of Anesthesiology and Intensive Care MedicineDuerenGermany
| | - Vandack Nobre
- Universidade Federal de Minas GeraisDepartment of Internal Medicine, School of MedicineMinas GeraisBelo HorizonteBrazil
| | - Long Wei
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital (East campus)Department of Internal and Geriatric MedicineShanghaiChina
| | - Heiner C C Bucher
- University Hospital Basel and University of BaselBasel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical ResearchPetersgraben 4BaselSwitzerlandCH‐4031
- University Hospital BaselMedical FacultyBaselSwitzerland
| | - Neera Bhatnagar
- McMaster UniversityDepartment of Clinical Epidemiology and Biostatistics1200 Main Street WestHamiltonONCanadaL8N 3Z5
| | - Djillali Annane
- Center for Neuromuscular Diseases; Raymond Poincaré Hospital (AP‐HP)Department of Critical Care, Hyperbaric Medicine and Home Respiratory UnitFaculty of Health Sciences Simone Veil, University of Versailles SQY‐ University of Paris Saclay104 Boulevard Raymond PoincaréGarchesFrance92380
| | - Konrad Reinhart
- Jena University HospitalDepartment of Anesthesiology and Intensive Care MedicineErlanger Allee 101JenaGermany07747
| | - Angela Branche
- University of Rochester School of MedicineDepartment of Medicine, Division of Infectious DiseasesRochesterNYUSA
| | - Pierre Damas
- University Hospital of Liege, Domaine universitaire de LiègeDepartment of General Intensive CareLiegeBelgium
| | - Maarten Nijsten
- University of GroningenUniversity Medical CentreGroningenNetherlands
| | - Dylan W de Lange
- University Medical Center UtrechtDepartment of Intensive CareHeidelberglaan 100UtrechtNetherlands3584 CX
| | | | - Stella SS Lima
- Universidade Federal de Minas GeraisGraduate Program in Infectious Diseases and Tropical Medicine, Department of Internal Medicine, School of MedicineBelo HorizonteBrazil
| | | | - Alessia Verduri
- University of Modena and Reggio EmiliaDepartment of Medical and Surgical Sciences, Policlinico di ModenaModenaItaly
| | - Bin Cao
- China‐Japan Friendship Hospital, National Clinical Research Center of Respiratory Diseases, Capital Medical UniversityCenter for Respiratory Diseases, Department of Pulmonary and Critical Care MedicineBeijingChina
| | - Yahya Shehabi
- Monash HealthCritical Care and Peri‐operative MedicineMelbourneVictoriaAustralia
- Monash UniversitySchool of Clinical Sciences, Faculty of Medicine Nursing and Health SciencesMelbourneVictoriaAustralia
| | | | - Jens‐Ulrik S Jensen
- Copenhagen University Hospital, Bispebjerg og FrederiksbergDepartment of Respiratory MedicineBispebjerg BakkeCopenhagen NVCapitol RegionDenmarkDK 2400
- Rigshospitalet, University of CopenhagenCHIP, Department of Infectious Diseases and Rheumatology, FinsencentretBlegdamsvej 9, DK‐2100CopenhagenDenmarkDK‐2100
| | - Caspar Corti
- Copenhagen University Hospital, Bispebjerg og FrederiksbergDepartment of Respiratory MedicineBispebjerg BakkeCopenhagen NVCapitol RegionDenmarkDK 2400
| | - Jos A Van Oers
- Elisabeth Tweesteden ZiekenhuisIntensive Care UnitTilburgNetherlands5022 GC
| | - Ann R Falsey
- University of Rochester School of MedicineDepartment of Medicine, Division of Infectious DiseasesRochesterNYUSA
| | - Evelien de Jong
- VU University Medical CenterDepartment of Intensive CareAmsterdamNetherlands1081HV
| | - Carolina F Oliveira
- Federal University of Minas GeraisDepartment of Internal Medicine, School of MedcineBelo HorizonteBrazil31130‐100
| | - Bianca Beghe
- AOU Policlinico di ModenaDepartment of Medical and Surgical SciencesModernaItaly41124
| | - Matthias Briel
- University of BaselMedical FacultyBaselSwitzerland
- University Hospital Basel and University of BaselBasel Institute for Clinical Epidemiology and Biostatistics, Department of Clinical ResearchPetersgraben 4BaselSwitzerlandCH‐4031
| | - Beat Mueller
- Kantonsspital AarauMedical University DepartmentAarauSwitzerland
- Kantonsspital AarauDepartment of Endocrinology/Metabolism/Clinical Nutrition, Department of Internal MedicineAarauSwitzerland
- University of BaselMedical FacultyBaselSwitzerland
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Grant WB, Bhattoa HP, Boucher BJ. Seasonal variations of U.S. mortality rates: Roles of solar ultraviolet-B doses, vitamin D, gene exp ression, and infections. J Steroid Biochem Mol Biol 2017; 173:5-12. [PMID: 28088363 DOI: 10.1016/j.jsbmb.2017.01.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 12/13/2016] [Accepted: 01/06/2017] [Indexed: 12/31/2022]
Abstract
Death rates in the U.S. show a pronounced seasonality. The broad seasonal variation shows about 25% higher death rates in winter than in summer with an additional few percent increase associated with the Christmas and New Year's holidays. A pronounced increase in death rates also starts in mid-September, shortly after the school year begins. The causes of death with large contributions to the observed seasonality include diseases of the circulatory system; the respiratory system; the digestive system; and endocrine, nutritional, and metabolic diseases. Researchers have identified several factors showing seasonal variation that could possibly explain the seasonal variations in mortality rate. These factors include seasonal variations in solar ultraviolet-B(UVB) doses and serum 25-hydroxyvitamin D [25(OH)D] concentrations, gene expression, ambient temperature and humidity, UVB effects on environmental pathogen load, environmental pollutants and allergens, and photoperiod (or length of day). The factors with the strongest support in this analysis are seasonal variations in solar UVB doses and 25(OH)D concentrations. In the U.S., population mean 25(OH)D concentrations range from 21ng/mL in March to 28ng/mL in August. Measures to ensure that all people had 25(OH)D concentrations >36ng/mL year round would probably reduce death rates significantly.
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Affiliation(s)
- William B Grant
- Sunlight, Nutrition, and Health Research Center, PO Box 641603, San Francisco, CA, 94164-1603, USA.
| | - Harjit Pal Bhattoa
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei blvd 98, Debrecen, H-4032, Hungary
| | - Barbara J Boucher
- The Blizard Institute, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, London, UK
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Tonkin‐Crine SKG, Tan PS, van Hecke O, Wang K, Roberts NW, McCullough A, Hansen MP, Butler CC, Del Mar CB. Clinician-targeted interventions to influence antibiotic prescribing behaviour for acute respiratory infections in primary care: an overview of systematic reviews. Cochrane Database Syst Rev 2017; 9:CD012252. [PMID: 28881002 PMCID: PMC6483738 DOI: 10.1002/14651858.cd012252.pub2] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Antibiotic resistance is a worldwide health threat. Interventions that reduce antibiotic prescribing by clinicians are expected to reduce antibiotic resistance. Disparate interventions to change antibiotic prescribing behaviour for acute respiratory infections (ARIs) have been trialled and meta-analysed, but not yet synthesised in an overview. This overview synthesises evidence from systematic reviews, rather than individual trials. OBJECTIVES To systematically review the existing evidence from systematic reviews on the effects of interventions aimed at influencing clinician antibiotic prescribing behaviour for ARIs in primary care. METHODS We searched the Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects (DARE), MEDLINE, Embase, CINAHL, PsycINFO, and Science Citation Index to June 2016. We also searched the reference lists of all included reviews. We ran a pre-publication search in May 2017 and placed additional studies in 'awaiting classification'.We included both Cochrane and non-Cochrane reviews of randomised controlled trials evaluating the effect of any clinician-focussed intervention on antibiotic prescribing behaviour in primary care. Two overview authors independently extracted data and assessed the methodological quality of included reviews using the ROBIS tool, with disagreements reached by consensus or by discussion with a third overview author. We used the GRADE system to assess the quality of evidence in included reviews. The results are presented as a narrative overview. MAIN RESULTS We included eight reviews in this overview: five Cochrane Reviews (33 included trials) and three non-Cochrane reviews (11 included trials). Three reviews (all Cochrane Reviews) scored low risk across all the ROBIS domains in Phase 2 and low risk of bias overall. The remaining five reviews scored high risk on Domain 4 of Phase 2 because the 'Risk of bias' assessment had not been specifically considered and discussed in the review Results and Conclusions. The trials included in the reviews varied in both size and risk of bias. Interventions were compared to usual care.Moderate-quality evidence indicated that C-reactive protein (CRP) point-of-care testing (risk ratio (RR) 0.78, 95% confidence interval (CI) 0.66 to 0.92, 3284 participants, 6 trials), shared decision making (odds ratio (OR) 0.44, 95% CI 0.26 to 0.75, 3274 participants, 3 trials; RR 0.64, 95% CI 0.49 to 0.84, 4623 participants, 2 trials; risk difference -18.44, 95% CI -27.24 to -9.65, 481,807 participants, 4 trials), and procalcitonin-guided management (adjusted OR 0.10, 95% CI 0.07 to 0.14, 1008 participants, 2 trials) probably reduce antibiotic prescribing in general practice. We found moderate-quality evidence that procalcitonin-guided management probably reduces antibiotic prescribing in emergency departments (adjusted OR 0.34, 95% CI 0.28 to 0.43, 2605 participants, 7 trials). The overall effect of these interventions was small (few achieving greater than 50% reduction in antibiotic prescribing, most about a quarter or less), but likely to be clinically important.Compared to usual care, shared decision making probably makes little or no difference to reconsultation for the same illness (RR 0.87, 95% CI 0.74 to 1.03, 1860 participants, 4 trials, moderate-quality evidence), and may make little or no difference to patient satisfaction (RR 0.86, 95% CI 0.57 to 1.30, 1110 participants, 2 trials, low-quality evidence). Similarly, CRP testing probably has little or no effect on patient satisfaction (RR 0.79, 95% CI 0.57 to 1.08, 689 participants, 2 trials, moderate-quality evidence) or reconsultation (RR 1.08, 95% CI 0.93 to 1.27, 5132 participants, 4 trials, moderate-quality evidence). Procalcitonin-guided management probably results in little or no difference in treatment failure in general practice compared to normal care (adjusted OR 0.95, 95% CI 0.73 to 1.24, 1008 participants, 2 trials, moderate-quality evidence), however it probably reduces treatment failure in the emergency department compared to usual care (adjusted OR 0.76, 95% CI 0.61 to 0.95, 2605 participants, 7 trials, moderate-quality evidence).The quality of evidence for interventions focused on clinician educational materials and decision support in reducing antibiotic prescribing in general practice was either low or very low (no pooled result reported) and trial results were highly heterogeneous, therefore we were unable draw conclusions about the effects of these interventions. The use of rapid viral diagnostics in emergency departments may have little or no effect on antibiotic prescribing (RR 0.86, 95% CI 0.61 to 1.22, 891 participants, 3 trials, low-quality evidence) and may result in little to no difference in reconsultation (RR 0.86, 95% CI 0.59 to 1.25, 200 participants, 1 trial, low-quality evidence).None of the trials in the included reviews reported on management costs for the treatment of an ARI or any associated complications. AUTHORS' CONCLUSIONS We found evidence that CRP testing, shared decision making, and procalcitonin-guided management reduce antibiotic prescribing for patients with ARIs in primary care. These interventions may therefore reduce overall antibiotic consumption and consequently antibiotic resistance. There do not appear to be negative effects of these interventions on the outcomes of patient satisfaction and reconsultation, although there was limited measurement of these outcomes in the trials. This should be rectified in future trials.We could gather no information about the costs of management, and this along with the paucity of measurements meant that it was difficult to weigh the benefits and costs of implementing these interventions in practice.Most of this research was undertaken in high-income countries, and it may not generalise to other settings. The quality of evidence for the interventions of educational materials and tools for patients and clinicians was either low or very low, which prevented us from drawing any conclusions. High-quality trials are needed to further investigate these interventions.
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Affiliation(s)
- Sarah KG Tonkin‐Crine
- University of OxfordNuffield Department of Primary Care Health SciencesWoodstock RoadOxfordOxonUKOX2 6GG
| | - Pui San Tan
- University of OxfordNuffield Department of Primary Care Health SciencesWoodstock RoadOxfordOxonUKOX2 6GG
| | - Oliver van Hecke
- University of OxfordNuffield Department of Primary Care Health SciencesWoodstock RoadOxfordOxonUKOX2 6GG
| | - Kay Wang
- University of OxfordNuffield Department of Primary Care Health SciencesWoodstock RoadOxfordOxonUKOX2 6GG
| | - Nia W Roberts
- University of OxfordBodleian Health Care LibrariesKnowledge Centre, ORC Research Building, Old Road CampusOxfordOxfordshireUKOX3 7DQ
| | - Amanda McCullough
- Bond UniversityCentre for Research in Evidence‐Based Practice (CREBP)Gold CoastQueenslandAustralia
| | | | - Christopher C Butler
- University of OxfordNuffield Department of Primary Care Health SciencesWoodstock RoadOxfordOxonUKOX2 6GG
| | - Chris B Del Mar
- Bond UniversityCentre for Research in Evidence‐Based Practice (CREBP)Gold CoastQueenslandAustralia
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Ahout IML, Brand KH, Zomer A, van den Hurk WH, Schilders G, Brouwer ML, Neeleman C, de Groot R, Ferwerda G. Prospective observational study in two Dutch hospitals to assess the performance of inflammatory plasma markers to determine disease severity of viral respiratory tract infections in children. BMJ Open 2017; 7:e014596. [PMID: 28667205 PMCID: PMC5734420 DOI: 10.1136/bmjopen-2016-014596] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Respiratory viruses causing lower respiratory tract infections (LRTIs) are a major cause of hospital admissions in children. Since the course of these infections is unpredictable with potential fast deterioration into respiratory failure, infants are easily admitted to the hospital for observation. The aim of this study was to examine whether systemic inflammatory markers can be used to predict severity of disease in children with respiratory viral infections. METHODS Blood and nasopharyngeal washings from children <3 years of age with viral LRTI attending a hospital were collected within 24 hours (acute) and after 4-6 weeks (recovery). Patients were assigned to a mild (observation only), moderate (supplemental oxygen and/or nasogastric feeding) or severe (mechanical ventilation) group. Linear regression analysis was used to design a prediction rule using plasma levels of C reactive protein (CRP), serum amyloid A (SAA), pentraxin 3 (PTX3), serum amyloid P component and properdin. This rule was tested in a validation cohort. RESULTS One hundred and four children (52% male) were included. A combination of CRP, SAA, PTX3 and properdin was a better indicator of severe disease compared with any of the individual makers and age (69% sensitivity (95% CI 50 to 83), 90% specificity (95% CI 80 to 96)). Validation in 141 patients resulted in 71% sensitivity (95% CI 53 to 85), 87% specificity (95% CI 79 to 92), negative predictive value of 64% (95% CI 47 to 78) and positive predictive value of 90% (95% CI 82 to 95). The prediction rule was not able to identify patients with a mild course of disease. CONCLUSION A combination of CRP, SAA, PTX3 and properdin was able to identify children with a severe course of viral LRTI disease, even in children under 2 months of age. To assess the true impact on clinical management, these results should be validated in a prospective randomised control study.
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Affiliation(s)
- Inge M L Ahout
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, The Netherlands
| | - Kim H Brand
- Department of Pediatrics, Erasmus MC Sophia, Rotterdam, The Netherlands
| | - Aldert Zomer
- Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands
| | | | - Geurt Schilders
- Department Research and Development, Hycult Biotech, Uden, The Netherlands
| | - Marianne L Brouwer
- Department of Pediatrics, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - Chris Neeleman
- Department of Intensive Care Medicine, Radboud university medical center, Nijmegen, The Netherlands
| | - Ronald de Groot
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, The Netherlands
| | - Gerben Ferwerda
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Center for Infectious Diseases, Radboud university medical center, Nijmegen, The Netherlands
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van de Vosse E, van Ostaijen-Ten Dam MM, Vermaire R, Verhard EM, Waaijer JL, Bakker JA, Bernards ST, Eibel H, van Tol MJ, van Dissel JT, Haverkamp MH. Recurrent respiratory tract infections (RRTI) in the elderly: A late onset mild immunodeficiency? Clin Immunol 2017; 180:111-119. [PMID: 28487087 DOI: 10.1016/j.clim.2017.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 01/27/2017] [Accepted: 05/05/2017] [Indexed: 01/27/2023]
Abstract
Elderly with late-onset recurrent respiratory tract infections (RRTI) often have specific anti-polysaccharide antibody deficiency (SPAD). We hypothesized that late-onset RRTI is caused by mild immunodeficiencies, such as SPAD, that remain hidden through adult life. We analyzed seventeen elderly RRTI patients and matched controls. We determined lymphocyte subsets, expression of BAFF receptors, serum immunoglobulins, complement pathways, Pneumovax-23 vaccination response and genetic variations in BAFFR and MBL2. Twelve patients (71%) and ten controls (59%) had SPAD. IgA was lower in patients than in controls, but other parameters did not differ. However, a high percentage of both patients (53%) and controls (65%) were MBL deficient, much more than in the general population. Often, MBL2 secretor genotypes did not match functional deficiency, suggesting that functional MBL deficiency can be an acquired condition. In conclusion, we found SPAD and MBL deficiency in many elderly, and conjecture that at least the latter arises with age.
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Affiliation(s)
- Esther van de Vosse
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands.
| | | | - René Vermaire
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Els M Verhard
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Jacqueline L Waaijer
- Department of Paediatrics, Laboratory for Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jaap A Bakker
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Sandra T Bernards
- Department of Medical Microbiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Hermann Eibel
- Center for Chronic Immunodeficiency, University Medical Center Freiburg, Freiburg, Germany
| | - Maarten J van Tol
- Department of Paediatrics, Laboratory for Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jaap T van Dissel
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
| | - Margje H Haverkamp
- Department of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands
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Lai SH, Liao SL, Tsai MH, Hua MC, Chiu CY, Yeh KW, Yao TC, Huang JL. Low cord-serum 25-hydroxyvitamin D levels are associated with poor lung function performance and increased respiratory infection in infancy. PLoS One 2017; 12:e0173268. [PMID: 28267792 PMCID: PMC5340372 DOI: 10.1371/journal.pone.0173268] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 02/17/2017] [Indexed: 11/20/2022] Open
Abstract
Background Perinatal vitamin D deficiency is associated with a higher risk of wheezing in childhood. However, the relationship between vitamin D levels and lung function in infancy has not been investigated. The aim of this study was to investigate the impact of perinatal vitamin D levels on respiratory function and disease outcome in infancy. Materials and methods Full-term infants without any chronic diseases or major anomalies were enrolled in the Prediction of Allergies in Taiwanese Children cohort study. Maternal and cord blood were collected for determining the 25(OH)D level. Questionnaires were recorded at birth and 6 months of age. Infant lung function, including tidal breathing analysis, respiratory mechanics, and forced tidal expiration, was tested at 6 months of age. Results A total of 122 mother—infant pairs were enrolled in this study, and 71 infants underwent lung function testing at 6 months of age. 25(OH)D levels in maternal and cord serum were highly correlated (r2 = 0.457, p < 0.0001). Infants with lower cord serum 25(OH)D levels (< 13.7 ng/ml) had higher resistance of respiratory system (p < 0.01) and a higher risk of a respiratory tract infection before the age of 6 months (p < 0.01). Conclusion Although a high correlation was found between maternal and cord vitamin D levels, the effect on respiratory outcome was different. Our study is the first to show that low cord 25(OH)D levels significantly relationship with poorer lung function performance and higher likelihood of a respiratory tract infection before 6 months of age.
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Affiliation(s)
- Shen-Hao Lai
- Department of Pediatrics, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
| | - Sui-Ling Liao
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital, Keelung Branch, Keelung, Taiwan
| | - Ming-Han Tsai
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital, Keelung Branch, Keelung, Taiwan
| | - Man-Chin Hua
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital, Keelung Branch, Keelung, Taiwan
| | - Chih-Yung Chiu
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital, Keelung Branch, Keelung, Taiwan
| | - Kuo-Wei Yeh
- Department of Pediatrics, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
| | - Tsung-Chieh Yao
- Department of Pediatrics, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- * E-mail: (TCY); (JLH)
| | - Jing-Long Huang
- Department of Pediatrics, Chang Gung Memorial Hospital, Linkou Branch, Taoyuan, Taiwan
- Department of Pediatrics, Chang Gung University, Taoyuan, Taiwan
- Prediction of Allergies in Taiwanese Children (PATCH) Cohort Study Group, Keelung, Taiwan
- * E-mail: (TCY); (JLH)
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Elenius V, Palomares O, Waris M, Turunen R, Puhakka T, Rückert B, Vuorinen T, Allander T, Vahlberg T, Akdis M, Camargo CA, Akdis CA, Jartti T. The relationship of serum vitamins A, D, E and LL-37 levels with allergic status, tonsillar virus detection and immune response. PLoS One 2017; 12:e0172350. [PMID: 28235040 PMCID: PMC5325266 DOI: 10.1371/journal.pone.0172350] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/03/2017] [Indexed: 12/23/2022] Open
Abstract
Background Tonsils have an active role in immune defence and inducing and maintaining tolerance to allergens. Vitamins A, D, and E, and antimicrobial peptide LL-37 may have immunomodulatory effects. We studied how their serum levels were associated with allergy status, intratonsillar/nasopharyngeal virus detection and intratonsillar expression of T cell- and innate immune response-specific cytokines, transcription factors and type I/II/III interferons in patients undergoing tonsillectomy. Methods 110 elective tonsillectomy patients participated. Serum levels of vitamins A, 25(OH)D, and E, LL-37 and allergen-specific IgE as well as nasopharyngeal/intratonsillar respiratory viruses were analyzed. The mRNA expression of IFN-α, IFN-β, IFN-γ, IL-10, IL-13, IL-17, IL-28, IL-29, IL-37, TGF-β, FOXP3, GATA3, RORC2 and Tbet in tonsils were analyzed by quantitative RT-PCR. Results The median age of the patients was 16 years (range 3–60), 28% of subjects had atopy, and 57% carried ≥1 respiratory virus in nasopharynx. Detection of viruses decreased by age. Higher vitamin A levels showed borderline significance with less viral detection (P = 0.056). Higher 25(OH)D was associated with less allergic rhinitis and atopy (P < 0.05) and higher vitamin E with less self-reported allergy (P < 0.05). In gene expression analyses, 25(OH)D was associated with higher IL-37, vitamin A with higher IFN-γ and vitamin E with less IL-28 (P < 0.05). LL-37 was associated with less FOXP3, RORC2 and IL-17 in tonsils (P < 0.05). Conclusions Vitamin D and E levels were associated with less allergic disorders. Vitamin A was linked to antiviral and vitamin D with anti-inflammatory activity. LL-37 and was linked to T regulatory cell effects.
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Affiliation(s)
- Varpu Elenius
- Department of Pediatrics, Turku University Hospital, Turku, Finland
- * E-mail:
| | - Oscar Palomares
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University of Madrid (UCM), Madrid, Spain
| | - Matti Waris
- Department of Virology, University of Turku, Turku, Finland
| | - Riitta Turunen
- Department of Pediatrics, Turku University Hospital, Turku, Finland
| | - Tuomo Puhakka
- Department of Otorhinolaryngology, Turku University Hospital, Turku, Finland
- Department of Otorhinolaryngology, Satakunta Central Hospital, Pori, Finland
| | - Beate Rückert
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Tytti Vuorinen
- Department of Virology, University of Turku, Turku, Finland
| | - Tobias Allander
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Tero Vahlberg
- Department of Biostatistics, University of Turku, Turku, Finland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Carlos A. Camargo
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, United States of America
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Tuomas Jartti
- Department of Pediatrics, Turku University Hospital, Turku, Finland
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Mathioudakis AG, Chatzimavridou-Grigoriadou V, Corlateanu A, Vestbo J. Procalcitonin to guide antibiotic administration in COPD exacerbations: a meta-analysis. Eur Respir Rev 2017; 26:26/143/160073. [PMID: 28143877 PMCID: PMC9488925 DOI: 10.1183/16000617.0073-2016] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 09/26/2016] [Indexed: 02/07/2023] Open
Abstract
Challenges in the differentiation of the aetiology of acute exacerbations of chronic obstructive pulmonary disease (AECOPD) have led to significant overuse of antibiotics. Serum procalcitonin, released in response to bacterial infections, but not viral infections, could possibly identify AECOPD requiring antibiotics. In this meta-analysis we assessed the clinical effectiveness of procalcitonin-based protocols to initiate or discontinue antibiotics in patients presenting with AECOPD.Based on a prospectively registered protocol, we reviewed the literature and selected randomised or quasi-randomised trials comparing procalcitonin-based protocols to initiate or discontinue antibiotics versus standard care in AECOPD. We followed Cochrane and GRADE (Grading of Recommendations, Assessment, Development and Evaluation) guidance to assess risk of bias, quality of evidence and to perform meta-analyses.We included eight trials evaluating 1062 patients with AECOPD. Procalcitonin-based protocols decreased antibiotic prescription (relative risk (RR) 0.56, 95% CI 0.43-0.73) and total antibiotic exposure (mean difference (MD) -3.83, 95% CI (-4.32--3.35)), without affecting clinical outcomes such as rate of treatment failure (RR 0.81, 0.62-1.06), length of hospitalisation (MD -0.76, -1.95-0.43), exacerbation recurrence rate (RR 0.96, 0.69-1.35) or mortality (RR 0.99, 0.58-1.69). However, the quality of the available evidence is low to moderate, because of methodological limitations and small overall study population.Procalcitonin-based protocols appear to be clinically effective; however, confirmatory trials with rigorous methodology are required.
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Affiliation(s)
- Alexander G Mathioudakis
- Division of Infection, Immunity and Respiratory Medicine, University Hospital of South Manchester, University of Manchester, Manchester, UK
| | | | - Alexandru Corlateanu
- Department of Respiratory Medicine, State University of Medicine and Pharmacy "Nicolae Testemitanu", Chisinau, Moldova
| | - Jørgen Vestbo
- Division of Infection, Immunity and Respiratory Medicine, University Hospital of South Manchester, University of Manchester, Manchester, UK
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Zhang X, Ding F, Li H, Zhao W, Jing H, Yan Y, Chen Y. Low Serum Levels of Vitamins A, D, and E Are Associated with Recurrent Respiratory Tract Infections in Children Living in Northern China: A Case Control Study. PLoS One 2016; 11:e0167689. [PMID: 27936124 PMCID: PMC5147939 DOI: 10.1371/journal.pone.0167689] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/01/2016] [Indexed: 11/18/2022] Open
Abstract
Background This study aimed to investigate the association of serum concentrations of vitamin A, D, and E with recurrent respiratory tract infections (RRTIs). Methods A total of 1200 children aged at 0.5–14 years were selected via a face-to-face survey in Harbin, China. Among the participants, 600 children with RRTIs comprised the symptomatic group (RRTI group), whereas 600 healthy children were used as controls (control group). Blood samples were collected to measure serum levels of vitamins A and E by HPLC; the serum level of 25-hydroxycholecalciferol (25(OH)D), was measured by HPLC-MS/MS. Results Serum levels of vitamins A and E, as well as 25(OH)D, were significantly lower in the RRTI group than the control group. The conditional logistic regression model and the receiver-operating characteristic curve showed that the insufficiency or deficiency of vitamins A, D, and E was positively correlated with RRTI occurrence (p < 0.05). Conclusions Low serum concentrations of vitamins A, D, and E were associated with RRTIs in children from northern China.
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Affiliation(s)
- Xuguang Zhang
- Department of Clinical Nutrition, Harbin Children's Hospital, Harbin, China
| | - Fengshu Ding
- Department of Clinical Nutrition, Harbin Children's Hospital, Harbin, China
| | - Huaining Li
- Department of Clinical Nutrition, Harbin Children's Hospital, Harbin, China
| | - Wenfeng Zhao
- Department of Clinical Laboratory, Harbin Children's Hospital, Harbin, China
| | - Hong Jing
- Department of Clinical Nutrition, Harbin Children's Hospital, Harbin, China
| | - Yageng Yan
- Department of Clinical Nutrition, The first Affiliated Clinical Hospital of Harbin Medical University, Harbin, China
| | - Yanping Chen
- Department of Clinical Nutrition, Harbin Children's Hospital, Harbin, China
- * E-mail:
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