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Ledina D, Ivić I, Tadin A, Bodulić K, LeDuc JW, Markotić A. A Comprehensive Analysis of Renal and Endothelium Dysfunction Markers Fourteen Years after Hemorrhagic Fever with Renal Syndrome Contraction. Life (Basel) 2024; 14:575. [PMID: 38792596 PMCID: PMC11122023 DOI: 10.3390/life14050575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 04/21/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024] Open
Abstract
While the pathology of acute hemorrhagic fever with renal syndrome (HFRS) has been widely researched, details on the chronic HFRS sequelae remain mainly unexplored. In this study, we analyzed the clinical and laboratory characteristics of 30 convalescent HFRS patients 14 years after the disease contraction, mainly emphasizing several endothelial dysfunction parameters. Convalescent HFRS patients exhibited significantly higher serum levels of erythrocyte sedimentation rate, von Willebrand factor, uric acid, C-reactive protein and immunoglobulin A when compared to healthy individuals. Furthermore, 24 h urine analyses revealed significantly lower sodium and potassium urine levels, as well as significantly higher proteinuria, microalbumin levels and β2-microglobulin levels when compared to healthy individuals. First morning urine analysis revealed significantly higher levels of hematuria in convalescent HFRS patients. None of the additional analyzed endothelium dysfunction markers were significantly different in post-HFRS patients and healthy individuals, including serum and urine P-selectin, E-selectin, soluble intercellular adhesion molecule 1, vascular intercellular adhesion molecule 1 (sVCAM-1) and vascular endothelial growth factor (VEGF). However, binary logistic regression revealed a weak association of serum sVCAM-1 and urine VEGF levels with HFRS contraction. Generally, our findings suggest mild chronic inflammation and renal dysfunction levels in convalescent HFRS patients 14 years after the disease contraction.
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Affiliation(s)
- Dragan Ledina
- Department of Infectious Diseases, Split University Hospital, 21000 Split, Croatia; (D.L.); (I.I.)
- School of Medicine, University of Split, 21000 Split, Croatia
| | - Ivo Ivić
- Department of Infectious Diseases, Split University Hospital, 21000 Split, Croatia; (D.L.); (I.I.)
- School of Medicine, University of Split, 21000 Split, Croatia
| | - Ante Tadin
- Research Department, University Hospital for Infectious Diseases “Dr. Fran Mihaljević”, 10000 Zagreb, Croatia; (A.T.); (K.B.)
| | - Kristian Bodulić
- Research Department, University Hospital for Infectious Diseases “Dr. Fran Mihaljević”, 10000 Zagreb, Croatia; (A.T.); (K.B.)
| | - James W. LeDuc
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77550, USA;
| | - Alemka Markotić
- Research Department, University Hospital for Infectious Diseases “Dr. Fran Mihaljević”, 10000 Zagreb, Croatia; (A.T.); (K.B.)
- School of Medicine, Catholic University of Croatia, 10000 Zagreb, Croatia
- Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
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Tariq M, Kim DM. Hemorrhagic Fever with Renal Syndrome: Literature Review, Epidemiology, Clinical Picture and Pathogenesis. Infect Chemother 2022; 54:1-19. [PMID: 35384417 PMCID: PMC8987181 DOI: 10.3947/ic.2021.0148] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/30/2022] [Indexed: 02/06/2023] Open
Abstract
Hantaviruses can cause two types of infections in humans: hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome. The old world hantaviruses, primarily Hantaan virus (HTNV), responsible for causing HFRS occurs endemically in Asia and Europe. Apodernus agraricus, a striped field mouse, is being considered as main host reservoir for HTNV. Infection in humans is typically accidental and occurs when virus-containing rodent excretions such as urine, feces, or saliva are aerosolized. The major clinical manifestations includes increased vascular permeability causing vascular leakage, acute kidney injury and coagulation abnormalities. The case fatality rate of HFRS varies around 5.0 - 10.0% depending on the causative viral agent. The direct effects of viral infection on endothelial cells, as well as the immunological response to the viral infection, have been suggested to play a key role in the pathogenesis of HFRS. This article summarizes the current knowledge of HFRS epidemiology in Korea and around the globe, etiology, host transmission, clinical presentation, pathogenesis, diagnostic techniques, treatment, and prevention.
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Affiliation(s)
- Misbah Tariq
- Department of Internal Medicine, Chosun University College of Medicine, Gwangju, Korea.,Dow University of Health Sciences, Karachi, Pakistan
| | - Dong-Min Kim
- Department of Internal Medicine, Chosun University College of Medicine, Gwangju, Korea.
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Serum Cytokine Alterations Associated with Age of Patients with Nephropathia Epidemica. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4685288. [PMID: 35059462 PMCID: PMC8766188 DOI: 10.1155/2022/4685288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/13/2021] [Indexed: 12/29/2022]
Abstract
Nephropathia epidemica (NE) is a zoonotic disease caused by hantaviruses transmitted from rodents, endemic in the Republic of Tatarstan, Russia. The disease presents clinically with mild, moderate, and severe forms, and time-dependent febrile, oliguric, and polyuric stages of the disease are also recognized. The patient's cytokine responses have been suggested to play a central role in disease pathogenesis; however, little is known about the different patterns of cytokine expression in NE in cohorts of different ages and sexes. Serum samples and clinical records were collected from 139 patients and 57 controls (healthy donors) and were used to analyze 48 analytes with the Bio-Plex multiplex magnetic bead-based antibody detection kits. Principal component analysis of 137 patient and 55 controls (for which there was full data) identified two components that individually accounted for >15% of the total variance in results and together for 38% of the total variance. PC1 represented a proinflammatory TH17/TH2 cell antiviral cytokine profile and PC2 a more antiviral cytokine profile with patients tending to display one or the other of these. Severity of disease and stage of illness did not show any correlation with PC1 profiles; however, significant differences were seen in patients with high PC1 profiles vs. lower for a number of individual clinical parameters: High PC1 patients showed a reduced number of febrile days, but higher maximum urine output, higher creatinine levels, and lower platelet levels. Overall, the results of this study point towards a stronger proinflammatory profile occurring in younger NE patients, this being associated with markers of acute kidney injury and low levels of high-density cholesterol. This is consistent with previous work indicating that the pathology of NE is immune driven, with an inflammatory immune response being associated with disease and that this immune response is more extreme in younger patients.
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Severity Biomarkers in Puumala Hantavirus Infection. Viruses 2021; 14:v14010045. [PMID: 35062248 PMCID: PMC8778356 DOI: 10.3390/v14010045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/16/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022] Open
Abstract
Annually, over 10,000 cases of hemorrhagic fever with renal syndrome (HFRS) are diagnosed in Europe. Puumala hantavirus (PUUV) causes most of the European HFRS cases. PUUV causes usually a relatively mild disease, which is rarely fatal. However, the severity of the infection varies greatly, and factors affecting the severity are mostly unrevealed. Host genes are known to have an effect. The typical clinical features in PUUV infection include acute kidney injury, thrombocytopenia, and increased vascular permeability. The primary target of hantavirus is the endothelium of the vessels of different organs. Although PUUV does not cause direct cytopathology of the endothelial cells, remarkable changes in both the barrier function of the endothelium and the function of the infected endothelial cells occur. Host immune or inflammatory mechanisms are probably important in the development of the capillary leakage. Several immunoinflammatory biomarkers have been studied in the context of assessing the severity of HFRS caused by PUUV. Most of them are not used in clinical practice, but the increasing knowledge about the biomarkers has elucidated the pathogenesis of PUUV infection.
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Coagulopathy in Acute Puumala Hantavirus Infection. Viruses 2021; 13:v13081553. [PMID: 34452419 PMCID: PMC8402851 DOI: 10.3390/v13081553] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/27/2021] [Accepted: 08/02/2021] [Indexed: 12/26/2022] Open
Abstract
Puumala hantavirus (PUUV) causes a hemorrhagic fever with renal syndrome (HFRS), also called nephropathia epidemica (NE), which is mainly endemic in Europe and Russia. The clinical features include a low platelet count, altered coagulation, endothelial activation, and acute kidney injury (AKI). Multiple connections between coagulation pathways and inflammatory mediators, as well as complement and kallikrein–kinin systems, have been reported. The bleeding symptoms are usually mild. PUUV-infected patients also have an increased risk for disseminated intravascular coagulation (DIC) and thrombosis.
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Klingström J, Smed-Sörensen A, Maleki KT, Solà-Riera C, Ahlm C, Björkström NK, Ljunggren HG. Innate and adaptive immune responses against human Puumala virus infection: immunopathogenesis and suggestions for novel treatment strategies for severe hantavirus-associated syndromes. J Intern Med 2019; 285:510-523. [PMID: 30663801 PMCID: PMC6850289 DOI: 10.1111/joim.12876] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two related hyperinflammatory syndromes are distinguished following infection of humans with hantaviruses: haemorrhagic fever with renal syndrome (HFRS) seen in Eurasia and hantavirus pulmonary syndrome (HPS) seen in the Americas. Fatality rates are high, up to 10% for HFRS and around 35%-40% for HPS. Puumala virus (PUUV) is the most common HFRS-causing hantavirus in Europe. Here, we describe recent insights into the generation of innate and adaptive cell-mediated immune responses following clinical infection with PUUV. First described are studies demonstrating a marked redistribution of peripheral blood mononuclear phagocytes (MNP) to the airways, a process that may underlie local immune activation at the site of primary infection. We then describe observations of an excessive natural killer (NK) cell activation and the persistence of highly elevated numbers of NK cells in peripheral blood following PUUV infection. A similar vigorous CD8 Tcell response is also described, though Tcell responses decline with viraemia. Like MNPs, many NK cells and CD8 T cells also localize to the lung upon acute PUUV infection. Following this, findings demonstrating the ability of hantaviruses, including PUUV, to cause apoptosis resistance in infected target cells, are described. These observations, and associated inflammatory cytokine responses, may provide new insights into HFRS and HPS disease pathogenesis. Based on similarities between inflammatory responses in severe hantavirus infections and other hyperinflammatory disease syndromes, we speculate whether some therapeutic interventions that have been successful in the latter conditions may also be applicable in severe hantavirus infections.
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Affiliation(s)
- J Klingström
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - A Smed-Sörensen
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - K T Maleki
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - C Solà-Riera
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - C Ahlm
- Department of Clinical Microbiology, Infectious Diseases, Umeå University Hospital, Umeå University, Umeå, Sweden
| | - N K Björkström
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - H G Ljunggren
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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Hepojoki J, Vaheri A, Strandin T. The fundamental role of endothelial cells in hantavirus pathogenesis. Front Microbiol 2014; 5:727. [PMID: 25566236 PMCID: PMC4273638 DOI: 10.3389/fmicb.2014.00727] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 12/03/2014] [Indexed: 01/17/2023] Open
Abstract
Hantavirus, a genus of rodent- and insectivore-borne viruses in the family Bunyaviridae, is a group of emerging zoonotic pathogens. Hantaviruses cause hemorrhagic fever with renal syndrome and hantavirus cardiopulmonary syndrome in man, often with severe consequences. Vascular leakage is evident in severe hantavirus infections, and increased permeability contributes to the pathogenesis. This review summarizes the current knowledge on hantavirus interactions with hematopoietic and endothelial cells, and their effects on the increased vascular permeability.
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Affiliation(s)
- Jussi Hepojoki
- Department of Virology, Haartman Institute, University of Helsinki Helsinki, Finland
| | - Antti Vaheri
- Department of Virology, Haartman Institute, University of Helsinki Helsinki, Finland
| | - Tomas Strandin
- Department of Virology, Haartman Institute, University of Helsinki Helsinki, Finland
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Baigildina AA, Khaiboullina SF, Martynova EV, Anokhin VA, Lombardi VC, Rizvanov AA. Inflammatory cytokines kinetics define the severity and phase of nephropathia epidemica. Biomark Med 2014; 9:99-107. [PMID: 25313675 DOI: 10.2217/bmm.14.88] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
AIMS Nephropathia epidemica (NE) is a form of hemorrhagic fever with renal syndrome associated with the Puumala virus species of Hantavirus. The pathogenesis of NE is not well understood; therefore, investigating the inflammatory cytokine response to infection may provide useful knowledge in deciphering the pathophysiology of NE. MATERIALS & METHODS Using Luminex and ELISA, we analyzed the serum of 137 NE cases and 44 controls to investigate if serum cytokines associate with different clinical presentations. RESULTS Serum levels of TNF-α and IL-1β are associated with disease severity while upregulation of IL-6, CXCL10, CCL2 and CCL3 are associated with clinical presentation. CONCLUSION Inflammatory cytokine kinetics associate with the severity and phase of NE. Our data support a role for inflammatory cytokines in the pathophysiology of NE.
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Affiliation(s)
- Asia A Baigildina
- Bashkir State Medical University, Ufa, Republic of Bashkortostan, Russian Federation
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Khaiboullina SF, Martynova EV, Khamidullina ZL, Lapteva EV, Nikolaeva IV, Anokhin VV, Lombardi VC, Rizvanov AA. Upregulation of IFN-γ and IL-12 is associated with a milder form of hantavirus hemorrhagic fever with renal syndrome. Eur J Clin Microbiol Infect Dis 2014; 33:2149-56. [PMID: 24942310 DOI: 10.1007/s10096-014-2176-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 05/29/2014] [Indexed: 01/19/2023]
Abstract
Hantavirus hemorrhagic fever with renal syndrome (HFRS) is a zoonotic disease characterized by acute onset, fever, malaise, and back pain. As the disease progresses, hemorrhagic disturbances and kidney dysfunctions predominate. The examination of tissue collected postmortem supports the premise that virus replication is not responsible for this pathology; therefore, it is widely believed that virus-induced immune responses lead to the clinical manifestations associated with HFRS. The overproduction of inflammatory cytokines is commonly reported in subjects with HFRS and has given rise to the hypothesis that a so-called "cytokine storm" may play a pivotal role in the pathogenesis of this disease. Currently, supportive care remains the only effective treatment for HFRS. Our data show that serum levels of interferon (IFN)-γ, interleukin (IL)-10, CCL2, and IL-12 are upregulated in HFRS cases when compared to healthy controls and the level of upregulation is dependent on the phase and severity of the disease. Furthermore, we observed an association between the mild form of the disease and elevated serum levels of IFN-γ and IL-12. Collectively, these observations suggest that the administration of exogenous IFN-γ and IL-12 may provide antiviral benefits for the treatment of HFRS and, thus, warrants further investigations.
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Affiliation(s)
- S F Khaiboullina
- Department of Biochemistry and Molecular Biology, University of Nevada School of Medicine, WPI, 1664 N. Virginia St., MS 0552, Reno, NV, 89557, USA
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Connolly-Andersen AM, Thunberg T, Ahlm C. Endothelial activation and repair during hantavirus infection: association with disease outcome. Open Forum Infect Dis 2014; 1:ofu027. [PMID: 25734100 PMCID: PMC4324194 DOI: 10.1093/ofid/ofu027] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 04/22/2014] [Indexed: 01/06/2023] Open
Abstract
Background. Endothelial activation and dysfunction play a central role in the pathogenesis of sepsis and viral hemorrhagic fevers. Hantaviral disease is a viral hemorrhagic fever and is characterized by capillary dysfunction, although the underlying mechanisms for hantaviral disease are not fully elucidated. Methods. The temporal course of endothelial activation and repair were analyzed during Puumala hantavirus infection and associated with disease outcome and a marker for hypoxia, insulin-like growth factor binding protein 1 (IGFBP-1). The following endothelial activation markers were studied: endothelial glycocalyx degradation (syndecan-1) and leukocyte adhesion molecules (soluble vascular cellular adhesion molecule 1, intercellular adhesion molecule 1, and endothelial selectin). Cytokines associated with vascular repair were also analyzed (vascular endothelial growth factor, erythropoietin, angiopoietin, and stromal cell-derived factor 1). Results. Most of the markers we studied were highest during the earliest phase of hantaviral disease and associated with clinical and laboratory surrogate markers for disease outcome. In particular, the marker for glycocalyx degradation, syndecan-1, was significantly associated with levels of thrombocytes, albumin, IGFBP-1, decreased blood pressure, and disease severity. Conclusions. Hantaviral disease outcome was associated with endothelial dysfunction. Consequently, the endothelium warrants further investigation when designing future medical interventions.
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Affiliation(s)
| | - Therese Thunberg
- Division of Infectious Diseases, Department of Clinical Microbiology , Umeå University , Umeå , Sweden
| | - Clas Ahlm
- Division of Infectious Diseases, Department of Clinical Microbiology , Umeå University , Umeå , Sweden
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Mustonen J, Mäkelä S, Outinen T, Laine O, Jylhävä J, Arstila PT, Hurme M, Vaheri A. The pathogenesis of nephropathia epidemica: new knowledge and unanswered questions. Antiviral Res 2013; 100:589-604. [PMID: 24126075 DOI: 10.1016/j.antiviral.2013.10.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 09/27/2013] [Accepted: 10/04/2013] [Indexed: 01/20/2023]
Abstract
Puumala virus (PUUV) causes an acute hemorrhagic fever with renal syndrome (HFRS), a zoonosis also called nephropathia epidemica (NE). The reservoir host of PUUV is the bank vole (Myodes glareolus). Herein we review the main clinical manifestations of NE, acute kidney injury, increased vascular permeability, coagulation abnormalities as well as pulmonary, cardiac, central nervous system and ocular manifestations of the disease. Several biomarkers of disease severity have recently been discovered: interleukin-6, pentraxin-3, C-reactive protein, indoleamine 2,3-dioxygenase, cell-free DNA, soluble urokinase-type plasminogen activator, GATA-3 and Mac-2 binding protein. The role of cytokines, vascular endothelial growth hormone, complement, bradykinin, cellular immune response and other mechanisms in the pathogenesis of NE as well as host genetic factors will be discussed. Finally therapeutic aspects and directions for further research will be handled.
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Affiliation(s)
- Jukka Mustonen
- School of Medicine, University of Tampere, Tampere, Finland; Department of Internal Medicine, Tampere University Hospital, Tampere, Finland.
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Kyriakidis I, Papa A. Serum TNF-α, sTNFR1, IL-6, IL-8 and IL-10 levels in hemorrhagic fever with renal syndrome. Virus Res 2013; 175:91-4. [PMID: 23603136 DOI: 10.1016/j.virusres.2013.03.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 03/23/2013] [Accepted: 03/23/2013] [Indexed: 12/25/2022]
Abstract
It is generally accepted that the pathogenesis of hantavirus infections is the result of virus-mediated host immune response. Hantaviruses, and mainly Dobrava-Belgrade virus, are present in Greece, and cause to humans hemorrhagic fever with renal syndrome (HFRS). Serum IL-6, IL-8, IL-10, TNF-α and sTNFR1 levels were measured in 29 HFRS Greek patients. Significant higher sTNFR1, IL-6, IL-8 and IL-10 levels were observed in severe than in mild/moderate cases, while TNF-α did not seem to be associated with disease severity. Correlations between cytokine levels and their fluctuation over time after onset of the illness, along with comparisons from previously published data on the field, led in building an immune response pattern for HFRS.
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Affiliation(s)
- Ioannis Kyriakidis
- 1st Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Wang M, Wang J, Wang T, Li J, Hui L, Ha X. Thrombocytopenia as a predictor of severe acute kidney injury in patients with Hantaan virus infections. PLoS One 2013; 8:e53236. [PMID: 23301047 PMCID: PMC3534714 DOI: 10.1371/journal.pone.0053236] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 11/27/2012] [Indexed: 11/19/2022] Open
Abstract
Background Hematological abnormalities often occur several days before kidney injury in patients with hemorrhagic fever with renal syndrome (HFRS). We aimed to investigate the prevalence and prognostic value of the early hematological markers in patients with HFRS caused by Hantaan virus (HTNV) infection. Methods In a retrospective cohort study, we analyzed the case records of 112 patients with acute HTNV infection and evaluated the hematological markers for early prediction and risk stratification of HFRS patients with acute kidney injury (AKI). Results Of 112 patients analyzed, 66 (59%) developed severe AKI, defined as either receipt of acute dialysis or increased serum creatinine ≥354 µmol/L. The prognostic accuracy of hematological markers, as quantified by the area under the receiver-operating-characteristic curve (AUC), was highest with the nadir platelet count (AUC, 0.89; 95% CI, 0.83–0.95), as compared with the admission platelet count (AUC, 0.84; 95% CI, 0.77–0.92), and the admission and peak leukocyte counts. The nadir platelet count correlated moderately with the levels of peak blood urea nitrogen (r = –0.616) and serum creatinine (r = –0.589), the length of hospital stay (r = –0.599), and the number of dialysis sessions that each patient received during hospital stay (r = –0.625). By multivariate analysis, decreased nadir platelet count remained independently associated with the development of severe AKI (odds ratio, 27.57; 95% CI, 6.96–109.16; P<0.0001). Conclusions Thrombocytopenia, rather than leukocytosis, is independently associated with subsequent severe AKI among patients with acute HTNV infection.
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Affiliation(s)
- Meiliang Wang
- Center for Experimental Medicine, Lanzhou General Hospital, Lanzhou Military Command, Lanzhou, Gansu, China.
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Huttunen NP, Mäkelä S, Pokka T, Mustonen J, Uhari M. Systematic literature review of symptoms, signs and severity of serologically confirmed nephropathia epidemica in paediatric and adult patients. ACTA ACUST UNITED AC 2011; 43:405-10. [DOI: 10.3109/00365548.2011.559666] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Outinen TK, Mäkelä SM, Ala-Houhala IO, Huhtala HS, Hurme M, Paakkala AS, Pörsti IH, Syrjänen JT, Mustonen JT. The severity of Puumala hantavirus induced nephropathia epidemica can be better evaluated using plasma interleukin-6 than C-reactive protein determinations. BMC Infect Dis 2010; 10:132. [PMID: 20500875 PMCID: PMC2885391 DOI: 10.1186/1471-2334-10-132] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 05/25/2010] [Indexed: 12/16/2022] Open
Abstract
Background Nephropathia epidemica (NE) is a Scandinavian type of hemorrhagic fever with renal syndrome caused by Puumala hantavirus. The clinical course of the disease varies greatly in severity. The aim of the present study was to evaluate whether plasma C-reactive protein (CRP) and interleukin (IL)-6 levels associate with the severity of NE. Methods A prospectively collected cohort of 118 consecutive hospital-treated patients with acute serologically confirmed NE was examined. Plasma IL-6, CRP, and creatinine, as well as blood cell count and daily urinary protein excretion were measured on three consecutive days after admission. Plasma IL-6 and CRP levels higher than the median were considered high. Results We found that high IL-6 associated with most variables reflecting the severity of the disease. When compared to patients with low IL-6, patients with high IL-6 had higher maximum blood leukocyte count (11.9 vs 9.0 × 109/l, P = 0.001) and urinary protein excretion (2.51 vs 1.68 g/day, P = 0.017), as well as a lower minimum blood platelet count (55 vs 80 × 109/l, P < 0.001), hematocrit (0.34 vs 0.38, P = 0.001), and urinary output (1040 vs 2180 ml/day, P < 0.001). They also stayed longer in hospital than patients with low IL-6 (8 vs 6 days, P < 0.001). In contrast, high CRP did not associate with severe disease. Conclusions High plasma IL-6 concentrations associate with a clinically severe acute Puumala hantavirus infection, whereas high plasma CRP as such does not reflect the severity of the disease.
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Affiliation(s)
- Tuula K Outinen
- Department of Internal Medicine, Tampere University Hospital, POBox 2000, Tampere, FI-33521, Finland.
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Low levels of serum vitronectin associated with clinical phases in patients with hemorrhagic fever with renal syndrome. Clin Exp Med 2009; 9:297-301. [PMID: 19408099 DOI: 10.1007/s10238-009-0050-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2009] [Accepted: 04/01/2009] [Indexed: 10/20/2022]
Abstract
beta(3) integrin has been identified as a cellular receptor for Hantaan virus which causes hemorrhagic fever with renal syndrome (HFRS). As one of the ligands of beta(3) integrin, vitronectin (VN) may be altered in HFRS. In this study, changes of serum VN levels were determined in 112 patients with HFRS and 30 age- and sex-matched healthy controls by quantitative sandwich enzyme immunoassay. The levels of serum VN were analyzed in patients at various phases of HFRS and with different severity of clinical types. Serum VN levels in patients with HFRS, at all clinical phases except the convalescent phase, were significantly decreased compared with those in the controls (P < 0.01). The serum levels of VN decreased at febrile phase, maintained at the lowest status during hypotensive and oliguric phases, started to increase from polyuric phase and reached almost normal condition till convalescent phase. The levels of serum VN between patients with milder and more severe clinical types showed no significant difference at each phase (P > 0.05). These results suggest that VN level was altered during the course of HFRS and chronological changes of serum levels of VN may correlate with the evolution of the disease.
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Rusnak JM, Byrne WR, Chung KN, Gibbs PH, Kim TT, Boudreau EF, Cosgriff T, Pittman P, Kim KY, Erlichman MS, Rezvani DF, Huggins JW. Experience with intravenous ribavirin in the treatment of hemorrhagic fever with renal syndrome in Korea. Antiviral Res 2009; 81:68-76. [PMID: 18977392 PMCID: PMC7127354 DOI: 10.1016/j.antiviral.2008.09.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Revised: 09/24/2008] [Accepted: 09/25/2008] [Indexed: 10/25/2022]
Abstract
Results of a clinical study using intravenous (IV) ribavirin for treating Department of Defense personnel with hemorrhagic fever with renal syndrome (HFRS) acquired in Korea from 1987 to 2005 were reviewed to determine the clinical course of HFRS treated with IV ribavirin. A total of 38 individuals enrolled in the study had subsequent serological confirmation of HFRS. Four of the 38 individuals received three or fewer doses of ribavirin and were excluded from treatment analysis. Of the remaining 34 individuals, oliguria was present in one individual at treatment initiation; none of the remaining 33 subjects developed oliguria or required dialysis. The mean peak serum creatinine was 3.46 mg/dl and occurred on day 2 of ribavirin therapy. Both the peak serum creatinine and the onset of polyuria occurred on mean day 6.8 of illness. Reversible hemolytic anemia was the main adverse event of ribavirin, with a >or=25% decrease in hematocrit observed in 26/34 (76.5%) individuals. While inability to adjust for all baseline variables prevents comparison to historical cohorts in Korea where oliguria has been reported in 39-69% cases and dialysis required in approximately 40% HFRS cases caused by Hantaan virus, the occurrence of 3% oliguria and 0% dialysis requirement in the treatment cohort is supportive of a previous placebo-controlled HFRS trial in China where IV ribavirin given early resulted in decreased occurrence of oliguria and decreased severity of renal insufficiency.
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Affiliation(s)
- Janice M Rusnak
- Division of Medicine, U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD 21702, USA.
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Abstract
Hantaviruses, similar to several emerging zoonotic viruses, persistently infect their natural reservoir hosts, without causing overt signs of disease. Spillover to incidental human hosts results in morbidity and mortality mediated by excessive proinflammatory and cellular immune responses. The mechanisms mediating the persistence of hantaviruses and the absence of clinical symptoms in rodent reservoirs are only starting to be uncovered. Recent studies indicate that during hantavirus infection, proinflammatory and antiviral responses are reduced and regulatory responses are elevated at sites of increased virus replication in rodents. The recent discovery of structural and non-structural proteins that suppress type I interferon responses in humans suggests that immune responses in rodent hosts could be mediated directly by the virus. Alternatively, several host factors, including sex steroids, glucocorticoids, and genetic factors, are reported to alter host susceptibility and may contribute to persistence of hantaviruses in rodents. Humans and reservoir hosts differ in infection outcomes and in immune responses to hantavirus infection; thus, understanding the mechanisms mediating viral persistence and the absence of disease in rodents may provide insight into the prevention and treatment of disease in humans. Consideration of the coevolutionary mechanisms mediating hantaviral persistence and rodent host survival is providing insight into the mechanisms by which zoonotic viruses have remained in the environment for millions of years and continue to be transmitted to humans.
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Affiliation(s)
- Judith D. Easterbrook
- The W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Sabra L. Klein
- The W. Harry Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
- * E-mail:
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Liu Z, Zhao Q, Han Q, Gao M, Zhang N. Serum thrombospondin-1 is altered in patients with hemorrhagic fever with renal syndrome. J Med Virol 2008; 80:1799-803. [PMID: 18712840 DOI: 10.1002/jmv.21270] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hemorrhagic fever with renal syndrome (HFRS) is a severe acute viral disease with pathological changes of impaired capillary and small vessels and thrombocytopenia. In this study, serum thrombospondin (TSP)-1 concentration in patients with HFRS was determined to explore its possible role in the pathogenesis of HFRS. The concentration of TSP-1 was measured using a competitive enzyme-linked immunoabsorbent assay. Significantly decreased levels of serum TSP-1 were observed in HFRS patients at febrile and hypotensive phases compared with those in the controls. The serum levels of TSP-1 in HFRS patients with more severe clinical types was reduced more profoundly than those in patients with milder clinical types at febrile and hypotensive phases, although the differences in TSP-1 were not significant. It was indicated that insufficient production or increased consumption of TSP-1, or both of these, may contribute to the impairment of capillary and small vessels and the development of hypotension at the early stage of HFRS, and the decreased degree may be associated with disease severity.
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Affiliation(s)
- Zhengwen Liu
- Department of Infectious Diseases, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi' an, Shaanxi, China.
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20
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Abstract
Hantaviral diseases have been recognized for hundreds of years but, until 1976, they had not been associated with an infectious agent. When Lee and colleagues isolated what is now known as Hantaan virus, the techniques they introduced allowed further investigations into the etiology of the classical hantavirus disease, hemorrhagic fever with renal syndrome (HFRS), now known to be caused by any of multiple hantaviruses. The discovery of hantavirus pulmonary syndrome (HPS) in the New World, and that it also can be caused by any of multiple hantaviruses (family Bunyaviridae, genus Hantavirus), has opened an entire field of epidemiologic, virologic, molecular, behavioral, and ecologic studies of these viruses. There appears to be a single hantavirus-single rodent host association, such that understanding the idiosyncrasies of each rodent host species and the ecologic variables that affect them are recognized as critical if we are to reduce human risk for infection. This chapter summarizes what is known about hantaviruses with regard to history of these viruses, their taxonomy, recognized geographical distribution, ecologic factors impacting their maintenance and spread of hantaviruses, effect of rodent behavior on hantavirus transmission, influence of host factors on susceptibility to and transmission of hantaviruses, and transmission of hantaviruses from rodents to humans. In addition, we summarize all these complexities and provide suggestions for future research directions.
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Affiliation(s)
- S L Klein
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA.
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21
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Kim YK, Lee SC, Kim C, Heo ST, Choi C, Kim JM. Clinical and laboratory predictors of oliguric renal failure in haemorrhagic fever with renal syndrome caused by Hantaan virus. J Infect 2006; 54:381-6. [PMID: 16930718 DOI: 10.1016/j.jinf.2006.07.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Revised: 07/18/2006] [Accepted: 07/18/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Haemorrhagic fever with renal syndrome (HFRS), caused by hantavirus infection, develops into acute renal failure (ARF) of variable degrees of severity. We investigated the early predictive markers for oliguric ARF in HFRS patients. METHODS A retrospective cohort study was performed of 61 patients with HFRS between 2000 and 2004. These patients were categorized into either oliguric or non-oliguric ARF groups according to their urine output (<400 ml/24 h). The clinical characteristics were compared between the two groups. RESULTS Of the 61 patients, 24 (39.3%) were classified as oliguric ARF and 37 (60.7%) as non-oliguric ARF. The peak serum Cr was 10.8 (IQR 9.1-12.4) mg/dl in oliguric ARF and 4.4 (IQR 3.1-6.0) mg/dl in non-oliguric ARF (p<0.001). The risk for developing oliguric ARF significantly increased in the cases with leukocyte count (> or =14 x 10(9)/L, aOR 2.2, 95% CI 1.0-4.9; p=0.039), elevated aspartate aminotransferase (> or =110 U/L, aOR 11.0, 95% CI 2.1-57.9; p=0.005) and the presence of microscopic haematuria (> or =5/HPF, aOR 9.2, 95% CI 1.4-60.3; p=0.021) at the time of admission. CONCLUSION The leukocyte count, level of aspartate aminotransferase and microscopic haematuria at admission would be useful to predict for the subsequent development of oliguric ARF in HFRS.
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Affiliation(s)
- Young Keun Kim
- Department of Internal Medicine, Yonsei University College of Medicine, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-752, South Korea
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22
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Rasche FM, Uhel B, Krüger DH, Karges W, Czock D, Hampl W, Keller F, Meisel H, von Müller L. Thrombocytopenia and acute renal failure in Puumala hantavirus infections. Emerg Infect Dis 2004; 10:1420-5. [PMID: 15496243 PMCID: PMC3320406 DOI: 10.3201/eid1008.031069] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Low platelet counts are a novel predictive marker suitable for risk-adapted patient management. Nephropathia epidemica, caused by Puumala virus (PUUV) infection, is a form of hemorrhagic fever with renal syndrome of variable severity. Early prognostic markers for the severity of renal failure have not been established. We evaluated clinical and laboratory parameters of 15 consecutive patients with acute PUUV infection, which is endemic in the Alb-Danube region, South Germany. Severe renal failure (serum creatinine >620 µmol/L) was observed in seven patients; four required hemodialysis treatment. Low platelet count (<60 x 109/L), but not leukocyte count, C-reactive protein, or other parameters obtained at the initial evaluation, was significantly associated with subsequent severe renal failure (p = 0.004). Maximum serum creatinine was preceded by platelet count nadirs by a median of 4 days. Thrombocytopenia <60 x 109/L appears predictive of a severe course of acute renal failure in nephropathia epidemica, with potential value for risk-adapted clinical disease management.
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Affiliation(s)
- Franz Maximilian Rasche
- Division of Nephrology, Department of Internal Medicine II, University Hospital Ulm, Ulm, Germany.
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Mäkelä S, Mustonen J, Ala-Houhala I, Hurme M, Koivisto AM, Vaheri A, Pasternack A. Urinary excretion of interleukin-6 correlates with proteinuria in acute Puumala hantavirus-induced nephritis. Am J Kidney Dis 2004; 43:809-16. [PMID: 15112171 DOI: 10.1053/j.ajkd.2003.12.044] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Nephropathia epidemica (NE) is a mild type of hemorrhagic fever with renal syndrome caused by Puumala Hantavirus. Cytokines are thought to have an important role in the pathogenesis of NE. The aim of this study is to evaluate whether cytokines contribute to renal involvement in NE. METHODS Overnight urinary excretion of interleukin-1beta (IL-1beta), IL-1 receptor antagonist (IL-1Ra), IL-6, tumor necrosis factor-alpha (TNF-alpha), albumin, immunoglobulin G (IgG), and alpha1-microglobulin and quantitative 24-hour urinary protein excretion were measured for 3 consecutive days from 70 hospitalized patients with acute NE (49 men, 21 women; age, 15 to 70 years; median age, 39 years). Plasma levels of the respective cytokines also were measured. Urinary collections were repeated after 1 year. The control group for blood samples included 400 healthy blood donors. RESULTS Maximum median urinary IL-6 excretion in the acute phase of NE was increased compared with values detected after 1 year (49.5 versus 0.7 pg/min; P < 0.001). Correspondingly, maximum median plasma IL-6 concentration in patients was increased compared with controls (14.6 versus 1.2 pg/mL; P < 0.001). Urinary IL-6 excretion correlated with urinary albumin, IgG, and protein excretion (r = 0.79; P < 0.001; r = 0.76; P < 0.001; and r = 0.65; P < 0.001, respectively), but not plasma IL-6 levels (r = 0.18; P = 0.148). CONCLUSION Plasma IL-6 concentrations and urinary IL-6 excretion were markedly increased in patients with acute NE, but there was no correlation between plasma and urinary IL-6 levels. The high urinary IL-6 levels might reflect local production of this proinflammatory cytokine in the kidneys during acute infection.
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Affiliation(s)
- Satu Mäkelä
- Medical School, University of Tampere and Tampere University Hospital, Tampere, Finland.
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Osterlund P, Orpana A, Elomaa I, Repo H, Joensuu H. Raltitrexed treatment promotes systemic inflammatory reaction in patients with colorectal carcinoma. Br J Cancer 2002; 87:591-9. [PMID: 12237767 PMCID: PMC2364241 DOI: 10.1038/sj.bjc.6600520] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2001] [Revised: 06/07/2002] [Accepted: 07/15/2002] [Indexed: 11/08/2022] Open
Abstract
We studied longitudinally inflammatory reactions and serum C-reactive protein (S-CRP) levels in 52 colorectal cancer patients treated with a median of six 3-weekly cycles of raltitrexed 1.5-3.0 mg m(-2) combined with oral carmofur (1-hexylcarbomoyl-5-fluorouracil) 300-400 mg m(-2) on cycle days 2-14. Thirty-nine (75%) of these patients had fever on days 2 to 9 after receiving raltitrexed, 49 (94%) had fatigue Gr. > or = 1, and 49 (94%) elevated S-CRP without a documented infection. The systemic inflammatory composite score (consists of body temperature, fatigue, S-CRP, interleukin-6 (S-IL-6), S-IL-8, and tumour necrosis factor-alpha (S-TNF alpha) levels) was calculated in a cross-sectional one-cycle study involving 60 colorectal cancer patients treated with single-agent raltitrexed, raltitrexed and carmofur, or 5-fluorouracil-based chemotherapy (n=20 in each group). The median S-CRP, S-IL-6, and S-TNF alpha levels were higher 7 days after giving raltitrexed (57 vs 23 mg l(-1), 64 vs 10 ng l(-1), and 11 vs 10 ng l(-1), respectively) or raltitrexed+carmofur (142 vs 10 mg l(-1), 64 vs 10 ng l(-1), and 16 vs 9 ng l(-1), respectively) than at baseline (P<0.01 for each comparison), but not when 5-fluorouracil-based regimens were administered. These findings suggest that colorectal cancer patients treated with raltitrexed may develop drug-related systemic inflammation, which may be difficult to discriminate from infection.
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Affiliation(s)
- P Osterlund
- Department of Oncology, Helsinki University Central Hospital, Haartmaninkatu 4, FIN-00029 Helsinki, Finland.
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Kylänpää-Bäck ML, Takala A, Kemppainen E, Puolakkainen P, Kautiainen H, Jansson SE, Haapiainen R, Repo H. Cellular markers of systemic inflammation and immune suppression in patients with organ failure due to severe acute pancreatitis. Scand J Gastroenterol 2001; 36:1100-7. [PMID: 11589386 DOI: 10.1080/003655201750422738] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Few data are available on cellular markers of systemic inflammation and immune suppression in early acute pancreatitis. The aim of this study was to describe the cellular immune inflammatory status of patients with acute pancreatitis in relation to development of organ failure. METHODS Prospective study including 89 patients who presented within 72 h of onset of pain. Fifty-eight of them had mild disease (Grade I group), 19 had severe disease with no organ dysfunction (Grade II group) and 12 had severe disease with organ dysfunction (Grade III group). Serial blood samples were collected on admission and following 2 days. Phagocyte surface markers were analysed using flow cytometry. RESULTS The proportion of HLA-DR-positive monocytes, a marker of immune suppression, and CD11b expression level on neutrophils and monocytes, a marker of systemic inflammation, were related to Grades I-III (P for trend <0.001). In Grade III patients, the proportion of HLA-DR-positive monocytes was low on presentation, or decreased rapidly during follow-up, whereas CD11b expression levels were persistently high. L-selectin and monocyte CD14 expression levels were not related to disease severity. CONCLUSIONS Immune suppression develops early, rapidly and unexpectedly in patients with acute pancreatitis. Monitoring immune inflammatory status may provide the means by which to identify patients who benefit from biological response modifier therapy.
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Nupponen I, Andersson S, Järvenpää AL, Kautiainen H, Repo H. Neutrophil CD11b expression and circulating interleukin-8 as diagnostic markers for early-onset neonatal sepsis. Pediatrics 2001; 108:E12. [PMID: 11433091 DOI: 10.1542/peds.108.1.e12] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To assess neutrophil CD11b and circulating interleukin 8 (IL-8) as markers of early-onset infection in neonates. METHODS The study comprised 39 neonates, with a gestational age of 29 to 41 weeks, suspected of infection within 48 hours of life. Neutrophil surface expression of CD11b was quantified with flow cytometry and plasma IL-8 with an enzyme-linked immunosorbent assay. Both data were available from 35 of 39 neonates. Serum C-reactive protein was determined at initial evaluation and, later, on the basis of the clinical picture. Neonates were allocated retrospectively into 2 groups. In the sepsis group (N = 22), 4 had culture-proven sepsis, and 14 had an antenatal risk factor for infection. In the possible-infection group (N = 13), each neonate had a noninfective disorder, but co-occurring infection remained a possibility. Twelve healthy term infants served as controls. RESULTS CD11b expression and IL-8 levels both increased in order of sepsis > possible infection > healthy. Sensitivity and specificity by the CD11b test for sepsis were equal, at 1.00, and those by the IL-8 test 0.91 and 1.00, respectively; 6 (17.1%) of the 35 neonates had CD11b and IL-8 below cutoff levels. CONCLUSIONS Measuring neutrophil CD11b expression and circulating IL-8 provides a means to identify early-onset neonatal sepsis. The findings may be helpful in planning strategies to safely reduce the use of antimicrobials in neonates.
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Affiliation(s)
- I Nupponen
- Hospital for Children and Adolescents, University of Helsinki, Finland.
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Vapalahti O, Lundkvist A, Vaheri A. Human immune response, host genetics, and severity of disease. Curr Top Microbiol Immunol 2001; 256:153-69. [PMID: 11217403 DOI: 10.1007/978-3-642-56753-7_9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- O Vapalahti
- Haartman Institute, University of Helsinki, Finland
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