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Aydın S, Mert A, Yılmaz M, Al Maslamani M, Rahimi BA, Ayoade F, El-Kholy A, Belitova M, Sengel BE, Jalal S, Albayrak A, Alatawi JA, Szabo BG, Ganeshan RS, Nsutebu E, Poojary A, Akkoyunlu Y, Alkan S, Elik DB, Eser-Karlidag G, Santos L, Moroti R, Altın N, Gürbüz E, Ulusoy TÜ, Sipahi OR, Çaşkurlu H, Esmaoğlu A, Lakatos B, El-Sayed NM, Marıno A, Cascio A, Mihai A, Dumitru IM, Pshenichnaya N, Ripon RK, Makek MJ, Rashid N, Baljić R, Dascalu C, Sincan G, Kızmaz YU, Madendere B, Erdem H. Understanding clinical outcomes and factors influencing mortality in intensive care unit patients with COVID-19-associated candidemia. Mycoses 2024; 67:e13687. [PMID: 38214425 DOI: 10.1111/myc.13687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND During the COVID pandemic, research has shown an increase in candidemia cases following severe COVID infection and the identification of risk factors associated with candidemia. However, there is a lack of studies that specifically explore clinical outcomes and mortality rates related to candidemia after COVID infection. OBJECTIVES The aim of this international study was to evaluate the clinical outcomes and identify factors influencing mortality in patients who developed candidemia during their COVID infection. PATIENTS/METHODS This study included adult patients (18 years of age or older) admitted to the intensive care unit (ICU) and diagnosed with COVID-associated candidemia (CAC). The research was conducted through ID-IRI network and in collaboration with 34 medical centres across 18 countries retrospectively, spanning from the beginning of the COVID pandemic until December 2021. RESULTS A total of 293 patients diagnosed with CAC were included. The median age of the patients was 67, and 63% of them were male. The most common Candida species detected was C. albicans. The crude 30-day mortality rate was recorded at 62.4%. The logistic regression analysis identified several factors significantly impacting mortality, including age (odds ratio [OR] 1.04, 95% confidence interval [CI] 1.02-1.07, p < .0005), SOFA score (OR 1.307, 95% CI 1.17-1.45, p < .0005), invasive mechanical ventilation (OR 7.95, 95% CI 1.44-43.83, p < .017) and duration of mechanical ventilation (OR 0.98, 95% CI 0.96-0.99, p < .020). CONCLUSIONS By recognising these prognostic factors, medical professionals can customise their treatment approaches to offer more targeted care, leading to improved patient outcomes and higher survival rates for individuals with COVID-associated candidemia.
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Affiliation(s)
- Selda Aydın
- Department of Infectious Diseases and Clinical Microbiology, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Ali Mert
- Department of Internal Medicine, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Mesut Yılmaz
- Department of Infectious Diseases and Clinical Microbiology, Istanbul Medipol University Medical Faculty, Istanbul, Turkey
| | - Muna Al Maslamani
- Department of Infectious Disease, Hamad Medical Corporation and Communicable Disease Center, Hamad Medical Corporation, Doha, Qatar
| | - Bilal Ahmad Rahimi
- Department of Pediatrics, Kandahar University Faculty of Medicine, Kandahar, Afghanistan
| | - Folusakin Ayoade
- Division of Infectious Diseases, Department of Medicine, University of Miami, Miami, Florida, USA
| | - Amani El-Kholy
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Maya Belitova
- Department of Anesthesiology and Intensive Care, University Hospital Queen Giovanna - ISUL, Medical University of Sofia, Sofia, Bulgaria
| | - Buket Erturk Sengel
- Department of Infectious Disease and Clinical Microbiology, Marmara University Pendik Training and Research Hospital, Istanbul, Turkey
| | - Sabah Jalal
- Department of Internal Medicine, Salmaniya Medical Center, Manama, Bahrain
| | - Ayşe Albayrak
- Department of Infectious Diseases and Clinical Microbiology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | | | - Balint Gergely Szabo
- South Pest Central Hospital, National Institute of Hematology and Infectious Diseases, Budapest, Hungary
- Semmelweis University, Budapest, Hungary
| | - Ramesh Shankar Ganeshan
- Tropical and Infectious Disease Division, Sheikh Shakhbout Medical City, Abu Dhabi, The United Arab Emirates
| | - Emmanuel Nsutebu
- Tropical and Infectious Disease Division, Sheikh Shakhbout Medical City, Abu Dhabi, The United Arab Emirates
| | - Aruna Poojary
- Department of Clinical Microbiologia, Breach Candy Hospital Trust, Mumbai, India
| | - Yasemin Akkoyunlu
- Department of Infectious Diseases and Clinical Microbiology, Medical Faculty, Bezmialem Vakif University, Istanbul, Turkey
| | - Sevil Alkan
- Department of Infectious Diseases and Clinical Microbiology, Onsekiz Mart University School of Medicine, Canakkale, Turkey
| | - Dilşah Başkol Elik
- Department of Infectious Diseases & Clinical Microbiology, Ege School of Medicine, Izmir, Turkey
| | - Gulden Eser-Karlidag
- Department of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Elazig Fethi Sekin City Hospital, Elazig, Turkey
| | - Lurdes Santos
- Infectious Diseases Department, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - Ruxandra Moroti
- National Institute for Infectious Diseases "Prof. Dr. Matei Bals", Bucharest, Romania
| | - Nilgün Altın
- Department of Infectious Diseases, Dıskapı Yıldırım Beyazıt Training and Research Hospital, University of Health Science Turkey, Istanbul, Turkey
| | - Esra Gürbüz
- Department of Infectious Diseases, Van Training and Research Hospital, University of Health Science Turkey, Van, Turkey
| | - Tülay Ünver Ulusoy
- Department of Infectious Diseases, Dıskapı Yıldırım Beyazıt Training and Research Hospital, University of Health Science Turkey, Istanbul, Turkey
| | - Oğuz Reşat Sipahi
- Department of Infectious Diseases & Clinical Microbiology, Ege School of Medicine, Izmir, Turkey
| | - Hülya Çaşkurlu
- Department of Infectious Diseases and Clinical Microbiology, Istanbul Medeniyet University Faculty of Medicine, Istanbul, Turkey
| | - Aliye Esmaoğlu
- Department of Infectious Diseases and Clinical Microbiology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Botond Lakatos
- South Pest Central Hospital, National Institute of Hematology and Infectious Diseases, Budapest, Hungary
| | | | - Andrea Marıno
- Unit of Infectious Diseases, Department of Clinical and Experimental Medicine, ARNAS Garibaldi Hospital, University of Catania, Catania, Italy
| | - Antonio Cascio
- Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties (PROMISE) - Infectious Disease Unit, Policlinico "P. Giaccone", University of Palermo, Palermo, Italy
| | - Alexandru Mihai
- National Institute for Infectious Diseases "Prof. Dr. Matei Bals", Bucharest, Romania
| | - Irina Magdalena Dumitru
- Clinical Infectious Diseases Hospital Constanta, Ovidius University of Constanta, Constanta, Romania
| | | | - Rezaul Karim Ripon
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Mateja Jankovic Makek
- University of Zagreb School of Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
| | | | - Rusmir Baljić
- Unit for Infectious Disease, Clinical Center of the University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Cosmin Dascalu
- National Institute for Infectious Diseases "Prof. Dr. Matei Bals", Bucharest, Romania
| | - Gülden Sincan
- Department of Haematology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Yeşim Uygun Kızmaz
- Department of Infectıous Diseases and Clinical Microbiology, Istanbul Kosuyolu High Specialization Training and Research Hospital, Istanbul, Turkey
| | - Berk Madendere
- Istanbul Medipol University School of Medicine, Istanbul, Turkey
| | - Hakan Erdem
- Department of Infectious Diseases, Bahrain Oncology Centre, King Hamad University Hospital, Al Sayh, Bahrain
- Department of Infectious Diseases & Clinical Microbiology, Gulhane School of Medicine, Turkish Health Sciences University, Ankara, Turkey
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Cornely OA, Ostermann H, Koehler P, Teschner D, Limburg E, Kramer WG, Barbat SH, Tawadrous M, Hodges MR. Phase 1b safety and pharmacokinetics of intravenous and oral fosmanogepix in patients with acute myeloid leukaemia and neutropenia. J Antimicrob Chemother 2023; 78:2645-2652. [PMID: 37681450 PMCID: PMC10631825 DOI: 10.1093/jac/dkad269] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 08/15/2023] [Indexed: 09/09/2023] Open
Abstract
OBJECTIVES Fosmanogepix (APX001), a first-in-class, intravenous (IV) and oral (PO) antifungal prodrug, is being developed to treat invasive fungal diseases (IFDs). Manogepix (APX001A; active moiety) targets fungal glycosylphosphatidylinositol-anchored cell wall transfer protein 1, inhibiting cell wall synthesis causing loss of viability. This open-label, multicentre, Phase 1b study in patients with AML and neutropenia (absolute neutrophil count <500 cells/μL; >10 days) undergoing chemotherapy aimed to assess tolerability, safety and pharmacokinetics (PK) of IV and PO fosmanogepix. METHODS Of 21 adult AML patients undergoing remission induction chemotherapy, 10 received IV fosmanogepix (600 mg; q24h) and 11 received oral fosmanogepix (500 mg; q24h) over 14 days, with a 28 day follow-up. Patients also received remission induction chemotherapy [sequential high-dose cytarabine and mitoxantrone (S-HAM) or 7 + 3 regimen] for AML and IFD prophylaxis (posaconazole). A two-compartmental PK model from previous studies in healthy volunteers was fitted to manogepix plasma data. RESULTS Of 26 fosmanogepix-related adverse events (AEs; IV: 14; PO: 12) in 9 (42.9%) patients [IV: 5 (50%); PO: 4 (36.4%)], none were serious or resulted in fosmanogepix discontinuation. Most frequently occurring fosmanogepix-related AEs were Grade 1/2 nausea [four events in three patients (14.3%)]; vomiting, ALT increase, and delirium [two events; two patients (9.5%) each]. One patient experienced fosmanogepix-related Grade 3 hypertension. Dose-corrected geometric mean ratio of AUC (PO-to-IV) was 95%. Elimination half-lives (∼2 days) were consistent with prior studies in healthy volunteers. CONCLUSIONS Fosmanogepix was safe and well tolerated in AML patients with neutropenia receiving remission induction chemotherapy. Safety and PK profiles were comparable to healthy volunteers.
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Affiliation(s)
- Oliver A Cornely
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- University Hospital of Cologne, Department of Internal Medicine, Medical Faculty, University Hospital of Cologne, Cologne, Germany
| | - Helmut Ostermann
- Department of Hematology/Oncology, Ludwig Maximilian University of Munich, Munich, Germany
| | - Philipp Koehler
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- University Hospital of Cologne, Department of Internal Medicine, Medical Faculty, University Hospital of Cologne, Cologne, Germany
| | - Daniel Teschner
- University Medical Center of the Johannes Gutenberg University Mainz, Department of Hematology, and Medical Oncology, Mainz, Germany
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Endrik Limburg
- Clinical Trials Centre Cologne (CTCC), University of Cologne, Cologne, Germany
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Asadzadeh M, Alfouzan W, Parker JE, Meis JF, Kelly SL, Joseph L, Ahmad S. Molecular Characterization and Sterol Profiles Identify Nonsynonymous Mutations in ERG2 as a Major Mechanism Conferring Reduced Susceptibility to Amphotericin B in Candida kefyr. Microbiol Spectr 2023; 11:e0147423. [PMID: 37358415 PMCID: PMC10434000 DOI: 10.1128/spectrum.01474-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/01/2023] [Indexed: 06/27/2023] Open
Abstract
The molecular basis of reduced susceptibility to amphotericin B (rs-AMB) among any yeasts is poorly defined. Genetic alterations in genes involved in ergosterol biosynthesis and total cell sterols were investigated among clinical Candida kefyr isolates. C. kefyr isolates (n = 81) obtained from 74 patients in Kuwait and identified by phenotypic and molecular methods were analyzed. An Etest was initially used to identify isolates with rs-AMB. Specific mutations in ERG2 and ERG6 involved in ergosterol biosynthesis were detected by PCR sequencing. Twelve selected isolates were also tested by the SensiTitre Yeast One (SYO), and total cell sterols were evaluated by gas chromatography-mass spectrometry and ERG3 and ERG11 sequencing. Eight isolates from 8 patients showed rs-AMB by Etest, including 2 isolates with additional resistance to fluconazole or to all three antifungals. SYO correctly identified 8 of 8 rs-AMB isolates. A nonsynonymous mutation in ERG2 was detected in 6 of 8 rs-AMB isolates but also in 3 of 73 isolates with a wild-type AMB pattern. One rs-AMB isolate contained a deletion (frameshift) mutation in ERG2. One or more nonsynonymous mutations was detected in ERG6 in 11 of 81 isolates with the rs-AMB or wild-type AMB pattern. Among 12 selected isolates, 2 and 2 isolates contained a nonsynonymous mutation(s) in ERG3 and ERG11, respectively. Ergosterol was undetectable in 7 of 8 rs-AMB isolates, and the total cell sterol profiles were consistent with loss of ERG2 function in 6 rs-AMB isolates and loss of ERG3 activity in another rs-AMB isolate. Our data showed that ERG2 is a major target conferring rs-AMB in clinical C. kefyr isolates. IMPORTANCE Some yeast species exhibit intrinsic resistance or rapidly acquire resistance to azole antifungals. Despite >50 years of clinical use, resistance to amphotericin B (AMB) among yeast species has been extremely rarely reported until recently. Reduced susceptibility to AMB (rs-AMB) among yeast species is, therefore, a matter of serious concern due to the availability of only four classes of antifungal drugs. Recent studies in Candida glabrata, Candida lusitaniae, and Candida auris have identified ERG genes involved in ergosterol biosynthesis as the major targets conferring rs-AMB. The results of this study also show that nonsynonymous mutations in ERG2 impair its function, abolish ergosterol from C. kefyr, and confer rs-AMB. Thus, rapid detection of rs-AMB among clinical isolates will help in proper management of invasive C. kefyr infections.
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Affiliation(s)
- Mohammad Asadzadeh
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Wadha Alfouzan
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Josie E. Parker
- Molecular Biosciences Division, School of Biosciences, Cardiff University, Cardiff, United Kingdom
| | - Jacques F. Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands
- Center of Expertise in Mycology, Radboudumc, Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands
- Department of Internal Medicine, Excellence Center for Medical Mycology, Faculty of Medicine, University Hospital Cologne, Cologne, Germany
| | - Steven L. Kelly
- Institute of Life Science, Faculty of Health, Medicine and Life Sciences, Swansea University, Swansea, Wales, United Kingdom
| | - Leena Joseph
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Suhail Ahmad
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
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Biswas B, Sharma AK, Seema K, Kumar A, Boipai M, Kumar M. Emerging threat of candida resistance among neonates at a teaching institute of Jharkhand. J Family Med Prim Care 2023; 12:946-952. [PMID: 37448944 PMCID: PMC10336938 DOI: 10.4103/jfmpc.jfmpc_2104_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/14/2022] [Accepted: 01/16/2023] [Indexed: 07/18/2023] Open
Abstract
Purpose In the past few decades, candidemia has escalated to worrisome levels, leading to substantial morbidity and mortality in neonates. The rise in anti-fungal drug resistance demands prompt diagnosis and treatment. This study aimed to determine the speciation and susceptibility pattern of Candida species recovered from special care new-born units and identify risk factors for developing candidemia in neonates. Method A total of 580 blood samples from clinically suspected septicemic neonates were collected and subjected to culture. Cultures positive for yeasts were sub-cultured on Sabouraud dextrose agar. Identification of a suspected purified colony of Candida was confirmed to the species level by both conventional and automated techniques matrix-assisted laser desorption and ionization time-of-flight mass spectrometry. Anti-fungal susceptibility of isolates was performed by an automated method (VITEK 2 system) using VITEK 2 cards. Multi-variate logistic regression analysis was used to identify risk factors associated with candidemia. Result A total of 56 (9.66%) isolates of Candida species were recovered from 580 blood cultures. Non-albicans Candida species predominated with 82.14% of cases, whereas 17.86% of cases were caused by Candida albicans. Candida tropicalis (46.42%) was the most common isolate recovered, followed by Candida albicans (17.8%). Risk factor analyses identified a very low birth weight [odds ratio (OR) =4.05, 95% confidence interval (CI) =2.03-8.08] and prolonged antibiotic therapy (OR = 3.79, 95% CI = 1.7-8.7) among others as significant predictors of candidemia. All the Candida isolates showed 100% sensitivity to voriconazole and micafungin, whereas the overall sensitivities for fluconazole, amphotericin B, caspofungin, and flucytosine were 85.71%, 96.43%, 96.43%, and 91.07%, respectively. Conclusion Candidemia is a life-threatening condition in neonates. Identification of Candida species and routine anti-fungal susceptibility is a must to select a suitable and effective anti-fungal therapy to revoke emerging resistance to anti-fungals.
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Affiliation(s)
- Binita Biswas
- Junior Resident, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Ashok Kumar Sharma
- Associate Professor, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Kumari Seema
- Assistant Professor, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Abhay Kumar
- Assistant Professor, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Manju Boipai
- Assistant Professor, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Manoj Kumar
- Professor, Department of Microbiology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
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Hamed K, Engelhardt M, Kovanda LL, Huang JJ, Yan J, Aram JA. Post-hoc analysis of the safety and efficacy of isavuconazole in older patients with invasive fungal disease from the VITAL and SECURE studies. Sci Rep 2023; 13:6730. [PMID: 37185921 PMCID: PMC10127179 DOI: 10.1038/s41598-023-31788-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 03/17/2023] [Indexed: 05/17/2023] Open
Abstract
Isavuconazole is a triazole with broad-spectrum antifungal activity. In this post-hoc analysis of two prospective clinical trials (VITAL and SECURE), the safety and efficacy of isavuconazole in patients aged ≥ 65 years with invasive fungal diseases were evaluated. Patients were divided into two subgroups (≥ 65 and < 65 years). Adverse events (AEs); all-cause mortality; and overall, clinical, mycological, and radiological response were assessed. A total of 155 patients ≥ 65 years were enrolled in both trials. Most patients reported AEs. In the isavuconazole arm of both studies, serious AEs (SAEs) were greater in patients ≥ 65 versus < 65 years: 76.7% versus 56.9% (VITAL); 61.9% versus 49.0% (SECURE). In SECURE, SAE rates were similar in the ≥ 65 years subgroup of both treatment arms (61.9% vs 58.1%), while in the < 65 years subgroup the SAE rate was lower in the isavuconazole arm (49.0% vs 57.4%). In VITAL, all-cause mortality through day 42 (30.0% vs 13.8%) was higher, and overall response at end of treatment (27.6% vs 46.8%) was lower in patients ≥ 65 years versus < 65 years. In SECURE, all-cause mortality was similar between both subgroups, and isavuconazole (20.6% vs 17.9%) and voriconazole (22.6% vs 19.4%) treatment arms. The overall response was lower in the ≥ 65 years than the < 65 years subgroup in the isavuconazole (23.7% vs 39.0%) and voriconazole (32.0% vs 37.5%) arms. The safety and efficacy of isavuconazole were better in patients < 65 versus ≥ 65 years, and the safety profile was more favorable than that of voriconazole in both subgroups.Clinicaltrials.gov identifier NCT00634049 and NCT00412893.
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Affiliation(s)
- Kamal Hamed
- Basilea Pharmaceutica International Ltd., Allschwil, Switzerland
| | - Marc Engelhardt
- Basilea Pharmaceutica International Ltd., Allschwil, Switzerland.
| | - Laura L Kovanda
- Astellas Pharma Global Development, Inc., Northbrook, IL, USA
| | - Jin Ju Huang
- Pfizer, 10645848 PBG China Medical, Beijing, China
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Wang B, Zhang Z, Liu W, Tan B. Targeting regulatory T cells in gastric cancer: Pathogenesis, immunotherapy, and prognosis. Biomed Pharmacother 2023; 158:114180. [PMID: 36586241 DOI: 10.1016/j.biopha.2022.114180] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/16/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Gastric cancer (GC) remains one of the most common malignancies worldwide. Despite immune-checkpoint inhibitors (ICIs) has revolutionized cancer treatment and obtained durable clinical responses, only a fraction of GC patients benefit from it. As an important component of T cells, regulatory T cells (Tregs) play a vital role in the pathogenesis of GC, keep a core balance between immune suppression and autoimmunity, and function as predictive biomarkers for prognosis of GC patients. In this review, we discuss the role of Tregs in the pathogenesis of GC, and targeting Tregs via influencing their transcription factor, migration, co-stimulatory receptors, immune checkpoints, and cytokines. We also focus on the currently important findings of Tregs metabolism including amino acid, fatty acid, and lactic acid metabolism of GC. The emerging role of microbiome and clinical combined therapy in modulating Tregs in GC treatment is also summarized. Meanwhile, this review recapitulates a novel regulator, magnesium, is involved in mediating Tregs in GC. These research advances on Treg-related strategies provide new insights and challenges for GC progression, treatment, and prognosis. And we hope our review can stimulate further discovery and implication of mediators and pathways targeting Tregs.
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Affiliation(s)
- Bingyu Wang
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, 050011 Shijiazhuang, China
| | - Zaibo Zhang
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, 050011 Shijiazhuang, China
| | - Wenbo Liu
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, 050011 Shijiazhuang, China
| | - Bibo Tan
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, 050011 Shijiazhuang, China.
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Ahmad S, Asadzadeh M. Strategies to Prevent Transmission of Candida auris in Healthcare Settings. CURRENT FUNGAL INFECTION REPORTS 2023; 17:36-48. [PMID: 36718372 PMCID: PMC9878498 DOI: 10.1007/s12281-023-00451-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2022] [Indexed: 01/27/2023]
Abstract
Purpose of Review Candida auris, a recently recognized yeast pathogen, has become a major public health threat due to the problems associated with its accurate identification, intrinsic and acquired resistance to antifungal drugs, and its potential to easily contaminate the environment causing clonal outbreaks in healthcare facilities. These outbreaks are associated with high mortality rates particularly among older patients with multiple comorbidities under intensive care settings. The purpose of this review is to highlight strategies that are being adapted to prevent transmission of C. auris in healthcare settings. Recent Findings Colonized patients shed C. auris into their environment which contaminates surrounding equipment. It resists elimination even by robust decontamination procedures and is easily transmitted to new patients during close contact resulting in outbreaks. Efforts are being made to rapidly identify C. auris-infected/C. auris-colonized patients, to determine its susceptibility to antifungals, and to perform effective cleaning and decontamination of the environment and isolation of colonized patients to prevent further transmission. Summary Rapid and accurate identification of hospitalized patients infected/colonized with C. auris, rapid detection of its susceptibility patterns, and appropriate use of infection control measures can help to contain the spread of this highly pathogenic yeast in healthcare settings and prevent/control outbreaks.
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Affiliation(s)
- Suhail Ahmad
- Faculty of Medicine, Department of Microbiology, Kuwait University, PO Box: 24923, 13110 Safat, Kuwait
| | - Mohammad Asadzadeh
- Faculty of Medicine, Department of Microbiology, Kuwait University, PO Box: 24923, 13110 Safat, Kuwait
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How Are Older Adults Different Than Other Adults for Infections? INFECTIOUS DISEASES IN CLINICAL PRACTICE 2023. [DOI: 10.1097/ipc.0000000000001197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Rayens E, Rayens MK, Norris KA. Demographic and Socioeconomic Factors Associated with Fungal Infection Risk, United States, 2019. Emerg Infect Dis 2022; 28. [PMID: 36149028 PMCID: PMC9514344 DOI: 10.3201/eid2810.220391] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Diagnosis disproportionately affected minority and low-income populations, underscoring the need for broad public health interventions. Fungal infections cause substantial rates of illness and death. Interest in the association between demographic factors and fungal infections is increasing. We analyzed 2019 US hospital discharge data to assess factors associated with fungal infection diagnosis, including race and ethnicity and socioeconomic status. We found male patients were 1.5–3.5 times more likely to have invasive fungal infections diagnosed than were female patients. Compared with hospitalizations of non-Hispanic White patients, Black, Hispanic, and Native American patients had 1.4–5.9 times the rates of cryptococcosis, pneumocystosis, and coccidioidomycosis. Hospitalizations associated with lower-income areas had increased rates of all fungal infections, except aspergillosis. Compared with younger patients, fungal infection diagnosis rates, particularly for candidiasis, were elevated among persons >65 years of age. Our findings suggest that differences in fungal infection diagnostic rates are associated with demographic and socioeconomic factors and highlight an ongoing need for increased physician evaluation of risk for fungal infections.
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Elderly versus nonelderly patients with invasive fungal infections: species distribution and antifungal resistance, SENTRY antifungal surveillance program 2017-2019. Diagn Microbiol Infect Dis 2022; 102:115627. [DOI: 10.1016/j.diagmicrobio.2021.115627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/14/2021] [Accepted: 12/18/2021] [Indexed: 11/21/2022]
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Evans BA, Bernstein DA. CRISPR-Mediated Genome Editing in the Human Fungal Pathogen C. albicans. Methods Mol Biol 2022; 2542:3-12. [PMID: 36008653 DOI: 10.1007/978-1-0716-2549-1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Cas9-mediated genome editing is one tool investigators can use to study fungal pathogens. Such methodologies allow the investigator to examine how fungal cells differ from human cells and thus potentially identify novel therapeutic targets. In this chapter, we describe how CRISPR-mediated genome editing can be used to edit the genome of the most prevalent human fungal pathogen C. albicans. A cassette encoding a fungal optimized Cas9 nuclease and guide RNA is integrated into the C. albicans genome. The guide RNA targets Cas9 to the complementary genome sequence, and Cas9 cleaves the DNA. A repair template encoding whatever changes the investigator wished to make to the genome is co-transformed with the cassette and repairs the break via homologous recombination, thus introducing the change to the genome. The method we describe enables the researcher to edit the C. albicans genome and then efficiently remove the editing machinery and antibiotic resistance markers. This allows one to sequentially edit the C. albicans genome when multiple changes are desired. In addition, we provide notes that provide guidance on how the described protocols can be altered to meet the demands of the researcher. In these notes, we also describe the recent development of a more flexible CRISPR system that has a relaxed PAM site specificity. These and other advancements make CRISPR-mediated genome editing a practical approach when one needs to genetically alter C. albicans.
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Affiliation(s)
- Ben A Evans
- Department of Biology, Ball State University, Muncie, IN, USA
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Yang A, Hu Y, Chen P, Zheng G, Hu X, Zhang J, Wang J, Wang C, Huang Z, Zhang Y, Guo Y. Diagnosis by metagenomic next-generation sequencing of a Talaromyces marneffei bloodstream infection in an HIV-negative child: A case report. Front Pediatr 2022; 10:903617. [PMID: 36046481 PMCID: PMC9421359 DOI: 10.3389/fped.2022.903617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Talaromyces marneffei (TM) bloodstream infections are life- threatening in immunocompromised individuals. The lack of specific clinical features for these infections and poor sensitivity associated with routine examination procedures make diagnosis challenging. Untimely diagnosis and delayed antifungal treatment threatens the life of such patients. CASE DESCRIPTION We report a case of a TM bloodstream infection, confirmed by the results of blood culture, of a child who was HIV negative and possessed a CD40LG gene mutation. A diagnosis of TM was established by blood metagenomic next-generation sequencing (mNGS) of the patient's blood, which was confirmed by microbiological culture of blood. On admission, this previously healthy male patient was 8-months of age, who presented with recurrent fever and a cough of 6-days in duration. His condition did not improve after antibacterial treatment for 5-days, with significant and recurrent fever and worsening spirit. He was referred to the Department of Pediatrics in our tertiary medical institution with a white blood cell count of 21.5*10∧9/L, C-reactive protein of 47.98 mg/L, and procalcitonin of 0.28 ng/mL. A bloodstream infection was not excluded and blood was collected for microbial culture. The patient received a 1-day treatment of cefoperazone sulbactam and 6-days of imipenem cilastatin. Symptoms did not improve and fever persisted. Blood was submitted for mNGS analysis and within 14-h, 14,352 TM reads were detected with a relative abundance of 98.09%. Antibiotic treatment was immediately changed to intravenous amphotericin B combined with oral itraconazole. The condition of the child gradually improved. Blood culture showed TM on the 7th day after hospitalization, confirming bloodstream infection. After the 13th day of hospital admission, the patient's body temperature dropped close to 38°C and was discharged on the 30th day of hospitalization. Oral itraconazole was prescribed with follow up at the outpatient clinic. CONCLUSIONS HIV-negative patients with CD40LG mutations may be potential hosts for TM. TM infections are rare in children and their detection by conventional microbial culture methods are inadequate for an early diagnosis. mNGS is a rapid detection method that permits early diagnosis of uncommon infectious agents, such as TM, allowing for improved patient outcomes.
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Affiliation(s)
- Aimei Yang
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yan Hu
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Peiling Chen
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guilang Zheng
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xuejiao Hu
- Department of Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jingwen Zhang
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jing Wang
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chun Wang
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zijian Huang
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yuxin Zhang
- Department of Pediatrics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yuxiong Guo
- Department of Pediatric Intensive Care Unit, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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Asadzadeh M, Mokaddas E, Ahmad S, Abdullah AA, de Groot T, Meis JF, Shetty SA. Molecular characterisation of Candida auris isolates from immunocompromised patients in a tertiary-care hospital in Kuwait reveals a novel mutation in FKS1 conferring reduced susceptibility to echinocandins. Mycoses 2021; 65:331-343. [PMID: 34953089 DOI: 10.1111/myc.13419] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/17/2021] [Indexed: 01/05/2023]
Abstract
BACKGROUND Candida auris is an emerging, potentially multidrug-resistant pathogen that exhibits clade-specific resistance to fluconazole and also develops resistance to echinocandins and amphotericin B easily. This study analysed 49 C auris isolates for alterations in hotspot-1 and hotspot-2 of FKS1 for the detection of mutations conferring reduced susceptibility to echinocandins. METHODS C auris isolates (n = 49) obtained from 18 immunocompromised patients during June 2016-December 2018 were analysed. Antifungal susceptibility testing was performed by Etest and broth microdilution-based MICRONAUT-AM assay. Mutations in hotspot-1 and hotspot-2 regions of FKS1 were detected by PCR sequencing and fingerprinting of the isolates was done by short tandem repeat typing. RESULTS The patients had multiple comorbidities/risk factors for Candida spp. infection including cancer/leukaemia/lymphoma/myeloma (n = 16), arterial/central line (n = 17), urinary catheter (n = 17), mechanical ventilation (n = 14) and major surgery (n = 9) and received antifungal drugs as prophylaxis and/or empiric treatment. Seven patients developed C auris candidemia/breakthrough candidemia, nine patients had candiduria with/without candidemia and four patients developed surgical site/respiratory infection. Resistance to fluconazole and amphotericin B was detected in 44 and four isolates, respectively. Twelve C auris isolates from eight patients showed reduced susceptibility to echinocandins. Seven isolates contained hostspot-1 mutations and three isolates from a candidemia patient contained R1354H mutation in hotspot-2 of FKS1. Ten patients died, five were cured, two were lost to follow-up and treatment details for one patient were not available. CONCLUSIONS Our findings describe development of a novel mutation in FKS1 conferring reduced susceptibility to echinocandins in one patient during treatment and unfavourable clinical outcome for many C auris-infected patients.
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Affiliation(s)
- Mohammad Asadzadeh
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Eiman Mokaddas
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait.,Microbiology Department, Ibn Sina Hospital, Shuwaikh, Kuwait
| | - Suhail Ahmad
- Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | | | - Theun de Groot
- Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands.,Center of Expertise in Mycology, Radboud University Medical Center/Canisius Wilhelmina Hospital, Nijmegen, The Netherlands.,Bioprocess Engineering and Biotechnology Graduate Program, Federal University of Paraná, Curitiba, Brazil
| | - Shama A Shetty
- Microbiology Department, Ibn Sina Hospital, Shuwaikh, Kuwait
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Candida Spp. in Lower Respiratory Tract Secretions - A Ten Years Retrospective Study. J Crit Care Med (Targu Mures) 2021; 7:217-226. [PMID: 34722925 PMCID: PMC8519383 DOI: 10.2478/jccm-2021-0016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/24/2021] [Indexed: 12/27/2022] Open
Abstract
Introduction Lower respiratory tract secretions (LRTS) like sputum and tracheal aspirates are frequently sent to the microbiology laboratory from patients with various respiratory pathologies. Improper collection techniques can lead to false-positive results, resulting in improper therapy. Aim of the study To determine the percentage of contaminated samples sent to the microbiology laboratory, to establish the prevalence of Candida spp. in non-contaminated samples and therefore, the presence of Candida spp. originating in lower respiratory tract infections. Material and Methods A 10-year data survey was conducted to assess the differences in Candida prevalence from contaminated versus non-contaminated samples, assessed and categorised by Bartlett grading system, and to emphasise the importance of quality control for potentially contaminated samples. The data were analysed according to gender, age, referring departments, and the species of Candida. For the statistical analysis, Kruskal-Wallis and Fisher tests were used, and the alpha value was set for 0.5. Results The prevalence of Candida spp. in all analysed samples was 31.60%. After excluding the contaminated samples, the actual prevalence was 27.66%. Of all sputum samples, 31.6% were contaminated. Patients aged more than 40 years old were more prone to provide contaminated sputum samples. C. albicans is more prevalent in non-contaminated sputum samples. In both sputum and tracheal aspirates, the chances of identifying a single species are higher than the chances of identifying multiple species. Conclusions The study emphasises the importance of assessing the quality of sputum samples because of the high number of improperly collected samples sent to the microbiology laboratory.
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Nakada-Motokawa N, Miyazaki T, Ueda T, Yamagishi Y, Yamada K, Kawamura H, Kakeya H, Mukae H, Mikamo H, Takesue Y, Kohno S. Modified Pitt bacteremia score for predicting mortality in patients with candidaemia: A multicentre seven-year retrospective study conducted in Japan. Mycoses 2021; 64:1498-1507. [PMID: 34655487 PMCID: PMC9297953 DOI: 10.1111/myc.13380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/11/2021] [Accepted: 10/11/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Several severity indexes have been reported for critically ill patients. The Pitt bacteremia score (PBS) is commonly used to predict the risk of mortality in patients with bacteraemia. OBJECTIVES To develop a scoring system for predicting mortality in candidaemia patients. METHODS Medical records at five Japanese tertiary hospitals were reviewed. Factors associated with mortality were analysed using logistic regression modelling. The discriminatory power of scoring models was evaluated by assessing the area under the receiver operating characteristic curve (AUC), net reclassification improvement (NRI) and integrated discrimination improvement (IDI). RESULTS In total, 422 candidaemia patients were included. Higher PBS, dialysis and retainment of central venous catheter were independent risk factors for all-cause 30-day mortality. However, among the five PBS components, fever was not associated with mortality; therefore, we developed a modified version of the PBS (mPBS) by replacing fever with dialysis. AUC for PBS and mPBS were 0.74 (95% confidence interval [CI]: 0.68-0.80) and 0.76 (95% CI: 0.71-0.82), respectively. The increase in predictive ability of mPBS for 30-day mortality was statistically significant as assessed by NRI (0.24, 95% CI: 0.01-0.46, p = .04) and IRI (0.04, 95% CI: 0.02-0.06, p = .0008). When patients were stratified by mPBS into low (scores 0-3), moderate (4-7) and high risk (≥8), there were significant differences among the survival curves (p < .0001, log-rank test), and 30-day mortality rates were 13.8% (40/290), 36.8% (28/76) and 69.4% (34/49), respectively. CONCLUSIONS mPBS can be a useful tool for predicting mortality in candidaemia patients.
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Affiliation(s)
| | - Taiga Miyazaki
- Department of Respiratory Medicine, Nagasaki University, Nagasaki, Japan.,Division of Respirology, Rheumatology, Infectious Diseases, and Neurology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Takashi Ueda
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Japan
| | - Yuka Yamagishi
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Koichi Yamada
- Department of Infection Control Science, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Hideki Kawamura
- Division of Medical and Environmental Safety, Department of Infection Control and Prevention, Kagoshima University Hospital, Kagoshima, Japan
| | - Hiroshi Kakeya
- Department of Infection Control Science, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University, Nagasaki, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University, Nagakute, Japan
| | - Yoshio Takesue
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Japan
| | - Shigeru Kohno
- Department of Respiratory Medicine, Nagasaki University, Nagasaki, Japan
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Battistolo J, Glampedakis E, Damonti L, Poissy J, Grandbastien B, Kalbermatter L, Pagani JL, Eggimann P, Bochud PY, Calandra T, Marchetti O, Lamoth F. Increasing morbidity and mortality of candidemia over one decade in a Swiss university hospital. Mycoses 2021; 64:1512-1520. [PMID: 34587318 PMCID: PMC9298218 DOI: 10.1111/myc.13376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/02/2021] [Accepted: 09/27/2021] [Indexed: 01/07/2023]
Abstract
Background The epidemiology of candidemia is evolving with raising concern about the emergence of intrinsically resistant non‐albicans Candida species and acquisition of antifungal resistance. In addition to microbiological surveys, epidemiological studies including clinical data are needed to assess the impact of candidemia on morbidity and mortality. Objectives To assess the clinical and microbiological trends of candidemia in a Swiss university hospital. Patients/Methods. This single‐centre retrospective study compared the incidence of candidemia, Candida species distribution, antifungal resistance profiles, clinical characteristics and outcomes between two periods separated by one decade. Results A total of 170 candidemic episodes were included (68 from period 1, 2004‐2006, and 102 from period 2, 2014‐2017). Incidence of candidemia (0.85 to 0.97 episode/10,000 patient‐days), species distribution (55%–57% C albicans) and antifungal susceptibilities remained unchanged. During period 2, candidemia was more frequently observed in intensive care units (ICU, 38% vs 19% in period 1, P = .01) and amongst older patients (median age 68 vs 59 years old, P < .01) with more immunosuppressive conditions (24% vs 9%, P = .01). Candidemia in period 2 was more frequently followed by septic shock (23% vs 7% in period 1, P = .01) and ICU admission (42% vs 12%, P < .01) and was associated with higher mortality (34% vs 18%, P = .03). Overall, factors associated with mortality in multivariate analyses included cirrhosis, solid malignancies and ICU stay at the time of candidemia. Conclusions Despite stable incidence, species distribution and antifungal resistance of candidemia, an epidemiological shift of the disease towards older and more critically ill patients was observed, with higher mortality rates.
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Affiliation(s)
- Julien Battistolo
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Emmanouil Glampedakis
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Hospital Preventive Medicine Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Lauro Damonti
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland
| | - Julien Poissy
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,UMR 8576 - UGSF and Unit of Structural and Functional Glycobiology, University of Lille, Inserm U1285, CHU Lille, Pôle de médecine intensive-réanimation, CNRS, Lille, France
| | - Bruno Grandbastien
- Hospital Preventive Medicine Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Laetitia Kalbermatter
- Hospital Preventive Medicine Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jean-Luc Pagani
- Adult Intensive Care Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Philippe Eggimann
- Department of Orthopedics and Traumatology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Pierre-Yves Bochud
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Thierry Calandra
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Oscar Marchetti
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Department of Medicine, Ensemble Hospitalier de la Côte, Morges, Switzerland
| | - Frederic Lamoth
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Institute of Microbiology, Department of Laboratories, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Lee YC, Chen YC, Wang JT, Wang FD, Hsieh MH, Hii IM, Lee YL, Ho MW, Liu CE, Chen YH, Liu WL. Impact of Nutritional Assessment on the Clinical Outcomes of Patients with Non- albicans Candidemia: A Multicenter Study. Nutrients 2021; 13:3218. [PMID: 34579094 PMCID: PMC8465954 DOI: 10.3390/nu13093218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 01/04/2023] Open
Abstract
Several studies have demonstrated that malnutrition is a negative prognostic factor for clinical outcomes. However, there is limited evidence for the effect of malnutrition on clinical outcomes in patients with candidemia. We investigated the relationship between malnutrition and all-cause 28-day mortality among patients with non-albicans candidemia. Between July 2011 and June 2014, all adult patients with non-albicans candidemia, including C. tropicalis, C. glabrata, C. parapsilosis and so on, were enrolled. The Malnutrition Universal Screening Tool (MUST) scores were used to determine the patients' nutritional status before the onset of candidemia. A total of 378 patients were enrolled; 43.4% developed septic shock and 57.1% had a high risk of malnutrition (MUST ≥ 2). The all-cause 28-day mortality rate was 40.7%. The Cox proportional hazards model revealed that C. tropicalis (HR, 2.01; 95% CI, 1.24-3.26; p = 0.005), Charlson comorbidity index (HR, 1.10; 95% CI, 1.03-1.18; p = 0.007), Foley catheter use (HR, 1.68; 95% CI, 1.21-1.35; p = 0.002), concomitant bacterial infections (HR, 1.55; 95% CI, 1.11-2.17; p = 0.010), low platelet count (HR, 3.81; 95% CI, 2.45-5.91; p < 0.001), not receiving antifungals initially (HR, 4.73; 95% CI, 3.07-7.29; p < 0.001), and MUST ≥ 2 (HR, 1.54; 95% CI, 1.09-2.17; p = 0.014) were independently associated with all-cause 28-day mortality. A simple screening tool for nutritional assessment should be used for patients with non-albicans candidemia to detect early clinical deterioration, and a tailored nutritional care plan should be established for malnourished individuals, to improve their clinical outcomes.
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Affiliation(s)
- Yi-Chien Lee
- Department of Internal Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei City 243, Taiwan;
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan;
| | - Yong-Chen Chen
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan;
- Master Program of Big Data in Biomedicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Jann-Tay Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan;
- Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tsu-Nan County 350, Taiwan
| | - Fu-Der Wang
- Division of Infectious Diseases, Department of Internal Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan;
- School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
| | - Min-Han Hsieh
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (M.-H.H.); (Y.-H.C.)
| | - Ing-Moi Hii
- Division of Infectious Diseases, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (I.-M.H.); (Y.-L.L.); (C.-E.L.)
| | - Yu-Lin Lee
- Division of Infectious Diseases, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (I.-M.H.); (Y.-L.L.); (C.-E.L.)
| | - Mao-Wang Ho
- Division of Infectious Diseases, Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan;
| | - Chun-Eng Liu
- Division of Infectious Diseases, Department of Internal Medicine, Changhua Christian Hospital, Changhua 500, Taiwan; (I.-M.H.); (Y.-L.L.); (C.-E.L.)
| | - Yen-Hsu Chen
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (M.-H.H.); (Y.-H.C.)
| | - Wei-Lun Liu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan;
- Division of Critical Care Medicine, Department of Emergency & Critical Care Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei City 243, Taiwan
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Epidemiology of Candidemia in Kuwait: A Nationwide, Population-Based Study. J Fungi (Basel) 2021; 7:jof7080673. [PMID: 34436212 PMCID: PMC8399751 DOI: 10.3390/jof7080673] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 02/07/2023] Open
Abstract
The Candida species cause a majority of invasive fungal infections. In this article, we describe the nationwide epidemiology of candidemia in Kuwait in 2018. Yeast bloodstream isolates submitted from all major hospitals and identified by phenotypic MALDI-TOF MS and/or by molecular methods were studied. Susceptibility testing was performed by Etest. Out of 313 bloodstream yeasts, 239 Candida spp. isolates (excluding duplicate isolates) were obtained during 234 candidemic episodes among 223 patients. Mixed-species candidemia and re-infection occurred in 5 and 11 patients, respectively. C. albicans (n = 74), C. parapsilosis (n = 54), C. tropicalis (n = 35), C. auris (n = 33), C. glabrata (n = 32), other Candida spp. (n = 11), and other yeasts (n = 9) caused fungemia. Nearly 50% of patients were in intensive care units. Candida spp. isolates (except C. glabrata) were susceptible to caspofungin and 27% of C. auris were amphotericin B-resistant. Resistance to fluconazole was 100% in C. auris, 17% in C. parapsilosis, 12% in C. glabrata, and 1% in C. albicans. Mortality was 47% for other Candida/yeast infections. Nationwide candidemia incidence in 2018 was 5.29 cases/100,000 inhabitants. Changes in species spectrum, increasing fluconazole resistance in C. parapsilosis, and the emergence of C. auris as a major pathogen in Kuwait are noteworthy findings. The data could be of help in informing decisions regarding planning, in the allocation of resources, and in antimicrobial stewardship.
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Kato H, Hagihara M, Shibata Y, Asai N, Yamagishi Y, Iwamoto T, Mikamo H. Comparison of mortality between echinocandins and polyenes for an initial treatment of candidemia: A systematic review and meta-analysis. J Infect Chemother 2021; 27:1562-1570. [PMID: 34217605 DOI: 10.1016/j.jiac.2021.06.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Current guidelines recommend echinocandins for the initial treatment of candidemia. However, polyenes are often chosen in clinical settings because of their fungicidal and anti-biofilm effects. Therefore, we performed a systematic review and meta-analysis to evaluate whether echinocandins are superior to polyenes in terms of mortality for the initial treatment of candidemia. METHODS We systematically searched the Scopus, EMBASE, Cochrane Central Register of Controlled Trials, PubMed, and CINAHL databases until July 1, 2020. We compared the mortality rates of patients who received echinocandins and polyenes. As a subgroup analysis, we compared the mortality rates following the use of echinocandins versus liposomal amphotericin B. RESULTS Fifteen studies involving 854 patients were included. Various Candida species were detected, and the rates of resistance of echinocandins and polyenes against the overall detected isolates were 1.0% and 0%, respectively. The overall mortality recorded in 15 studies was 41.0%, and the mortality was significantly higher for polyenes than echinocandins (odd ratios [OR] 1.68, 95% confidential interval [CI] 1.17-2.42). Furthermore, liposomal amphotericin B showed higher mortality in the initial treatment than echinocandins (OR 1.42; 95% CI 0.84-2.39). CONCLUSIONS We revealed an association between echinocandin treatment and reduced mortality in the initial treatment of candidemia when causative fungi were not considered. Our findings partially support current guidelines recommending echinocandins for the treatment of candidemia.
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Affiliation(s)
- Hideo Kato
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan; Department of Pharmacy, Mie University Hospital, Mie, Japan
| | - Mao Hagihara
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan; Department of Molecular Epidemiology and Biomedical Sciences, Aichi Medical University Hospital, Aichi, Japan
| | - Yuichi Shibata
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Yuka Yamagishi
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan
| | - Takuya Iwamoto
- Department of Pharmacy, Mie University Hospital, Mie, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University, Aichi, Japan.
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20
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Deng W, Su Z, Liang P, Ma Y, Liu Y, Zhang K, Zhang Y, Liang T, Shao J, Liu X, Han W, Li R. Single-cell immune checkpoint landscape of PBMCs stimulated with Candida albicans. Emerg Microbes Infect 2021; 10:1272-1283. [PMID: 34120578 PMCID: PMC8238073 DOI: 10.1080/22221751.2021.1942228] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Immune checkpoints play various important roles in tumour immunity, which usually contribute to T cells’ exhaustion, leading to immunosuppression in the tumour microenvironment. However, the roles of immune checkpoints in infectious diseases, especially fungal infection, remain elusive. Here, we reanalyzed a recent published single-cell RNA-sequencing (scRNA-seq) data of peripheral blood mononuclear cells (PBMCs) stimulated with Candida albicans (C. albicans), to explore the expression patterns of immune checkpoints after C. albicans bloodstream infection. We characterized the heterogeneous pathway activities among different immune cell subpopulations after C. albicans infection. The CTLA-4 pathway was up-regulated in stimulated CD4+ and CD8+ T cells, while the PD-1 pathway showed high activity in stimulated plasmacytoid dendritic cell (pDC) and monocytes. Importantly, we found that immunosuppressive checkpoints HAVCR2 and LAG3 were only expressed in stimulated NK and CD8+ T cells, respectively. Their viabilities were validated by flow cytometry. We also identified three overexpressed genes (ISG20, LY6E, ISG15) across all stimulated cells. Also, two monocyte-specific overexpressed genes (SNX10, IDO1) were screened out in this study. Together, these results supplemented the landscape of immune checkpoints in fungal infection, which may serve as potential therapeutic targets for C. albicans infection. Moreover, the genes with the most relevant for C. albicans infection were identified in this study.
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Affiliation(s)
- Weiwei Deng
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Zhen Su
- Department of Dermatology and Venerology, The Third Affiliated Hospital of Sun Yat-Sen university, Guangzhou, People's Republic of China
| | - Panpan Liang
- Clinical laboratory, The Third Affiliated Hospital of Sun Yat-Sen university, Guangzhou, People's Republic of China
| | - Yubo Ma
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Yufang Liu
- Department of Dermatology and Venerology, The Third Affiliated Hospital of Sun Yat-Sen university, Guangzhou, People's Republic of China
| | - Kai Zhang
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Yi Zhang
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Tianyu Liang
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Jin Shao
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Xiao Liu
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
| | - Wenling Han
- Department of Immunology, School of Basic Medical Sciences, Peking University Health Science Center, Peking University Center for Human Disease Genomics, Key Laboratory of Medical Immunology, Ministry of Health, Beijing, People's Republic of China
| | - Ruoyu Li
- Department of Dermatology and Venerology, Peking University First Hospital, Peking University; National Clinical Research Center for Skin and Immune Diseases; Beijing Key Laboratory of Molecular Diagnosis of Dermatoses, Beijing, People's Republic of China
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21
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Cortés JA, Montañez AM, Carreño-Gutiérrez AM, Reyes P, Gómez CH, Pescador A, Ariza B, Rosso F. Risk Factors for Mortality in Colombian Patients with Candidemia. J Fungi (Basel) 2021; 7:jof7060442. [PMID: 34073125 PMCID: PMC8229794 DOI: 10.3390/jof7060442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/30/2022] Open
Abstract
The aim of the study was to describe the microbiology and susceptibility profile of candidemia and to identify the risk factors associated with mortality in Colombia. A cohort of patients was followed for 30 days during 2008 to 2010. Microbiological identification and susceptibility assessments were performed in a reference centre. Demographic, clinical and treatment variables were evaluated for their associations with mortality. A parametric survival regression analysis was used to identify the risk factors associated with mortality. A total of 109 patients with candidemia in four hospitals in Colombia were identified, with a median age of 30 years old. C. parapsilosis was the most frequently identified microorganism (38.5%); the susceptibility of all isolates was high to fluconazole and anidulafungin, except for C. glabrata isolates. The overall mortality was 35.7%, and the risk factors associated with mortality included lack of antifungal treatment (HR 5.5, 95% CI 3.6–11.4), cancer (HR 3.9, 95% CI 2.3–8.0), diabetes (HR 2.5, 95% CI 1.03–6.4), and age (HR 1.13 per every 10 years, 95% CI 1.02–1.24). Catheter removal was associated with a low mortality rate (HR 0.06, 95% CI 0.00–0.49). Prompt antifungal treatment, better glycemic control and catheter removal should be prioritized in the management of candidemia.
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Affiliation(s)
- Jorge Alberto Cortés
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
- Correspondence: ; Tel.: +57-315-3514013
| | - Anita María Montañez
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
| | - Ana María Carreño-Gutiérrez
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
| | - Patricia Reyes
- Department of Infectious Diseases, Clínica Universitaria Colombia, Bogotá 111321, Colombia;
| | | | - Angela Pescador
- Hospital Militar Central, Bogotá 111321, Colombia; (C.H.G.); (A.P.)
| | - Beatriz Ariza
- Hospital Universitario San Ignacio, Bogotá 111321, Colombia;
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22
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Epidemiology and Prevention of Healthcare-Associated Infections in Geriatric Patients: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18105333. [PMID: 34067797 PMCID: PMC8156303 DOI: 10.3390/ijerph18105333] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 12/16/2022]
Abstract
Demographic studies show that life expectancy is increasing in developed countries; increased longevity has also increased the share of the older population with often concomitant chronic conditions. An ageing population and increased comorbidities lead to more complex pharmacological therapies (polypharmacy). The particular picture provided by chronic conditions and polypharmacy can lead to longer hospital stays and a greater need for healthcare. Elderly patients are identified as being in the high-risk group for the development of healthcare-associated infections (HAIs) due to the age-related decline of the immune system, known as immunosenescence. Comorbid conditions can often complicate infections, diminishing our ability to treat them effectively. Respiratory tract infections are the most common healthcare-associated infections, followed by urinary tract infections. HAIs in geriatric patients are responsible for longer hospital stays, extended antibiotic therapy, significant mortality, and higher healthcare costs. This is because the microorganisms involved are multidrug-resistant and, therefore, more difficult to eliminate. Moreover, geriatric patients are frequently transferred from one facility (nursing homes, skilled nursing facilities, home care, and other specialty clinics) to another or from one hospital ward to another; these transitions cause care fragmentation, which can undermine the effectiveness of treatment and allow pathogens to be transferred from one setting to another and from one person to another. Multifactorial efforts such as early recognition of infections, restricted use of invasive devices, and effective infection control measures (surveillance, isolation practices, hand hygiene, etc.) can contribute to significant reduction of HAIs in geriatric patients.
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23
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Bhaskaran N, Jayaraman S, Quigley C, Mamileti P, Ghannoum M, Weinberg A, Thuener J, Pan Q, Pandiyan P. The Role of Dectin-1 Signaling in Altering Tumor Immune Microenvironment in the Context of Aging. Front Oncol 2021; 11:669066. [PMID: 33968777 PMCID: PMC8100664 DOI: 10.3389/fonc.2021.669066] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/06/2021] [Indexed: 01/10/2023] Open
Abstract
An increased accumulation of immune-dysfunction-associated CD4+Foxp3+ regulatory T cells (Tregs) is observed in aging oral mucosa during infection. Here we studied the function of Tregs during oral cancer development in aging mucosa. First, we found heightened proportions of Tregs and myeloid-derived suppressor cells (MDSC) accumulating in mouse and human oral squamous cell carcinoma (OSCC) tissues. Using the mouse 4-Nitroquinoline 1-oxide(4-NQO) oral carcinogenesis model, we found that tongues of aged mice displayed increased propensity for epithelial cell dysplasia, hyperplasia, and accelerated OSCC development, which coincided with significantly increased abundance of IL-1β, Tregs, and MDSC in tongues. Partial depletion of Tregs reduced tumor burden. Moreover, fungal abundance and dectin-1 signaling were elevated in aged mice suggesting a potential role for dectin-1 in modulating immune environment and tumor development. Confirming this tenet, dectin-1 deficient mice showed diminished IL-1β, reduced infiltration of Tregs and MDSC in the tongues, as well as slower progression and reduced severity of tumor burden. Taken together, these data identify an important role of dectin-1 signaling in establishing the intra-tumoral immunosuppressive milieu and promoting OSCC tumorigenesis in the context of aging.
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Affiliation(s)
- Natarajan Bhaskaran
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Sangeetha Jayaraman
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Cheriese Quigley
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Prerna Mamileti
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Mahmoud Ghannoum
- Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Dermatology, School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Aaron Weinberg
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Jason Thuener
- Otolaryngology-Head and Neck surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Quintin Pan
- Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Otolaryngology-Head and Neck surgery, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Pushpa Pandiyan
- Department of Biological Sciences, School of Dental Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, OH, United States.,Case Comprehensive Cancer Center, Case Western Reserve University, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
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24
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Ahmad S, Alfouzan W. Candida auris: Epidemiology, Diagnosis, Pathogenesis, Antifungal Susceptibility, and Infection Control Measures to Combat the Spread of Infections in Healthcare Facilities. Microorganisms 2021; 9:microorganisms9040807. [PMID: 33920482 PMCID: PMC8069182 DOI: 10.3390/microorganisms9040807] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 12/21/2022] Open
Abstract
Candida auris, a recently recognized, often multidrug-resistant yeast, has become a significant fungal pathogen due to its ability to cause invasive infections and outbreaks in healthcare facilities which have been difficult to control and treat. The extraordinary abilities of C. auris to easily contaminate the environment around colonized patients and persist for long periods have recently resulted in major outbreaks in many countries. C. auris resists elimination by robust cleaning and other decontamination procedures, likely due to the formation of 'dry' biofilms. Susceptible hospitalized patients, particularly those with multiple comorbidities in intensive care settings, acquire C. auris rather easily from close contact with C. auris-infected patients, their environment, or the equipment used on colonized patients, often with fatal consequences. This review highlights the lessons learned from recent studies on the epidemiology, diagnosis, pathogenesis, susceptibility, and molecular basis of resistance to antifungal drugs and infection control measures to combat the spread of C. auris infections in healthcare facilities. Particular emphasis is given to interventions aiming to prevent new infections in healthcare facilities, including the screening of susceptible patients for colonization; the cleaning and decontamination of the environment, equipment, and colonized patients; and successful approaches to identify and treat infected patients, particularly during outbreaks.
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25
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Giovannenze F, Murri R, Palazzolo C, Taccari F, Camici M, Spanu T, Posteraro B, Sanguinetti M, Cauda R, Onder G, Fantoni M. Predictors of mortality among adult, old and the oldest old patients with bloodstream infections: An age comparison. Eur J Intern Med 2021; 86:66-72. [PMID: 33414015 DOI: 10.1016/j.ejim.2020.12.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/30/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Bloodstream infections (BSIs) are a major cause of mortality in elderly. Objective of the study is to identify factors predictive of mortality in old and oldest old patients. METHODS This is a single centre retrospective observational study, including all patients admitted to Fondazione Policlinico A. Gemelli university hospital and diagnosed with BSI. Patients were stratified into three groups according to age: adult (A), younger than 65; old (O), aged between 65 and 80; oldest old (OO), older than 80. Primary outcome was 30-day in-hospital mortality. Secondary outcomes were duration of antimicrobial therapy (DOT) and length of hospital stay (LOS). RESULTS Of the 1034 patients included in the study, 346 were in group A, 447 in group O and 241 in group OO. The rate of 30-day mortality raised from 6.9% (24/346) in group A to 10.8% (84/447) in group O and 33.2% (80/241) in group OO (p<0.01), while DOT and LOS significantly decreased moving from adults to oldest old (p<0.01). Methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus spp were both independently correlated to an increased 30-day mortality risk selectively in patients older than 80 (MRSA: HR 2.37, p=0.03; Enterococcus spp: HR 2.44, p=0.01). CONCLUSIONS BSIs have a high impact on survival in old and oldest old patients. BSIs by gram-positive pathogens, in particular MRSA and Enterococcus spp, should be a wake-up call for physicians, who should focus efforts on adequate and prompt antibiotic and support treatment.
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Affiliation(s)
- Francesca Giovannenze
- Dipartimento di Sicurezza e Bioetica, Sezione Malattie Infettive, Università Cattolica S. Cuore, Rome, Italy.
| | - Rita Murri
- Dipartimento di Sicurezza e Bioetica, Sezione Malattie Infettive, Università Cattolica S. Cuore, Rome, Italy; Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy
| | - Claudia Palazzolo
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy; Istituto Nazionale Malattie Infettive Lazzaro Spallanzani, IRCCS, Rome, Italy
| | - Francesco Taccari
- Dipartimento di Sicurezza e Bioetica, Sezione Malattie Infettive, Università Cattolica S. Cuore, Rome, Italy; Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy
| | - Marta Camici
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy; Istituto Nazionale Malattie Infettive Lazzaro Spallanzani, IRCCS, Rome, Italy
| | - Teresa Spanu
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy; Dipartimento di Scienze Biotecnologiche di base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica S. Cuore, Rome, Italy
| | - Brunella Posteraro
- Dipartimento di Scienze Biotecnologiche di base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica S. Cuore, Rome, Italy; Dipartimento di Scienze Gastroenterologiche, Endocrino-Metaboliche e Nefro-Urologiche, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Maurizio Sanguinetti
- Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy; Dipartimento di Scienze Biotecnologiche di base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica S. Cuore, Rome, Italy
| | - Roberto Cauda
- Dipartimento di Sicurezza e Bioetica, Sezione Malattie Infettive, Università Cattolica S. Cuore, Rome, Italy; Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy
| | - Graziano Onder
- Department of Cardiovascular, Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità, Rome, Italy
| | - Massimo Fantoni
- Dipartimento di Sicurezza e Bioetica, Sezione Malattie Infettive, Università Cattolica S. Cuore, Rome, Italy; Dipartimento di Scienze di Laboratorio e Infettivologiche, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy
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26
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Zatta M, Luzzati R. Adequate Management of Nosocomial Candidemia in Very Old Patients. Gerontology 2021; 67:455-456. [PMID: 33735892 DOI: 10.1159/000514483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Marta Zatta
- Infectious Diseases Unit, University Hospital of Trieste, Trieste, Italy,
| | - Roberto Luzzati
- Infectious Diseases Unit, University Hospital of Trieste, Trieste, Italy
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27
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Szabó K, Miskei M, Farkas I, Dombrádi V. The phosphatome of opportunistic pathogen Candida species. FUNGAL BIOL REV 2021. [DOI: 10.1016/j.fbr.2020.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Asai N, Ohashi W, Sakanashi D, Suematsu H, Kato H, Hagihara M, Watanabe H, Shiota A, Koizumi Y, Yamagishi Y, Mikamo H. Combination of Sequential Organ Failure Assessment (SOFA) score and Charlson Comorbidity Index (CCI) could predict the severity and prognosis of candidemia more accurately than the Acute Physiology, Age, Chronic Health Evaluation II (APACHE II) score. BMC Infect Dis 2021; 21:77. [PMID: 33451284 PMCID: PMC7811217 DOI: 10.1186/s12879-020-05719-8] [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: 11/03/2019] [Accepted: 12/18/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Candidemia has emerged as an important nosocomial infection, with a mortality rate of 30-50%. It is the fourth most common nosocomial bloodstream infection (BSI) in the United States and the seventh most common nosocomial BSI in Europe and Japan. The aim of this study was to assess the performance of the Sequential Organ Failure Assessment (SOFA) score for determining the severity and prognosis of candidemia. METHODS We performed a retrospective study of patients admitted to hospital with candidemia between September 2014 and May 2018. The severity of candidemia was evaluated using the SOFA score and the Acute Physiology, Age, Chronic Health Evaluation II (APACHE II) score. Patients' underlying diseases were assessed by the Charlson Comorbidity Index (CCI). RESULTS Of 70 patients enrolled, 41 (59%) were males, and 29 (41%) were females. Their median age was 73 years (range: 36-93 years). The most common infection site was catheter-related bloodstream infection (n=36, 51%).The 30-day, and in-hospital mortality rates were 36 and 43%, respectively. Univariate analysis showed that SOFA score ≥5, APACHE II score ≥13, initial antifungal treatment with echinocandin, albumin < 2.3, C-reactive protein > 6, disturbance of consciousness, and CCI ≥3 were related with 30-day mortality. Of these 7, multivariate analysis showed that the combination of SOFA score ≥5 and CCI ≥3 was the best independent prognostic indicator for 30-day and in-hospital mortality. CONCLUSIONS The combined SOFA score and CCI was a better predictor of the 30-day mortality and in-hospital mortality than the APACHE II score alone.
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Affiliation(s)
- Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, 480-1195 1-1 Yazakokarimata, Nagakute, Aichi, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Wataru Ohashi
- Division of Biostatistics, Clinical Research Center, Aichi Medical University Hospital, Nagakute, Japan
| | - Daisuke Sakanashi
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Hiroyuki Suematsu
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Hideo Kato
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Mao Hagihara
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Hiroki Watanabe
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, 480-1195 1-1 Yazakokarimata, Nagakute, Aichi, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Arufumi Shiota
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Yusuke Koizumi
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, 480-1195 1-1 Yazakokarimata, Nagakute, Aichi, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Yuka Yamagishi
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, 480-1195 1-1 Yazakokarimata, Nagakute, Aichi, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, 480-1195 1-1 Yazakokarimata, Nagakute, Aichi, Japan. .,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Japan.
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29
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Bhaskaran N, Faddoul F, Paes da Silva A, Jayaraman S, Schneider E, Mamileti P, Weinberg A, Pandiyan P. IL-1β-MyD88-mTOR Axis Promotes Immune-Protective IL-17A +Foxp3 + Cells During Mucosal Infection and Is Dysregulated With Aging. Front Immunol 2020; 11:595936. [PMID: 33240286 PMCID: PMC7677307 DOI: 10.3389/fimmu.2020.595936] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/08/2020] [Indexed: 12/22/2022] Open
Abstract
CD4+Foxp3+Tregs maintain immune homeostasis, but distinct mechanisms underlying their functional heterogeneity during infections are driven by specific cytokine milieu. Here we show that MyD88 deletion in Foxp3+ cells altered their function and resulted in increased fungal burden and immunopathology during oral Candida albicans (CA) challenge. Excessive inflammation due to the absence of MyD88 in Tregs coincided with a reduction of the unique population of IL-17A expressing Foxp3+ cells (Treg17) and an increase in dysfunctional IFN-γ+/Foxp3+ cells (TregIFN-γ) in infected mice. Failure of MyD88-/- Tregs to regulate effector CD4+ T cell functions correlated with heightened levels of IFN-γ in CD4+ T cells, as well as increased infiltration of inflammatory monocytes and neutrophils in oral mucosa in vivo. Mechanistically, IL-1β/MyD88 signaling was required for the activation of IRAK-4, Akt, and mTOR, which led to the induction and proliferation of Treg17 cells. In the absence of IL-1 receptor signaling, Treg17 cells were reduced, but IL-6-driven expansion of TregIFN-γ cells was increased. This mechanism was physiologically relevant during Candida infection in aged mice, as they exhibited IL-1 receptor/MyD88 defect in Foxp3+ cells, loss of p-mTORhighTreg17 cells and reduced levels of IL-1β in oral mucosa, which coincided with persistent tongue inflammation. Concurrent with Treg dysfunction, aging was associated with increased CD4+ T cell hyperactivation and heightened levels of IL-6 in mice and humans in oral mucosa in vivo. Taken together, our data identify IL-1β/MyD88/Treg axis as a new component that modulates inflammatory responses in oral mucosa. Also, dysregulation of this axis in an aging immune system may skew host defense towards an immunopathological response in mucosal compartments.
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Affiliation(s)
- Natarajan Bhaskaran
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Fady Faddoul
- Advanced Education in General Dentistry, Case Western Reserve University, Cleveland, OH, United States
| | - Andre Paes da Silva
- Department of Periodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Sangeetha Jayaraman
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Elizabeth Schneider
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Prerna Mamileti
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Aaron Weinberg
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States
| | - Pushpa Pandiyan
- Department of Biological Sciences, Case Western Reserve University, Cleveland, OH, United States.,Department of Pathology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States
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30
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Zatta M, Di Bella S, Giacobbe DR, Del Puente F, Merelli M, Azzini AM, Brugnaro P, Vedovelli C, Cattelan AM, Busetti M, Gatti G, Bassetti M, Luzzati R. Clinical Features and Mortality of Nosocomial Candidemia in Very Old Patients: A Multicentre Italian Study. Gerontology 2020; 66:532-541. [PMID: 33070136 DOI: 10.1159/000510638] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 08/04/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Being elderly is a well-known risk factor for candidemia, but few data are available on the prognostic impact of candidemia in the very old (VO) subjects, as defined as people aged ≥75 years. OBJECTIVE The aim of this study was to assess risk factors for nosocomial candidemia in two groups of candidemia patients, consisting of VO patients (≥75 years) and adult and old (AO) patients (18-74 years). In addition, risk factors for death (30-day mortality) were analysed separately in the two groups. METHODS We included all consecutive candidemia episodes from January 2011 to December 2013 occurring in six referral hospitals in north-eastern Italy. RESULTS A total of 683 nosocomial candidemia episodes occurred. Of those, 293 (42.9%) episodes were in VO and 390 (57.1%) in AO patients. Hospitalization in medical wards, chronic renal failure, urinary catheter, and peripheral parenteral nutrition (PPN) were more common in VO than in AO patients. In the former patient group, adequate antifungal therapy (73.2%) and central venous catheter (CVC) removal (67.6%) occurred less frequently than in AO patients (82.5 and 80%, p < 0.002 and p < 0.004, respectively). Thirty-day mortality was higher in VO compared to AO patients (47.8 vs. 23.6%, p < 0.0001). In AO patients, independent risk factors for death were age (OR 1.04, 95% CI 1.00-1.09, p = 0.038), recent history of chemotherapy (OR 22.01, 95% CI 3.12-155.20, p = 0.002), and severity of sepsis (OR 40.68, 95% CI 7.42-223.10, p < 0.001); CVC removal was associated with higher probability of survival (OR 0.10, 95% CI 0.03-0.33, p < 0.001). In VO patients, independent risk factors for death were PPN (OR 3.5, 95% CI 1.17-10.47, p = 0.025) and hospitalization in medical wards (OR 2.58, 95% CI 1.02-6.53, p = 0.046), while CVC removal was associated with improved survival (OR 0.40, 95% CI 0.16-1.00, p = 0.050). CONCLUSION Thirty-day mortality was high among VO patients and was associated with inadequate management of candidemia, especially in medical wards.
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Affiliation(s)
- Marta Zatta
- Infectious Diseases Unit, University Hospital of Trieste, Trieste, Italy,
| | - Stefano Di Bella
- Infectious Diseases Unit, University Hospital of Trieste, Trieste, Italy
| | | | - Filippo Del Puente
- Clinica Malattie Infettive, Ospedale Policlinico San Martino, IRCCS, Genoa, Italy
| | - Maria Merelli
- Infectious Diseases Division, Santa Maria Misericordia University Hospital, Udine, Italy
| | | | | | | | - Anna Maria Cattelan
- Infectious and Tropical Diseases Division, University Hospital, Padua, Italy
| | - Marina Busetti
- Laboratory for Microbiology, University Hospital, Trieste, Italy
| | - Giuseppe Gatti
- Division of Cardiac Surgery, University Hospital, Trieste, Italy
| | - Matteo Bassetti
- Clinica Malattie Infettive, Ospedale Policlinico San Martino, IRCCS, Genoa, Italy
| | - Roberto Luzzati
- Infectious Diseases Unit, University Hospital of Trieste, Trieste, Italy
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Mohd Sazlly Lim S, Sinnollareddy M, Sime FB. Challenges in Antifungal Therapy in Diabetes Mellitus. J Clin Med 2020; 9:E2878. [PMID: 32899911 PMCID: PMC7565282 DOI: 10.3390/jcm9092878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 09/03/2020] [Indexed: 01/12/2023] Open
Abstract
Diabetic patients have an increased propensity to Candida sp. infections due to disease-related immunosuppression and various other physiological alterations. The incidence of candidiasis has increased in number over the years and is linked to significant morbidity and mortality in critically ill and immunosuppressed patients. Treatment of infection in diabetic patients may be complicated due to the various disease-related changes to the pharmacokinetics and pharmacodynamics (PK/PD) of a drug, including antifungal agents. Application of PK/PD principles may be a sensible option to optimise antifungal dosing regimens in this group of patients. Further studies on PK/PD of antifungals in patients with diabetes mellitus are needed as current data is limited or unavailable.
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Affiliation(s)
- Sazlyna Mohd Sazlly Lim
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, University of Queensland, Brisbane 4102, Australia;
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Seri Kembangan 43400, Malaysia
| | - Mahipal Sinnollareddy
- Therapeutic Goods Administration, Canberra 2609, Australia;
- UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Brisbane 4029, Australia
| | - Fekade Bruck Sime
- Centre for Translational Anti-Infective Pharmacodynamics, School of Pharmacy, University of Queensland, Brisbane 4102, Australia;
- UQ Centre for Clinical Research, Faculty of Medicine, University of Queensland, Brisbane 4029, Australia
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32
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Talha KM, DeSimone DC, Sohail MR, Baddour LM. Pathogen influence on epidemiology, diagnostic evaluation and management of infective endocarditis. Heart 2020; 106:1878-1882. [PMID: 32847941 DOI: 10.1136/heartjnl-2020-317034] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/18/2020] [Accepted: 07/22/2020] [Indexed: 12/23/2022] Open
Abstract
Infective endocarditis (IE) is uncommon and has, in the past, been most often caused by viridans group streptococci (VGS). Due to the indolent nature of these organisms, the phrase 'subacute bacterial endocarditis', so-called 'SBE', was routinely used as it characterised the clinical course of most patients that extended for weeks to months. However, in more recent years, there has been a significant shift in the microbiology of IE with the emergence of staphylococci as the most frequent pathogens, and for IE due to Staphylococcus aureus, the clinical course is acute and can be associated with sepsis. Moreover, increases in IE due to enterococci have occurred and have been characterised by treatment-related complications and worse outcomes. These changes in pathogen distribution have been attributed to a diversification in the target population at risk of IE. While prosthetic valve endocarditis and history of IE remain at highest risk of IE, the rise in prevalence of injection drug use, intracardiac device implantations and other healthcare exposures have heavily contributed to the existing pool of at-risk patients. This review focuses on common IE pathogens and their impact on the clinical profile of IE.
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Affiliation(s)
- Khawaja M Talha
- Division of Infectious Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA
| | - Daniel C DeSimone
- Division of Infectious Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Medicine, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Cardiovascular Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA
| | - M Rizwan Sohail
- Division of Infectious Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Medicine, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Cardiovascular Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA
| | - Larry M Baddour
- Division of Infectious Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Medicine, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA.,Department of Cardiovascular Diseases, Mayo Clinic School of Medicine and Science, Rochester, Minnesota, USA
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de Sá NP, Pôssa AP, Perez P, Ferreira JMS, Fonseca NC, Lino CI, Cruz LB, de Oliveira RB, Rosa CA, Borelli BM, Mylonakis E, Fuchs BB, Johann S. Antifungal Activity Directed Toward the Cell Wall by 2-Cyclohexylidenhydrazo- 4-Phenyl-Thiazole Against Candida albicans. Infect Disord Drug Targets 2020; 19:428-438. [PMID: 29852876 DOI: 10.2174/1871526518666180531101605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/10/2018] [Accepted: 05/28/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND The increasing incidence of invasive forms of candidiasis and resistance to antifungal therapy leads us to seek new and more effective antifungal compounds. OBJECTIVE To investigate the antifungal activity and toxicity as well as to evaluate the potential targets of 2- cyclohexylidenhydrazo-4-phenyl-thiazole (CPT) in Candida albicans. METHODS The antifungal activity of CPT against the survival of C. albicans was investigated in Caenorhabditis elegans. Additionally, we determined the effect of CPT on the inhibition of C. albicans adhesion capacity to buccal epithelial cells (BECs), the toxicity of CPT in mammalian cells, and the potential targets of CPT in C. albicans. RESULTS CPT exhibited a minimum inhibitory concentration (MIC) value of 0.4-1.9 µg/mL. Furthermore, CPT at high concentrations (>60 x MIC) showed no or low toxicity in HepG2 cells and <1% haemolysis in human erythrocytes. In addition, CPT decreased the adhesion capacity of yeasts to the BECs and prolonged the survival of C. elegans infected with C. albicans. Analysis of CPT-treated cells showed that their cell wall was thinner than that of untreated cells, especially the glucan layer. We found that there was a significantly lower quantity of 1,3-β-D-glucan present in CPT-treated cells than that in untreated cells. Assays performed on several mutant strains showed that the MIC value of CPT was high for its antifungal activity on yeasts with defective 1,3-β-glucan synthase. CONCLUSION In conclusion, CPT appears to target the cell wall of C. albicans, exhibits low toxicity in mammalian cells, and prolongs the survival of C. elegans infected with C. albicans.
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Affiliation(s)
- Nívea P de Sá
- Departamento de Microbiologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Antonio Carlos, 6627, Pampulha - CEP 31270-901, Belo Horizonte - MG, Brazil
| | - Ana P Pôssa
- Laboratorio de Microbiologia, Campus Centro- Oeste Dona Lindu, Universidade Federal de Sao Joao del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Pilar Perez
- Instituto de Biologia Fundamental y Genomica CSIC, Universidad de Salamanca, Salamanca, Spain
| | - Jaqueline M S Ferreira
- Laboratorio de Microbiologia, Campus Centro- Oeste Dona Lindu, Universidade Federal de Sao Joao del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Nayara C Fonseca
- Departamento de Produtos Farmaceuticos, Faculdade de Farmacia, Universidade Federal de Minas Gerais, Belo Horizonte - MG, Brazil
| | - Cleudiomar I Lino
- Departamento de Produtos Farmaceuticos, Faculdade de Farmacia, Universidade Federal de Minas Gerais, Belo Horizonte - MG, Brazil
| | - Lana B Cruz
- Departamento de Microbiologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Antonio Carlos, 6627, Pampulha - CEP 31270-901, Belo Horizonte - MG, Brazil
| | - Renata B de Oliveira
- Departamento de Produtos Farmaceuticos, Faculdade de Farmacia, Universidade Federal de Minas Gerais, Belo Horizonte - MG, Brazil
| | - Carlos A Rosa
- Departamento de Microbiologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Antonio Carlos, 6627, Pampulha - CEP 31270-901, Belo Horizonte - MG, Brazil
| | - Beatriz M Borelli
- Departamento de Microbiologia, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Antonio Carlos, 6627, Pampulha - CEP 31270-901, Belo Horizonte - MG, Brazil
| | - Eleftherios Mylonakis
- Division of Infectious Diseases, Rhode Island Hospital, Alpert Medical School, and Brown University, Providence, RI, United States
| | - Beth B Fuchs
- Division of Infectious Diseases, Rhode Island Hospital, Alpert Medical School, and Brown University, Providence, RI, United States
| | - Susana Johann
- Instituto de Biologia Fundamental y Genomica CSIC, Universidad de Salamanca, Salamanca, Spain
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Puel A. Human inborn errors of immunity underlying superficial or invasive candidiasis. Hum Genet 2020; 139:1011-1022. [PMID: 32124012 DOI: 10.1007/s00439-020-02141-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/18/2020] [Indexed: 12/24/2022]
Abstract
Candida species, including C. albicans in particular, can cause superficial or invasive disease, often in patients with known acquired immunodeficiencies or iatrogenic conditions. The molecular and cellular basis of these infections in patients with such risk factors remained largely elusive, until the study of inborn errors of immunity clarified the basis of the corresponding inherited and "idiopathic" infections. Superficial candidiasis, also known as chronic mucocutaneous candidiasis (CMC), can be caused by inborn errors of IL-17 immunity. Invasive candidiasis can be caused by inborn errors of CARD9 immunity. In this chapter, we review both groups of inborn errors of immunity, and discuss the contribution of these studies to the deciphering of the critical mechanisms of anti-Candida immunity in patients with other conditions.
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Affiliation(s)
- Anne Puel
- Laboratory of Human Genetics of Infectious Diseases, INSERM U1163, Necker Hospital for Sick Children, Necker Branch, 75015, Paris, France. .,Imagine Institute, Paris University, 75015, Paris, France. .,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, Rockefeller Branch, New York, NY, 10065, USA.
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35
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Wang Q, Yang M, Wang C, Cui J, Li X, Wang C. Diagnostic efficacy of serum cytokines and chemokines in fungal bloodstream infection in febrile patients. J Clin Lab Anal 2020; 34:e23149. [PMID: 31971308 PMCID: PMC7171303 DOI: 10.1002/jcla.23149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/04/2019] [Accepted: 11/12/2019] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The role of serum cytokines/chemokines in early diagnosis of fungal infections has not been clearly clarified yet. This study aims to measure the serum levels of cytokines/chemokines in cases of fungemia and to compare them with culture-negative controls. METHODS In total, fourteen types of serum cytokines and chemokines from 41 patients with fungemia were compared with 57 patients with negative blood culture results. The cytokine and chemokine levels were detected with multiplex platform. We then performed statistical analysis as a two-tailed P < .05. ROC analysis was performed, and an area under the curve (AUC), and sensitivity and specificity values were calculated to determine the efficacy of various cytokines and chemokines for fungemia. Binary logistic regression was performed to further explore the combination mode of cytokines and chemokines, which could increase the diagnostic efficiency. RESULTS C-reactive protein and procalcitonin were significantly higher compared with those in negative control group, while white blood cell, percentage of neutrophil, percentage of lymphocyte, and ratio of neutrophil and lymphocyte did not differentiate between two groups. Serum levels of IFN-γ, TNF-α, MIP-1β, IL-6, IL-8, IL-10, IL-12p70, and IL-17 were significantly higher in patients with fungemia compared with the control group. Combination of MIP-1β and IL-17 could improve the AUC, sensitivity, and specificity for the diagnosis of fungemia. CONCLUSION Our study demonstrates that serum cytokines and chemokines including IFN-γ, TNF-α, MIP-1β, IL-6, IL-8, IL-10, IL-12p70, and IL-17 could be considered as diagnostic markers for fungemia. Combination of these biomarkers might improve the diagnostic efficiency of fungemia.
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Affiliation(s)
- Qi Wang
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China.,Department of Orthopedics, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China
| | - Ming Yang
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China.,Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Chi Wang
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China
| | - Jiayue Cui
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China.,School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xinjun Li
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China
| | - Chengbin Wang
- Department of Clinical Laboratory Medicine, Chinese PLA General Hospital & Medical School of Chinese PLA, Beijing, China
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Mamtani S, Aljanabi NM, Gupta Rauniyar RP, Acharya A, Malik BH. Candida Endocarditis: A Review of the Pathogenesis, Morphology, Risk Factors, and Management of an Emerging and Serious Condition. Cureus 2020; 12:e6695. [PMID: 32104631 PMCID: PMC7026878 DOI: 10.7759/cureus.6695] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Infective endocarditis is a significant healthcare burden due to the associated high mortality and complications. Endocarditis caused by both Candida albicans (C. albicans) and non-Candida albicans Candida (NCAC) species has been associated with a substantial rise in in-hospital morbidity and mortality. We used the Pubmed database to identify 47 out of 101 articles that had met our inclusion and exclusion criteria. We had put in place a broad inclusion criterion with no age or gender restrictions. These 47 articles included abstracts, 11 review articles, 13 case reports, 10 research articles, 1 clinical trial report, 1 meta-analysis, and other research articles. And they comprehensively cover the pathogenesis, risk factors, and management of infections caused by C. albicans and NCAC species in the past 26 years. The articles we scanned provided us with information on different associations in correlation to multiple types of Candida species. Here, we discuss the association between Candida and endocarditis, a major cause of morbidity and mortality in both C. albicans and NCAC. We also present our understanding regarding this interesting association and attempt to address some of the recurring questions.
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Affiliation(s)
- Sahil Mamtani
- Infectious Diseases Research, Veterans Affairs Medical Center, Lebanon, USA
| | - Nawar Muneer Aljanabi
- Internal Medicine, California Institute of Behavioral Neurosciences and Psychology, Fairfield, USA
| | | | - Ashu Acharya
- Internal Medicine, California Institute of Behavioral Neurosciences and Psychology, Fairfield, USA
| | - Bilal Haider Malik
- Internal Medicine, California Institute of Behavioral Neurosciences and Psychology, Fairfield, USA
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Ortega-Loubon C, Cano-Hernández B, Poves-Alvarez R, Muñoz-Moreno MF, Román-García P, Balbás-Alvarez S, de la Varga-Martínez O, Gómez-Sánchez E, Gómez-Pesquera E, Lorenzo-López M, Tamayo E, Heredia-Rodríguez M. The Overlooked Immune State in Candidemia: A Risk Factor for Mortality. J Clin Med 2019; 8:jcm8101512. [PMID: 31547077 PMCID: PMC6832466 DOI: 10.3390/jcm8101512] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/10/2019] [Accepted: 09/17/2019] [Indexed: 12/13/2022] Open
Abstract
Lymphopenia has been related to increased mortality in septic patients. Nonetheless, the impact of lymphocyte count on candidemia mortality and prognosis has not been addressed. We conducted a retrospective study, including all admitted patients with candidemia from 2007 to 2016. We examined lymphocyte counts during the first 5 days following the diagnosis of candidemia. Multivariable logistic regression analysis was performed to determine the relationship between lymphocyte count and mortality. Classification and Regression Tree analysis was used to identify the best cut-off of lymphocyte count for mortality associated with candidemia. From 296 cases of candidemia, 115 died, (39.8% 30-day mortality). Low lymphocyte count was related to mortality and poor outcome (p < 0.001). Lymphocyte counts <0.703 × 109 cells/L at diagnosis (area under the curve (AUC)-ROC, 0.783 ± 0.042; 95% confidence interval (CI), 0.700-0.867, p < 0.001), and lymphocyte count <1.272 × 109 cells/L five days later (AUC-ROC, 0.791 ± 0.038; 95%CI, 0.716-0.866, p < 0.001) increased the odds of mortality five-fold (odds ratio (OR), 5.01; 95%CI, 2.39-10.93) at time of diagnosis, and three-fold (OR, 3.27; 95%CI, 1.24-8.62) by day 5, respectively. Low lymphocyte count is an independent predictor of mortality in patients with candidemia and might serve as a biomarker for predicting candidemia-associated mortality and poor outcome.
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Affiliation(s)
- Christian Ortega-Loubon
- Department of Cardiac Surgery, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
| | - Beatriz Cano-Hernández
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - Rodrigo Poves-Alvarez
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - María Fe Muñoz-Moreno
- Unit of Research, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - Patricia Román-García
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - Sara Balbás-Alvarez
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - Olga de la Varga-Martínez
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
| | - Esther Gómez-Sánchez
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
- Department of Surgery, Faculty of Medicine, University of Valladolid, Ramon y Cajal Ave 7, 47005 Valladolid, Spain.
| | - Estefanía Gómez-Pesquera
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
- Department of Surgery, Faculty of Medicine, University of Valladolid, Ramon y Cajal Ave 7, 47005 Valladolid, Spain.
| | - Mario Lorenzo-López
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
- Department of Surgery, Faculty of Medicine, University of Valladolid, Ramon y Cajal Ave 7, 47005 Valladolid, Spain.
| | - Eduardo Tamayo
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
- Department of Anaesthesiology, Clinic University Hospital of Valladolid, Ramon y Cajal Ave. 3, 47003 Valladolid, Spain.
- Department of Surgery, Faculty of Medicine, University of Valladolid, Ramon y Cajal Ave 7, 47005 Valladolid, Spain.
| | - María Heredia-Rodríguez
- BioCritic. Group for Biomedical Research in Critical Care Medicine, Ramon y Cajal Ave. 7, 47005 Valladolid, Spain.
- Department of Surgery, Faculty of Medicine, University of Valladolid, Ramon y Cajal Ave 7, 47005 Valladolid, Spain.
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Karasuno T, Sata H, Noda Y, Imakita M, Yasumi M. Invasive candidiasis leading to gastric perforation in an immunocompromised patient. IDCases 2019; 18:e00627. [PMID: 31516828 PMCID: PMC6727104 DOI: 10.1016/j.idcr.2019.e00627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/18/2019] [Accepted: 08/18/2019] [Indexed: 01/05/2023] Open
Abstract
Invasive candidiasis remains an important cause of mortality and morbidity in patients with underlying diseases. Here, we report a case of gastric perforation due to Candia glabrata infection in a 74-year-old-male with Paroxysmal nocturnal hemoglobinuria (PNH) who received long-term corticosteroid treatment of hemophagocytic syndrome associated with acute cholecystitis. Total gastrectomy was performed, and he was treated liposomal amphotericin B. The patient was extubated successfully on the 2nd postoperative day, but the patient died of Pneumocystis jirovecii pneumonia (PJP). An autopsy revealed that there was a small amount of the cystic form of Pneumocystic jirovecii, but there was not the presence of Candida spp. Concerning the prophylaxis of invasive candidiasis, there is no strong evidence-based data in clinical practice in immunocompromised patients, such as those receiving long-term immunomodulatory therapy or corticosteroids. Our present case suggests the importance of fungal management and may indicate the need for a new approach to the fungal prophylaxis in such patients.
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Affiliation(s)
- Takahiro Karasuno
- Department of Hematology, Rinku General Medical Center, Japan
- Corresponding author at: 2-3 Ourai-Kita, Rinku, Izumisano, Osaka, 598-8577, Japan.
| | - Hiroshi Sata
- Department of Hematology, Rinku General Medical Center, Japan
| | - Yuri Noda
- Department of Pathology, Kaizuka City Hospital, Japan
| | - Masami Imakita
- Department of Pathology, Rinku General Medical Center, Japan
| | - Masato Yasumi
- Department of Hematology, Rinku General Medical Center, Japan
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Córdoba S, Vivot W, Szusz W, Albo G. Antifungal Activity of Essential Oils Against Candida Species Isolated from Clinical Samples. Mycopathologia 2019; 184:615-623. [PMID: 31359292 DOI: 10.1007/s11046-019-00364-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 07/18/2019] [Indexed: 12/30/2022]
Abstract
We evaluated the in vitro antifungal activity of essential oils obtained from the aromatic plants Laurus nobilis, Thymus vulgaris, Mentha piperita, Cymbopogon citratus and Lippia junelliana against the following Candida species isolated from clinical samples: C. krusei (n = 10); C. albicans (n = 50); C. glabrata (n = 70) and C. parapsilosis (n = 80). The minimal inhibitory concentration (MIC) was determined according to EDef 7.3.1 document from EUCAST. Amphotericin B and fluconazole were the antifungal drugs used as inhibition control. The concentration ranges evaluated were 0.4-800 and 0.03-128 mg l-1 for essential oils and antifungal drugs, respectively. MIC50 and MIC90, mode and ranges were calculated. All the Candida spp. evaluated were susceptible to amphotericin B (MIC ≤ 1 mg l-1), while fluconazole was inactive for C. krusei (MIC ≥ 32 mg l-1) and intermediate for C. glabrata (MIC≤ 32 mg l-1). The essential oils showed antifungal activity on Candida spp. tested with MIC90 values ranging from 0.8 to 800 mg l-1. In general, the most active essential oils were L. nobilis and T. vulgaris (MIC90 0.8-0.16 mg l-1), and the least active was C. officinalis (MIC90 400-800 mg l-1). C. krusei was inhibited by 5/6 of the essential oils evaluated, and C. glabrata was the least susceptible one. This in vitro study confirms the antifungal activity of these six essential oils assayed which could be a potential source of new molecules useful to control fungal infections caused by some Candida species, including those resistant to antifungal drugs.
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Affiliation(s)
- S Córdoba
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina. .,Cátedra Micología Médica e Industrial, Universidad Nacional de La Plata, Calle 60 y 119. La Plata, CP 1900, Buenos Aires, Argentina.
| | - W Vivot
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina
| | - W Szusz
- Departamento Micología, INEI ANLIS "Dr. Carlos G. Malbrán", Av. Vélez Sarsfield 563, CP 1281, Buenos Aires, Argentina
| | - G Albo
- Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Calle 60 y 119. La Plata, CP 1900, Buenos Aires, Argentina
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40
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Keighley C, Chen SCA, Marriott D, Pope A, Chapman B, Kennedy K, Bak N, Underwood N, Wilson HL, McDonald K, Darvall J, Halliday C, Kidd S, Nguyen Q, Hajkowicz K, Sorrell TC, Van Hal S, Slavin MA. Candidaemia and a risk predictive model for overall mortality: a prospective multicentre study. BMC Infect Dis 2019; 19:445. [PMID: 31113382 PMCID: PMC6528341 DOI: 10.1186/s12879-019-4065-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/02/2019] [Indexed: 01/21/2023] Open
Abstract
Background Candidaemia is associated with high mortality. Variables associated with mortality have been published previously, but not developed into a risk predictive model for mortality. We sought to describe the current epidemiology of candidaemia in Australia, analyse predictors of 30-day all-cause mortality, and develop and validate a mortality risk predictive model. Methods Adults with candidaemia were studied prospectively over 12 months at eight institutions. Clinical and laboratory variables at time of blood culture-positivity were subject to multivariate analysis for association with 30-day all-cause mortality. A predictive score for mortality was examined by area under receiver operator characteristic curves and a historical data set was used for validation. Results The median age of 133 patients with candidaemia was 62 years; 76 (57%) were male and 57 (43%) were female. Co-morbidities included underlying haematologic malignancy (n = 20; 15%), and solid organ malignancy in (n = 25; 19%); 55 (41%) were in an intensive care unit (ICU). Non-albicans Candida spp. accounted for 61% of cases (81/133). All-cause 30-day mortality was 31%. A gastrointestinal or unknown source was associated with higher overall mortality than an intravascular or urologic source (p < 0.01). A risk predictive score based on age > 65 years, ICU admission, chronic organ dysfunction, preceding surgery within 30 days, haematological malignancy, source of candidaemia and antibiotic therapy for ≥10 days stratified patients into < 20% or ≥ 20% predicted mortality. The model retained accuracy when validated against a historical dataset (n = 741). Conclusions Mortality in patients with candidaemia remains high. A simple mortality risk predictive score stratifying patients with candidaemia into < 20% and ≥ 20% 30-day mortality is presented. This model uses information available at time of candidaemia diagnosis is easy to incorporate into decision support systems. Further validation of this model is warranted. Electronic supplementary material The online version of this article (10.1186/s12879-019-4065-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- C Keighley
- Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, New South Wales Health Pathology, Westmead Hospital, Darcy Rd, 3rd Level, ICPMR Building, Westmead, Sydney, New South Wales, 2145, Australia. .,Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Sydney, NSW, Australia. .,Department of Infectious Diseases, Westmead Hospital, Westmead, Sydney, NSW, Australia.
| | - S C-A Chen
- Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, New South Wales Health Pathology, Westmead Hospital, Darcy Rd, 3rd Level, ICPMR Building, Westmead, Sydney, New South Wales, 2145, Australia.,Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Sydney, NSW, Australia.,Department of Infectious Diseases, Westmead Hospital, Westmead, Sydney, NSW, Australia
| | - D Marriott
- Department of Microbiology and Infectious Diseases, St. Vincent's Hospital, Sydney, NSW, Australia
| | - A Pope
- Eastern Health Clinical School, Monash University, Melbourne, Victoria, Australia.,School of Mathematics and Statistics, University of NSW, Sydney, NSW, Australia
| | - B Chapman
- Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - K Kennedy
- Department of Infectious Diseases and Microbiology, Canberra Hospital, Australian National University Medical School, Canberra, ACT, Australia
| | - N Bak
- Department of Infectious Diseases, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - N Underwood
- Infection Management Services, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - H L Wilson
- Department of Infectious Diseases and Microbiology, Canberra Hospital, Australian National University Medical School, Canberra, ACT, Australia
| | - K McDonald
- Department of Microbiology and Infectious Diseases, St. Vincent's Hospital, Sydney, NSW, Australia
| | - J Darvall
- Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - C Halliday
- Centre for Infectious Diseases and Microbiology Laboratory Services, ICPMR, New South Wales Health Pathology, Westmead Hospital, Darcy Rd, 3rd Level, ICPMR Building, Westmead, Sydney, New South Wales, 2145, Australia
| | - S Kidd
- National Mycology Reference Centre, SA Pathology, Adelaide, SA, Australia
| | - Q Nguyen
- National Centre for Clinical Excellence on Emerging Drugs of Concern (NCCRED), National Drug and Alcohol Research Centre (NDARC), University of New South Wales, Sydney, Australia
| | - K Hajkowicz
- Department of Infectious Diseases, Royal Brisbane and Women's Hospital, School of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - T C Sorrell
- Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Sydney, NSW, Australia.,Department of Infectious Diseases, Westmead Hospital, Westmead, Sydney, NSW, Australia.,Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - S Van Hal
- Department of Infectious Diseases and Microbiology, New South Wales Health Pathology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - M A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, National Centre for Infections in Cancer, Melbourne, VIC, Australia
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41
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Hesstvedt L, Gaustad P, Müller F, Torp Andersen C, Brunborg C, Mylvaganam H, Leiva RA, Berdal JE, Egil Ranheim T, Johnsen BO, Falch BM, Grimnes G, Skogen V, Haarr E, Sandmo Lyngøy A, Wik Larssen K, Hannula R, Åsheim Hansen B, Nordøy I. The impact of age on risk assessment, therapeutic practice and outcome in candidemia. Infect Dis (Lond) 2019; 51:425-434. [PMID: 31010380 DOI: 10.1080/23744235.2019.1595709] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND In Norway, the epidemiological situation of candidemia is followed closely. We have previously demonstrated the highest incidence of candidemia in elderly >65 years of age. However, knowledge of other aspects of this infection is lacking. OBJECTIVE The aim of this nationwide, retrospective study was to examine risk factors, therapeutic practice and outcome in adult candidemia patients according to age. METHODS We retrieved data from medical records from patients who developed candidemia in Norway between 1 January 2008 and 31 December 2012. Data were analyzed according to age, younger patients being between 18 and 65 years, elderly being ≥65 years of age. RESULTS From 771 eligible patients, 738 patients (95.7%) were included (58% men, mean age 65.2 years, 58.1% being ≥65 years). Exposure to health-care related risk factors for candidemia were significantly more common in the younger patients (neutropenia, central venous catheter, mechanical ventilation and chemotherapy) who received empirical treatment more often than the elderly (29.8% vs. 21.7%, p = .01). More elderly did not received any antifungal therapy (27.3% vs 16.8%, p < 0001) and had higher mortality compared to younger patients (45.5% vs 23.9%, p < .0001). In the study population, mortality was higher with age (per 10-years increase, OR 1.43;1.28-1.59, p < 0.0001), in patients not receiving targeted therapy (OR 2.5; CI 1.82-3.36, p < .0001) or any therapy at all (OR 4.64; 3.23-6.68, p < .0001). CONCLUSIONS Risk factors for candidemia, treatment and outcome differed significantly according to age. Given the increasing numbers of elderly, scrutiny on our clinical practice is warranted.
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Affiliation(s)
- Liv Hesstvedt
- a Research Institute for Internal Medicine, Oslo University Hospital, Rikshospitalet , Oslo , Norway.,b Department of Microbiology , Oslo University Hospital, Rikshospitalet , Oslo , Norway
| | - Peter Gaustad
- b Department of Microbiology , Oslo University Hospital, Rikshospitalet , Oslo , Norway.,c Norwegian Mycological Reference Laboratory, Oslo University Hospital , Oslo , Norway.,d Institute of Clinical Medicine, Faculty of Medicine, University of Oslo , Oslo , Norway
| | - Fredrik Müller
- c Norwegian Mycological Reference Laboratory, Oslo University Hospital , Oslo , Norway.,d Institute of Clinical Medicine, Faculty of Medicine, University of Oslo , Oslo , Norway
| | - Cecilie Torp Andersen
- b Department of Microbiology , Oslo University Hospital, Rikshospitalet , Oslo , Norway.,c Norwegian Mycological Reference Laboratory, Oslo University Hospital , Oslo , Norway
| | - Cathrine Brunborg
- e Oslo Centre for Biostatistics & Epidemiology, Oslo University Hospital , Oslo , Norway
| | - Haima Mylvaganam
- f Department of Microbiology , Haukeland University Hospital , Bergen , Norway
| | | | - Jan Erik Berdal
- h Department of Infectious Diseases , Akershus University Hospital , Lørenskog , Norway
| | - Trond Egil Ranheim
- i Department of Microbiology and Infection Control , Akershus University Hospital , Lørenskog , Norway
| | - Bjørn Odd Johnsen
- i Department of Microbiology and Infection Control , Akershus University Hospital , Lørenskog , Norway
| | - Birgit M Falch
- j Department of Microbiology , University Hospital of Northern Norway , Tromsø , Norway
| | - Gro Grimnes
- k Department of Infectious Diseases , University Hospital of Northern Norway , Tromsø , Norway
| | - Vegard Skogen
- k Department of Infectious Diseases , University Hospital of Northern Norway , Tromsø , Norway
| | - Elisebet Haarr
- l Department of Medical Microbiology , University Hospital of Stavanger , Stavanger , Norway
| | - Anita Sandmo Lyngøy
- m Department of Infectious Diseases , University Hospital of Stavanger , Stavanger , Norway
| | - Kjersti Wik Larssen
- n Department of Microbiology , Trondheim University Hospital , Trondheim , Norway
| | - Raisa Hannula
- o Department of Infectious Diseases , Trondheim University Hospital , Trondheim , Norway
| | - Bjørn Åsheim Hansen
- p Department of Infectious Diseases , Vestfold Hospital Trust , Tønsberg , Norway
| | - Ingvild Nordøy
- a Research Institute for Internal Medicine, Oslo University Hospital, Rikshospitalet , Oslo , Norway.,q Section of Clinical immunology and Infectious Diseases , Oslo University Hospital, Rikshospitalet , Oslo , Norway
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Candida glabrata Has No Enhancing Role in the Pathogenesis of Candida-Associated Denture Stomatitis in a Rat Model. mSphere 2019; 4:4/2/e00191-19. [PMID: 30944214 PMCID: PMC6449607 DOI: 10.1128/msphere.00191-19] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Many denture wearers suffer from Candida-associated denture stomatitis (DS), a fungal infection of the hard palate in contact with dentures. Biofilm formation by Candida albicans on denture/palate surfaces is considered a central process in the infection onset. Although Candida glabrata is frequently coisolated with C. albicans, its role in DS pathogenesis is unknown. We show here, using a contemporary rat model that employed a patented intraoral denture system, that C. glabrata established stable colonization on the denture/palate. However, in contrast to C. albicans inoculated rats, rats inoculated with C. glabrata exhibited minimal changes in weight gain or palatal tissue damage. Likewise, coinoculation with the two Candida species resulted in no exacerbation of C. albicans-induced DS pathology. Together, our findings indicate that C. glabrata has no inducing/enhancing role in DS pathogenesis. Denture stomatitis (DS) is a condition characterized by inflammation of the oral mucosa in direct contact with dentures and affects a significant number of otherwise healthy denture wearers. Candida-associated DS is predominantly caused by Candida albicans, a dimorphic fungus that readily colonizes and forms biofilms on denture materials. Previous studies showed a requirement for Candida biofilm formation on both palate and dentures in infection and identified fungal morphogenic transcription factors, Efg1 and Bcr1, as key players in DS pathogenesis. While both C. albicans and Candida glabrata are frequently coisolated in mucosal candidiasis, a pathogenic role for C. glabrata in DS remains unknown. Using an established rat model of DS, we sought to determine whether C. glabrata alone or coinoculation with C. albicans establishes colonization and causes palatal tissue damage and inflammation. Rats fitted with custom dentures were inoculated with C. albicans and/or C. glabrata and monitored over a 4-week period for fungal burden (denture/palate), changes in body weight, and tissue damage via lactate dehydrogenase (LDH) release as well as palatal staining by hematoxylin and eosin (H&E) and immunohistochemistry for myeloperoxidase (MPO) as measures of inflammation. C. glabrata colonized the denture/palate similarly to C. albicans. In contrast to C. albicans, colonization by C. glabrata resulted in minimal changes in body weight, palatal LDH release, and MPO expression. Coinoculation with both species had no obvious modulation of C. albicans-mediated pathogenic effects. These data suggest that C. glabrata readily establishes colonization on denture and palate but has no apparent role for inducing/enhancing C. albicans pathogenesis in DS. IMPORTANCE Many denture wearers suffer from Candida-associated denture stomatitis (DS), a fungal infection of the hard palate in contact with dentures. Biofilm formation by Candida albicans on denture/palate surfaces is considered a central process in the infection onset. Although Candida glabrata is frequently coisolated with C. albicans, its role in DS pathogenesis is unknown. We show here, using a contemporary rat model that employed a patented intraoral denture system, that C. glabrata established stable colonization on the denture/palate. However, in contrast to C. albicans inoculated rats, rats inoculated with C. glabrata exhibited minimal changes in weight gain or palatal tissue damage. Likewise, coinoculation with the two Candida species resulted in no exacerbation of C. albicans-induced DS pathology. Together, our findings indicate that C. glabrata has no inducing/enhancing role in DS pathogenesis.
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Candidaemia in an Irish intensive care unit setting between 2004 and 2018 reflects increased incidence of Candida glabrata. J Hosp Infect 2019; 102:347-350. [PMID: 30668957 DOI: 10.1016/j.jhin.2019.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 12/19/2018] [Accepted: 01/15/2019] [Indexed: 11/21/2022]
Abstract
The cumulative incidence of candidaemia in an Irish intensive care unit (ICU) setting between January 2004 and August 2018 was 17/1000 ICU admissions. Candida albicans was responsible for 55% (N=41) of cases. C. glabrata (N=21, 28%) was the next most prevalent species, and has been identified most frequently since 2012. C. glabrata was associated with a higher mortality rate (57%) than C. albicans (29%). All isolates were susceptible to caspofungin (0.05 μg/mL). Notably, 37% of C. glabrata isolates were resistant to fluconazole, with 13% resistant to amphotericin B, highlighting the need for prudent antifungal stewardship to impede development of multi-drug-resistant C. glabrata in the ICU setting.
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Choudhury S. An insight into in vitro susceptibility of non-albicans Candida species from bloodstream infections to echinocandins in a Singapore cohort. Pathology 2018; 51:106-108. [PMID: 30454879 DOI: 10.1016/j.pathol.2018.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/18/2018] [Accepted: 07/25/2018] [Indexed: 11/16/2022]
Affiliation(s)
- Saugata Choudhury
- Department of Laboratory Medicine, Tan Tock Seng Hospital, Singapore.
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45
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Abstract
Candida infections in the elderly are an important and expanding clinical problem, with significantly higher mortality in this group than in younger patients. The increasing problem of invasive Candida infections may be related to higher prevalence of immunocompromised older people and the emergence of treatment resistance. Older people, especially the frail and critically ill, are at higher risk of medication-related harmful effects due to changes in pharmacokinetics and pharmacodynamics, which may be further complicated by organ dysfunction, diminished homeostatic control, co-morbidities and polypharmacy. Here, we review the available options for the treatment of Candida infections and provide insights into the challenges surrounding the optimal use of antifungal drugs in the elderly.
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46
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Florio W, Tavanti A, Ghelardi E, Lupetti A. MALDI-TOF MS Applications to the Detection of Antifungal Resistance: State of the Art and Future Perspectives. Front Microbiol 2018; 9:2577. [PMID: 30425693 PMCID: PMC6218422 DOI: 10.3389/fmicb.2018.02577] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/09/2018] [Indexed: 01/22/2023] Open
Abstract
MALDI-TOF MS technology has made possible revolutionary advances in the diagnosis of infectious diseases. Besides allowing rapid and reliable identification of bacteria and fungi, this technology has been recently applied to the detection of antimicrobial resistance. Several approaches have been proposed and evaluated for application of MALDI-TOF MS to antimicrobial susceptibility testing of bacteria, and some of these have been or might be applied also to yeasts. In this context, the comparison of proteomic profiles of bacteria/yeasts incubated with or without antimicrobial drugs is a very promising method. Another recently proposed MALDI-TOF MS-based approach for antifungal susceptibility testing is the application of the semi-quantitative MALDI Biotyper antibiotic susceptibility test rapid assay, which was originally designed for antimicrobial susceptibility testing of bacteria, to yeast isolates. Increasingly effective and accurate MS tools and instruments as well as the possibility to optimize analytical parameter settings for targeted applications have generated an expanding area in the field of clinical microbiology diagnostics, paving the way for the development and/or optimization of rapid methods for antifungal susceptibility testing in the near future. In the present study, the state of the art of MALDI-TOF MS applications to antifungal susceptibility testing is reviewed, and cutting-edge developments are discussed, with a particular focus on methods allowing rapid detection of drug resistance in pathogenic fungi causing systemic mycoses.
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Affiliation(s)
- Walter Florio
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | | | - Emilia Ghelardi
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | - Antonella Lupetti
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
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47
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Vecchione A, Florio W, Celandroni F, Barnini S, Lupetti A, Ghelardi E. A Rapid Procedure for Identification and Antifungal Susceptibility Testing of Yeasts From Positive Blood Cultures. Front Microbiol 2018; 9:2400. [PMID: 30459718 PMCID: PMC6232941 DOI: 10.3389/fmicb.2018.02400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/19/2018] [Indexed: 11/13/2022] Open
Abstract
The development of rapid diagnostic assays for the identification and analysis of antimicrobial resistance of fungal pathogens causing invasive mycoses is of utmost importance to reduce morbidity and mortality. We evaluated the performance of a novel rapid procedure directly applied to monomicrobial blood cultures from patients with bloodstream infection caused by yeast species, including nine Candida and three non-Candida species. For the rapid procedure herein developed, samples of positive blood cultures were transferred into serum separator tubes and treated with sodium dodecyl sulfate; the yeast layer was recovered and directly used for microbial identification by MALDI-TOF mass spectrometry and antifungal susceptibility testing (AFST) by the Sensititre YeastOne Y010 panel. The results were compared with those obtained by the same methods applied to colonies isolated on solid media. Using a score value of 1.700 as cut-off for valid identification, the rapid procedure identified 66 of 124 (53.2%) isolates, all of which concordantly with the reference method. However, adopting a cut-off ≥1.300 and ≥4 consecutive repetitions of the same species in the list of matches would extend concordant identification to 107/124 (86.3%) samples. Importantly, AFST revealed essential agreement between the two methods for all the isolate/antifungal drug combinations tested, including misidentified and not identified isolates. Therefore, the procedure herein developed represents a valid alternative for AFST of yeasts from positive blood cultures, yielding accurate and reliable results at least 24 h earlier than with the routine procedure, thus allowing clinicians to promptly streamline antifungal therapy.
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Affiliation(s)
- Alessandra Vecchione
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | - Walter Florio
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | - Francesco Celandroni
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | | | - Antonella Lupetti
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | - Emilia Ghelardi
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
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Sozio E, Pieralli F, Azzini AM, Tintori G, Demma F, Furneri G, Sbrana F, Bertolino G, Fortunato S, Meini S, Bragantini D, Morettini A, Nozzoli C, Menichetti F, Concia E, Tascini C. A prediction rule for early recognition of patients with candidemia in Internal Medicine: results from an Italian, multicentric, case-control study. Infection 2018; 46:625-633. [PMID: 29949088 DOI: 10.1007/s15010-018-1162-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 06/05/2018] [Indexed: 12/27/2022]
Abstract
PURPOSE Increasing prevalence of candidemia in Internal Medicine wards (IMWs) has been reported in recent years, but risk factors for candida bloodstream infection in patients admitted to IMW may differ from those known in other settings. The aim of this study was to identify risk factors and define a prediction rule for the early recognition of the risk of candidemia in IMW inpatients. METHODS This was a multicentric, retrospective, observational case-control study on non-neutropenic patients with candidemia admitted to IMWs of four large Italian Hospitals. Each eligible patient with candidemia (case) was matched to a control with bacteremia. Stepwise logistic regression analyses were performed. RESULTS Overall, 300 patients (150 cases and 150 controls) were enrolled. The following factors were associated with an increased risk of candidemia and weighted to build a score: total parenteral nutrition (OR 2.45, p = 0.008; 1 point); central venous catheter (OR 2.19, p = 0.031; 1 point); peripherally inserted central catheter (OR 5.63, p < 0.0001; 3 points), antibiotic treatment prior (OR 2.06; p = 0.059; 1 point) and during hospitalization (OR2.38, p = 0.033; 1 point); neurological disability (OR 2.25, p = 0.01; 1 point); and previous hospitalization within 3 months (OR 1.56, p = 0.163; 1 point). At ROC curve analysis, a final score ≥ 4 showed 84% sensitivity, 76% specificity, and 80% accuracy in predicting the risk of candidemia. CONCLUSIONS The proposed scoring system showed to be a simple and highly performing tool in distinguishing bloodstream infections due to Candida and bacteria in patients admitted to IMW. The proposed rule might help to reduce delay in empirical treatment and improve appropriateness in antifungal prescription in septic patients.
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Affiliation(s)
- Emanuela Sozio
- Emergency Department, North-West District, Tuscany HealthCare, Spedali Riuniti Livorno, Viale Alfieri 36, 57100, Leghorn, Italy.
| | - Filippo Pieralli
- Intermediate Care Unit, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
| | - Anna Maria Azzini
- Infectious Disease Unit, Azienda Ospedaliera Universitaria Integrata di Verona, p.Le LA Scuro, Verona, Italy
| | - Giancarlo Tintori
- Emergency Medicine Unit, Nuovo Santa Chiara University Hospital, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Federica Demma
- Health Economics and Outcome Research Department-EBMA Consulting, Milan, Italy
| | - Gianluca Furneri
- Health Economics and Outcome Research Department-EBMA Consulting, Milan, Italy
| | | | | | - Simona Fortunato
- Infectious Diseases Clinic, Nuovo Santa Chiara University Hospital, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Simone Meini
- Department of Internal Medicine, S.M. Annunziata Hospital, Florence, Italy
| | - Damiano Bragantini
- Infectious Disease Unit, Azienda Ospedaliera Universitaria Integrata di Verona, p.Le LA Scuro, Verona, Italy
| | - Alessandro Morettini
- Internal Medicine Unit, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
| | - Carlo Nozzoli
- Internal Medicine Unit, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
| | - Francesco Menichetti
- Infectious Diseases Clinic, Nuovo Santa Chiara University Hospital, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Ercole Concia
- Infectious Disease Unit, Azienda Ospedaliera Universitaria Integrata di Verona, p.Le LA Scuro, Verona, Italy
| | - Carlo Tascini
- First Division of Infectious Diseases, Cotugno Hospital, Azienda Ospedaliera dei Colli, Naples, Italy
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