1
|
Aerts R, Autier B, Gornicec M, Prattes J, Lagrou K, Gangneux JP, Hoenigl M. Point-of-care testing for viral-associated pulmonary aspergillosis. Expert Rev Mol Diagn 2024; 24:231-243. [PMID: 37688631 DOI: 10.1080/14737159.2023.2257597] [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: 06/05/2023] [Revised: 08/17/2023] [Accepted: 09/07/2023] [Indexed: 09/11/2023]
Abstract
INTRODUCTION Over the last years, severe respiratory viral infections, particularly those caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the influenza virus, have emerged as risk factor for viral-associated pulmonary aspergillosis (VAPA) among critically ill patients. Delays in diagnosis of VAPA are associated with increased mortality. Point-of-care-tests may play an important role in earlier diagnosis of VAPA and thus improve patient outcomes. AREAS COVERED The following review will give an update on point-of-care tests for VAPA, analyzing performances in respiratory and blood specimens. EXPERT OPINION Point-of-care tests have emerged, and particularly the IMMY Aspergillus galactomannan lateral flow assay (LFA) shows performances comparable to the galactomannan ELISA for diagnosis of VAPA. Notably, nearly all evaluations of POC tests for VAPA have been performed in COVID-19 patients, with very limited data in influenza patients. For early diagnosis of COVID associated pulmonary aspergillosis (CAPA), the LFA has shown promising performances in respiratory samples, particularly in bronchoalveolar lavage fluid, and may thereby help in improving patient outcomes. In contrast, serum LFA testing may not be useful for early diagnosis of disease, except in cases with invasive tracheobronchial aspergillosis.
Collapse
Affiliation(s)
- Robina Aerts
- Department of Internal Medicine, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Leuven, Belgium
| | - Brice Autier
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR_S 1085, Rennes, France
- Centre Hospitalier Universitaire de Rennes, Laboratory of Parasitology and Mycology, European Excellence Center in Medical Mycology (ECMM-EC), National Reference Center on mycology and antifungals (LA-AspC Chronic aspergillosis and A. fumigatus resistance), Rennes, France
| | - Maximilian Gornicec
- Division of Infectious Diseases, ECMM Excellence Center for Medical Mycology, Department of Medicine, Medical University of Graz, Graz, Austria
| | - Juergen Prattes
- Division of Infectious Diseases, ECMM Excellence Center for Medical Mycology, Department of Medicine, Medical University of Graz, Graz, Austria
- Translational Medical Mycology Research Unit, Medical University of Graz, Graz, Austria
| | - Katrien Lagrou
- Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, KU Leuven, Leuven, Belgium
- Department of Laboratory Medicine, National Reference Center for Mycosis, University Hospitals Leuven, Leuven, Belgium
| | - Jean-Pierre Gangneux
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail), UMR_S 1085, Rennes, France
- Centre Hospitalier Universitaire de Rennes, Laboratory of Parasitology and Mycology, European Excellence Center in Medical Mycology (ECMM-EC), National Reference Center on mycology and antifungals (LA-AspC Chronic aspergillosis and A. fumigatus resistance), Rennes, France
| | - Martin Hoenigl
- Division of Infectious Diseases, ECMM Excellence Center for Medical Mycology, Department of Medicine, Medical University of Graz, Graz, Austria
- Translational Medical Mycology Research Unit, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| |
Collapse
|
2
|
Aerts R, Feys S, Mercier T, Lagrou K. Microbiological Diagnosis of Pulmonary Aspergillus Infections. Semin Respir Crit Care Med 2024; 45:21-31. [PMID: 38228164 DOI: 10.1055/s-0043-1776777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
As microbiological tests play an important role in our diagnostic algorithms and clinical approach towards patients at-risk for pulmonary aspergillosis, a good knowledge of the diagnostic possibilities and especially their limitations is extremely important. In this review, we aim to reflect critically on the available microbiological diagnostic modalities for diagnosis of pulmonary aspergillosis and formulate some future prospects. Timely start of adequate antifungal treatment leads to a better patient outcome, but overuse of antifungals should be avoided. Current diagnostic possibilities are expanding, and are mainly driven by enzyme immunoassays and lateral flow device tests for the detection of Aspergillus antigens. Most of these tests are directed towards similar antigens, but new antibodies towards different targets are under development. For chronic forms of pulmonary aspergillosis, anti-Aspergillus IgG antibodies and precipitins remain the cornerstone. More studies on the possibilities and limitations of molecular testing including targeting resistance markers are ongoing. Also, metagenomic next-generation sequencing is expanding our future possibilities. It remains important to combine different test results and interpret them in the appropriate clinical context to improve performance. Test performances may differ according to the patient population and test results may be influenced by timing, the tested matrix, and prophylactic and empiric antifungal therapy. Despite the increasing armamentarium, a simple blood or urine test for the diagnosis of aspergillosis in all patient populations at-risk is still lacking. Research on diagnostic tools is broadening from a pathogen focus on biomarkers related to the patient and its immune system.
Collapse
Affiliation(s)
- Robina Aerts
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Department of Internal Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Simon Feys
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Medical Intensive Care Unit, University Hospitals Leuven, Leuven, Belgium
| | - Toine Mercier
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Department of Oncology-Hematology, AZ Sint-Maarten, Mechelen, Belgium
| | - Katrien Lagrou
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
- Department of Laboratory Medicine and National Reference Center for Mycosis, University Hospitals Leuven, Leuven, Belgium
| |
Collapse
|
3
|
Er B, Er AG, Gulmez D, Sahin TK, Metan G, Saribas Z, Arikan-Akdagli S, Uzun O. Diagnostic performance and longitudinal analysis of fungal biomarkers in COVID-19 associated pulmonary aspergillosis. Heliyon 2023; 9:e21721. [PMID: 37942162 PMCID: PMC10628712 DOI: 10.1016/j.heliyon.2023.e21721] [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: 08/05/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/10/2023] Open
Abstract
Objectives Galactomannan lateral flow assay (GM-LFA) is a reliable test for COVID-19 associated pulmonary aspergillosis (CAPA) diagnosis. We aimed to assess the diagnostic performance of GM-LFA with different case definitions, the association between the longitudinal measurements of serum GM-ELISA, GM-LFA, and the risk of death. Methods Serum and nondirected bronchial lavage (NBL) samples were periodically collected. The sensitivity and specificity analysis for GM-LFA was done in different time periods. Longitudinal analysis was done with the joint model framework. Results A total of 207 patients were evaluated. On the day of CAPA diagnosis, serum GM-LFA had a sensitivity of 42 % (95 % CI: 23-63) and specificity of 82 % (95 % CI: 78-84), while NBL GM-LFA had a sensitivity of 73 % (95 % CI: 45-92), specificity of 85 % (95 % CI: 76-91) for CAPA. Sensitivity decreased through the following days in both samples. Univariate joint model analysis showed that increasing GM-LFA and GM-ELISA levels were associated with increased mortality, and that effect remained same with serum GM-ELISA in multivariate joint model analysis. Conclusion GM-LFA, particularly in NBL samples, seems to be a reliable method for CAPA diagnosis. For detecting patients with higher risk of mortality, longitudinal measurement of serum GM-ELISA can be useful.
Collapse
Affiliation(s)
- Berrin Er
- Division of Intensive Care, Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ahmet Gorkem Er
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
- Department of Health Informatics, Middle East Technical University, Ankara, Turkey
| | - Dolunay Gulmez
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Taha Koray Sahin
- Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Gökhan Metan
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Zeynep Saribas
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Sevtap Arikan-Akdagli
- Department of Medical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Omrum Uzun
- Department of Infectious Diseases and Clinical Microbiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| |
Collapse
|
4
|
Beltrame A, Stevens DA, Haiduven D. Mortality in ICU Patients with COVID-19-Associated Pulmonary Aspergillosis. J Fungi (Basel) 2023; 9:689. [PMID: 37367625 DOI: 10.3390/jof9060689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/11/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023] Open
Abstract
A review of 38 studies involving 1437 COVID-19 patients admitted to intensive care units (ICUs) with pulmonary aspergillosis (CAPA) was conducted to investigate whether mortality has improved since the pandemic's onset. The study found that the median ICU mortality was 56.8%, ranging from 30% to 91.8%. These rates were higher for patients admitted during 2020-2021 (61.4%) compared to 2020 (52.3%), and prospective studies found higher ICU mortality (64.7%) than retrospective ones (56.4%). The studies were conducted in various countries and used different criteria to define CAPA. The percentage of patients who received antifungal therapy varied across studies. These results indicate that the mortality rate among CAPA patients is a growing concern, mainly since there has been an overall reduction in mortality among COVID-19 patients. Urgent action is needed to improve prevention and management strategies for CAPA, and additional research is needed to identify optimal treatment strategies to reduce mortality rates among these patients. This study serves as a call to action for healthcare professionals and policymakers to prioritize CAPA, a serious and potentially life-threatening complication of COVID-19.
Collapse
Affiliation(s)
- Anna Beltrame
- College of Public Health, University of South Florida, Tampa, FL 33622, USA
| | - David A Stevens
- California Institute for Medical Research, San Jose, CA 95128, USA
- Division of Infectious Diseases and Geographic Medicine, Stanford University Medical School, Stanford, CA 94305, USA
| | - Donna Haiduven
- College of Public Health, University of South Florida, Tampa, FL 33622, USA
| |
Collapse
|
5
|
White PL. Developments in Fungal Serology. CURRENT FUNGAL INFECTION REPORTS 2023; 17:1-12. [PMID: 37360856 PMCID: PMC10099008 DOI: 10.1007/s12281-023-00462-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2023] [Indexed: 06/28/2023]
Abstract
Purpose of Review The true incidence of fungal disease is hampered by conventionally poor diagnostic tests, limited access to advanced diagnostics, and limited surveillance. The availability of serological testing has been available for over two decades and generally underpins the modern diagnosis of the most common forms of fungal disease. This review will focus on technical developments of serological tests for the diagnosis of fungal disease, describing advances in clinical performance when available. Recent Findings Despite their longevity, technical, clinical, and performance limitations remain, and tests specific for fungal pathogens outside the main pathogens are lacking. The availability of LFA and automated systems, capable of running multiple different tests, represents significant developments, but clinical performance data is variable and limited. Summary Fungal serology has significantly advanced the diagnosis of the main fungal infections, with LFA availability increasing accessibility to testing. Combination testing has the potential to overcome performance limitations.
Collapse
Affiliation(s)
- P. Lewis White
- Public Health Wales Mycology Reference Laboratory and Cardiff University Centre for Trials Research/Division of Infection and Immunity, UHW, Heath Park, Cardiff, CF14 4XW UK
| |
Collapse
|