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Evaluation of Aspergillus and Mucorales specific T-cells and peripheral blood mononuclear cell cytokine signatures as biomarkers of environmental mold exposure.
- Source :
-
International journal of medical microbiology : IJMM [Int J Med Microbiol] 2018 Dec; Vol. 308 (8), pp. 1018-1026. Date of Electronic Publication: 2018 Sep 03. - Publication Year :
- 2018
-
Abstract
- Mold specific T-cells have been described as a supportive biomarker to monitor invasive mycoses and mold exposure. This study comparatively evaluated frequencies and cytokine profiles of Aspergillus fumigatus and Mucorales reactive T-cells depending on environmental mold exposure. Peripheral blood mononuclear cells (PBMCs) obtained from 35 healthy donors were stimulated with mycelial lysates of A. fumigatus and three human pathogenic Mucorales species. CD154 <superscript>+</superscript> specific T-cells were quantified by flow cytometry. In a second cohort of 20 additional donors, flow cytometry was complemented by 13-plex cytokine assays. Mold exposure of the subjects was determined using a previously established questionnaire. Highly exposed subjects exhibited significantly greater CD154 <superscript>+</superscript> A. fumigatus and Mucorales specific naïve and memory T-helper cell frequencies. Significant correlation (r = 0.48 - 0.79) was found between A. fumigatus and Mucorales specific T-cell numbers. Logistic regression analyses revealed that combined analysis of mold specific T-cell frequencies and selected cytokine markers (A. fumigatus: IL-5 and TNF-α, R. arrhizus: IL-17A and IL-13) significantly improves classification performance, resulting in 75-90 % predictive power using 10-fold cross-validation. In conclusion, mold specific T-cell frequencies and their cytokine signatures offer promising potential in the assessment of environmental mold exposure. The cytokines identified in this pilot study should be validated in the clinical setting, e. g. in patients with hypersensitivity pneumonitis.<br /> (Copyright © 2018 Elsevier GmbH. All rights reserved.)
- Subjects :
- Adult
Aspergillosis microbiology
Aspergillus fumigatus growth & development
Biomarkers metabolism
Cohort Studies
Cytokines metabolism
Female
Humans
Leukocytes, Mononuclear microbiology
Male
Mucormycosis microbiology
Rhizomucor growth & development
Rhizopus growth & development
Th1 Cells microbiology
Aspergillosis immunology
Aspergillus fumigatus immunology
Environmental Exposure
Leukocytes, Mononuclear immunology
Rhizomucor immunology
Rhizopus immunology
Th1 Cells immunology
Subjects
Details
- Language :
- English
- ISSN :
- 1618-0607
- Volume :
- 308
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- International journal of medical microbiology : IJMM
- Publication Type :
- Academic Journal
- Accession number :
- 30201279
- Full Text :
- https://doi.org/10.1016/j.ijmm.2018.09.002