Impact of Candida spp. metabolites on human skin fibroblasts
- Authors: Ignatova N.I.1, Zaslavskaya M.I.1, Alexandrova N.A.1, Orlova O.E.2, Melnikov V.G.3
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Affiliations:
- Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation
- City Clinical Hospital No. 67 named after L.A. Vorokhobov
- Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky of Rospotrebnadzor
- Issue: Vol 12, No 2 (2022)
- Pages: 381-385
- Section: SHORT COMMUNICATIONS
- URL: https://journal-vniispk.ru/2220-7619/article/view/119159
- DOI: https://doi.org/10.15789/2220-7619-IOC-1795
- ID: 119159
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Abstract
Micromycetes spp. have been increasingly involved in the etiology of infectious diseases guiding to consider them not as important as bacterial and viral pathogens. Nowadays, a lot of severe forms of candidiasis are caused by C. auris, C. albicans, whereas C. glabrata and C. krusei are of similar importance. Members of these species were selected to investigate related metabolite action on human skin fibroblasts. Candida spp. being continuously found on the epithelium and mucosal membranes resulting in to sustained interaction between microbiota and human cells. Potential to produce metabolites containing pathogenicity factors is one of the crucial events for transition to invasive candidiasis, wherein human epithelial cells build up the front line of defense barrier preventing Candida spp. invasion into deeper host tissues. The study was aimed at assessing data on metabolite effects derived from epidemiologically relevant Candida spp. on primary human skin fibroblast culture in vitro. In particular, there were analyzed Candida spp. metabolites acting on fibroblast monolayer integrity and viability in cell suspension. It was found that Candida spp. metabolites might directly cause fibroblast death so that biocidal activity was exhibited as a strain-specific feature. A direct biocidity against dermal cells was more typical for strains C. glabrata и C. krusei, less pronounced for C. albicans and very weak for C. auris. In addition, a mechanism for secretory product-related biocidal activity derived from various Candida spp. on dermal fibroblasts in vitro revealed that it resulted in fibroblasts death 1 hour after exposure that peaked at 3 hrs. Cell death was equally proceeded via apoptosis and necrosis. Of note, biocidal effect of fungal metabolites showed no correlation with Candida-related potential to cleave intercellular junctions. It was found that C. auris metabolites showing weak biocidity against some fibroblasts simultaneously resulted in more marked disruption of cell monolayer compared to other Candida spp. Perhaps, it is just a feature of C. auris that might account for its higher invasiveness potential allowing to destroy tight human tissues more effectively compared to other Candida spp.
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##article.viewOnOriginalSite##About the authors
Nadezhda I. Ignatova
Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation
Email: n.i.evteeva@gmail.com
ORCID iD: 0000-0002-4570-9342
PhD (Biology), Associate Professor, Department of Epidemiology, Microbiology and Evidence-Based Medicine
Russian Federation, 603005, Nizhny Novgorod, Gagarina pr., 70M. I. Zaslavskaya
Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation
Email: maya.zaslav@gmail.com
ORCID iD: 0000-0003-1895-0699
PhD, MD (Biology), Associate Professor, Professor, Department of Epidemiology, Microbiology and Evidence-Based Medicine
Russian Federation, 603005, Nizhny Novgorod, Gagarina pr., 70N. A. Alexandrova
Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation
Email: natalyuskova@rambler.ru
ORCID iD: 0000-0003-4845-8056
PhD (Biology), Senior Lecturer, Department of Epidemiology, Microbiology and Evidence-Based Medicine
Russian Federation, 603005, Nizhny Novgorod, Gagarina pr., 70O. E. Orlova
City Clinical Hospital No. 67 named after L.A. Vorokhobov
Email: o.e.orlova@yandex.ru
PhD (Biology), Head of the Laboratory of Microbiology
Russian Federation, MoscowV. G. Melnikov
Moscow Research Institute of Epidemiology and Microbiology named after G.N. Gabrichevsky of Rospotrebnadzor
Author for correspondence.
Email: goutch@mail.ru
PhD (Medicine), Associate Professor, Leading Researcher
Russian Federation, MoscowReferences
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