Ecology of human pathogenic fungi
DOI:
https://doi.org/10.33885/sf.2005.3.961Keywords:
mycosis, pathogenic fungi, ecology, habitatAbstract
One of the main important evolution processes of Kingdom Fungi is the
adaptability to living, not only on the inert organic material, but also in living organisms
as plants, animals and human causing some damage; so these fungi have been
considered as temporal, facultative or definitive parasites. According of the habitat of
these pathogens, they are classified as anthropophilics, zoophilics and geophilics. In
superficial mycosis, the fungi have the possibility to be anthropophilics, as Trichophyton
rubrum, T. tonsurans, and Epidermophyton floccosum; zoophilics as Microsporum
canis and T. verrucosum; and geophilics as M. gypseum and M. nanum. The
etiological agents of subcutaneous mycosis, as Sporothrix schenckii (sporotrichosis),
Fonsecaea pedrosoi (chromoblastomycosis), and the systemic fungi as Histoplasma
capsulatum (histoplasmosis) and Coccidioides immitis, posadasii
(coccidioidomycosis) are principally geophilics. Fungi causing opportunistic infections
as Candida, Cryptococcus and Mucorales can be isolated from any of the three
habitats. One species of fungus can be found in two or more habitats and one habitat
can contain different pathogenic species. The mechanisms of mycotic infections and
their epidemiological importance in these knowledge are mentioned.
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