| Abstract: |
Summary:-The genus Trichosporon includes anamorphic yeasts with distinct morphological characteristics of budding yeast cells and the true mycelia that disarticulate to form arthroconidia By morphologic, biochemical and genomic data the medically importanTrichosporon species have wide spread natural distribution, being found in soil, water and on plants. They also common commensals inhabitants of the skin and gastrointestinal tract. Some of them are causative agents of diseases in man and animalsTwo of these newly delineated species T. asahii and T. mucoides are associated with systemic infection in human mainly while T. asteroides, T. cutaneum, T. inkin, T. mucoides and T. ovoides have mostly been associated with superficial infectionIn animals Trichosporon species are associated with mastitis, cutaneous infections in cattle and dog, nasal infection in dogs and chronic cystitis in cats.The present study aimed to study the occurrence of Trichosporon species in human, animal and their environment, their identification by morphological characters and Polymerase chain reaction (PCR).In this study, it was found that out of 100 human samples, 16(16%) yeast isolates were obtained.The frequency of isolated yeast from pneumonia, hematological malignancies, onychomycosis and skin lesions ( T. pedis and T. cruris) in were (25%), (30%),( 15%) and (8 % ) respectively.Concerning the isolation of yeast from animals, the frequency of isolaIn this work, the frequency of isolated yeast from milk samples, rectal swabs, nasal swabs, vaginal swabs, skin scrapings, pigeon DROPpings and chicken combs were (30%),(40%), (30%),(35%),( 0.0%),(25%) and (10%), respectivelyIn the current study, the frequency of isolated yeast from water, food and soil in animal environment were (10%), (20%) and (10%), respectively.As regarded to the phenotypic identification of yeasts, it was found that out of 100 human cases, 3 Trichosporon isolates were identified in percentage of (3%). Trichosporon species have been isolated from onychmycosis (2 out of 40) in percentage of (5%) In the present work, 4 Trichosporon isolates with percentage of (3.1%) were obtained from 130 animal samples.
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