Suitability of hair type for dermatophytes perforation and differential diagnosis of T. mentagrophytes from T. verrucosum

Summary Most of the dermatophyte species have the ability to perforate hair structure and consume its contents of keratin through secretion of keratinase enzyme. Two clinical isolated species of dermatophytes were diagnosed as Trichophyton mentagrophytes var. granulosum and Trichophyton verrucosum....

Full description

Saved in:
Bibliographic Details
Published in:Mycoses 2016-04, Vol.59 (4), p.247-252
Main Authors: AL-Janabi, Ali Abdul Hussein S., AI-Tememi, Nabaa N., AI-Shammari, Rabab A., AI-Assadi, Abdul Hadi A.
Format: Article
Language:English
Subjects:
Animals
Cattle
Child, Preschool
cow
dermatophytes
Diagnosis, Differential
Hair - metabolism
Hair - microbiology
hair perforating
human hair
Humans
Male
Microbiological Techniques - methods
Middle Aged
rabbit
Rabbits
rat
Rats
Tinea - diagnosis
Tinea - microbiology
Trichophyton - classification
Trichophyton - isolation & purification
Trichophyton - metabolism
Trichophyton mentagrophytes
Trichophyton verrucosum
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Summary Most of the dermatophyte species have the ability to perforate hair structure and consume its contents of keratin through secretion of keratinase enzyme. Two clinical isolated species of dermatophytes were diagnosed as Trichophyton mentagrophytes var. granulosum and Trichophyton verrucosum. To determine the perforation ability, the isolated fungi were incubated with the hair of four different animals (rabbit, rat, cow and cat) and human hairs with three different colours (black, albino and bleached yellow) for different periods. Variable perforating ability of T. mentagrophytes was shown in rat hair and all types of human hair after 15 days, while other mammalian hairs exhibited resistance to this fungal activity. On the other hand, T. verrucosum was revealed a slow perforating ability, which needed a long time (60 days) for most of tested hairs. Perforation of human black hair could be considered a diagnostic test for differentiation between T. mentagrophytes and T. verrucosum. In conclusion, the treated or untreated human hair was considered more suitable to use as a source of keratin for the growth of dermatophytes than animal hairs. The human black hair was a best type of hair to use in the perforating test for differentiation between T. mentagrophytes and T. verrucosum.
ISSN:0933-7407
1439-0507
DOI:10.1111/myc.12458