Distribution of Malassezia species in patients with pityriasis versicolor in Northern Iran.

Abstract:

PURPOSE:Malassezia yeasts are globally distributed agents of pityriasis versicolor and are implicated in the pathogenesis of seborrhoeic and atopic dermatitis. The aim of this study is to identify the Malassezia species obtained from pityriasis versicolor patients, using morphological, biochemical, physiological as well as Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) methods. MATERIALS AND METHODS:The identification of Malassezia species is performed according to microscopic features and physiological characteristics, including catalase reaction and Tween assimilation tests. The DNA is extracted from cultured Malassezia using the glass bead, phenol-chloroform method. The internal transcribed spacer 1(ITS1) region is amplified and there is restricted digestion of the PCR products with two enzymes Cfo I and Bst F5I. RESULTS:The most commonly isolated species is M. globosa (47.6%). RFLP analysis of the PCR products of the ITS1 region is in complete agreement with those from the DNA sequences of the internal transcribed spacer (ITS) 1 region and the biochemical tests. CONCLUSION:Based on the findings of this study, it can be concluded that PCR-RFLP is a relatively simple and quick method, completely comparable to the routine methods used for Malassezia identification.

journal_name

Indian J Med Microbiol

authors

Shokohi T,Afshar P,Barzgar A

doi

10.4103/0255-0857.55445

subject

Has Abstract

pub_date

2009-10-01 00:00:00

pages

321-4

issue

4

eissn

0255-0857

issn

1998-3646

pii

IndianJMedMicrobiol_2009_27_4_321_55445

journal_volume

27

pub_type

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