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Genotypic diversity and antifungal susceptibility pattern of Candida albicans species isolated from hospitalized paediatric patients with urinary tract infection in Iran
Author(s) -
Gharaghani M.,
RezaeiMatehkolaei A.,
Hardani A.K.,
Zarei Mahmoudabadi A.
Publication year - 2021
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.15006
Subject(s) - genotype , biology , itraconazole , corpus albicans , candida albicans , fluconazole , microbiology and biotechnology , genetic diversity , locus (genetics) , posaconazole , genetic variability , typing , genetics , antifungal , medicine , gene , population , environmental health
Aims The present study aimed to determine the microsatellite length polymorphism (MLP) genotypic patterns and antifungal susceptibility profiles of Candida albicans isolated from patients with candiduria. Methods and Results DNA of 50 C. albicans isolates was used for molecular identification based on the ITS 1 ‐5.8s‐ITS 2 region. MLP assays were performed to amplify three loci (EF3, CDC3 and HIS3), and PCR products were used for fragment analysis. Antifungal susceptibility tests were performed according to CLSI M27 4th ed guidelines. In all, 38 different genotypes were detected with the three polymorphic loci among C. albicans isolates, and only one genotype was homozygous. In comparison to other countries, our genotypes were divided into three clusters, two of which were linked to France and a third of which was linked to Austria. The genetic structures of the 50 C. albicans isolates revealed varied heterozygosity and significant Hardy–Weinberg equilibrium at the EF3 locus. Only one (2%) and four (8%) of isolates showed resistance to fluconazole and itraconazole, respectively. In C. albicans genotype G25, one (2%) of the isolates showed cross‐resistance and non‐wild‐type resistance to posaconazole, itraconazole and fluconazole. Conclusion MLP typing is a useful tool to analyse the genetic structure of C. albicans isolates. High genetic diversity (38 genotypes) was detected in the isolates tested here. Compared to isolates in other countries, the ones from our patients had a clear relationship with French and Austrian isolates. Significance and Impact of the Study Iranian isolates of C. albicans have a distinct genotype and show similarities only with French and Austrian isolates.