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Sex Transm Infect. 2008 Apr;84(2):103-6. Epub 2007 Oct 30.

Genotype distribution of Candida albicans strains associated with different conditions of vulvovaginal candidiasis, as revealed by microsatellite typing.

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  • 1Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing 100034, China.



To compare genotypes of Candida albicans strains causing different conditions of vulvovaginal candidiasis (VVC) in Chinese women.


C albicans strains were isolated from the vaginas of patients with different conditions of VVC. The genotypes of the strains were investigated based on single-strand conformation polymorphisms (SSCP) of the PCR amplified microsatellite locus CAI.


A total of 93 independent C albicans strains was isolated from patients with mild-to-moderate (n = 37) or severe (n = 56) VVC. Thirty of the patients enrolled suffered recurrent VVC. Twenty-six distinct genotypes tentatively designated as A to Z were identified from the 93 C albicans strains compared on the basis of their CAI SSCP patterns. The majority (72.0%) of the strains possessed genotypes A to D, which were similar in the CAI SSCP profiles and were designated as the dominant genotypes. The overall frequencies of the four dominant genotypes were 87.5% (49/56) and 48.6% (18/37; p<0.001) in the C albicans strains from patients with severe and mild-to-moderate VVC, respectively. The strains with the dominant genotypes occupied 83.3% (25/30) and 66.7% (42/63; p = 0.094) in the C albicans strains from patients with recurrent VVC and sporadic VVC, respectively.


The frequency of C albicans strains with the dominant genotypes (A to D) from patients with severe VVC was significantly higher than that from patients with mild-to-moderate VVC, implying that the CAI genotype distribution of C albicans strains correlates with the severity of VVC.

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