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- W2015646876 abstract "This study was undertaken to characterize the mechanism(s) of azole resistance in clinical isolates of Candida albicans collected in Shanghai, China, focusing on the role of efflux pumps, target enzymes of fluconazole (Erg11), respiratory status and the ergosterol biosynthetic pathway. Clinical isolates of C. albicans (n = 30) were collected from 30 different non-HIV-infected patients in four hospitals in Shanghai. All 30 C. albicans isolates were susceptible to amphotericin B and 5-fluorocytosine. Twelve C. albicans isolates showed resistance to at least one type of triazole antifungal. Flow cytometry analysis of rhodamine 6G efflux showed that azole-resistant isolates had greater efflux pump activity, which was consistent with elevated levels of CDR1 and CDR2 genes that code for ABC efflux pumps. However, we did not observe increased expression of ERG11 and MDR1 or respiratory deficiency. Several mutations of ERG11 and TAC1 genes were detected. The F964Y mutation in the TAC1 gene was identified for the first time. Two main sterols, ergosterol and lanosterol, were identified by GC–MS chromatogram, and no missense mutations were found in ERG3. Furthermore, seven amino acid substitutions in ERG11, A114S, Y132H, Y132F, K143Q, K143R, Y257H and G448E were found, by Type II spectral quantitative analysis, to contribute to low affinity binding between Erg11 and fluconazole." @default.
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- W2015646876 date "2015-04-01" @default.
- W2015646876 modified "2023-10-18" @default.
- W2015646876 title "Mechanisms of azole resistance in Candida albicans clinical isolates from Shanghai, China" @default.
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- W2015646876 doi "https://doi.org/10.1016/j.resmic.2015.02.009" @default.
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