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Regulation of Erg3, Erg6, and Erg11 Genes in Antifungal-Resistant Isolates of Candida Parapsilosis Publisher Pubmed



Lotfali E1 ; Ghajari A1 ; Kordbacheh P2 ; Zaini F2 ; Mirhendi H3 ; Mohammadi R3 ; Noorbakhsh F4 ; Rezaie S5
Authors
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Authors Affiliations
  1. 1. Department of Medical Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Medical Parasitology and Mycology, School of Medicine, Infectious Disease and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Biology, Faculty of Science, Islamic Azad University, Varamin-Pishva, Iran
  5. 5. Division of Molecular Biology, Department of Medical Mycology and Parasitology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Iranian Biomedical Journal Published:2017


Abstract

Background: Candida parapsilosis is one of the five common strains of yeasts involved in invasive candidiasis. The expression analysis of sterol biosynthesis pathway genes, which are associated with resistance, can assist the better understanding of antifungal resistance mechanisms. Methods: The antifungal susceptibility of 120 clinical C. parapsilosis isolates was examined. The changes in the gene expression related to resistance were analyzed. Results: Eight strains were resistant to fluconazole (FLC), itraconazole (ITC), and amphotericin B (AMB). The regulation variations included increased mRNA levels of ERG3, ERG6, and ERG11 and decreased mRNA levels of ERG3 and ERG6 in response to FLC. ERG11 mRNA level increases in response to ITC and AMB. Conclusion: The mechanism of resistance to azoles in C. parapsilosis is very similar to C. Albicans. This feature may help to design new treatment strategy for candidiasis. © 2017, Pasteur Institute of Iran. All rights reserved.
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