Antifungal Activity of Aureobasidin A in Combination with Fluconazole against Fluconazole-Resistant Candida albicans
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 258
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شناسه ملی سند علمی:
JR_IEM-6-4_005
تاریخ نمایه سازی: 28 تیر 1400
چکیده مقاله:
Background: Aureobasidin A is known as a cyclic depsipeptide antibiotic with toxic effects against yeasts such as Candida spp at low concentration. Combination therapy is used as a conventional treatment for fungal infections, especially drug-resistant cases. The current study aimed to investigate the combined effects of fluconazole and Aureobasidin A on fluconazole-resistant C. albicans isolates using broth microdilution method.
Materials & Methods: Antifungal activity of Aureobasidin A (AbA) compared to fluconazole against C. albicans ATCC ۷۶۶۱۵ strain was determined using the standardized broth microdilution method according to the Clinical and Laboratory Standards Institute (CLSI, document M۲۷-Ed۴) guidelines. The checkerboard method was used to test the combined effects of Aureobasidin A and fluconazole. The synergy, indifference, and antagonism were defined based on the fractional inhibitory concentration values below ۰.۵, ۰.۵-۴, and more than ۴ μg/mL, respectively.
Findings: MIC۵۰ and MIC۹۰ evaluations of Aureobasidin A and fluconazole were done at concentrations of ۰.۲۵-۲ and ۳۲-۶۴ μg/mL against C. glabrata isolates, respectively. The synergy between fluconazole and Aureobasidin A was observed against Candida isolate. A reduced MIC was demonstrated against C. albicans isolate when fluconazole was combined with Aureobasidin A at ۴ to ۰.۱۲ μg/mL concentrations.
Conclusion: The present study findings revealed that Aureobasidin A combined with fluconazole exhibited potent inhibitory effects against fluconazole-resistant C. albicans isolates. Further studies is recommended to investigate the synergistic effects of Aureobasidin A and other antifungal drugs.
کلیدواژه ها:
نویسندگان
Shadi Alimehr
Department of Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran ۱۴۱۱۵-۳۳۱, Iran
Masoomeh Shams-Ghahfarokhi
Department of Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran ۱۴۱۱۵-۳۳۱, Iran
Mehdi Razzaghi Abyaneh
Department of Mycology, Pasteur Institute of Iran, Tehran ۱۳۱۶۴, Iran
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