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首页> 外文期刊>Archives of microbiology >Yeasts isolated from Algerian infants's feces revealed a burden of Candida albicans species, non-albicans Candida species and Saccharomyces cerevisiae
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Yeasts isolated from Algerian infants's feces revealed a burden of Candida albicans species, non-albicans Candida species and Saccharomyces cerevisiae

机译：从阿尔及利亚婴儿粪便中分离出来的酵母显示出白色念珠菌，非白色念珠菌和酿酒酵母的负担

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摘要

This study aimed at showing the yeast diversity in feces of Algerian infants, aged between 1 and 24 months, hospitalized at Bejaia hospital (northeast side of the country). Thus, 20 colonies with yeast characteristics were isolated and identified using biochemical (ID32C Api system) and molecular (sequencing of ITS1-5.8S-ITS2 region) methods. Almost all colonies isolated (19 strains) were identified as Candida spp., with predominance of Candida albicans species, and one strain was identified as Saccharomyces cerevisiae. Screening of strains with inhibitory activities unveiled the potential of Candida parapsilosis P48L1 and Candida albicans P51L1 to inhibit the growth of Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 25923. Further studies performed with these two Candida strains revealed their susceptibility to clinically used antifungal compounds and were then characterized for their cytotoxicity and hemolytic properties. On the other hand, Saccharomyces cerevisiae P9L1 isolated as well in this study was shown to be devoid of antagonism but resulted safe and overall usable as probiotic.
机译：这项研究旨在显示在Bejaia医院（该国东北侧）住院的1至24个月大的阿尔及利亚婴儿粪便中的酵母多样性。因此，使用生化（ID32C Api系统）和分子（ITS1-5.8S-ITS2区域测序）方法分离并鉴定了20个具有酵母特征的菌落。几乎所有分离出的菌落（19个菌株）都被鉴定为念珠菌，以白色念珠菌种为优势，其中一个菌株被鉴定为酿酒酵母（Saccharomyces cerevisiae）。具有抑制活性的菌株的筛选揭示了假丝酵母念珠菌P48L1和白色念珠菌P51L1抑制大肠杆菌ATCC 25922和金黄色葡萄球菌ATCC 25923的生长。对这两个念珠菌菌株进行的进一步研究表明它们对临床使用的抗真菌化合物敏感，然后表征其细胞毒性和溶血特性。另一方面，在本研究中分离出的酿酒酵母P9L1也显示出无拮抗作用，但可安全，全面地用作益生菌。

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