The first isolate of Candida auris in China: clinical and biological aspects.

The first isolate of Candida auris in China: clinical and biological aspects.
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中国第一株耳念珠菌分离株:临床和生物学方面

DOI:
10.1038/s41426-018-0095-0
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发表时间:
2018-05-18
影响因子:
13.2
通讯作者:
Huang G
Huang G
中科院分区:
医学2区
文献类型:
--
作者:
Wang X;Bing J;Zheng Q;Zhang F;Liu J;Yue H;Tao L;Du H;Wang Y;Wang H;Huang G

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摘要耳念珠菌是一种具有多重耐药性的致病真菌,具有较高的死亡率。这种真菌于2009年在日本首次被描述,并已在五大洲至少18个国家报告。本研究首次报道了分离到的C.从中国一名住院妇女的支气管肺泡灌洗液(BALF)中提取耳内分泌物。有趣的是,该分离株对所有测试的抗真菌药物敏感,包括阿替霉素B、氟康唑和卡泊芬净。硫酸铜(CuSO4)对该真菌的生长也具有有效的抑制作用。在不同培养条件下,C.耳表现出多种形态学表型,包括圆形至卵形、细长和假菌丝样形式。高浓度的氯化钠诱导形成假菌丝样形式。我们进一步证明了C.在小鼠系统性和无脊椎动物大蜡螟模型中,耳念珠菌的毒力远低于白色念珠菌。
Abstract The emerging human fungal pathogen Candida auris has been recognized as a multidrug resistant species and is associated with high mortality. This fungus was first described in Japan in 2009 and has been reported in at least 18 countries on five continents. In this study, we report the first isolate of C. auris from the bronchoalveolar lavage fluid (BALF) of a hospitalized woman in China. Interestingly, this isolate is susceptible to all tested antifungals including amphotericin B, fluconazole, and caspofungin. Copper sulfate (CuSO4) also has a potent inhibitory effect on the growth of this fungus. Under different culture conditions, C. auris exhibits multiple morphological phenotypes including round-to-ovoid, elongated, and pseudohyphal-like forms. High concentrations of sodium chloride induce the formation of a pseudohyphal-like form. We further demonstrate that C. auris is much less virulent than Candida albicans in both mouse systemic and invertebrate Galleria mellonella models.
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