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Clinical and microbiological characteristics of Cryptococcus gattii isolated from 7 hospitals in China.

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机构: [1]Medical laboratory center, First Medical Center of Chinese PLA General Hospital & Medical School of Chinese PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China. [2]Department of Clinical Laboratory, the First Hospital of Qinhuangdao, Qinhuangdao, 066000, China. [3]Department of Clinical Laboratory, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China. [4]Department of Respiratory and Critical Care Medicine, the Affiliated Beijing Shijitan Hospital of Capital Medical University, Beijing, 100038, China. [5]Department of Clinical Laboratory, Hainan General Hospital, Haikou, 570311, China. [6]Medical laboratory center, First Medical Center of Chinese PLA General Hospital & Medical School of Chinese PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China. shendx301@sina.com.
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Infection, even outbreak, caused by Cryptococcus gattii (C. gattii) has been reported in Canada and the United States, but there were sparsely-reported cases of C. gattii in China. Our interest in occurrence, clinical manifestation, laboratory identification and molecular characterization of Chinese C. gattii strains leads us to this research. Out of 254 clinical isolates, initially identified as Cryptococcus neoformans (C. neoformans), eight strains were re-identified as C. gattii. Multi-locus sequence typing (MLST) showed genotype VGI accounted for the most (6 / 8), the other two strains were genotype VGII (VGIIa and VGIIb respectively) with 3 specific spectra of molecular weight about 4342, 8686, 9611 Da by MALDI-TOF MS. The minimal inhibitory concentrations (MICs) of Fluconazole with Yeast one was 2~4 times higher than that with ATB fungus 3 and MICs of antifungal agents against VGII strains were higher than against VGI strains. Comparative proteome analysis showed that 329 and 180 proteins were highly expressed by C. gattii VGI and VGII respectively. The enrichment of differentially expressed proteins was directed to Golgi complex. Infection by C. gattii in China occurred sparsely. Genotype VGI was predominant but VGII was more resistant to antifungal agents. There was significant difference in protein expression profile between isolates of VGI and VGII C. gattii.

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出版当年[2019]版:
大类 | 3 区 生物
小类 | 3 区 微生物学
最新[2025]版:
大类 | 2 区 生物学
小类 | 3 区 微生物学
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Q2 MICROBIOLOGY
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Q2 MICROBIOLOGY

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第一作者机构: [1]Medical laboratory center, First Medical Center of Chinese PLA General Hospital & Medical School of Chinese PLA, No.28 Fuxing Road, Haidian District, Beijing, 100853, China. [2]Department of Clinical Laboratory, the First Hospital of Qinhuangdao, Qinhuangdao, 066000, China.
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