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題名 | Characterization of the First Clinical Isolate of Vancomycin-Resistant Enterococcus Faecalis, AH803, in Taiwan=臺灣首株抗萬古黴素Enterococcus faecalis AH803之特性 |
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作者 | 盧章智; 班仁知; 彭成立; 戚偉明; 朱夢麟; 李偉華; Lu, Jang-jih; Ben, Ren-jy; Perng, Cherng-lih; Chi, Wei-ming; Chu, Mong-ling; Lee, Wei-hwa; |
期刊 | 臺灣醫學會雜誌 |
出版日期 | 20000200 |
卷期 | 99:2 2000.02[民89.02] |
頁次 | 頁178-181 |
分類號 | 418.284 |
語文 | eng |
關鍵詞 | 臺灣; 抗萬古黴素; Vancomycin resistance; Enterococcus faecalis AH803; VanB; VanA; Conjugative plasmid; Taiwan; |
英文摘要 | We previously isolated a vancomycin-resistant strain of Enterococcus faecalis, designated AH803, from the sputum of a patient with pneumonia and bacteremia in Taiwan. AH803 was resistant to vancomycin (minimal inhibitory concentration, MIC = 512 g/mL) but susceptible to teicoplanin (MIC = 8 g/mL), and harbored the vanA gene but not the vanB gene. In this study, we further characterized E. faecalis AH803 and the plasmid it was found to contain. DNA from AH803 was analyzed for the presence of vanA a d vanB resistance genes by polymerase chain reaction. The vancomycin resistant phenotype was transferable from AH803 to E. faecalis JH2-2, at a frequency of 4.8 x 10 □. AH803 was also resistant to gentamicin and chloramphenicol, and these antibiotic resistance phenotypes cotransferred with vancomycin resistance. The genes responsible for esistance to all three antibiotics were located on a 42-kb conjugative plasmid (pBL101). This plasmid had the same restriction enzyme digestion patterns as Tn1546, found in pIP8I6 of E. faecalis BM4147. Epidemiologic studies of glycopeptide resistance should perhaps combine phenotypic and genotypic methods, rather than using phenotypic methods alone. |
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