方啟泰2006-07-262018-07-112006-07-262018-07-112005http://ntur.lib.ntu.edu.tw//handle/246246/23688克雷伯氏肺炎桿菌是一種天生對 ampicllin 及其他乙內醯胺類(beta-lactam ) 抗生素具有抗藥性的臨床上重要的致病 菌。經由建構克雷伯氏肺炎桿菌菌株的 λ -ZAP II phage 表現基因庫,並且篩選具有 beta-lactam 抗藥性的轉型株,我們發現 SHV-1a (14/24 )及SHV-1 (7/24 )是使台 灣的社區性克雷伯氏肺炎桿菌具有抗 ampicllin 能力的主要基因。侵襲性菌株 (n=12 )與非侵襲性菌株(n=12 )在 beta-lactamase 基因型上並無顯著差別。某 些台灣的社區性菌株也帶有SHV-27 (1/24 )、SHV-41 (1/24 )及TEM-116 (24/24 )。此三者先前被報稱為屬於 ESBL ,但經轉殖實驗證明並非如此。在造 成院內感染的ESBL 菌株方面,我們發現 TEM-1b (23/48 )及SHV-12 (16/48 )是在 台灣最常見的ESBL 基因型,其次則為 CTX-M3 (10/48 )。但48 株ESBL 菌株中 有9 株的基因型不屬於已知的SHV 、TEM 及CTX-M 。Klebsiella pneumoniae is an important pathogen inherently resists to ampicllin and sometimes other beta-lactams. Through constructing λ -ZAP II phage expression libraries of K. pneumoniae genome and screening beta-lactam-resistant transformants, we found SHV-1a (14/24 )andSHV-1 (7/24 ) are the most common genetic basis of ampicillin resistance in community-acquired K. pneumoniae strains in Taiwan. There is no significant difference in the beta-lactamase genotypes between strains causing primary liver abscess (n=12 )and strains did not cause primary liver abscess (n=12 ). SHV-27 (1/24 ), SHV-41 (1/24 )and TEM-116 (24/24 ), which have been reported as encoding extended-spectrum beta- lactamase (ESBL) but not confirmed in the present study, were also identified in some community-acquired strains. In contrast, TEM-1b (23/48 )and SHV-12 (16/48 )are the predominant ESBL genotypes in nosocomial strains, followed by CTX-M3 (10/48 ). Nine ESBL strains did not harbor known SHV, TEM or CTX-M genotypes.application/pdf194068 bytesapplication/pdfzh-TW國立臺灣大學醫學院內科克雷伯氏肺炎桿菌抗藥性乙內醯胺類藥物Drug ResistanceBeta-lactamasesKlebsiella pneumoniae以表現基因庫系統性選殖台灣克雷伯氏肺炎桿菌對乙內醯胺類藥物的抗藥性基因Systemic Cloning of Beta-lactams Resistance Genes in Klebsiella pneumoniae Using Expression DNA Libraryreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/23688/1/932314B002071.pdf