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  5. 台灣地區鮑氏不動桿菌分子分型資料庫及其整合子分子抗藥性機轉之研究
 
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台灣地區鮑氏不動桿菌分子分型資料庫及其整合子分子抗藥性機轉之研究

Other Title
Molecular Fingerprinting Database Establishment of Acinetobacter baumannii in Taiwan and the Study of Antibiotic Resistance of Integron.
Type
thesis
Date Issued
2007-07-06
Author(s)
操雅婷
Advisor
吳瑞裕
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:吳瑞裕
共同指導教授:
口試委員:林俊茂;周正中
中文關鍵字:鮑氏不動桿菌;多重抗藥性;ERIC PCR;REP PCR;Integron;TEM;SHV
Abstract
在抗生素的不當使用之下,已造成抗藥性細菌快速演化並且大量的產生。近來,鮑氏不動桿菌(Acinetobacter baumannii)成為醫院中感染的重要病原菌之一。而具有多重抗藥性的A. baumannii(multidrug-resistant Acinetobacter baumannii; MDR-AB)更是台灣特有並常引起院內的突發性感染,在國內已陸續出現對第三線抗生素imipenem具抗藥性的菌株,是目前院內感染致病菌之中,最難以控制及治療的革蘭氏陰性菌之一。
如何快速並準確鑑定致病菌的類別與分型對於臨床及流行病學是最為迫切的。我們以ERIC PCR及REP PCR兩種分子指紋圖譜技術來進行細菌的分子分型,以完整的數位圖檔建立台灣地區鮑氏不動桿菌標準之分子分型資料庫。
除此,整合子(integron)是近年來被認為是細菌透過水平傳播以獲得新抗藥性基因及抗藥性基因散佈最重要的機制之一。整合子內之基因卡匣(gene cassettes)上可攜帶有各類型的抗藥基因,細菌經由integron主導基因卡匣透過進行特定部位重組作用的方式嵌入或移出integron,造成攜帶之抗藥性基因種類的改變和抗藥性基因的散佈,因此,integron在臨床菌株抗藥性之分佈扮演著重要角色。
廣效性乙內醯胺酶(Extended-spectrum β-lactamase;ESBL)已知對二、三代乙內醯胺具有較強的抗藥性,其中最具代表性的為TEM與SHV兩大類。因此本論文研究亦針對TEM和SHV兩組的基因序列,進行PCR分析,並探討其基因組成。
藉由上述ERIC PCR、REP PCR分子分型的結果、MIC資料庫、integron內抗藥性基因組成、TEM及SHV之變異等完整資料,進行各項比對分析,進而希望能發展出一套能夠提供臨床進行快速準確的菌種鑑別與治療方針的系統平台。
URI
https://203.71.86.71/handle/123456789/12129
https://hdl.handle.net/11296/63ysqs
File(s)
No Thumbnail Available
Name

C0183257.pdf

Size

7.88 MB

Format

Adobe PDF

Checksum

(MD5):3e2c603cf3f8f8550b47759503671b34

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