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  5. 從臨床檢體檢測結核分枝桿菌群之分子鑑定方法的評估
 
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從臨床檢體檢測結核分枝桿菌群之分子鑑定方法的評估

Other Title
Evaluation of molecular identification methods for detection of Mycobacterium tuberculosis complex from clinical specimen
Type
thesis
Date Issued
2013-07-23
Author(s)
潘瀅如
Advisor
吳雪霞
Subjects
系所名稱:醫學檢驗暨生物技術學系
Description
學位別:碩士
語文別:中文
指導教授:吳雪霞
共同指導教授:
口試委員:謝文祥;楊沂淵
中文關鍵字:臨床檢體;結核分枝桿菌群;分子鑑定方法
Abstract
結核病是目前普遍存在於世界的疾病,尤其是未開發及開發中國家的慢性傳染病。近年來,結核病似有再次復發流行的趨勢,對於全球的公共衛生是個急迫性的問題。目前結核病的診斷,主要依靠於臨床檢體中培養出Mycobacterium tuberculosis,但是由於Mycobacterium tuberculosis生長緩慢,細菌培養通常需要耗費4~6週的時間,延遲結核病的診斷及治療。近年來,分子鑑定技術的發展應用,即可大符縮短檢測時間,廣泛使用於分枝桿菌屬的診斷。
本研究自2011年11月至2013年4月,由37病患總共收集108個痰液檢體,將所收集到的病患檢體,經消化去污染後,一方面進行分枝桿菌屬的培養及抗酸性染色,同時將檢體進行 mRNA以及DNA的抽取,將mRNA先反轉錄成cDNA,使用Cobas TaqMan MTB test,利用Real time PCR的方法,偵測結核分枝桿菌群(Mycobacterium tuberculosis complex),將所得結果分別與培養結果作比較。研究結果DNA Real time PCR 此方法的Sensitivity、Specificity、Positive predictive value(PPV)、Negative predictive value(NPV)、Prevalence及Efficiency分別為90.00%、79.17%、84.38%、86.36%、55.56%及85.19%。mRNA RT-Real time PCR此方法的Sensitivity、Specificity、Positive predictive value(PPV)、Negative predictive value(NPV)、Prevalence及Efficiency分別為96.67%、79.17%、85.29%、95.00%、55.56%和88.89%。根據統計結果顯示mRNA RT-Real time PCR比DNA Real time PCR有較高的敏感性,與細菌培養的結果一致性也較高(88.89% V.S. 85.19%)。所以此次研究的結論,mRNA RT-Real time PCR能更有效縮短鑑定時間且準確地從臨床檢體檢測Mycobacterium tuberculosis complex,能夠作為一個有效的分子鑑定工具。
URI
https://203.71.86.71/handle/123456789/13993

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