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  5. MnSOD、Catalase、UCP2、hOGG1、COMT和GSTM1基因多型性與子宮內膜異位症相關性之研究
 
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MnSOD、Catalase、UCP2、hOGG1、COMT和GSTM1基因多型性與子宮內膜異位症相關性之研究

Other Title
MnSOD, Catalase, UCP2, hOGG1, COMT and GSTM1 Polymorphisms in Endometriosis
Type
thesis
Date Issued
2006
Author(s)
江佩陵
Advisor
高淑慧
Subjects
系所名稱:醫學檢驗生物技術學研究所
Abstract
子宮內膜異位症( Endometriosis )是指原應生長在子宮內膜的組織轉而生長在身體的其他部位,到目前為止其真正的致病機轉並未清楚明瞭。近來許多研究證實基因的變異和氧化壓力都與子宮內膜異位症的發展形成相關。然而體內約85-90%活性氧化物質(reactive oxygen species, ROS)主要來源是經由粒線體的電子傳遞鏈產生。隨著氧化壓力(oxidative stress)的增加,粒線體內的抗氧化機制對於保護組織細胞避免產生氧化性傷害有著非常重要的角色。因氧化壓力的產生與粒線體抗氧化功能缺損及粒線體基因完整性( mitochondrial genome integrity )有關。本研究收集了122個不孕婦女檢體(其中67位來自病人的血液檢體以及55位病人中取得的子宮內膜組織樣本)及48個正常生育婦女血液檢體,我們將檢體分為三組,分別為endometriotic group(group A)、all female factor infertile group(group B)及normal fertile control(group C)組。探討manganese superoxide dismutase (MnSOD)、catalase(CAT)、uncoupling protein 2 ( UCP2 )、human 8-oxoguanine glycosylase 1(hOGG1)、catechol-O-methyltransferase(COMT)與glutathione S-transferase M1(GSTM1)的基因多型性及mitochondrial DNA(mtDNA)T8993G突變與子宮內膜異位症的相關性,並分析這些基因的基因多型性( gene polymorphism )與女性不孕的相關性。研究利用聚合?連鎖反應(polymerase chain reaction, PCR)、Restriction Fragment Length Polymorphism(RFLP)的方法確認基因型態,並以HPLC-ECD分析8-OHdG含量及Long-PCR分析mtDNA斷損突變(4977 bp and 5756 bp),並將結果以卡方檢定運算其是否具有統計上的顯著性差異。結果顯示group A和group B與group C比較後有高比率的MnSOD CT+TT type (分別為25.1%, 33.6%及16.7%) ( p=0.02, group A vs. group C; p=0.029, group B vs. group C )。並且發現catalase TT type僅存於group A ( p=0.029 )。此外分析比較group A和group B與group C 其hOGG1的基因多型性有低比率CC type (分別為15.7% ,15.6%及31.3%) ( p=0.034, group A vs. group C ; p=0.021, group B vs. group C ),且帶有G allele的組織其對8-OHdG修復能力較C allele差,我們進而分析罹患子宮內膜異位患者的病灶處有大量8-OHdG,並帶有CC基因型相較於CG+GG基因型的8-OHdG含量(分別為0.39±0.11及0.76±0.24 8-OHdG/105 dG)有顯著差異( p=0.01 )。在本研究中並無發現到 UCP2、COMTLL及GSTM1 null type基因型在子宮內膜異位患者中有顯著差異,且也無發現有任何mtDNA T8993G突變。綜合以上結果,我們研究發現hOGG1、MnSOD、catalase與子宮內膜異位症有相關性,由此可推論粒線體內的氧化壓力與子宮內膜異位症及女性因素的不孕症確實有關。
URI
https://203.71.86.71/handle/123456789/12418
File(s)
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C0178790.pdf

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10.48 MB

Format

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Checksum

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