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  5. 尿苷雙磷酸葡萄糖醛酸基轉移酶1A7(UGT1A7)基因型與肺癌之關聯研究
 
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尿苷雙磷酸葡萄糖醛酸基轉移酶1A7(UGT1A7)基因型與肺癌之關聯研究

Other Title
The Correlation between UDP-Glucuronosyltransferase 1A7 (UGT1A7) Genotypes and Lung Cancer
Type
thesis
Date Issued
2009-06-18
Author(s)
黃薇伊
Advisor
陳香吟
Subjects
系所名稱:藥學研究所
Description
學位別:碩士
語文別:中文
指導教授:陳香吟
共同指導教授:
口試委員:方嘉佑;李仁愛
中文關鍵字:尿苷雙磷酸葡萄糖醛酸基轉移酶1A7;基因型;肺癌
Abstract
肺癌是台灣地區癌症死亡原因之首。活化的致癌物質在體內使得某些重要致癌基因發生突變而失去正常調控, 最終形成肺癌。UGT1A7 (UDP-glucuronosyltransferases1A7) 分布於人體肝臟外的組織,負責許多肺癌致癌物質的代謝解毒。UGT1A7 具有基因多型性,許多研究顯示帶有基因變異的UGT1A7酵素代謝能力較野生型酵素差,因此被認為是造成癌症的可能危險因子。本研究的目的在於探討UGT1A7 基因多型性與台灣族群中肺癌的關係。此外,由於肺癌相關致癌基因KRAS 之突變與抽菸高度相關,我們也進一步假設UGT1A7 基因多
型會與發生此突變的風險有關。本研究收納210 位肺癌病人及210 位依性別年齡配對之健康對照組,以PCR-RFLP 方法分析其UGT1A7 基因多型性,另外可取得腫瘤組織DNA 的病人亦同時檢測KRAS 基因codon 12 與13 位置的突變。結果發現Intermediate-activity (UGT1A7*1/*2, UGT1A7*1/*3, UGT1A7*1/*4, UGT1A7*2/*2,
UGT1A7*2/*3)和Low-activity (UGT1A7*3/*3, UGT1A7*4/*4) 兩種代謝能力較低之UGT1A7 基因表現型為肺癌的可能危險因子,危險對比值分別為1.799, 95% CI:1.178-2.748, p=0.006 及 3.333, 95% CI: 1.192-9.322, p=0.032。此增加之罹癌風險在男性有顯著統計學上差異,但在女性則無此發現。另外,上述代謝能力較低之UGT1A7 基因表現型與EGFR 原型之肺癌相關,而與帶有EGFR 突變之肺癌無關。本研究中並未發現UGT1A7 基因多型性與KRAS 基因突變的發生具有顯著之相關性。本研究結果顯示代謝能力較低之UGT1A7 基因表現型為肺癌的可能危險因子。未來應進一步研究受此酵素能力缺損影響的易感族群及其腫瘤上的分子特徵,並且探索其他可能造成致癌基因突變的危險因子,以期對肺癌致病機轉能有更深的認識。
URI
https://203.71.86.71/handle/123456789/13052
https://hdl.handle.net/11296/e4478s
File(s)
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Name

C0191157.pdf

Size

8.9 MB

Format

Adobe PDF

Checksum

(MD5):9591008fe2a770b564574f1344ae2c89

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