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Detection of microsatellite instability in gastric cancer and dysplasia tissue in Lanzhou province of China
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 15
- DOI:
- 10.3969/j.issn.1009-3079.2009.15.008
- Key Word:
- 胃癌;微卫星不稳定性;聚合酶链式反应-单链构象多态性分析
Abstract： 目的: 研究兰州地区胃癌与微卫星不稳定性(microsatellite instability, MSI)的关系, 从基因组不稳定的角度探讨河西地区胃癌高发可能的发病机制.方法: 采用苯酚-氯仿法分别提取43例胃癌和21例胃异型增生及相应对照组织DNA. 应用银染PCR-SSCP检测技术检测Bat25、Bat26、D2S123、D5S346及D17S250微卫星位点, 并对胃癌及癌前病变组织中MSI进行分析.结果: 43例胃癌患者中MSI检出28例, 检出率为65.1%. 其中MSI-H为8例, MSI-L 20例, 分别为28.6%和71.4%;21例胃异型增生组织中MSI检出6例, 检出率为28.6%. 其中MSI-H 2例占33.3%;MSI-L 4例占66.7%.结论: 兰州地区胃癌患者中MSI检出率很高,MSI可能是该地区胃癌高发的另一种分子致癌机制, 并可以作为胃癌诊断的一个较为敏感的指标.
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