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    • 线粒体DNA D-环区单核苷酸多态性与胃癌发病年龄的关系研究

    WANG Yingnan,WU Chensi,ZHAO Yue,ZHANG Fengbin,ZHANG Shaochen,GUO Zhanjun,ZHANG Ruixing

    Chinese General Practice（2022）

    河北医科大学第四医院

    Cited 0|Views8
    Abstract
    背景 胃癌发病率和死亡率长期居高不下,防控形势严峻,且发病年龄逐渐年轻化,但目前关于胃癌发病年龄预测因素的研究报道较少.目的 探讨线粒体DNA D-环区(D-Loop区)单核苷酸多态性(SNPs)与胃癌患者发病年龄之间的关系.方法 选取2007年7月至2008年12月在河北医科大学第四医院消化内科经胃镜病理证实的胃癌患者150例为研究对象,提取胃癌患者外周血中的线粒体DNA,采用聚合酶链反应(PCR)扩增目的片段,并进行线粒体DNA D-Loop区测序.采用Kaplan-Meier法绘制胃癌患者发病年龄的生存曲线,比较采用Log-rank检验;采用多因素Cox比例风险回归分析探究胃癌患者发病年龄的影响因素.结果 不同分化程度患者发病年龄比较,差异有统计学意义(P<0.05).Log-rank检验结果显示,153G基因型患者的发病年龄〔(48.0±5.3)岁〕早于153A基因型患者〔(60.1±0.8)岁〕(χ2=7.757,P=0.005).多因素Cox比例风险回归分析结果显示,线粒体DNA D-Loop区SNPs位点153A/G是预测胃癌患者发病年龄的影响因素〔HR=0.323,95％CI(0.140,0.745),P=0.008〕.结论 线粒体DNA D-Loop区SNPs位点153A/G或许可以作为胃癌发病年龄的新型预测指标,通过分析线粒体DNA D-Loop区的多态性,可以帮助识别早发的胃癌患者.
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    Key words
    stomach neoplasms|dna, mitochondrial|d-loop|polymorphism, single nucleotide|age of onset|sex factors
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