摘要： 为研究洛阳市汉族群体ADH2和ALDH2基因的多态性分布，应用聚合酶链反应-扩增片段长度多态性（PCR-APLP）分析法，对ADH2基因外显子3和ALDH2基因外显子12的特定片段同时进行特异性扩增，用非变性的聚丙烯酰胺垂直凝胶电泳和DNA银染方法判定基因型。ADH2*1和ADH2*2等位基因频率分别为42.86%和57.14%，ADH2*1/*1、*1/*2和*2/*2的基因型频率分别为22.86%、40.00%和37.14%；ALDH2*1和ALDH2*2的等位基因频率分别为85.24%和14.76%，ALDH2*1/*1、*1/*2和*2/*2的基因型频率分别为71.43%、27.62%和0.95%。洛阳市汉族群体ADH2和ALDH2的等位基因频率和基因型频率不同于台湾人和上海人，ALDH2*1/*1基因型频率明显高于上海人和台湾人的。因而，洛阳市居民对酒精的耐受性比上海人和台湾人强。

Studies of Genetic Polymorphisms of ADH2 and ALDH2 among the Han Population in Luoyang China
ZHANG Zhu-mei1,LIU Cha-zhen1,BIAN Jian-chao1,TANG Bo-ming2,JIANG Feng1,WANG Qi-jun2,WANG Qi-min2,ZHU Xin2,SHEN Fu-min1
1.Department of Epidemiology,Public Health School of Fudan University,Shanghai 200032,China;
2.Section Office of Epidemiology,Luoyang Hygiene and Anti-epidemic Center,Luoyang 471000,China
Abstract:In order to investigate genetic polymorphisms of ADH2 and ALDH2 among the Han population in Luoyang City,portions of exon 3 of ADH2 and exon 12 of ALDH gene were amplified by using polymerase chain reaction.The amplified products were electrophoresed on 10% undenatured vertical polyacrylamide gels and stained with argentine.Frequencies of ADH2*1 and ADH2*2 alleles are 42.86% and 57.14%.Frequencies of three genotypes of ADH2 are 22.86%、40.00% and 37.14%,respectively.Frequencies of ALDH2*1 and ALDH2*2 alleles are 85.24% and 14.76%.Genotype frequencies of ALDH2 loci are 71.43%、27.62% and 0.95%,respectively.Genetic polymorphisms of ADH2 and ALDH2 among the Han population in Luoyang City are different from those among Taiwanese and Shanghainese.Frequency of ALDH2*1/*1 in Luoyang people is higher than those in Shanghai and Taiwan.Therefore,there is a higher resistance to alcohol drinking in the Han population in Luoyang.
Key words：polymerase chain reaction-amplified products length polymorphism； alcohol dehydrogenase 2； aldehyde dehydrogenase 2； genetic

关键词: 聚合酶链反应-扩增片段长度多态, 乙醇脱氢酶2, 乙醛脱氢酶2, 基因多态性