摘要
目的：探讨中国汉族群体5-羟色胺2C受体基因(5-HTR2C)启动区相关单核苷酸多态(SNP)位点rs518147多态性的分布状况及其与强迫症易感性之间的关系。
方法：采用直接测序法分析中国汉族群体符合中国精神障碍分类与诊断标准第3版或国际疾病分类第10版强迫症诊断标准的患者308例(强迫症组：男123例,女185例)和410名健康对照(对照组：男175例,女235例)5-HTR2Crs518147位点半合子(男性)或基因型(女性)分布频率,并分析半合子(男性)或基因型(女性)分布频率与强迫症发病的遗传易感性的关系。
结果：强迫症组中5-HTR2C启动区rs518147位点男性患者携带G半合子与女性患者携带G+(GG与GC)基因型的比率均显著高于对照组(男性：x2=4.973,P=0.026；女性:x2=5.243,P=0.022),G等位基因的频率明显高于对照组(x2=4.611,P=0.032)。
结论：中国汉族群体中5-HTR2C启动区rs518147位点多态性可能与强迫症遗传易感性相关。
Objective:To investigate the association between obsessive-compulsive disorder(OCD) and rs518147polymorphism in the promoter of the serotonin2C receptor gene(5-HTR2C) in Chinese Han population.
Methods:Direct sequencing technique was used to analyse the frequencies of rs518147polymorphism of5-HTR2C hemizygote (male) and genotype (female) in308patients (OCD:123male,185female) with OCD diagnosed according to Chinese classification of mental disorders (CCMD-3) or International Classification of Diseases-10(ICD-10) criteria and410control (Control:175male,235female) and then a case-control association analysis was performed with SPSS13.0.
Results:The study group were more likely to be G hemizygote (for male) and G+(GG and GC) genotype (for female) than the control group(male:χ2=4.973, P=0.026; female: χ2=5.243, P=0.022). The study group were more likely to take G allele (χ2=4.611, P=0.032) than the control group.
Conclusions:Our results indicated that the rs518147polymorphisms in the promoter of5-HTR2C may play a major role in the genetic predisposition to OCD in Chinese Han population.
引文
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