5-羟色胺2C受体基因-759C/T和-697G/C多态性与抗精神病药物所致体质量增加的关联

目的:探讨5-羟色胺2C受体(5-hydroxytryptamine 2C receptor,HTR2C)基因-759C/T和-697G/C多态性与抗精神病药物所致体质量增加的相关性.方法:用病例匹配进行对照研究,研究组为85例服用抗精神病药物后体质量增加≥7%的精神分裂症患者,对照组为85例服用抗精神病药物体质量增加<7%的精神分裂症患者,对照组在抗精神病药物种类和治疗时间上与研究组匹配.采用高温连接酶检测反应法对170例患者进行单核苷酸多态性分析.结果:研究组男性患者中携带HTR2C-759C半合子和女性患者中携带HTR2C-759C/C型的比率明显高于对照组;研究组男性患者中携带HTR2C-697G半合子和女性患者中携带HTR2C-697CG/GG型的频率明显高于对照组,差异均有统计学意义(P<0.05).结论:5-羟色胺2C受体基因启动子区-759C/T和-697G/C多态性可能与抗精神病药物引起的体质量增加存在关联.

Association of HTR2C-759C/T and -697G/C polymorphisms with antipsychotic agent-induced weight gain

OBJECTIVE: To determine whether antipsychotic agent-induced weight gain was associated with 5-hydroxytryptamine 2C receptor (HTR2C) gene-759C/T and -697G/C polymorphisms. METHODS: A case-matching controlled study was done. Eighty-five patients who had gained more than 7% of their pre-drug body weight served as a study group, and 85 patients who had gained less than 7% of their pre-drug body weight served as a control group. The control group were matched with the study group in the kinds of antipsychotic agents and the course of antipsychotic treatment. The ligation diction reaction technique was used to analyse the frequencies of HTR2C gene-759C/T and -697G/C polymorphisms. RESULTS: The study group were more likely to be hemizygous for the -759C (for male) and the -759CC genotype (for female) than the control group. The study group were more likely to be hemizygous for the -697G (for male) and the -697CG/GG genotype (for female) (all P<0.05) than the control group. CONCLUSION: The -759C/T and -697G/C polymorphisms of the promoter region of HTR2C gene may be associated with antipsychotic agent-induced weight gain.