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作 者:张颖[1] 苏乃伦 王桂菊[5] 崔佳佳[2] 衣明纪[1] 刘世国[3]
机构地区:[1]青岛大学附属医院儿童保健科,山东省青岛市266003 [2]青岛大学附属医院精神病与精神卫生学教研室,山东省青岛市266003 [3]青岛大学附属医院产前诊断中心,山东省青岛市266003 [4]山东省青岛市妇女儿童医院检验科 [5]山东省日照市人民医院儿童保健科
出 处:《中华医学遗传学杂志》2014年第5期646-649,共4页Chinese Journal of Medical Genetics
基 金:国家自然科学基金(30971586,81371499)
摘 要:目的探讨5-羟色胺转运体基因启动子区(the serotonin transporter linked polymorphic region,5-HTTLPR)44bp数目可变串联重复序列(variable number of tandem repeat,VNTR)多态性与中国汉族人群Tourette综合征(Tourette syndrome,TS)发病的关联性。方法应用聚合酶链反应-基因分型方法对来自中国汉族人群的252个TS核心家系的5-HTTLPR44bpVNTR多态性进行检测,用传递不平衡检验(transmission disequilibrium test,TDT)和单倍型相对风险分析(haplotype relative risk,HRR)方法分析该多态性位点的遗传分布与TS的关系,应用基于单倍型的单倍型相对风险分析(haplotype—based HRR,HHRR)进行验证。结果对252个TS核心家系的5-HTTLPR 44 bpVNTR基因频率分布进行TDT、HRR和HHRR分析,发现5-HTTLPR44bpVNTR与TS之间存在关联,且存在等位基因L的过度传递(TDT:x2=6.680,dr=1,P=0.012;HRR:x2=9.345,P=0.002,OR=1.739,95%CI为1.218~2.483)。分别对204例男性和48例女性的核心家系与TS的关系进行分析,发现5-HTTLPR与男性TS之间存在关联,与女性TS无明显关联(男性TDT:x2=4.643,df=1,P=0.038;女性TDT:x2=2.189,df=1,P=0.188)。结论5-HTTLPR44bpVNTR多态性与中国汉族人群男性TS发病存在明显的关联,该结果提示5-HTTLPR是男性TS发病的易感基因,但仍需在不同的种族中进行验证。Objective To assess the association between the serotonin transporter linked polymorphic region (5-HTTLPR) 44 bp variable number of tandem repeat (VNTR) polymorphism and Tourette syndrome (TS) in ethnic Han Chinese trios. Methods A total of 252 TS trios (patients and their parents) were recruited. Genetic contribution of the 5-HTTLPR 44 bp VNTR polymorphism was evaluated by genotyping, haplotype relative risk (HRR) analysis and transmission disequilibrium test (TDT) statistics. To enhance the efficiency of the test, haplotype-based HRR (HHRR) was also performed. Results The TDT, HRR and HHRR analyses have revealed a significant association of the 5-HTTLPR 44 bp VNTR polymorphism with TS, and provided a strong evidence for an ovevtransmission of L allele from parents to the affected children (TDT: x2 =6. 680, df=1, P=0. 012; HRR: x2 =9. 345, P=0.002, OR=1. 739, 95%CI for 1. 218-2. 483). For 204 male and 48 female TS trios, TDT and HRR were analyzed separately. The results showed a significant association between 5-HTTLPR and male TS (for males. TDT: x2=4. 643, df=1, P=0.038; for females, TDT: X2=2. 189, df=1, P=0. 188). Conclusion 5-HTTLPR may be the susceptibility gene for male TS patients among the Chinese Han population. However, the results need to be replicated in datasets collected from different populations.
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