多巴胺D4受体第3外显子48bp可变重复序列多态性与抽动障碍的关联分析

被引:12
作者
黄颐
刘协和
郭兰婷
李涛
机构
[1] 华西医科大学附属第一医院心理卫生研究所
[2] 华西医科大学附属第一医院心理卫生研究所!成都
关键词
抽动障碍; 轻微脑损伤综合征; 多态现象(遗传学); 病例对照研究;
D O I
暂无
中图分类号
R749.94 [儿童精神病];
学科分类号
摘要
目的 研究多巴胺D4 受体第 3外显子 48bp可变重复序列 (DRD4exonⅢ 48bpVNTR)多态性是否与抽动障碍相关联。方法 根据临床诊断及是否合并注意缺陷多动障碍 (ADHD) ,将 178例抽动障碍患者 (患者组 )分为抽动障碍组 [包括Tourette综合征 (TS)和慢性抽动障碍 (CT) ,共 91例 ]及合并组 [合并ADHD的TS或CT ,共 87例 ]两个亚组 ,采用病例 对照关联分析方法 ,以及聚合酶链反应、VNTR多态性分析等技术 ,进行抽动障碍与DRD4exonⅢ 48bpVNTR多态性的关联分析 ,将其等位基因按是否≥ 5个 48bp重复片段分为 2组进行比较 ,并与 2 0 9名正常人进行对照。结果 患者组、抽动障碍组及合并组的DRD4exonⅢ 48bpVNTR等位基因频率与对照组比较 ,差异无显著性 (χ2 值分别为 5 81,3 76 ,6 78;P值分别为 0 2 1,0 44 ,0 15 ) ,仅合并组与DRD4exonⅢ 48bpVNTR多态性的≥ 5个48bp的长重复等位基因存在关联 (χ2 =5 5 5 ,P =0 0 2 )。结论 DRD4exonⅢ 48bpVNTR多态性长重复等位基因与合并ADHD的抽动障碍存在关联 ,该等位基因可能是中国人群合并ADHD的抽动障碍的遗传危险因素
引用
收藏
页码:26 / 29
页数:4
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