Association of a nicotinic receptor gene polymorphism with spontaneous eyeblink rates.

Association of a nicotinic receptor gene polymorphism with spontaneous eyeblink rates.
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DOI:
10.1038/srep08658
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发表时间:
2015-03-02
期刊:
影响因子:
4.6
通讯作者:
Nomura M
Nomura M
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Nakano T;Kuriyama C;Himichi T;Nomura M

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自发眨眼的频率因人而异,从每分钟几次到几十次不等。由于多巴胺激动剂会立即增加眨眼频率,因此眨眼频率的个体差异被用作中枢多巴胺功能的行为指标。然而,眨眼频率与多巴胺相关基因多态性之间的关系尚未被发现。在这项研究中,我们证明了尼古丁乙酰胆碱受体CHRNA4 (rs1044396)的遗传变异增加了观看视频时的眨眼率。接受者工作特征分析显示,眨眼频率预测尼古丁受体基因的遗传变异具有显著的判别水平(0.66,p < 0.004)。目前的研究表明,由于烟碱受体的遗传变异,对乙酰胆碱的敏感性差异与自发眨眼率的个体差异有关。
Spontaneous eyeblink rates greatly vary among individuals from several blinks to a few dozen blinks per minute. Because dopamine agonists immediately increase the blink rate, individual differences in blink rate are used as a behavioral index of central dopamine functioning. However, an association of the blink rate with polymorphisms in dopamine-related genes has yet not been found. In this study, we demonstrated that a genetic variation of the nicotinic acetylcholine receptor CHRNA4 (rs1044396) increased the blink rate while watching a video. A receiver operating characteristic analysis revealed that the blink rate predicts a genetic variation in the nicotinic receptor gene with a significant discrimination level (0.66, p < 0.004). The present study suggests that differences in sensitivity to acetylcholine because of the genetic variation of the nicotinic receptor are associated with individual differences in spontaneous eye blink rate.
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