期刊
PSYCHIATRIC GENETICS
卷 17, 期 1, 页码 13-16出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/YPG.0b013e328010e2c3
关键词
association study; binge eating disorder; ghrelin; polymorphism
Objectives The pathophysiological mechanisms underlying binge eating disorder are poorly understood. Evidence exists for the fact that abnormalities in peptides involved in the regulation of appetite, including ghrelin, may play a role in binge eating behavior. Genes involved in the ghrelin physiology may therefore contribute to the biological vulnerability to binge eating disorder. Methods We examined whether two polymorphisms of the ghrelin gene, the G152A (Arg51 Gln) and C214A (Leu72Met), were associated with binge eating disorder. Ninety obese or nonobese women with binge eating disorder and 119 normal weight women were genotyped at the ghrelin gene. Results Statistical analyses showed that the Leu72Met ghrelin gene variant was significantly more frequent in binge eating disorder patients (chi(2) = 5.940; d.f. = 1, P = 0.01) and was associated with a moderate, but significant risk to develop binge eating disorder (odds ratio = 2.725, 95% confidence interval: 1.168-6.350). Conclusions Although these data should be regarded as preliminary because of the small sample size, they suggest that the Leu72Met ghrelin gene variant may contribute to the genetic susceptibility to binge eating disorder.
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