Croteau-Chonka D C, Lange L A, Lee N R, Adair L S, Mohlke K L
Department of Genetics, University of North Carolina, Chapel Hill, NC, USA.
Pediatr Obes. 2013 Oct;8(5):e50-3. doi: 10.1111/j.2047-6310.2013.00178.x. Epub 2013 Jun 6.
Age of menarche, or the timing of first menses in girls, is a physiological trait that shows substantial genetic heritability. Earlier age of menarche is associated with increased childhood adiposity and with adult risk of obesity and cardiovascular disease.
We sought to further characterize the single nucleotide polymorphism (SNP) rs7759938 from the menarche locus LIN28B in 827 young Filipino women from the Cebu Longitudinal Health and Nutrition Survey (CLHNS).
We tested rs7759938 for additive association with age of menarche and also tested whether childhood adiposity, as measured by body mass index (BMI) at age 8, mediated this relationship.
We observed nominal association of rs7759938 with age of menarche (β = -0.118 years, 95% confidence interval = (-0.216, -0.020), P = 0.019) with an effect direction consistent with the previous report. We also observed suggestive evidence that the effect of the SNP on age of menarche was independent of childhood BMI.
These data confirm the strongest gene reported in Europeans (LIN28B) as a contributor to age of menarche in an Asian population.
初潮年龄,即女孩首次月经的时间,是一种具有显著遗传遗传性的生理特征。初潮年龄较早与儿童期肥胖增加以及成人肥胖和心血管疾病风险增加有关。
我们试图在来自宿务纵向健康与营养调查(CLHNS)的827名年轻菲律宾女性中,进一步表征初潮位点LIN28B的单核苷酸多态性(SNP)rs7759938。
我们测试了rs7759938与初潮年龄的加性关联,并测试了8岁时通过体重指数(BMI)衡量的儿童期肥胖是否介导了这种关系。
我们观察到rs7759938与初潮年龄存在名义上的关联(β = -0.118岁,95%置信区间 = (-0.216,-0.020),P = 0.019),效应方向与先前报告一致。我们还观察到提示性证据,表明该SNP对初潮年龄的影响独立于儿童期BMI。
这些数据证实了欧洲人报道的最强基因(LIN28B)在亚洲人群中也是初潮年龄的一个影响因素。