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Replication of LIN28B SNP association with age of menarche in young Filipino women.

ABSTRACT: 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 (??=?-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.

SUBMITTER: Croteau-Chonka DC

PROVIDER: S-EPMC3772980 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature

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Replication of LIN28B SNP association with age of menarche in young Filipino women.

Croteau-Chonka D C DC Lange L A LA Lee N R NR Adair L S LS Mohlke K L KL

Pediatric obesity 20130606 5

<h4>Background</h4>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.<h4>Objectives</h4>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 (CLHN ...[more]

PMID: 23740805

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Project description:BackgroundEarly and late age at menarche are associated with risk of hypertension, but little is known whether modifiable lifestyle can reduce this risk.MethodsOur study leverages 60,135 healthy young Chinese women from the Environmental and LifEstyle FActors iN metabolic health throughout life-course Trajectories (ELEFANT) study. Menarche age and lifestyle factors were assessed by self-reported questionnaires and hypertension was diagnosed by physicians. We estimated the odds ratios (ORs) of hypertension associated with menarche age using multivariable logistic regression. We further investigated whether modifiable lifestyles (body mass index, BMI; psychological stress; passive smoking; and imbalanced diet) increased risk in joint analyses.ResultsThe association between age at menarche and hypertension was U-shaped, with age???12 at menarche giving the highest OR (1.46, 95% confidence interval [CI], 1.27-1.69) and???16 the second highest (OR?=?1.36, 95% CI?=?1.15-1.62). Simultaneous analysis of lifestyle risk factors and age of menarche showed that having one or more modifiable risk factors increased the menarche age-hypertension association. The risk of hypertension among participants with menarche age???12 decreased from OR 13.21 (95% CI?=?5.17-29.36) with four high-risk lifestyle factors to 12.36 (95% CI?=?9.51-16.05) with three high-risk factors, 5.24 (95% CI?=?4.11-6.69) with two, and 2.76 (95% CI?=?2.09-3.60) with one, in comparison to individuals with no high-risk lifestyle factors and menarche age 14.ConclusionsOur results suggest that modification of lifestyle, including maintenance of normal weight and a balanced diet, are associated with substantially reduce the risk of hypertension in high-risk individuals. Early and late age at menarche are risk factors for the development of hypertension in Western populations, and there is limited evidence that this is also true of Chinese populations. Targeted prevention of hypertension in vulnerable populations would be highly beneficial in efforts to reduce the incidence of cardiovascular disease, but it is not currently known whether lifestyle intervention could reduce hypertension risk. In this study, we analysed the risk of hypertension by age at menarche and four modifiable lifestyle factors (BMI, diet, psychological stress, and smoking tobacco) in a cohort of 60,135 young adult Chinese women (mean age 29). We identified that early and late age at menarche are associated with increased risk of hypertension in young Chinese women. There was joint effects between age at menarche and lifestyles on hypertension only participants with age at menarche ?12 and being overweight or obese. Modification of lifestyle, including maintenance of normal weight and a balanced diet, can substantially reduce the risk of hypertension in high-risk individuals. In conclusion, our study has revealed that early and late menarche age are associated with the development of hypertension in young Chinese women, and that this risk is modified by healthy lifestyle traits.

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Replication of LIN28B SNP association with age of menarche in young Filipino women.

Publications

Replication of LIN28B SNP association with age of menarche in young Filipino women.

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