<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Geng, T. T.</style></author><author><style face="normal" font="default" size="100%">Huang, T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Maternal central obesity and birth size: a Mendelian randomization analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Lipids Health DisLipids Health DisLipids Health Dis</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Lipids in health and disease</style></alt-title><short-title><style face="normal" font="default" size="100%">Lipids in health and diseaseLipids in health and disease</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Birth Weight/*genetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Body Height/*genetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Body Mass Index</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Infant, Newborn</style></keyword><keyword><style  face="normal" font="default" size="100%">Longitudinal Studies</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Mendelian Randomization Analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Obesity, Abdominal/*genetics/pathology</style></keyword><keyword><style  face="normal" font="default" size="100%">Polymorphism, Single Nucleotide</style></keyword><keyword><style  face="normal" font="default" size="100%">Pregnancy</style></keyword><keyword><style  face="normal" font="default" size="100%">Puberty/genetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Waist Circumference/*genetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Waist-Hip Ratio</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2018</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jul 31</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1</style></number><edition><style face="normal" font="default" size="100%">2018/08/02</style></edition><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">181</style></pages><isbn><style face="normal" font="default" size="100%">1476-511X (Electronic)1476-511X (Linking)</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">BACKGROUND: Observational studies have illustrated that maternal central obesity is associated with birth size, including of birth weight, birth length and head circumference, but the causal nature of these associations remains unclear. Our study aimed to test the causal effect of maternal central obesity on birth size and puberty height growth using a Mendelian randomization (MR) analysis. METHODS: We performed two-sample MR using summary-level genome-wide public data. Thirty-five single nucleotide polymorphisms (SNPs), 25 SNPs and 41 SNPs were selected as instrumental variables for waist-to-hip ratio adjusted for BMI, waist circumference adjusted for BMI and hip circumference adjusted for BMI, respectively to test the causal effects of maternal central obesity on birth size and puberty height using an inverse-variance-weighted approach. RESULTS: In this MR analysis, we found no evidence of a causal association between waist circumference or waist-to-hip ratio and the outcomes. However, we observed that one standard deviation (SD) increase in hip circumference (HIP) was associated with a 0.392 SD increase in birth length (p = 1.1 x 10(- 6)) and a 0.168 SD increase in birth weight (p = 7.1 x 10(- 5)), respectively at the Bonferroni-adjusted level of significance. In addition, higher genetically predicted maternal HIP was strongly associated with the puberty heights (0.835 SD, p = 8.4 x 10(- 10)). However, HIP was not associated with head circumference (p = 0.172). CONCLUSIONS: A genetic predisposition to higher maternal HIP was causally associated with larger offspring birth size independent of maternal BMI. However, we found no evidence of a causal association between maternal waist circumference, waist-to-hip ratio and birth size.</style></abstract><accession-num><style face="normal" font="default" size="100%">30064420</style></accession-num><notes><style face="normal" font="default" size="100%">Geng, Ting-TingHuang, TaoEnglandLipids Health Dis. 2018 Jul 31;17(1):181. doi: 10.1186/s12944-018-0831-4.</style></notes><custom2><style face="normal" font="default" size="100%">6069873</style></custom2><auth-address><style face="normal" font="default" size="100%">Saw Swee Hock School of Public Health, National University of Singapore, Singapore, 117549, Singapore.Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, 38 Xueyuan Road, Haidian District, Beijing, 100191, China. huangtao@bjmu.edu.cn.</style></auth-address></record></records></xml>