This study includes 2 phases. During phase 1, pregnant women are followed over the course of pregnancy. The phase 2 is a follow-up of the mother-child dyad at 3, 5 and 10-12 year after delivery. The purpose of this phase 1 is to : * assess the contribution and interactions of adipokines in the development of insulin resistance during pregnancy and gestational diabetes; * assess levels of maternal adipokines as determinants of development and fetal growth; * determine the genetic variations that influence levels of adipokines and glucose regulation during pregnancy and in newborns. The purpose of this phase 2 is to: * identify DNA methylation variations at birth that are predictive of childhood overweight/obesity. * identify maternal characteristics associated with DNA methylation variations predictive of childhood overweight/obesity. * establish whether the loci predictive of childhood overweight/obesity at birth are still differentially methylated at 5 years of age (samples collected at 5 years of age). * identify DNA methylation variations at birth that are predictive of childhood neurodevelopment problems at 3, 5 and 10 years of age.
Study Type
OBSERVATIONAL
Enrollment
1,034
Centre de recherche du Centre hospitalier universitaire de Sherbrooke
Sherbrooke, Quebec, Canada
Diagnosis of gestational diabetes mellitus
75g oral glucose tolerance test
Time frame: 24-28 weeks of gestation
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