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Physical activity and epigenetic biomarkers in maternal blood during pregnancy.

Badon SE, Littman AJ, Chan KCG, Tadesse MG, Stapleton PL, Bammler TK, Sorensen TK, Williams MA, Enquobahrie DA. Physical activity and epigenetic biomarkers in maternal blood during pregnancy. Epigenomics. 2018 Nov 1; 10(11):1383-1395.

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Abstract:

AIM: Investigate associations of leisure time physical activity (LTPA) with DNA methylation and miRNAs during pregnancy. Patients and methods: LTPA, candidate DNA methylation and circulating miRNAs were measured (average 15 weeks gestation) in pregnant women (n =  92). RESULTS: Each additional hour of prepregnancy LTPA duration was associated with hypermethylation in C1orf212 (ß  =  0.137, 95% CI: 0.004-0.270) and higher circulating miR-146b-5p (ß  =  0.084, 95% CI: 0.017-0.151). Each additional metabolic equivalent hour of early-pregnancy LTPA energy expenditure was associated with higher circulating miR-21-3p (ß  =  0.431, 95% CI: 0.089-0.772) in women carrying female offspring, and lower circulating miR-146b-5p (ß  = -0.285, 95% CI: -0.528 to -0.043) and miR-517-5p (ß  = -0.406, 95% CI: -0.736 to -0.076) in women carrying male offspring. CONCLUSION: Our findings suggest that LTPA may influence maternal epigenetic biomarkers, possibly in an offspring sex-specific manner.





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