pre-pregnancy maternal exposure to persistent organic pollutants and gestational weight gain: a prospective cohort study

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ID: 160754
2016
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Abstract
Persistent organic pollutants (POPs) have been implicated in the development of obesity in non-pregnant adults. However, few studies have explored the association of POPs with gestational weight gain (GWG), an important predictor of future risk of obesity in both the mother and offspring. We estimated the association of maternal pre-pregnancy levels of 63 POPs with GWG. Data are from women (18–40 years; n = 218) participating in a prospective cohort study. POPs were assessed using established protocols in pre-pregnancy, non-fasting blood samples. GWG was assessed using three techniques: (1) total GWG (difference between measured pre-pregnancy weight and final self-reported pre-delivery weight); (2) category based on pre-pregnancy body mass index (BMI)-specific Institute of Medicine (IOM) recommendations; and (3) area under the GWG curve (AUC). In an exploratory analysis, effects were estimated separately for women with BMI < 25 kg/m2 versus BMI ≥ 25 kg/m2. Multivariable polytomous logistic regression and linear regression were used to estimate the association between each chemical or congener and the three GWG outcomes. p,p’-dichlorodiphenyl trichloroethane (p,p’-DDT) was significantly inversely associated with AUC after adjustment for lipids and pre-pregnancy BMI: beta {95% confidence interval (CI)}, −378.03 (−724.02, −32.05). Perfluorooctane sulfonate (PFOS) was significantly positively associated with AUC after adjustment for lipids among women with a BMI < 25 kg/m2 {beta (95% CI), 280.29 (13.71, 546.86)}, but not among women with a BMI ≥ 25 kg/m2 {beta (95% CI), 56.99 (−328.36, 442.34)}. In summary, pre-pregnancy levels of select POPs, namely, p,p’-DDT and PFOS, were moderately associated with GWG. The association between POPs and weight gain during pregnancy may be more complex than previously thought, and adiposity prior to pregnancy may be an important effect modifier.
Reference Key
jaacks2016internationalpre-pregnancy Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Lindsay M. Jaacks;Dana Boyd Barr;Rajeshwari Sundaram;Jagteshwar Grewal;Cuilin Zhang;Germaine M. Buck Louis
Journal archives of biochemistry and biophysics
Year 2016
DOI
10.3390/ijerph13090905
URL
http://www.mdpi.com/1660-4601/13/9/905
Keywords
pregnancy persistent organic pollutants organochlorine pesticides

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