Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children
Abstract Background Children are exposed to p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) and p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) through placental and lactational transfer. Some studies have suggested that early-life exposure to these compounds could lead to increased body mass index...
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doaj-c96b51c7c4af4d52a7b3b91db954754f2020-11-25T03:33:50ZengBMCEnvironmental Health1476-069X2020-05-011911910.1186/s12940-020-00603-zEstimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese childrenLaurence Plouffe0Delphine Bosson-Rieutort1Lina Madaniyazi2Miyuki Iwai-Shimada3Kunihiko Nakai4Nozomi Tatsuta5Shoji F. Nakyama6Marc-André Verner7Department of Occupational and Environmental Health, School of Public Health, Université de MontréalDepartment of Management, Evaluation & Health Policy, School of Public Health, Université de MontréalCentre for Health and Environmental Risk Research, National Institute for Environmental StudiesCentre for Health and Environmental Risk Research, National Institute for Environmental StudiesDepartment of Development and Environmental Medicine, Tohoku University Graduate School of MedicineDepartment of Development and Environmental Medicine, Tohoku University Graduate School of MedicineCentre for Health and Environmental Risk Research, National Institute for Environmental StudiesDepartment of Occupational and Environmental Health, School of Public Health, Université de MontréalAbstract Background Children are exposed to p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) and p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) through placental and lactational transfer. Some studies have suggested that early-life exposure to these compounds could lead to increased body mass index (BMI) during childhood. Our aim was to assess whether children’s exposure during the first 2 years of life is associated with BMI z-score in Japanese children at 42 months of age. Methods We used data from a birth cohort (n = 290) of the Tohoku Study of Child Development. p,p’-DDT and p,p’-DDE levels were measured in breast milk samples collected 1 month after birth, and levels in children were estimated using a toxicokinetic model for three exposure periods (0–6 months, 6–12 months, 12–24 months). Associations between exposure estimates and BMI z-score at 42 months of age were assessed using multivariate linear regression models. Results We found no significant association between levels of p,p’-DDT measured in breast milk or estimated in children and BMI z-score. However, we observed associations between estimated p,p’-DDE levels in girls during all postnatal exposure periods and BMI z-score; for each log increase in the estimated p,p’-DDE levels, BMI z-score increased by 0.23 (C.I. 95%: 0.01, 0.45) for the 0–6 months exposure period, 0.26 (C.I. 95%: 0.06, 0.47) for the 6–12 months exposure period, and 0.24 (C.I. 95%: 0.05, 0.43) for the 12–24 months exposure period. Conclusion In this study of Japanese children, estimated postnatal p,p’-DDE levels were associated with increased BMI z-score at 42 months of age, mostly in girls. These results are in line with previous studies supporting that early-life exposure to p,p’-DDE may be associated with higher BMI during childhood.http://link.springer.com/article/10.1186/s12940-020-00603-zp,p’-dichlorodiphenyltrichloroethane (p,p’-DDT)p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE)Body mass index (BMI)Postnatal exposureBreast milkToxicokinetic modeling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Laurence Plouffe Delphine Bosson-Rieutort Lina Madaniyazi Miyuki Iwai-Shimada Kunihiko Nakai Nozomi Tatsuta Shoji F. Nakyama Marc-André Verner |
spellingShingle |
Laurence Plouffe Delphine Bosson-Rieutort Lina Madaniyazi Miyuki Iwai-Shimada Kunihiko Nakai Nozomi Tatsuta Shoji F. Nakyama Marc-André Verner Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children Environmental Health p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) Body mass index (BMI) Postnatal exposure Breast milk Toxicokinetic modeling |
author_facet |
Laurence Plouffe Delphine Bosson-Rieutort Lina Madaniyazi Miyuki Iwai-Shimada Kunihiko Nakai Nozomi Tatsuta Shoji F. Nakyama Marc-André Verner |
author_sort |
Laurence Plouffe |
title |
Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children |
title_short |
Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children |
title_full |
Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children |
title_fullStr |
Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children |
title_full_unstemmed |
Estimated postnatal p,p’-DDT and p,p’-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children |
title_sort |
estimated postnatal p,p’-ddt and p,p’-dde levels and body mass index at 42 months of age in a longitudinal study of japanese children |
publisher |
BMC |
series |
Environmental Health |
issn |
1476-069X |
publishDate |
2020-05-01 |
description |
Abstract Background Children are exposed to p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) and p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) through placental and lactational transfer. Some studies have suggested that early-life exposure to these compounds could lead to increased body mass index (BMI) during childhood. Our aim was to assess whether children’s exposure during the first 2 years of life is associated with BMI z-score in Japanese children at 42 months of age. Methods We used data from a birth cohort (n = 290) of the Tohoku Study of Child Development. p,p’-DDT and p,p’-DDE levels were measured in breast milk samples collected 1 month after birth, and levels in children were estimated using a toxicokinetic model for three exposure periods (0–6 months, 6–12 months, 12–24 months). Associations between exposure estimates and BMI z-score at 42 months of age were assessed using multivariate linear regression models. Results We found no significant association between levels of p,p’-DDT measured in breast milk or estimated in children and BMI z-score. However, we observed associations between estimated p,p’-DDE levels in girls during all postnatal exposure periods and BMI z-score; for each log increase in the estimated p,p’-DDE levels, BMI z-score increased by 0.23 (C.I. 95%: 0.01, 0.45) for the 0–6 months exposure period, 0.26 (C.I. 95%: 0.06, 0.47) for the 6–12 months exposure period, and 0.24 (C.I. 95%: 0.05, 0.43) for the 12–24 months exposure period. Conclusion In this study of Japanese children, estimated postnatal p,p’-DDE levels were associated with increased BMI z-score at 42 months of age, mostly in girls. These results are in line with previous studies supporting that early-life exposure to p,p’-DDE may be associated with higher BMI during childhood. |
topic |
p,p’-dichlorodiphenyltrichloroethane (p,p’-DDT) p,p’-dichlorodiphenyldichloroethylene (p,p’-DDE) Body mass index (BMI) Postnatal exposure Breast milk Toxicokinetic modeling |
url |
http://link.springer.com/article/10.1186/s12940-020-00603-z |
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