Prenatal maternal blood triglyceride and fatty acid levels in relation to exposure to di(2-ethylhexyl)phthalate: a cross-sectional study

Xiaofang Jia, Yukiko Harada, Masahiro Tagawa, Hisao Naito, Yumi Hayashi, Husna Yetti, Masashi Kato, Seiko Sasaki, Atsuko Araki, Chihiro Miyashita, Tamiko Ikeno, Reiko Kishi, Tamie Nakajima

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Abstract

Objectives: The hypolipidemic effects of di(2-ethylhexyl)phthalate (DEHP) exposure in humans have not been investigated. And the influences of maternal prenatal DEHP exposure on birth outcomes are not well-known. We aimed to estimate prenatal DEHP exposure in maternal blood, and evaluate its relationships to maternal blood triglyceride (TG) and fatty acid (FA) levels and to birth outcomes. Methods: We studied 318 mother–newborn pairs residing in Sapporo, Japan. Blood was taken one time during pregnancy for each mother. Maternal and infant characteristics were obtained from medical records and questionnaire survey. We measured DEHP metabolite, mono(2-ethylhexyl) phthalate (MEHP), along with TG and 9 FAs using maternal blood, and analyzed associations of MEHP level with maternal blood TG/FA levels and infant birth dimensions. Results: Maternal blood TG and palmitoleic/oleic acid levels were higher, but stearic/docosahexaenoic acids and MEHP were lower during late pregnancy. Maternal blood MEHP levels inversely correlated with TG and palmitic/palmitoleic/oleic/linoleic/α-linolenic acids. After adjustment for confounders, we found that a tenfold increase in blood MEHP levels correlated with a decrease in TG of 25.1 mg/dl [95 % confidence interval (CI) 4.8–45.3 mg/dl], and similar relations in palmitic (β = −581.8; 95 % CI −906.5, −257.0), oleic (β = −304.2; 95 % CI −518.0, −90.5), linoleic (β = −348.6; 95 % CI −510.6, −186.6), and α-linolenic (β = −6.3; 95 % CI −9.5, −3.0) acids. However, we observed no correlations between maternal blood MEHP levels and infant birth weight, length, chest circumference, or head circumference. Conclusions: Ambient DEHP exposure during pregnancy inversely correlated with maternal blood TG and 4 FA levels, but not birth outcomes.

Original languageEnglish
Pages (from-to)168-178
Number of pages11
JournalEnvironmental Health and Preventive Medicine
Volume20
Issue number3
DOIs
Publication statusPublished - 18-05-2015

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health

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    Jia, X., Harada, Y., Tagawa, M., Naito, H., Hayashi, Y., Yetti, H., Kato, M., Sasaki, S., Araki, A., Miyashita, C., Ikeno, T., Kishi, R., & Nakajima, T. (2015). Prenatal maternal blood triglyceride and fatty acid levels in relation to exposure to di(2-ethylhexyl)phthalate: a cross-sectional study. Environmental Health and Preventive Medicine, 20(3), 168-178. https://doi.org/10.1007/s12199-014-0440-4