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Maternal serum levels of perfluoroalkyl substances in early pregnancy and offspring birth weight
Örebro University, School of Medical Sciences. Department of Health Sciences, Karlstad University, Karlstad, Sweden.
Department of Health Sciences, Karlstad University, Karlstad, Sweden.
Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
Department of Health Sciences, Karlstad University, Karlstad, Sweden; Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden.
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2020 (English)In: Pediatric Research, ISSN 0031-3998, E-ISSN 1530-0447, Vol. 87, no 6, p. 1093-1099Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Perfluoroalkyl substances (PFASs) are widespread, bioaccumulating, and persistent and show placental transfer. Emerging research indicates associations between prenatal exposure and low birth weight. The aim of this study was to assess the associations between first trimester exposure to PFASs and birth weight (BW) in the Swedish Environmental, Longitudinal, Mother and child, Asthma and allergy (SELMA) study and examine whether associations differ between girls and boys.

METHODS: Eight PFASs were analyzed in maternal serum (median: 10 weeks of pregnancy). Associations between prenatal PFAS exposure and birth outcomes with BW, BW for gestational age, and birth small for gestational age (SGA) were assessed in 1533 infants, adjusted for potential confounders and stratified by sex.

RESULTS: Increased maternal perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), and perfluoroundecanoic acid (PFUnDA) were associated with lower BW, lower BW for gestational age, and SGA birth. Associations were significant only in girls, where prenatal exposure in the upper quartile was associated with a 93-42-g lower BW when compared with that of the lowest quartile exposure. The associations were not mediated by effects on gestational age.

CONCLUSIONS: We found associations between prenatal exposure for five different PFASs and birth weight, with more pronounced associations in girls than in boys.

Place, publisher, year, edition, pages
Nature Publishing Group, 2020. Vol. 87, no 6, p. 1093-1099
National Category
Occupational Health and Environmental Health
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URN: urn:nbn:se:oru:diva-78672DOI: 10.1038/s41390-019-0720-1ISI: 000529759500023PubMedID: 31835271Scopus ID: 2-s2.0-85076699776OAI: oai:DiVA.org:oru-78672DiVA, id: diva2:1381143
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2020-05-18Bibliographically approved

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