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Prenatal Phthalate Exposures and Anogenital Distance in Swedish Boys
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Health Sciences.ORCID iD: 0000-0003-0417-1686
Cty Council Varmland, Karlstad, Sweden..
Lund Univ, Div Occupat & Environm Med, Lund, Sweden..ORCID iD: 0000-0002-8767-0589
Lund Univ, Div Occupat & Environm Med, Lund, Sweden..ORCID iD: 0000-0001-7435-9890
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2015 (English)In: Journal of Environmental Health Perspectives, ISSN 0091-6765, E-ISSN 1552-9924, Vol. 123, no 1, 101-107 p.Article in journal (Refereed) PublishedText
Abstract [en]

BACKGROUND: Phthalates are used as plasticizers in soft polyvinyl chloride (PVC) and in a large number of consumer products. Because of reported health risks, diisononyl phthalate (DiNP) has been introduced as a replacement for di(2-ethylhexyl) phthalate (DEHP) in soft PVC. This raises concerns because animal data suggest that DiNP may have antiandrogenic properties similar to those of DEHP. The anogenital distance (AGD)-the distance from the anus to the genitals-has been used to assess reproductive toxicity. OBJECTIVE: The objective of this study was to examine the associations between prenatal phthalate exposure and AGD in Swedish infants. METHODS: AGD was measured in 196 boys at 21 months of age, and first-trimester urine was analyzed for 10 phthalate metabolites of DEP (diethyl phthalate), DBP (dibutyl phthalate), DEHP, BBzP (benzylbutyl phthalate), as well as DiNP and creatinine. Data on covariates were collected by questionnaires. RESULTS: The most significant associations were found between the shorter of two AGD measures (anoscrotal distance; AGDas) and DiNP metabolites and strongest for oh-MMeOP [mono(4-methyl-7-hydroxyloctyl) phthalate] and oxo-MMeOP [mono-(2-ethyl-5-oxohexyl) phthalate]. However, the AGDas reduction was small (4%) in relation to more than an interquartile range increase in DiNP exposure. CONCLUSIONS: These findings call into question the safety of substituting DiNP for DEHP in soft PVC, particularly because a shorter male AGD has been shown to relate to male genital birth defects in children and impaired reproductive function in adult males and the fact that human levels of DiNP are increasing globally.

Place, publisher, year, edition, pages
2015. Vol. 123, no 1, 101-107 p.
Keyword [en]
Endocrine disrupting chemicals; in-utero exposure; male-rat; diisononyl phthalate; perinatal exposure; sexual development; gene-expression; dose-response; male infants; house-dust
National Category
Environmental Health and Occupational Health Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Public Health Science
URN: urn:nbn:se:kau:diva-41664DOI: 10.1289/ehp.1408163ISI: 000347385000020PubMedID: 25353625OAI: diva2:918421
Available from: 2016-04-11 Created: 2016-04-11 Last updated: 2016-06-13Bibliographically approved

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Bornehag, Carl-GustafJonsson, Bo A. G.Lindh, Christian H.Janson, Staffan
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