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Reproductive and developmental toxicity of phthalates
Stockholm University, Faculty of Science, Department of Environmental Chemistry.
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2009 (English)In: Journal of toxicology and environmental health. Part B, Critical reviews, ISSN 1093-7404, E-ISSN 1521-6950, Vol. 12, no 4, 225-249 p.Article in journal (Refereed) Published
Abstract [en]

The purposes of this review are to (1) evaluate human and experimental evidence for adverse effects on reproduction and development in humans, produced by exposure to phthalates, and (2) identify knowledge gaps as for future studies. The widespread use of phthalates in consumer products leads to ubiquitous and constant exposure of humans to these chemicals. Phthalates were postulated to produce endocrine-disrupting effects in rodents, where fetal exposure to these compounds was found to induce developmental and reproductive toxicity. The adverse effects observed in rodent models raised concerns as to whether exposure to phthalates represents a potential health risk to humans. At present, di(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DBP), and butyl benzyl phthalate (BBP) have been demonstrated to produce reproductive and developmental toxicity; thus, this review focuses on these chemicals. For the general population, DEHP exposure is predominantly via food. The average concentrations of phthalates are highest in children and decrease with age. At present, DEHP exposures in the general population appear to be close to the tolerable daily intake (TDI), suggesting that at least some individuals exceed the TDI. In addition, specific high-risk groups exist with internal levels that are several orders of magnitude above average. Urinary metabolites used as biomarkers for the internal levels provide additional means to determine more specifically phthalate exposure levels in both general and high-risk populations. However, exposure data are not consistent and there are indications that secondary metabolites may be more accurate indicators of the internal exposure compared to primary metabolites. The present human toxicity data are not sufficient for evaluating the occurrence of reproductive effects following phthalate exposure in humans, based on existing relevant animal data. This is especially the case for data on female reproductive toxicity, which are scarce. Therefore, future research needs to focus on developmental and reproductive endpoints in humans. It should be noted that phthalates occur in mixtures but most toxicological information is based on single compounds. Thus, it is concluded that it is important to improve the knowledge of toxic interactions among the different chemicals and to develop measures for combined exposure to various groups of phthalates.

Place, publisher, year, edition, pages
2009. Vol. 12, no 4, 225-249 p.
National Category
Environmental Sciences
Research subject
Environmental Chemistry
URN: urn:nbn:se:su:diva-36028DOI: 10.1080/10937400903094091ISI: 000268952000001OAI: diva2:288724
Available from: 2010-01-21 Created: 2010-01-21 Last updated: 2011-05-19Bibliographically approved

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Bergman, Åke
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