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ABSTRACT: Background
Animal studies indicate that some phthalate metabolites may harm female reproductive function.Objectives
We assessed the associations between exposure to phthalate metabolites and pregnancy loss.Methods
Using a previously established cohort of couples planning their first pregnancy, we analyzed four primary and two oxidized secondary phthalate metabolites in urine samples collected on day 10 after the first day of the last menstrual period before conception occurred (n = 128) and during the previous cycle (if any, n = 111). Subclinical embryonal loss was identified by repeated measurement of urinary human chorionic gonadotropin, and information on clinical spontaneous abortions was obtained by telephone interview with the mother.Results
Pregnancy loss (n = 48) was increased among women with urinary concentration of monoethylhexyl phthalate (MEHP) in the upper tertile in the conception sample compared with women in the lowest tertile [adjusted odds ratio (OR) = 2.9; 95% confidence interval (CI): 1.1, 7.6]. The corresponding OR for subclinical embryonal loss (n = 32) was 40.7 (95% CI: 4.5, 369.5).Conclusions
The phthalate metabolite MEHP was associated with higher occurrence of pregnancy loss. Because this is the first human study to show this association and the sample size is small, the findings need to be corroborated in independent studies.
SUBMITTER: Toft G
PROVIDER: S-EPMC3295336 | biostudies-literature | 2012 Mar
REPOSITORIES: biostudies-literature
Toft Gunnar G Jönsson Bo A G BA Lindh Christian H CH Jensen Tina Kold TK Hjollund Niels H NH Vested Anne A Bonde Jens Peter JP
Environmental health perspectives 20111123 3
<h4>Background</h4>Animal studies indicate that some phthalate metabolites may harm female reproductive function.<h4>Objectives</h4>We assessed the associations between exposure to phthalate metabolites and pregnancy loss.<h4>Methods</h4>Using a previously established cohort of couples planning their first pregnancy, we analyzed four primary and two oxidized secondary phthalate metabolites in urine samples collected on day 10 after the first day of the last menstrual period before conception occ ...[more]