title: Exposure to phthalates and phenols during pregnancy and offspring size at birth.
abstract: BACKGROUND
  Data concerning the effects of prenatal exposures to phthalates and phenols on fetal growth are limited in humans. Previous findings suggest possible effects of some phenols on male birth weight.
  
  
  OBJECTIVE
  Our aim was to assess the relationships between prenatal exposures to phthalates and phenols and fetal growth among male newborns.
  
  
  METHODS
  We conducted a case-control study on male malformations of the genitalia nested in two French mother-child cohorts with recruitment between 2002 and 2006. We measured, in maternal urinary samples collected between 6 and 30 gestational weeks, the concentrations (micrograms per liter) of 9 phenol (n = 191 pregnant women) and 11 phthalate metabolites (n = 287). Weight, length, and head circumference at birth were collected from maternity records. Statistical analyses were corrected for the oversampling of malformation cases.
  
  
  RESULTS
  Adjusted birth weight decreased by 77 g [95% confidence interval (CI): -129, -25] and by 49 g (95% CI: -86, -13) in association with a 1-unit increase in ln-transformed 2,4-dichlorophenol (DCP) and 2,5-DCP urinary concentrations, respectively. Benzophenone-3 (BP3) ln-transformed concentrations were positively associated with weight (26 g; 95% CI: -2, 54) and head circumference at birth (0.1 cm; 95% CI: 0.0, 0.2). Head circumference increased by 0.3 cm (95% CI: 0.0, 0.7) in association with a 1-unit increase in ln-transformed BPA concentration. For phthalate metabolites there was no evidence of monotonic associations with birth weight.
  
  
  CONCLUSIONS
  Consistent with findings of a previous study, we observed evidence of an inverse association of 2,5-DCP and a positive association of BP3 with male birth weight.
authors: Institut National de la Santé et de la Recherche Médicale, Institut Albert Bonniot (U823), Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Grenoble, France. Claire.Philippat@e.ujf-grenoble.fr
authors: Claire
authors: C
authors: Philippat
authors: Marion
authors: M
authors: Mortamais
authors: Cécile
authors: C
authors: Chevrier
authors: Claire
authors: C
authors: Petit
authors: Antonia M
authors: AM
authors: Calafat
authors: Xiaoyun
authors: X
authors: Ye
authors: Manori J
authors: MJ
authors: Silva
authors: Christian
authors: C
authors: Brambilla
authors: Isabelle
authors: I
authors: Pin
authors: Marie-Aline
authors: MA
authors: Charles
authors: Sylvaine
authors: S
authors: Cordier
authors: Rémy
authors: R
authors: Slama
mesh_terms: D000328:Adult; D001724:Birth Weight; D016022:Case-Control Studies; D015331:Cohort Studies; D004785:Environmental Pollutants / Q000633:toxicity* / Q000652:urine; D005260:Female; D005602:France / Q000453:epidemiology; D005837:Genitalia, Male / Q000002:abnormalities; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D018811:Maternal Exposure; D008875:Middle Aged; D010636:Phenols / Q000633:toxicity* / Q000652:urine; D010795:Phthalic Acids / Q000633:toxicity* / Q000652:urine; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D011297:Prenatal Exposure Delayed Effects / Q000139:chemically induced / Q000453:epidemiology*; D055815:Young Adult
chemical_list: D004785:Environmental Pollutants; D010636:Phenols; D010795:Phthalic Acids