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Occupational solvent exposure during pregnancy and child behaviour at age 2
  1. Fabienne Pelé1,2,
  2. Gina Muckle3,4,
  3. Nathalie Costet1,
  4. Ronan Garlantézec1,5,
  5. Christine Monfort1,
  6. Luc Multigner1,
  7. Florence Rouget1,6,
  8. Sylvaine Cordier1
  1. 1Team of Epidemiological Research on Environment, Reproduction and Development, INSERM IRSET U1085, University of Rennes I, Rennes, France
  2. 2Epidemiological and Public Health Service, University Hospital Rennes, Rennes, France
  3. 3Medical Research Center, CHUQ, Québec, Canada
  4. 4School of Psychology, Laval University, Québec, Canada
  5. 5Public Health Service, University Hospital Brest, Brest, France
  6. 6Pediatric Department, University Hospital Rennes, Rennes, France
  1. Correspondence to Fabienne Pelé, Team of Epidemiological Research on Environment, Reproduction and Development, INSERM IRSET U1085; Université Rennes I, Campus de Beaulieu, Rennes 35042, France; fabienne.pele{at}univ-rennes1.fr

Abstract

Objectives Many women who work during pregnancy are occupationally exposed to toxicants. The developing central nervous system is highly vulnerable to neurotoxicants such as solvents. Although the neurotoxicity of solvents to adults is well established, very few studies have examined their effects on children's behaviour following prenatal exposure.

Methods Women from the Perturbateurs endocriniens: Étude Longitudinale sur les Anomalies de la Grossesse, l'Infertilité et l'Enfance (PELAGIE) mother–child cohort (including 3005 working women) were recruited in Brittany (France) between 2002 and 2006, at the beginning of pregnancy, to assess occupational exposure to solvents at that time. Child behaviour was documented at age 2 by mothers (n=1278) assessing components of attention deficit/hyperactivity, aggression, opposition and emotionality. We used a multiple linear regression analysis to evaluate the association between occupational solvent exposure and children's behaviour. Complementary sensitivity analyses allowed us to handle missing data, due mostly to attrition.

Results 20% of women reported occasional exposure and 31% regular exposure to solvents. Children prenatally exposed were more likely to have higher scores of attention deficit/hyperactivity and aggression, and dose–response relations were observed.

Conclusions The dose–response effect and the high prevalence of children potentially exposed to solvents from their mother's workplace exposure underline the public health relevance of this result. Our results should be replicated in further studies designed to identify which solvents are most deleterious and to assess child behaviour at school age.

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