Ruiz-Castell M., Paco P., Barbieri F.L., Duprey Jean-Louis, Forns J., Carsin A.E., Freydier R., Casiot C., Sunyer J., Gardon Jacques. (2012). Child neurodevelopment in a Bolivian mining city. Environmental Research, 112, p. 147-154. ISSN 0013-9351.
Titre du document
Child neurodevelopment in a Bolivian mining city
Année de publication
2012
Auteurs
Ruiz-Castell M., Paco P., Barbieri F.L., Duprey Jean-Louis, Forns J., Carsin A.E., Freydier R., Casiot C., Sunyer J., Gardon Jacques
Source
Environmental Research, 2012,
112, p. 147-154 ISSN 0013-9351
This study evaluates the neurodevelopment of children living near contaminated mining industries during their first year of life. Participants from the city of Oruro (Bolivia) were prospectively recruited during pregnancy. Follow-up occurred between May 2007 and November 2009. Information about the socioeconomic status and medical history of the pregnant women were collected using questionnaires. Neurodevelopment was evaluated for 246 children using the Bayley Scales of Infant Development (BSID) at 10.5-12.5 months of age. Exposure to trace elements (Pb, As, Cd, Sb, Cs, Zn, Fe, Cu, Se, Rb, and Sr) during prenatal life was evaluated by testing maternal blood concentrations before delivery. Almost all measured levels were lower than the control limits. The blood lead concentration of pregnant women was low, considering the contaminated environmental context. The geometric mean was 1.76 mu g/dL (95% Cl; 1.68-1.84), a level comparable with those observed in non-contaminated areas. The only element found to be relatively elevated was antimony, with a geometric mean of 1.03 mu g/dL (95% Cl: 0.96-1.11). Our results suggest that women from this mining area were not highly exposed. The Bayley Scales of Infant Development (BSID) did not reveal mental or psychomotor abnormalities. Surprisingly, at the observed low levels, lead was positively associated with the children's BSID performance.
Plan de classement
Pollution [038]
;
Santé : généralités [050]
;
Géologie et formations superficielles [064]
Description Géographique
BOLIVIE
Localisation
Fonds IRD [F B010054403]
Identifiant IRD
fdi:010054403
