Follow-up study on lead exposure in children living in a smelter community in northern Mexico
Rubio Andrade, Marisela (Universidad Juárez del Estado de Durango. Facultad de Medicina)
Valdés Pérezgasga, Francisco (Instituto Tecnológico Regional de la Laguna)
Alonso Chamarro, Julián (Universitat Autònoma de Barcelona)
Rosado Loria, Jorge Luis (Universidad Autónoma de Querétaro (Mèxic). Escuela de Ciencias Naturales)
Cebrión, Mariano E. (Centro de Investigación y de Estudios Avanzados Del IPN. Sección Externa de Toxicología)
García Vargas, Gonzalo G. (Universidad Juárez del Estado de Durango. Facultad de Medicina)

Data:	2011
Resum:	Background: To study the changes of children lead exposure in the city of Torreon during the last five years, after environmental and public health interventions, using the timeline of lead in blood concentration as the biomarker of exposure and its relation to lead in soil concentrations. Methods. This follow-up study started in 2001 and consisted of 232 children living in nine neighborhoods in Torreon. Children were tested at 0, 6, 12 and 60 months. Lead in blood concentrations, Hemoglobin, Zinc-Protoporphyrin, anthropometric measures and socioeconomic status questionnaire was supplied to the parents. Results: Median and range of lead in blood concentrations obtained at 0, 6, 12, 60 months were: 10. 12 μg/dl (1. 9 - 43. 8), 8. 75 μg/dl (1. 85 - 41. 45), 8. 4 g/dl (1. 7 - 35. 8) and 4. 4 μg/dl (1. 3 - 30. 3), respectively. The decrease of lead in blood levels was significantly related to ages 0, 6, 12 and 60 months of the follow-up study. The timeline of B-Pb was associated with the timeline of lead in soil concentrations. Conclusions: B-Pb levels have significantly decreased in the group of children studied. This could be explained by a) environmental interventions by authorities and the smelter companies, b) normal changes in hygienic habits as children age and c) lead redistribution from blood to hard tissues.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Environmental health, Vol. 10, Núm. 1 (2011) , p. 66, ISSN 1476-069X

DOI: 10.1186/1476-069X-10-66
PMID: 21767395

7 p, 1.1 MB

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