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Menezes-Filho JA, Carvalho CF, Rodrigues JLG, Araújo CFS, Dos Santos NR, Lima CS, Bandeira MJ, Marques BLDS, Anjos ALS, Bah HAF, Abreu N, Philibert A, Mergler D. Environmental Co-Exposure to Lead and Manganese and Intellectual Deficit in School-Aged Children. Int J Environ Res Public Health 2018; 15:E2418. [PMID: 30384464 PMCID: PMC6266231 DOI: 10.3390/ijerph15112418] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/21/2018] [Accepted: 10/27/2018] [Indexed: 12/20/2022]
Abstract
Studies have demonstrated that, for urban children, dust represents the main exposure to sources of metals like lead (Pb) and manganese (Mn). We aimed to investigate the exposure to these metals and their association with intellectual deficit in children living in an industrial region. This cross-sectional study recruited volunteers from four elementary schools in the town of Simões Filho, Brazil. We evaluated 225 school-aged children (7⁻12 years) for blood lead (PbB) and manganese hair (MnH) and toenails (MnTn) by graphite furnace atomic absorption spectrometry. Child and maternal IQs were estimated using the Wechsler Abbreviated Scale for Intelligence (WASI). Median and range PbB were 1.2 (0.3⁻15.6) μg/dL. MnH and MnTn medians (ranges) were 0.74 (0.16⁻8.79) μg/g and 0.85 (0.15⁻13.30) μg/g, respectively. After adjusting for maternal IQ, age and Mn exposure, child IQ drops by 8.6 points for a 10-fold increase in PbB levels. Moreover, an effect modification of Mn co-exposure was observed. In children with low MnTn, association between Pb and child IQ was not significant (β = -6.780, p = 0.172). However, in those with high MnTn, the association was increased by 27.9% (β = -8.70, p = 0.036). Low Pb exposure is associated with intellectual deficit in children, especially in those with high MnTn.
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Affiliation(s)
- José A Menezes-Filho
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Chrissie F Carvalho
- Institute of Psychology, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Juliana L G Rodrigues
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Cecília F S Araújo
- Environmental and Public Health Program, National School of Public Health, Oswald Cruz Foundation, Rio de Janeiro 21041-210, Brazil.
| | - Nathália R Dos Santos
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Cássio S Lima
- Institute of Psychology, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Matheus J Bandeira
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Breno L de S Marques
- Institute of Psychology, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Ana Laura S Anjos
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Homegnon A F Bah
- Laboratory of Toxicology, School of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Neander Abreu
- Institute of Psychology, Federal University of Bahia, Salvador 40170-115, Brazil.
| | - Alline Philibert
- Centre de Recherche Interdisciplinaire sur la Biologie, la Santé, la Société et l'Environnement (CINBIOSE), Université du Québec a Montreal, Montreal, QC H3C 3P8, Canada.
| | - Donna Mergler
- Centre de Recherche Interdisciplinaire sur la Biologie, la Santé, la Société et l'Environnement (CINBIOSE), Université du Québec a Montreal, Montreal, QC H3C 3P8, Canada.
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Hossard L, Philibert A, Bertrand M, Colnenne-David C, Debaeke P, Munier-Jolain N, Jeuffroy MH, Richard G, Makowski D. Effects of halving pesticide use on wheat production. Sci Rep 2014; 4:4405. [PMID: 24651597 PMCID: PMC3960944 DOI: 10.1038/srep04405] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 02/28/2014] [Indexed: 11/16/2022] Open
Abstract
Pesticides pose serious threats to both human health and the environment. In Europe, farmers are encouraged to reduce their use, and in France a recent environmental policy fixed a target of halving the pesticide use by 2018. Organic and integrated cropping systems have been proposed as possible solutions for reducing pesticide use, but the effect of reducing pesticide use on crop yield remains unclear. Here we use a set of cropping system experiments to quantify the yield losses resulting from a reduction of pesticide use for winter wheat in France. Our estimated yield losses resulting from a 50% reduction in pesticide use ranged from 5 to 13% of the yield obtained with the current pesticide use. At the scale of the whole country, these losses would decrease the French wheat production by about 2 to 3 millions of tons, which represent about 15% of the French wheat export.
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Affiliation(s)
- L. Hossard
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
| | - A. Philibert
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
| | - M. Bertrand
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
| | - C. Colnenne-David
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
| | - P. Debaeke
- INRA, UMR1248 AGIR, F-31320 Castanet-Tolosan, France
- Université de Toulouse, INPT, UMR AGIR, F-31029 Toulouse, France
| | - N. Munier-Jolain
- INRA, UMR1347 Agroecologie, F-21065 Dijon, France
- AgroSup Dijon, UMR Agroecologie, F-21065 Dijon, France
| | - M. H. Jeuffroy
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
| | - G. Richard
- INRA, UAR1155 Département Environnement et Agronomie, F-84914 Avignon, France
| | - D. Makowski
- INRA, UMR211 Agronomie, F-78850 Thiverval-Grignon, France
- AgroParisTech, UMR Agronomie, F-78850 Thiverval-Grignon, France
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Ravit M, Philibert A, Coulibaly A, Dumont A, Tourigny C, Fournier P. Analyse des dépenses des femmes césarisées dans la région de Kayes au Mali. Rev Epidemiol Sante Publique 2012. [DOI: 10.1016/j.respe.2012.06.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Bezancon F, Philibert A. Precis de Pathologie Medicale. Maladies Infectieuses. J Parasitol 1926. [DOI: 10.2307/3271713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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