Association of Low Lead Levels with Behavioral Problems and Executive Function Deficits in Schoolers from Montevideo, Uruguay

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Título

Association of Low Lead Levels with Behavioral Problems and Executive Function Deficits in Schoolers from Montevideo, Uruguay

Tema

PLOMO
URUGUAY
EXPOSICION AL PLOMO
ESCOLARES
COMPORTAMIENTO
BIBLIOGRAFIA NACIONAL QUIMICA
2018

Abstract

The negative effect of lead exposure on children’s intelligence is well-documented. Less is known about the impact of lead on the use of executive functions to self-regulate behavior. We measured blood lead level (BLL) in a sample of first grade children from Montevideo, Uruguay (n = 206, age 6.7 ± 0.5 years, 59.7% boys). Behavior was assessed with teacher versions of the Conners Rating Scale (CRS) and the Behavior Rating Inventory of Executive Functions (BRIEF). Mean BLL was 4.2 ± 2.1 μg/dL; 10% had mild-to-severe ratings of Attentional Deficit with Hyperactivity Disorder (ADHD) (T score > 65). In negative binomial regression, BLL was not associated with CRS sub-scales, but was associated with a poorer ability to inhibit inappropriate behaviors, prevalence ratio (PR) [95% CI]: 1.01 [1.00, 1.03] as measured by the BRIEF. In covariate-adjusted models, the association with BLL was attenuated. When stratified by sex, the covariate-adjusted association between BLL, hyperactivity, poorer inhitibion, emotional control, and behavioral regulation was marginally significant for girls but not boys. In summary, among children with low lead-exposure, we found some, but nonetheless modest, evidence of a relationship between higher BLL and child behavior. If confirmed by larger studies and other objective measures of behavior, such links could have implications for learning and social interaction, particularly among girls.

Autor

Barg Beltrame, Gabriel.
Daleiro, Mónica
Queirolo, Elena I.
Ravenscroft, Julia
Peregalli, Fabiana
Kordas, Katarzyna

Fuente

International Journal of Environmental Research and Public Health v. 15, 2018. -- 15p.--e2735

Editor

MDPI

Fecha

2018

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Artículo

Identificador

DOI:10.3390/ijerph15122735
Fecha de agregación
May 7, 2019
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Citación
Barg Beltrame, Gabriel., “Association of Low Lead Levels with Behavioral Problems and Executive Function Deficits in Schoolers from Montevideo, Uruguay,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed July 23, 2019, http://riquim.fq.edu.uy/items/show/5754.
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