Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil

Detalhes bibliográficos
Autor(a) principal: Tavares, Lydia Maria Bocayuva
Data de Publicação: 2005
Outros Autores: Câmara, Volney Magalhães, Malm, Olaf, Santos, Elisabeth C. de Oliveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Cadernos de Saúde Pública
Texto Completo: https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503
Resumo: The nervous system can be damaged when the population is exposed to methyl mercury (MeHg) by ingesting fish, and children deserve special attention due to their increased susceptibility as compared to adults. A comparative cross-sectional study was performed in order to investigate the use of a battery of neurological development tests in two groups of 209 riverine children from 3 to 7 years old: a group exposed to moderate levels of MeHg (n = 75) and a control group (n = 134). The study included a questionnaire, the collection of scalp hair samples for determination of total mercury concentration, and performance on a test for evaluating neurological function in children. Riverine children presented higher exposure to MeHg (mean hair Hg = 5.37 ± 3.35µg.g-1) in comparison to the control group (mean Hg = 2.08 ± 1.37µg.g-1). Both groups showed a high proportion of children with what was considered "non-normal" performance, suggesting that the results could not be related to mercury exposure and that this type of test presented limitations for use with river-dwelling Amazon communities.
id FIOCRUZ-5_d9ddb9069ba0a5b9b6881fcfcdca4552
oai_identifier_str oai:ojs.teste-cadernos.ensp.fiocruz.br:article/2503
network_acronym_str FIOCRUZ-5
network_name_str Cadernos de Saúde Pública
repository_id_str
spelling Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, BrazilMercuryMercury PoisoningNervous SystemChildThe nervous system can be damaged when the population is exposed to methyl mercury (MeHg) by ingesting fish, and children deserve special attention due to their increased susceptibility as compared to adults. A comparative cross-sectional study was performed in order to investigate the use of a battery of neurological development tests in two groups of 209 riverine children from 3 to 7 years old: a group exposed to moderate levels of MeHg (n = 75) and a control group (n = 134). The study included a questionnaire, the collection of scalp hair samples for determination of total mercury concentration, and performance on a test for evaluating neurological function in children. Riverine children presented higher exposure to MeHg (mean hair Hg = 5.37 ± 3.35µg.g-1) in comparison to the control group (mean Hg = 2.08 ± 1.37µg.g-1). Both groups showed a high proportion of children with what was considered "non-normal" performance, suggesting that the results could not be related to mercury exposure and that this type of test presented limitations for use with river-dwelling Amazon communities.O sistema nervoso pode ser afetado quando as pessoas, notadamente crianças, estão expostas ao metilmercúrio pela ingestão de peixes. Foi desenvolvido um estudo seccional, comparativo, para avaliar o desempenho de dois grupos de crianças ribeirinhas de 3 a 7 anos de idade na realização de uma bateria de testes de desenvolvimento neurológico. Um grupo estudo composto de crianças expostas a moderados níveis de mercúrio (n = 75) e um grupo controle (n = 134) de crianças que diferiam do primeiro grupo por uma ingestão menor de peixe. O estudo incluiu questionário, coleta de amostras de cabelo para determinação de mercúrio total e avaliação do desempenho das crianças na realização dos testes. As crianças do grupo estudo apresentaram maior média de concentração de mercúrio no cabelo (5,37 ± 3,35µg.g-1) em comparação com o grupo controle (2,08 ± 1,37µg.g-1). Observou-se uma elevada proporção de crianças que apresentaram desempenhos considerados como "não normais" em ambos os grupos, evidenciando que os resultados não poderiam ser relacionados com a exposição ao mercúrio e as limitações do uso deste tipo de teste para crianças ribeirinhas.Reports in Public HealthCadernos de Saúde Pública2005-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlapplication/pdfhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503Reports in Public Health; Vol. 21 No. 4 (2005): July/AugustCadernos de Saúde Pública; v. 21 n. 4 (2005): Julho/Agosto1678-44640102-311Xreponame:Cadernos de Saúde Públicainstname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZenghttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503/5018https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503/5019Tavares, Lydia Maria BocayuvaCâmara, Volney MagalhãesMalm, OlafSantos, Elisabeth C. de Oliveirainfo:eu-repo/semantics/openAccess2024-03-06T15:27:05Zoai:ojs.teste-cadernos.ensp.fiocruz.br:article/2503Revistahttps://cadernos.ensp.fiocruz.br/ojs/index.php/csphttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/oaicadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br1678-44640102-311Xopendoar:2024-03-06T13:02:55.893104Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)true
dc.title.none.fl_str_mv Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
title Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
spellingShingle Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
Tavares, Lydia Maria Bocayuva
Mercury
Mercury Poisoning
Nervous System
Child
title_short Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
title_full Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
title_fullStr Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
title_full_unstemmed Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
title_sort Performance on neurological development tests by riverine children with moderate mercury exposure in Amazonia, Brazil
author Tavares, Lydia Maria Bocayuva
author_facet Tavares, Lydia Maria Bocayuva
Câmara, Volney Magalhães
Malm, Olaf
Santos, Elisabeth C. de Oliveira
author_role author
author2 Câmara, Volney Magalhães
Malm, Olaf
Santos, Elisabeth C. de Oliveira
author2_role author
author
author
dc.contributor.author.fl_str_mv Tavares, Lydia Maria Bocayuva
Câmara, Volney Magalhães
Malm, Olaf
Santos, Elisabeth C. de Oliveira
dc.subject.por.fl_str_mv Mercury
Mercury Poisoning
Nervous System
Child
topic Mercury
Mercury Poisoning
Nervous System
Child
description The nervous system can be damaged when the population is exposed to methyl mercury (MeHg) by ingesting fish, and children deserve special attention due to their increased susceptibility as compared to adults. A comparative cross-sectional study was performed in order to investigate the use of a battery of neurological development tests in two groups of 209 riverine children from 3 to 7 years old: a group exposed to moderate levels of MeHg (n = 75) and a control group (n = 134). The study included a questionnaire, the collection of scalp hair samples for determination of total mercury concentration, and performance on a test for evaluating neurological function in children. Riverine children presented higher exposure to MeHg (mean hair Hg = 5.37 ± 3.35µg.g-1) in comparison to the control group (mean Hg = 2.08 ± 1.37µg.g-1). Both groups showed a high proportion of children with what was considered "non-normal" performance, suggesting that the results could not be related to mercury exposure and that this type of test presented limitations for use with river-dwelling Amazon communities.
publishDate 2005
dc.date.none.fl_str_mv 2005-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503
url https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503/5018
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2503/5019
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
application/pdf
dc.publisher.none.fl_str_mv Reports in Public Health
Cadernos de Saúde Pública
publisher.none.fl_str_mv Reports in Public Health
Cadernos de Saúde Pública
dc.source.none.fl_str_mv Reports in Public Health; Vol. 21 No. 4 (2005): July/August
Cadernos de Saúde Pública; v. 21 n. 4 (2005): Julho/Agosto
1678-4464
0102-311X
reponame:Cadernos de Saúde Pública
instname:Fundação Oswaldo Cruz (FIOCRUZ)
instacron:FIOCRUZ
instname_str Fundação Oswaldo Cruz (FIOCRUZ)
instacron_str FIOCRUZ
institution FIOCRUZ
reponame_str Cadernos de Saúde Pública
collection Cadernos de Saúde Pública
repository.name.fl_str_mv Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)
repository.mail.fl_str_mv cadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br
_version_ 1798943355592245248

Registros relacionados