https://repositorio.ufba.br/handle/ri/5578
Tipo: | Artigo de Periódico |
Título: | Elevated manganeseandcognitiveperformanceinschool-agedchildren and theirmothers |
Título(s) alternativo(s): | Environmental Research |
Autor(es): | Menezes Filho, José Antônio Novaes, Cristianede O. Moreira, Josino C. Sarcinelli, Paula N. Mergler, Donna |
Autor(es): | Menezes Filho, José Antônio Novaes, Cristianede O. Moreira, Josino C. Sarcinelli, Paula N. Mergler, Donna |
Abstract: | Background: Growing evidence suggests thatexcessmanganese(Mn)inchildrenisassociatedwithneuro behavioralimpairments.InBrazil,elevatedhairMnconcentrationswerereportedinchildrenlivingneara ferro-manganesealloyplant. Objectives: We investigatedthesechildren’sandcaregivers’cognitivefunctioninrelationtobio- indicators ofMnexposure. Methods: In thiscross-sectionalstudy,theWISC-IIIwasadministeredto83childrenagedbetween6and 12 years;theRavenProgressiveMatrixwasadministeredtotheprimarycaregivers(94%mothers),who likewiserespondedtoaquestionnaireonsociodemographicsandbirthhistory.Mninhair(MnH)and blood (MnB)andbloodlead(PbB)weremeasuredbygraphitefurnaceatomicabsorptionspectrometry (GFAAS). Results: Children’smeanMnBandMnHwere8.2 mg/L (2.7–23.4)and5.83 mg/g (0.1–86.68),respectively. Mean maternalMnHwas3.50 mg/g (0.10–77.45)andcorrelatedtochildren’sMnH(rho¼0.294, p¼0.010).Children’sMnHwasnegativelyrelatedtoFull-ScaleIntelligenceQuotient(IQ)andVerbalIQ; b coefficientsforMnHwere 5.78 (95%CI 10.71to 0.21) and 6.72( 11.81to 0.63),adjusted for maternaleducationandnutritionalstatus.MaternalMnHwasnegativelyassociatedwith performanceontheRaven’s(b¼ 2.69,95%CI 5.43 to0.05),adjustedforeducationyears,family incomeandage. Conclusions: These findingsconfirmthathighMnHinchildrenisassociatedwithpoorercognitive performance,especiallyintheverbaldomain.Primarycaregiver’sIQislikewiseassociatedtoMn exposure,suggestingthat,inthissituation,children’scognitionmaybeaffecteddirectlyandindirectly by Mnexposure. |
Palavras-chave: | Manganese Intelligence Children Neurobehavioral Alloy plant |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/5578 |
Data do documento: | 2011 |
Aparece nas coleções: | Artigo Publicado em Periódico (FAR) |
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