Teores de chumbo e mercúrio em cabelo de crianças residentes em Cubatão, na região sudeste do Brasil

Filho, Eladio Santos; Silva, Rebeca de Souza e; Sakuma, Alice Momoyo; Scorsafava, Maria Anita

doi:10.1590/s0034-89101993000200002

Cited by 7 publications

(4 citation statements)

References 17 publications

(13 reference statements)

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“…One possible explanation is the fact that the community of Capiarara was comprised of unpaved streets, which during dry seasons a great deal of suspended particles of soil are observed. In a heavily industrialized city of Cubatão, Brazil, the mean PbH concentration in children (aged 1 to 10 years) was 7.25 ± 8.51 μg/g, ranging from 2.5 to 71.4 μg/g (Santos-Filho et al 1993). Zaida et al (2007) in an investigation with children from 0 to 12 months from the city of Marrakech, Morocco observed a PbH average value of 6.6 μg/g, which were associated with environmental contamination of soil, water and food.…”

Section: Discussionmentioning

confidence: 99%

Determinants of lead exposure in children on the outskirts of Salvador, Brazil

Menezes-Filho

Viana

Paes

2011

Environ Monit Assess

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Lead (Pb) is a toxic heavy metal that is widely distributed throughout the environment. Pb is an important neurotoxic metal and children are more susceptible to its effect due to their higher absorption rate and greater susceptibility of the developing nervous system. In this work, we evaluated the lead exposure levels in children living near a metallurgical plant and identified risk factors associated with its internal dose. All children, aged 1-10 years and 11 months, living near a metallurgical plant in the great Salvador area, Brazil were evaluated in this cross-sectional study and compared with children from a non exposed area. Occipital hair and blood were used to assess exposure. Air lead levels in the respirable fraction (PM 2.5 ) were also measured in both areas. Blood lead levels (BLL), hair lead levels (PbH) and air lead were determined by graphite furnace atomic absorption spectrometry. Spearman correlations analysis was used to evaluate correlations between BLL, PbH and descriptors. Significant risk factors were modeled using multivariate linear regression analysis. Air lead levels were approximately tenfolds lower than EPA reference concentration (0.15 μg/m 3 ). Median BLL and PbH were1.65 ± 1.45 μg/dL and 1.26 ± 3.70 μg/g, respectively, in exposed children. In the referents, medians were BLL 1.20 ± 1.20 μg/dL; PbH 2.09 ± 2.06 μg/g. No significant difference was observed in biomarkers levels between boys and girls. It was observed a positive weak correlation (Spearman rho = 0.197, p = 0.033) between BLL and PbH. Our data show that children's lead body burden measured as BLL or PbH are low when compared with the recommended reference values. Despite that, we were able to identify four risk factors associated with increased biological lead levels: age, living near industrial site, environmental tobacco smoking and, above all, domestic waste burning. In order to prevent such avoidable exposure, environmental education and proper waste management should be implemented, especially in developing countries.

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Section: Discussionmentioning

confidence: 99%

Determinants of lead exposure in children on the outskirts of Salvador, Brazil

Menezes-Filho

Viana

Paes

2011

Environ Monit Assess

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“…Santos Filho et al (1993) assessed lead (Pb) and Hg levels in children's hair from Cubatão. Hair of 251 children (from 1 to 10 years old) was analyzed by AAS analytical technique.…”

Section: Resultsmentioning

confidence: 99%

“…Cubatão city -age: 1 -10 years old (São Paulo State) (Santos Filho et al, 1993) 0.82 ± 0. Mercury and methylmercury concentration assessment in children's hair from Manaus, Amazonas State, Brazil which can influence dietary habits which in turn can affect Hg intake.…”

Section: Discussionmentioning

confidence: 99%

Mercury and methylmercury concentration assessment in children's hair from Manaus, Amazonas state, Brazil

et al. 2012

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The present study evaluated Hg and MeHg content in hair samples of 201 children 2 to 7 years old, living in six neighborhoods of the city of Manaus, Amazonas State, Brazil. In general, the total Hg and MeHg median ranges in hair were similar (0.91 to 1.71 mg kg -1 ) except for the São Jose neighborhood, which was lower (0.16 mg kg -1 ). De spite the fact that the Manaus population consumes fish as part of the normal dietary intake, the Hg hair levels were below the level for an adult population not exposed to mercury (2.0 mg kg -1 ). These data were compared to demographic, socioeconomic information and eating habits of the families that took part in the study. The results were also compared to other published data from the Amazon region, other regions of Brazil and other countries. Future studies to set Hg and MeHg levels in hair of children in Brazil should take into account and assess the diversity of the country, mainly in terms of eating habits, socio-economic and cultural aspects. Keywords: mercury, methylmercury, children's hair, Amazon region. ). Esses dados foram comparados com informações demográficas, socioeconômicas e hábitos alimentares das famílias que participaram do estudo. Os resultados também foram comparados com outros dados publicados da Amazônia, outras regiões do Brasil e outros países. Futuros estudos para definir os níveis de Hg total e MeHg no cabelo das crianças brasileiras deverão considerar e avaliar a diversidade do país, principalmente em termos de hábitos alimentares, nível sócio-econômico e os aspectos culturais. Avaliação da concentração de Mercúrio e Metilmercúrio em cabelo de crianças de Manaus, Estado do Amazonas, Brasil

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“…Moreira and Moreira (2004a,b) reviewed and concluded that heavy metals like lead have implications on the human body and health, but there is still insufficient information on the mechanisms of action that account for such toxicity. Lead is toxic for humans (Sadão,2002), especially for children (Jarosinska and Rogan, 2003; Nriagu et al, 1997; Santos Filho et al, 1993) and populations that are occupationally exposed (Kham et al, 2010; Prista et al, 2006). This fact as it was confirmed in a survey carried out by technicians of the State Health Secretary and the Municipal Health secretary of Barau, São Paulo, Brazil (Paula et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Lead hepatotoxicology

Sa¹,

Costa

Cunha³

2011

Toxicol Ind Health

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The increasing use of lead (Pb) for industrial purposes has resulted in the significant increase in environmental contamination of our planet especially in concern to water and food. In this study using the electron scanning microscopy (SEM), the authors showed the effects of this metal as a result of a chronic and cumulative process. As a primary method of detection of Pb in situ, SEM was chosen, coupled with a detection system Noran Voyager of basic microanalysis X-ray (SEM-XRM), with detection system energy dispersive spectrometry. Mice BALB/c was used as a study model. An animal model of inflammation was used, that consisted in the formation of a subcutaneous pocket of air. It was observed that 75% of Pb stock was captured by the liver, the main target organ in the capture of the metal, the kidney was the second organ to capture the Pb stock and the third was the spleen. It was verified that a low deposition of Pb was found in the lungs and the brain. The main results of this study showed how Pb is captured by different organs. We also demonstrated the vulnerability to inflammation of this metal.

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Teores de chumbo e mercúrio em cabelo de crianças residentes em Cubatão, na região sudeste do Brasil

Cited by 7 publications

References 17 publications

Determinants of lead exposure in children on the outskirts of Salvador, Brazil

Determinants of lead exposure in children on the outskirts of Salvador, Brazil

Mercury and methylmercury concentration assessment in children's hair from Manaus, Amazonas state, Brazil

Lead hepatotoxicology

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