A preliminary study of mercury exposure and blood pressure in the Brazilian Amazon.
Environ Health
; 5: 29, 2006 Oct 10.
Article
en En
| MEDLINE
| ID: mdl-17032453
ABSTRACT
BACKGROUND:
Fish is considered protective for coronary heart disease (CHD), but mercury (Hg) intake from fish may counterbalance beneficial effects. Although neurotoxic effects of methylmercury (MeHg) are well established, cardiovascular effects are still debated. The objective of the present study was to evaluate blood pressure in relation to Hg exposure and fish consumption among a non-indigenous fish-eating population in the Brazilian Amazon.METHODS:
The study was conducted among 251 persons from six communities along the Tapajós River, a major tributary of the Amazon. Data was obtained for socio-demographic information, fish consumption, height and weight to determine body mass index (BMI), systolic and diastolic blood pressure, and Hg concentration in hair samples.RESULTS:
Results showed that overall, systolic and diastolic blood pressure, were relatively low (mean 113.9 mmHg +/- 14.6 and 73.7 mmHg +/- 11.0). Blood pressure was significantly associated with hair total Hg (H-Hg), age, BMI and gender. No association was observed between fish consumption and blood pressure, although there were significant inter-community differences. Logistic regression analyses showed that the Odds Ratio (OR) for elevated systolic blood pressure (> or = 130 mmHg) with H-Hg > or = 10 microg/g was 2.91 [1.26-7.28], taking into account age, BMI, smoking, gender and community.CONCLUSION:
The findings of this preliminary study add further support for Hg cardiovascular toxicity.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Presión Sanguínea
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Contaminación de Alimentos
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Exposición a Riesgos Ambientales
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Hipertensión
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Mercurio
Límite:
Adolescent
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Adult
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Aged
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Aged80
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Animals
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Female
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Humans
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Male
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Middle aged
País como asunto:
America do sul
/
Brasil
Idioma:
En
Año:
2006
Tipo del documento:
Article