Khoury Eliana Dirce Torres, Souza Givago da Silva, Silveira Luiz Carlos de Lima, Costa Carlos Araújo da, Araújo Amélia A de, Pinheiro Maria da Conceição Nascimento
Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, Brasil.
Cad Saude Publica. 2013 Nov;29(11):2307-18. doi: 10.1590/0102-311x00158012.
This study evaluated current levels of mercury exposure and sensory symptoms in adults from three riverine communities in Pará State, Brazil, two of which located in the Tapajós River basin and one in the Tocantins basin. Participants in this study included 78 residents in Barreiras (Tapajós), 30 in São Luiz do Tapajós (Tapajós), and 49 in Furo do Maracujá (Tocantins). Total hair mercury concentrations were quantified by atomic absorption spectrophotometry, and neurological evaluation was conducted by routine examination. Mercury concentrations in the Tapajós communities were higher than those in the Tocantins (p < 0.01). Evaluation of neurological changes showed no significant difference between the communities in exposed areas and control areas for the changes observed by conventional neurological examination, except for gait deviation (p < 0.05). The study concludes that despite the mercury exposure levels, there was a low frequency of sensory alterations according to conventional neurological testing.
本研究评估了巴西帕拉州三个河滨社区成年人的当前汞暴露水平和感觉症状，其中两个社区位于塔帕若斯河流域，一个位于托坎廷斯河流域。本研究的参与者包括巴雷拉斯（塔帕若斯）的78名居民、圣路易斯杜塔帕若斯（塔帕若斯）的30名居民和富罗杜马拉库亚（托坎廷斯）的49名居民。通过原子吸收分光光度法定量测定头发中的总汞浓度，并通过常规检查进行神经学评估。塔帕若斯社区的汞浓度高于托坎廷斯社区（p < 0.01）。神经学变化评估显示，除步态偏差外（p < 0.05），在常规神经学检查观察到的变化方面，暴露区域和对照区域的社区之间没有显著差异。该研究得出结论，尽管存在汞暴露水平，但根据常规神经学测试，感觉改变的频率较低。
