Chronic toxicity of rare-earth elements on human beings |
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Authors: | Hui Zhang Jia Feng Weifang Zhu Congqiang Liu Suqin Xu Pingping Shao Dongsen Wu Wenjiao Yang Jianghong Gu |
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Institution: | (1) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, People’s Republic of China;(2) The People’s Hospital of Guizhou Province, 550002 Guiyang, People’s Republic of China;(3) Geological Exploratory Team No. 2, Jiangxi Nonferrous Metal Company, 341000 Ganzhou, People’s Republic of China |
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Abstract: | Blood analyses for rare-earth element (REE)-high background regions in South Jiangxi show that the population averages of
many of the biochemical indices deviate markedly from normal values in the normal region. These deviations are thought to
be caused by prolonged intake of REE through food chains in view of that the toxicity of other harmful metals such as Pb and
Cd can be neglected because of their insignificant amounts in the environment. In comparison with the normal region, blood
biochemical indices abnormal in the REE-high regions are manifested as low total serum protein (TSP), albumin, β-globulin,
glutamic pyruvic transitanase, serium triglycerides, and immunoglobulin, but high cholesterol. These deviations may be related
to the REE concentration and composition of food chains, and are sex dependent. Certain blood indices (such as TSP) of different
age groups in the LREE-high region indicate that the influence of REE on males is a one-way irreversible process, whereas
females show a strong ability of restoration. |
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Keywords: | Blood biochemical indices toxicity of REEs influencing factor sex dependence REE-high regions a control region South Jiangxi China |
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