期刊
INTERNATIONAL ARCHIVES OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH
卷 83, 期 8, 页码 953-970出版社
SPRINGER
DOI: 10.1007/s00420-010-0510-x
关键词
Cadmium; Rice; Kidney; Bone; Renal anemia; Itai-itai disease
资金
- Ministry of Health, Labor, and Welfare
- Ministry of Agriculture, Forestry, and Fisheries of Japan
The cadmium-polluted Jinzu River Basin in Toyama, Japan, where nephropathy and itai-itai disease were endemic among resident farmers decades ago, has been almost completely restored. The aim of this study is to investigate whether inhabitants there would still exhibit cadmium accumulation and its effects on kidneys, bones, and erythropoiesis. We performed a cross-sectional study of 150 subjects from the polluted area and 144 controls from the same prefecture. Participants included female inhabitants from 34 to 74 years of age who underwent examinations to gather anthropometrical and medical information, obtain rice, blood and urine samples, and measure bone mineral density. Cadmium concentration in rice from the polluted area was lower than the level in the control area. Blood and urinary cadmium and urinary beta(2)-microglobulin levels were higher in subjects from the polluted area than controls, and the urinary beta(2)-microglobulin was independently affected by urinary cadmium. Bone mineral density did not differ between the two areas, but it was affected by renal tubular function in subjects from the polluted area. Serum bone alkaline phosphatase was lower in subjects from the polluted area compared to controls. We detected three cases of cadmium nephropathy among the subjects. One of them suffered from a renal anemia type of itai-itai disease. Inhabitants in the formerly polluted area still had high cadmium accumulations and showed a characteristic natural history of chronic cadmium toxicity, indicating that the risk remains for developing nephropathy or itai-itai disease in the future.
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