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U.S. Department of Energy
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Urine analysis for detection of cadmium-induced renal changes, with special reference to b/sub 2/-microglobulin

Journal Article · · Environ. Res.; (United States)
OSTI ID:5369368
An analysis of total protein, ..beta../sub 2/-microglobulin, glucose, and cadmium was performed on urine samples from people with Itai-itai disease and glomerular kidney disease, as well as on samples from a reference group. Blind analyses of creatinine, protein, and cadmium performed in Japanese and Swedish laboratories correlated well, but there was a tendency toward systematic differences between the laboratories' analyses of creatinine and protein. Within the range of the samples analyzed the difference was never larger than 30%. The use of three different methods of electrophoresis of urine proteins verified that the proteinuria in Itai-itai disease is tubular. On an average, urinary ..beta../sub 2/-microglobulin excretion among Itai-itai disease patients was 100 to 300 times higher than among the reference group, whereas total protein excretion was only 7 to 17 times higher. In a group of women with different degrees of cadmium exposure urinary excretion of proteins was evaluated with qualitative determination of protein, electrophoresis, and radioimmunoassay of ..beta../sub 2/-microglobulin. At slightly elevated ..beta../sub 2/-microglobulin excretion the first two methods gave negative results and it was concluded that radioimmunoassay of ..beta../sub 2/-microglobulin in urine is a sensitive indicator of cadmium-induced proteinuria.
OSTI ID:
5369368
Journal Information:
Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 13:3; ISSN ENVRA
Country of Publication:
United States
Language:
English