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- W122390622 abstract "Young and old male Fischer 344 rats were fed a control diet or a lactose diet. After four weeks rats were gavaged with approximately 6.24 uCl {sup 67}Cu, placed in metabolism cages, and fed their respective diets for an additional two weeks. Daily whole body, urine and fecal radioactivity measurements were made. Rats were killed on day 42 and livers removed for radioactivity determination. Diet had no effect on whole body retention of {sup 67}Cu in the old rats; approximately 20% of the initial dose was retained by the end of the study. In the young rats, however, lactose appeared to enhance initial {sup 67}Cu retention; by day three young control rats retained only 30% of the initial dose, while the young lactose rats retained about 50%. Retention of {sup 67}Cu at the end of the study was approximately 15% and 20% for young control and young lactose rats, respectively. During the first four days post dosing, cumulative fecal {sup 67}Cu excretion was approximately 83% for young control rats and 69% for young lactose rats indicating enhancement of {sup 67}Cu absorption by lactose in the young rats. For old rats cumulative {sup 67}Cu excretion in feces was about 50% regardlessmore » of diet. Cumulative urinary {sup 67}Cu excretion was approximately 6% and 8% for young control and lactose rats, respectively vs about 11% for old rats. {sup 67}Cu retention in liver was greater in old rats regardless of diet. The early increase in {sup 67}Cu absorption after a bolus dose may have therapeutic implications. In light of current concern regarding Cu-carbohydrate interactions, the apparent enhancement Cu retention by lactose in young rats deserves further attention.« less" @default.
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- W122390622 date "1991-03-15" @default.
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- W122390622 title "Effect of age and lactose on sup 67 Cu utilization in rats" @default.
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