Abstract

Significant decreases of the hematocrit, hemoglobin, and plasma iron levels were observed in rats receiving daily intraperitoneal injections of aluminum at a dose of 27 mg Al/kg body wt for 3 wk, as compared to untreated controls. The activity of alkaline phosphatase was also significantly lower in the treated animals as a result of the accumulation of aluminum in the liver (p<0.05). Following aluminum administration, the plasma concentrations of aluminum and copper were also significantly increased, whereas the plasma zinc levels and oxidative stress measured through thiobarbituric acid reaction products showed nonsignificant differences between the two groups (p>0.05). The erythrocyte concentrations of aluminum, copper, zinc, and iron and of superoxide dismutase activity were found to be significantly higher in the study group as compared to controls. The treated animals also showed evidence of higher oxidative stress in comparison to controls. These results suggest that erythrocyte aluminum accumulation could result in abnormal trace element homeostasis and increasing oxidative stress, which might be a mechanism of aluminum-induced anemia.

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