The study was undertaken to explore whether cadmium bioaccumulation can induce oxidative stress in the uterus of rats. Cadmium (0.09, 0.9, 1.8 or 4.5mgCd/kg b.w.) was administered by gavage for 28 days. The animals were dissected on the first day and then after 90 days post exposure (second group of animals). The results show that cadmium accumulates in the uterus in a dose-dependent manner. The uterine Cd concentrations were almost the same in both groups, which is indicative of its long half-life in this organ. The accumulated cadmium caused significant changes in catalase (CAT) activity and lipid peroxidation (MDA) levels at concentrations from 0.09 to 0.35μgCd/g wet uterine tissue. In summary our results show that the induction of oxidative stress and lipid peroxidation in the uterus may play important roles in the mechanism of toxicity in this organ and may have a negative impact on reproductive processes.
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