Oxidative Stress and Cell Apoptosis in Caprine Liver Induced by Molybdenum and Cadmium in Combination

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• 作者：Fan Yang ; Caiying Zhang ; Yu Zhuang ; Xiaolong Gu…
• 刊名：Biological Trace Element Research
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：173
• 期：1
• 页码：79-86
• 全文大小：1,189 KB
• 刊物主题：Biochemistry, general; Biotechnology; Nutrition; Oncology;
• 出版者：Springer US
• ISSN：1559-0720
• 卷排序：173

文摘

To investigate the effects of co-exposure to molybdenum (Mo) and cadmium (Cd) on oxidative stress and cell apoptosis in caprine livers, 36 Boer goats were randomly divided into four groups with nine goats in each group. Three groups were randomly assigned with one of three oral treatments of CdCl₂ (0.5 mg Cd kg−1·BW) and [(NH₄)₆Mo₇O₂₄·4H₂O] (15 mg Mo kg−1·BW, 30 mg Mo kg−1·BW, 45 mg Mo kg−1·BW), while the control group received deionized water. Liver tissues on days 0, 25, and 50 were subjected to determine antioxidant activity indexes and the messenger RNA (mRNA) expression levels of ceruloplasmin (CP), cysteinyl aspartate-specific proteinase-3 (caspase-3), second mitochondria-derived activator of caspases (Smac), and cytochrome-C (Cyt-C) genes. The results showed that significant reductions were observed in total antioxidant capacity (T-AOC) and total superoxide dismutase (T-SOD) activities (P < 0.05), while activities or contents of malondialdehyde (MDA), nitric oxide (NO), and nitric oxide synthase (NOS) were increased (P < 0.05). The mRNA expression levels of CP, caspase-3, Smac, and Cyt-C genes were upregulated (P < 0.05). In addition, histopathological lesions showed different degrees of vacuolar degeneration and edematous and mitochondrial swelling. The results suggest that co-exposure to Mo and Cd could induce oxidative stress and cell apoptosis possibly associated with mitochondrial intrinsic pathway in goat liver and show possible synergistic effects between the two elements.KeywordsMolybdenumCadmiumLiverApoptosisGoat