Michael Gbadegesin, J O Teibo, M Adegoke, G Olajire, Oyeronke A Odunola
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引用次数: 0
Abstract
D-Ribose-L-Cysteine (Riboceine)- an antioxidant supplement that may help to raise the glutathione levels by acting as a precursor for glutathione biosynthesis in biological systems. Effect of riboceine (Rb) on sodium arsenite (SA) induced hepatorenal toxicity was investigated in rats. Four groups (A-D) (six per group) were treated thus: Group A (water and normal diet only); while Group B (SA at 5 mg/kg body weight); Group C (riboceine at 10 mg/kg body weight) and Group D (riboceine and SA). The exposure to test substances lasted for a total of 14 days in each case in which pre-treatment was done with riboceine. Exposure to SA triggered a significant reduction in the entire weight and relative organ weight, increase in ALT (alanine aminotransferase), AST (aspartate aminotransferase), ALP (alkaline phosphatase) activities, decrease in liver total protein and increase in serum levels of urea and creatinine. Furthermore, SA caused a significant reduction in GSH (glutathione) level and CAT (Catalase) activity, while the LPO (lipid peroxidation) and NO (nitric oxide) levels were significantly increased. Pre-treatment with riboceine, restored the levels of the aforementioned parameters. Riboceine also promote restoration of hepatocytes and renal cells integrity. Findings from this study reaffirm the hepatorenal toxicities of sodium arsenite and show the protective role of riboceine against SA-induced toxicities. Protective effects of riboceine may be via the enhancement of the level of glutathione, a natural scavenger of free radicals.
d -核糖- l -半胱氨酸(核糖素)-一种抗氧化剂补充剂,可以作为生物系统中谷胱甘肽生物合成的前体,帮助提高谷胱甘肽水平。研究核黄碱(Rb)对亚砷酸钠(SA)所致大鼠肝肾毒性的影响。4组(A- d),每组6人,处理如下:A组(仅饮水和正常饮食);B组(SA为5 mg/kg体重);C组(核黄碱10 mg/kg体重)和D组(核黄碱加SA)。在每种情况下,用核糖素进行预处理的试验物质暴露持续了14天。暴露于SA后,大鼠的总体重和相对脏器重量显著降低,ALT(丙氨酸转氨酶)、AST(天冬氨酸转氨酶)、ALP(碱性磷酸酶)活性升高,肝脏总蛋白降低,血清尿素和肌酐水平升高。此外,SA使GSH(谷胱甘肽)水平和CAT(过氧化氢酶)活性显著降低,而LPO(脂质过氧化)和NO(一氧化氮)水平显著升高。用核糖素预处理,恢复了上述参数的水平。核黄碱还能促进肝细胞和肾细胞完整性的恢复。本研究结果重申了亚砷酸钠的肝肾毒性,并显示了核糖素对sa诱导的毒性的保护作用。核糖素的保护作用可能是通过提高谷胱甘肽的水平,一种天然的自由基清除剂。