Selenium Safeguards the Liver Against 5-Fluorouracil Induced Toxicity
The hepatotoxic effect of 5-fluorouracil (5-FU) can deprive cancer patients of its maximum therapeutic benefits. Selenium (Se) is a trace element with potential benefits in some animal models of diseases.
This study assessed the ability of Se to nullify the hepatotoxic effect of 5-FU in albino rats.
In this study, 40 adult male albino rats were grouped into A to D (each 5 rats). Rats in group A (control) were treated intraperitoneally (IP) with normal saline (0.2 mL) daily for 5 days. Rats in groups B1 to B3 were treated IP with Se (0.125, 0.25, and 0.50 mg/kg) daily for 5 days, respectively. Rats in group C were treated IP with 5-FU (20 mg/kg) daily for 5 days. Rats in groups D1to D3 were treated IP with Se with 0.125, 0.25, and 0.50 mg/kg before treatment with 5-FU (20 mg/kg) daily for 5 days, respectively. After treatment, the rats were euthanized, and their blood samples were collected and evaluated for serum liver function. Liver samples were evaluated for biochemical and histological parameters.
Liver and serum aminotransferases, gamma-glutamyl transferase, lactate dehydrogenase, alkaline phosphatase, total bilirubin, and conjugated bilirubin levels were significantly (P<0.001) high in 5-FU-treated rats in comparison to the control group. Liver glutathione peroxidase, superoxide dismutase (SOD), catalase, and glutathione levels were significantly (P<0.001) low whereas the malondialdehyde level was significantly (P<0.001) high in 5-FU-treated rats compared with the control group. Moreover, hepatocyte necrosis was observed in 5-FU-treated rats.
Nonetheless, 5-FU-induced hepatotoxicity was significantly nullified in rats supplemented with Se (0.125 mg/kg, P<0.05; 0.25 mg/kg, P<0.01, and 0.5 mg/kg, P<0.001) in a dose-dependent fashion in comparison to 5-FU-treated rats. Thus, Se may have a clinical benefit in 5-FU-induced hepatotoxicity
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