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The aim of the present research was to investigate the effect of fish oil, crude Nigella sative oil and combined fish oil/Nigella sative volatile oil as hepato-regenerative and renal protective supplements. The oils were administered as emulsions to rat model with liver injury induced by CCl 4 . Plasma activities of transaminases (AST and ALT) were evaluated as liver function indicators, while plasma creatinine and urea and creatinine clearance were determined as markers of kidney function. Plasma malondialdehyde (MDA), nitrite (NO) and tumor necrosis factor-α (TNF-α) were estimated to assess the exposure to oxidative stress and subsequent inflammation. Liver fat was extracted and their fatty acids´ methyl esters were determined using gas chromatography. Results showed that plasma activities of AST and ALT were significantly higher in CCl 4 control group compared to control healthy group. Plasma levels of creatinine and urea increased significantly in CCl 4 control, while creatinine clearance was reduced significantly in the same group. All rat treated groups given the three oil emulsions showed improvement in liver function pointing to the initiation of liver regeneration. The combination of fish oil/Nigella sative volatiles showed the most promising regenerative activity. Oxidative stress and inflammation which were increased significantly in CCl 4 control group showed improvement on administration of the three different oil emulsions. Fatty acids methyl ester of liver fat revealed that rats treated with fish oil/Nigella sative volatile oil presented the highest content of unsaturated fatty acids (45.52% ± 0.81) while fish oil showed the highest saturated fatty acids (53.28% ± 1.68). Conclusion; Oral administration of oil emulsions of native fish oil, Nigella sative crude oil and combined fish oil/Nigella sative volatile oil reduced liver and kidney injury in rat model of CCl 4 through exerting anti-inflammatory and antioxidant activity. Fish oil/Nigella sative volatile oil emulsion was the most promising hepato-regenerative and reno-protective formula among the different groups.

journal of oleo science

Hepatic Regeneration and Reno-Protection by Fish oil, &lt;i&gt;Nigella sativa&lt;/i&gt; Oil and Combined Fish Oil/&lt;i&gt;Nigella sativa&lt;/i&gt; Volatiles in CCl&lt;sub&gt;4&lt;/sub&gt; Treated Rats