Beneficial effects of Omega-3 polyunsaturated fatty acids in treatment of non-alcoholic fatty liver disease in rats.

Nonalcoholic fatty liver disease (NAFLD) is sickness with different causes and it is the most hepatic illness. The objective of this work is to investigate the bimolecular changes in a model of high fat diet induced- NAFLD in rats. Also, the hypolipidemic, antioxidant and anti-inflammatory effects of omega-3 were clarify via evaluation of some biochemical and molecular parameters in the liver tissue of rats.Twenty one adult white albino rats were divided into three groups. Group I (Normal control): received no drugs and fed balanced diet, Group II (NAFLD- induced group): rats fed high fat diet for 8 weeks followed by normal basal ration for additional 8 weeks. Group III (NAFLD + omega-3): rats administrated omega-3 (300 mg/kg b.wt/day), orally for 8 weeks post-induction of NAFLD. The obtained results showed a significant increase in serum Total cholesterol and Triacylglycerols (TAG) concentrations, L-MDA and TAC in liver tissuewith significant up-regulation in CPT-1α, FAS, SREBP-1c, PPAR-α, Nrf2 and TAK1gene expression in NAFLD-induced rats. Treatment with Omega-3 to NAFLD induced rats potentially improved molecular hepatic cell function and oxidative alterations related to NAFLD near its normal ranges. Meanwhile, histo-pathological findings supported that Omeg-3 markedly attenuates harmful effects of NAFLD and protected liver cell. On conclusion, Omega-3 plays an important role as potent anti-oxidant, anti-obesity, anti-inflammatory via inhibition of hepatic steatosis and oxidative stress singling.