Impact of GLP-1 analogue on oxidative damage and hepatic regeneration in experimental 70% hepatectomy model

Abstract

Background/Aims: The purpose of our study is researching into impact of glucagon like peptide 1 (GLP 1) analogue on liver regeneration after major hepatectomy. Methodology: 24 wistar albino rats were consecutively divided into 3 groups. Group 1: Control (sham) group day 14 (n=8), Group 2: Liver resection group day 14 (n=8); 70% Liver resection was performed, Group 3: Study group day 14 (n=8); Subsequent to performing 70% liver resection, GLP-1 analogue was administered 2 times a day (10 mu gr/70 kg x 2 times). After 14 day, rats were sacrificed. Oxidative stress and antioxidant enzymes and mitochondrial permeability transition, cytochrome-c, Bax, Bcl-2, caspase-3, caspase-8 and caspase-3 activity were examined. Results: 70% Liver resection induced oxidative stress of liver tissue was ameliorated by GLP 1 induction. Administration of GLP increased Bcl-2 expression. Decreased expression of cytochrome-c was accompanied by a decrease caspase-3, caspase-8, and Bax expression and caspase-3 activity. Conclusions: Glp 1 induction plays a regenerative role in the major hepatectomy. This effect is dependent on modulation of the antiapoptotic and antioxidative pathways by GLP 1 expression.