Abstract
Liver regeneration after partial hepatectomy (PHx) is regulated by several factors that activate or inhibit hepatocyte proliferation. Apoptosis seems to play an important role in cellular proliferation and liver regeneration. This study investigates the expression apoptosis-associated genes bcl-2 and bax, and the presence of apoptosis and cell proliferation after PHx, in normal and jaundiced rats with or without superimposed ischemia. The study included 50 male Wistar rats assigned into; five groups (10 rats each). On day 0, rats of groups II, IV, and V underwent common bile duct ligation (BDL). On day 10, total liver ischemia (TLI) (occlusion of hepatic artery and portal vein-TLI) for 30 min was performed on animals of group V. When TLI was completed, all 30 animals (of groups I, IV, and V) underwent PHx (68%). Animals of group III underwent only TLI for 30 min. Rats of groups I, IV, and V were sacrificed 24 and 48 h after PHx was completed. Rats of group II were sacrificed 10, 11, and 12 days after BDL. Rats of group III were sacrificed immediately, 24 and 48 h after TLI completion. Liver tissue was obtained and pathologic examination included: (a) H&E stain, (b) in situ hybridization (detection of bcl-2 and bax mRNA) in para...Continue Reading
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