Histological study of the liver and biochemistry of the blood of Wistar rats following ligature of right hepatic duct1 Estudo histológico do fígado e bioquímico do sangue de ratos após ligadura do ducto hepático direito

Purpose: To observe the histological alterations in the liver and biochemistry in the blood that can happen in Wistar rat, after the ligature of right hepatic duct. Methods: In this study were used rats (n=46) of Wistar pedigree. The animal groups (n=46) were distributed in 6 experimented sub-groups (n=6). It was held a ligature surgery of the right hepatic duct and euthanasia in 7, 14, 21, 28, 60 and 90 days and the biochemistry control group (n=10), that animals had 2ml of their blood taken by cardiac puncture for biochemistry study with value analyses of bilirubins, transaminasis, lactic desidrogenasis, alkaline phophatase and gamma-glutamil-transferase. Given the expected time of each group, the animals were submitted to anesthesia procedure and cavity re-opening, being held intra-cardiac puncture and with 2ml blood collected for biochemistry analyses. It was proceeded the liver resection, being the liver putted in formol solution to 10% for a period of 24 hours and taken to the histology. Results: It was not possible to identify results that express significant differences as the existence of alterations histological and biochemistrily between the different groups. Conclusion: At the end of the study, it was not possible to identify histological and biochemistrily alterations that express significant differences between livers of the animals from the right linked hepatic duct and the animals of the control group.