title: The effect of ursodeoxycholic acid on liver regeneration after partial hepatectomy in rats with non-alcoholic fatty liver disease.
abstract: OBJECTIVE
  To investigate the effect of ursodeoxycholic acid (UDCA) on liver regeneration following partial hepatectomy in rats with non-alcoholic fatty liver disease (NAFLD).
  
  
  METHODS
  UDCA was administered to seven rats (group 1) and physiological saline was administered both to seven rats (group 2) with NAFLD and to seven rats with normal livers (group 3). All rats underwent two-thirds hepatectomy and the remnant liver tissues were removed 48 h later. Mitotic index (MI) and levels of proliferating cell nuclear antigen (PCNA), glutathione (GSH) and malondialdehyde (MDA) were assayed.
  
  
  RESULTS
  MI and PCNA levels in group 2 were significantly lower than in groups 1 and 3, but the values in groups 1 and 3 were similar. The GSH levels of group 2 were significantly lower than those of group 3 in the hepatectomy tissues, and lower than those of groups 1 and 3 in the remnant tissues. The differences between GSH levels in groups 1 and 3 were not significant. MDA levels in hepatectomy and remnant tissues were significantly higher in group 2 compared to groups 1 and 3; values in groups 1 and 3 were similar.
  
  
  CONCLUSIONS
  UDCA increases regeneration after partial hepatectomy in rats with NAFLD, possibly due to an attenuating effect on oxidative stress.
authors.affiliation: Second Department of General Surgery, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey.
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Uzun
authors.forename: Neset
authors.initials: N
authors.lastname: Koksal
authors.forename: Suat
authors.initials: S
authors.lastname: Aktas
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Gunerhan
authors.forename: Huseyin
authors.initials: H
authors.lastname: Kadioglu
authors.forename: Nevra
authors.initials: N
authors.lastname: Dursun
authors.forename: Ahmet Ozer
authors.initials: AO
authors.lastname: Sehirli