Effects of Tempol on Experimental Acute Necrotizing Pancreatitis Model in Rats

Aim: We aimed to investigate the effects of Tempol on local organ damage in an experimental acute pancreatitis model. Methods: This experimental study was conducted on 40 male Wistar- albino rats. The animals were randomly allocated into four groups: (i) Sham-operated group, laparotomies and cannulations of the pancreatic duct without acute necrotizing pancreatitis (ANP) (n=10); (ii) Sham + Tempol group, identical to group 1 except for intravenous tempol treatment for 4hours (n = 10); (iii) ANP group, glycodeoxycholic acid was infused into the pancreatic duct and cerulein was infused intravenously for 6hours for development of ANP (n=10); and (iv) ANP + Tempol treated group, in addition to the procedure in group 3, rats were administered tempol intravenously for 4hours (n = 10). Injury of the pancreas was evaluated histopathologically. Malondialdehyde and myeloperoxidase levels of the pancreatic tissue, blood gas analysis, leukocyte and hematocrit levels were measured. Wet/dry weight of pancreatic tissue was also measured. Results: Serum amylase levels, pancreatic tissue malondialdehyde and myeloperoxidase levels, wet/dry weight ratio, pancreatic edema, acinar necrosis, fat necrosis and hemorrhage, inflammation and perivascular infiltration were significantly lower in the ANP + Tempol group compared with the ANP group. Conclusion: Tempol infusion reduced local organ damage due to acute necrotizing pancreatitis in this experimental study. These findings demonstrate that tempol has protective effects on local organ damage due to acute necrotizing pancreatitis in rats.