Abstract
The aim of this study is to investigate the potential antioxidant and anti-inflammatory effects of thymoquinone (TQ) on ceruleine induced acute pancreatitis. A total of 14 male Wistar albino rats were divided into 2 groups as follows: (1) normal saline-treated group and (2) thymoquinone- treated groups. For achieving acute pancreatitis, intraperitoneal (IP) cerulein, a stable cholecystokinin (CCK) analogue, was applied in a 50 mcg/kg dose 2 times in one-hour interval in total. One hour after last ceruleine injection, IP 2 ml/kg isotonic saline solution was applied to the saline group and IP 5 mg/kg TQ was applied. The rats were sacrificed by decapitation 12 h after the last injection of last medication. Blood samples were taken, and serum interleukin-1β (IL-1β), amylase, lipase pancreatic, total antioxidant capacity (TAC), total oxidant status (TOS), and pancreatic Schoenberg scores were determined. Oxidative stress index (OSI) was calculated for each group. Results are given as mean ± SD. A value of p < 0.05 was accepted as statistically significant. SPSS for Windows v15.0 was used for statistical analyses. The increased serum amylase, lipase levels and histopathological scoring of pancreatic tissue showed that acute pancreatitis was present in both groups. Furthermore, serum IL-1β level was significantly reduced in TQ administered group (p < 0.05). Although serum TAC level was high and TOS level was low, those changes were not statistically significant. Nevertheless, OSI index, which was driven from TOS/TAC, was significantly low in TQ groups (p < 0.05). Although TQ partially ameliorated the acute pancreatitis in terms of histopathological evaluations, the main effect of it was brought about by reducing the hemorrhage in acute pancreatitis (p < 0.05). In this study, it was shown that TQ can reduce the inflammation and has a positive effect on the oxidative status of organism in inflammatory cases such as acute pancreatitis. This is consistent with partial amelioration of acute pancreatitis in rats given TQ (Tab. 2, Fig. 4, Ref. 31).
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