Ataturk Universitesi Veteriner Bilimleri Dergisi, cilt.13, sa.1, ss.84-91, 2018 (Scopus)
Abstract: In this study, the effects of thymoquinone implementation to total antioxidant status (TAS), total oxidant status
(TOS) and oxidative stress index (OSI) were investigated in liver and kidney tissues of diabetic rats induced with STZ. The 24
male Wistar-Albino rats, weighing between 200-250 g were used as material. Rats were divided into four groups, each
consisting of six rats; control (C), thymoquinone (TQ), diabetes (D) and diabetes+ thymoquinone (DT) groups. To induce
diabetes, a single dose of 45mg/kg streptozotocin (STZ) were administered intraperitoneally (ip) to the rats in groups D and
DT. TQ was administered to the rats in DT and TQ groups as 30 mg/kg/21 days by oral gavage. The values of TAS and TOS
were measured in liver and kidney tissues at the end of the study. OSI was calculated according to TAS and TOS levels. TAS
value in liver tissue was found to be the lowest in the diabetes group (P≤0.05). It was noticed that there was no difference
between K and TQ groups with DT group. No difference was detected among groups in terms of liver TOS. It was determined
that the OSI in the liver increased in all groups compared to the control (P≤0.05), the highest value was determined in group
D, it approached to the control by partially decrease after the application of TQ. While TAS and TOS levels in kidney tissue
were found to be the highest in the TQ group and the lowest in the diabetic group (P≤0.05), there was no difference between
the other groups. There was no significant difference among the groups in the kidney OSI. As a result, it was determined that
TOS, TAS values in liver and kidney tissues of experimental diabetic rats were affected from the TQ application and the OSI
value in the liver of the STZ treated groups approached that of the control group, after TQ application.
Keywords: Oxidative stress index, Streptozotocin, Thymoquinone, Total antioxidant capacity, Total oxidant capacity