Öz
In this study, the effect of coenzyme Q10 (CoQ10) on nitric oxide (NO) and total antioxidant (TAS) capacity in rats for which experimentally hypothyroidism was induced through PTU was investigated. A total of 32 healthy male Wistar Albino rats weighing 300-350g, approximately 12 weeks old, were used as animal material in the study. . Rats were divided into 4 experimental groups as control (K), Coenzyme Q10 (C), Hypothyroidism (H), and Coenzyme Q10 + Hypothyroidism (CH). During the trial period of three weeks, 3mg CoQ10 (10mg/kg/day) was dissolved in 0.3 ml of maize oil and intraperitoneally administered for each animal in group C. In group H, PTU has added to drinking water daily at a weight/volume (w/v) ratio of %0.05. In the HC group, coenzyme Q10 was administered intraperitoneally and PTU was administered with drinking water at a rate of %0.05. TT4, TT3, and TSH levels were determined in serum samples and NO and TAS levels in plasma samples. In the present study; the highest plasma NO level among the groups was determined in group H (p<0.05) and there was no significant difference between other groups (H, C, HC) (p>0.05). The plasma TAS value of group H was found to be significantly higher than the same value in the K, C and HC groups (p<0.05). The plasma TAS level in group C had no difference from the same value in the HC group (p>0.05), although it was higher than the same value of group K (p<0.05). As a result, it was found to cause oxidative stress in hypothyroidism-induced rats with a particular increase in plasma NO levels, and CoQ10 was found to be effective in normalizing the increased plasma NO level due to hypothyroidism.