Measurement of oxidative stress and total antioxidant capacity in hyperthyroid patients following treatment with carbimazole and antioxidant

Hyperthyroidism is a common endocrine disorder in which the thyroid produces too many hormones, resulting in the metabolism speed up. The present study was designed to measure oxidative stress and total antioxidant capacity in hyperthyroid patients following treatment with carbimazole and antioxidants supplements. This randomized clinical trial study was conducted to compare Malondialdehyde (MDA) and total antioxidant capacity (TAC) among 25 newly diagnosed hyperthyroid patients (Group A), 25 hyperthyroid patients treated with carbimazole (Group B) and 25 hyperthyroid patients treated with carbimazole and antioxidants supplement (Group C) of both sexes. In this study, the mean serum malondialdehyde (MDA) of the three groups were 4.60 +/- 1.08 mu mol/L (Group A), 2.79 +/- 0.58 mu mol/L (Group B), and 1.57 +/- 0.29 mu mol/L (Group C). We found the mean MDA level was significantly higher in Group A than Group B and Group C. This study found the MDA level was significantly higher in hyperthyroid patients treated with carbimazole alone (Group B, 2.79 +/- 0.58 umol/L) than hyperthyroid patients treated with carbimazole and antioxidant combined (Group C, 1.57 +/- 0.29 umol/L) among the study groups (p < 0.001). The results showed that the mean serum TAC was significantly lower in newly diagnosed hyperthyroid (Group A, 527.8 +/- 78.44 umol/L] patients compared to carbimazole treated alone (Group B, 951.80 +/- 99.67 umol/L) and combination with the antithyroid drug (carbimazole) and antioxidant treated (Group C, 1113.56 +/- 121.69 umol/L). There was more improvement found in the treatment combined with the antithyroid drug (carbimazole) and antioxidant (Group C). Conventional treatment of hyperthyroid patients significantly reduced oxidative stress and elevated serum TAC but not up to normal level. Therefore, the supplementation of antioxidants could be utilized to improve thyroid function in hyperthyroid patients by boosting antioxidants and restoring oxidant-antioxidant balance. However, further studies are required to determine the optimal dosage, route of administration, and timing of antioxidant therapy needed before this supplementation could be officially recommended as adjuvant therapy.