The purpose of this study was to investigate the effects of curcumin supplementation on exercise-induced oxidative stress in humans. 10 male participants, ages 26.8±2.0 years (mean±SE), completed 3 trials in a random order: (1) placebo (control), (2) single (only before exercise) and (3) double (before and immediately after exercise) curcumin supplementation trials. Each participant received oral administration of 90 mg of curcumin or the placebo 2h before exercise and immediately after exercise. Each participant walked or ran at 65% of V˙2max on a treadmill for 60min. Blood samples were collected pre-exercise, immediately after exercise and 2h after exercise. The concentrations of serum derivatives of reactive oxygen metabolites measured immediately after exercise were significantly higher than pre-exercise values in the placebo trial (308.8±12.9 U. CARR, P<0.05), but not in the single (259.9±17.1 U. CARR) or double (273.6±19.7 U. CARR) curcumin supplementation trials. Serum biological antioxidant potential concentrations measured immediately after exercise were significantly elevated in the single and double curcumin supplementation trials compared with pre-exercise values (P<0.05). These findings indicate that curcumin supplementation can attenuate exercise-induced oxidative stress by increasing blood antioxidant capacity.

In this study, the hepatoprotective effects of the herbal preparation (HemoHIM) against acetaminopheninduced liver injury were investigated in vitro and in vivo. We investigated the messenger Ribonucleic acid expression of antioxidant factors and proinflammatory cytokines in human hepatocellular carcinoma cells treated with acetaminophen. In vivo study, ICR was divided into five groups (n=10): control, acetaminophen, HemoHIM 250, 500 mg/kg body weight and silymarin 200 mg/kg body weight, respectively. Mice were administrated acetaminophen (350 mg/kg body weight) on d 5 after sample administration. Blood samples were collected for aspartate aminotransferase, alanine transaminase assessment. Liver tissue was determined for glutathione, triglyceride, cholesterol and histopathological features. HemoHIM has significant effects in the treatment groups compared to acetaminophen group.