جستجوی مقالات مرتبط با کلیدواژه « پراکسیدان » در نشریات گروه « پزشکی »

It has been found that a high-fat diet increases the oxidative stress of the heart, which may be effective in the pathogenesis of cardiovascular diseases. The present study aimed to evaluate the effects of a high-fat diet and high-intensity interval training (HIIT) on the levels of glutathione peroxidase (GPX) and malondialdehyde (MDA) in heart tissue of rats.

In this experimental study, 21 male Wistar rats within the age range of 12-14 weeks were randomly assigned to three groups, including normal diet (n=7), high-fat diet (n=7), and high-fat diet+HIIT (n=7). Animals in the high-fat diet groups received a high-fat diet for 23 weeks. At the same time, the high-fat diet+HIIT group received a high-fat diet followed by performing the HIIT protocol on the treadmill three times a week in the final eight weeks. At the end of the intervention, the levels of GPX enzyme and MDA in heart tissue were assessed using the enzyme colorimetric method. The data were analyzed by one-way analysis of variance followed by post hoc Tukey test at the significant level of P<0.05.

The results demonstrated no significant changes in GPX (P=0.14) and MDA (P=0.214) heart tissue levels in all three groups: normal diet, high-fat diet, and high-fat diet+HIIT.

It seems that performing eight weeks of HIIT has no effect on oxidative stress markers in rats with a high-fat diet.

Influence of physical activity with supplement consumption on the decrease of free radicals effects is not well known during exercise. Purslane is one of the richest sources of omega-3 fatty acid. Thus, the purpose of this study was to investigate the effect of 8-week exercise with Purslane consumption on peroxidant and antioxidants indicators (MDA, SOD, CAT) in women with type 2 diabetes. 28 sedentary women with type 2 diabetes participated in this study with average age of 50 years and with no history of regular exercise that were randomly divided into 4 groups: control (C), exercise (E), supplementation (S) and exercise + supplementation (E+S). Training programs were 60-75 minutes of aerobic exercise, 3 times in week with 50-70% of maximal heart rate. S and E+S groups consumed 5gr of Purslane seeds with lunch and performed aerobic exercise after 3 hours. Also, 2/5 gr Purslane was consumed with dinner. Blood samples were taken in two phases (before and after 8 weeks) following 12 to 14 hours of being fasted. MDA decreased significantly, but SOD and CAT levels increased significantly in E, S, E+S groups after 8 weeks (P> 0/05). Also there was a significant difference between MDA in E and E+S groups after 8 weeks (P=0/015). The results showed that regular aerobic exercise with Purslane consumption can improve peroxidant and antioxidant balance in women with type 2 diabetes and prevent exercise-induced oxidative stress and also diabetes.