Effects of different treatment subjects of Lactiplantibacillus plantarum SCS5 on oxidative stress in type 2 diabetic mice

ABSTRACTThe purpose of this study was to determine the effect of different subjects from Lactiplantibacillus plantarum SCS5 (L. plantarum SCS5) on type 2 diabetes by modulating oxidative stress levels.The normal group (NG) and the model group (MG) of mice were fed normally, while the three test groups (LP1,LP2,LP3) received 10 ml/kg (body weight) of the L. plantarum SCS5 suspension, intracellular material, or heat-killed intracellular material daily for 10 weeks. The weight loss and the increase in blood glucose were alleviated in the LP2 and LP3 groups. Insulin, catalase, superoxide dismutase, and glutathione peroxidase significantly increased in the LP3 group of mice compared with the MG group. Additionally, the pathological sections showed that the lesions in the LP3 group were less severe than those in the MG group. These findings indicate that the heat-killed intracellular L. plantarum SCS5 material was most effective in alleviating oxidative stress in type 2 diabetic mice.