The mechanism of epileptic seizure has not been identified clearly. Ex-ercise can play a role of antioxidants against oxidative stress. In the present study, the neuroprotective effects of preconditioning exercise on epileptic seizure were investigated with focusing on antioxidants activity in the hippocampus. Rats were allocated to the following groups: saline control group, kainic acid control group, and previous exercise and kainic acid group. Rats in the previous exercise and kainic acid group were subjected to treadmill exercise 5 days a week for 4 weeks. After 48 hr of exercise period, rats in the kainic acid control group and previ-ous exercise and kainic acid group were injected with kainic acid. The number of neuronal nitric oxide synthase-positive cells and the level of nitrite in hippocampus were increased and the expressions of superox-ide dismutase-1, superoxide dismutase-2, and catalase in hippocampus were reduced in kainic acid control group compared with saline control group. By contrast, in the previous exercise and kainic acid group, the number of neuronal nitric oxide synthase-positive cells and the level of nitrite were decreased and the expressions of superoxide dismutase-1, superoxide dismutase-2, and catalase were increased compared with the kainic acid control group. Preconditioning exercise may have neu-roprotective effects against oxidative stress via increased antioxidant activity in the hippocampus of epileptic seizure.
목차
Abstract INTRODUCTION MATERIALS AND METHODS Animals Exercise protocol Epileptic seizure Tissue preparation Immunohistochemistry Western blotting Nitrite assay Statistical analysis RESULTS Effects of previous exercise on the number ofnNOS-positive cells in dentate gyrus Effects of previous exercise on nitrite level in hippocampus Effects of previous exercise on SOD-1, SOD-2, and CAT expressions in hippocampus DISCUSSION CONFLICT OF INTEREST ACKNOWLEDGMENTS REFERENCES
Sam-Jun Lee [ Department of Physical Education, College of Health, Social Welfare, and Education, Tongmyong University, Busan, Korea ]
Corresponding author