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1- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
2- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
2- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
Abstract:
Introduction: Epilepsy has been characterized by recurrent seizures associated with cognitive, mental, and social issues. Exercise has been well known as a non-pharmacological or complementary remedy to reduce the effective dose and side effects of pharmacological therapies. Orexin signaling pathway and brain-derived neurotrophic factor (BDNF) have an essential role in the pathogenesis of epilepsy. In this study, we investigated the effect of exercise on the modulation of the orexin-A (OXA) and BDNF signaling pathways in epileptic rats.
Methods: Male Wistar rats were divided into five groups: Normal saline (NS), seizure, physical activity (PA), PA+PTZ, and PA-PTZ. Assessment of seizure behaviors was done 30 min after any PTZ injection in the seizure, PA+PTZ, and PA-PTZ groups. Seizure behavior score (SBS) was monitored in seizure, PA+PTZ, and PA-PTZ. The expression of the OXA and BDNF in the CA1, CA3, and cortex was assayed by immunohistochemistry staining. The correlations were taken between the OXA and BDNF in different groups.
Results: SBC was reduced in the epileptic rats that had exercised. Seizure and physical activity increased the OXA expression in the seizure and PA groups. The OXA expression decreased in the CA1 and CA3 of the PA+PTZ and PA-PTZ and cortex of PA+PTZ compared to the seizure group. OXA was up-expressed in the PA-PTZ group compared to the PA+PTZ group. Seizure decreased the BDNF expression in the seizure group compared to the NS group. Physical activity elevated the BDNF expression in the CA1, CA3, and cortex of the PA group. BDNF was up-expressed in the cortex of the PA+PTZ and the CA1, CA3, and cortex of PA-PTZ. BDNF expression increased in the CA1 and CA3 of the PA-PTZ compared to the PA+PTZ. There was a significant correlation between the OXA and BDNF expression in the CA1, CA3, and cortex of the NS and seizure groups, as well as in the CA1 and cortex of the PA group.
Conclusion: Our results declared that physical activity had an amelioration effect on the seizure severity. Our finding suggested that the effect of physical activity on seizure might not rise from the interaction of the OXA and BDNF expression in epileptic rats.
Methods: Male Wistar rats were divided into five groups: Normal saline (NS), seizure, physical activity (PA), PA+PTZ, and PA-PTZ. Assessment of seizure behaviors was done 30 min after any PTZ injection in the seizure, PA+PTZ, and PA-PTZ groups. Seizure behavior score (SBS) was monitored in seizure, PA+PTZ, and PA-PTZ. The expression of the OXA and BDNF in the CA1, CA3, and cortex was assayed by immunohistochemistry staining. The correlations were taken between the OXA and BDNF in different groups.
Results: SBC was reduced in the epileptic rats that had exercised. Seizure and physical activity increased the OXA expression in the seizure and PA groups. The OXA expression decreased in the CA1 and CA3 of the PA+PTZ and PA-PTZ and cortex of PA+PTZ compared to the seizure group. OXA was up-expressed in the PA-PTZ group compared to the PA+PTZ group. Seizure decreased the BDNF expression in the seizure group compared to the NS group. Physical activity elevated the BDNF expression in the CA1, CA3, and cortex of the PA group. BDNF was up-expressed in the cortex of the PA+PTZ and the CA1, CA3, and cortex of PA-PTZ. BDNF expression increased in the CA1 and CA3 of the PA-PTZ compared to the PA+PTZ. There was a significant correlation between the OXA and BDNF expression in the CA1, CA3, and cortex of the NS and seizure groups, as well as in the CA1 and cortex of the PA group.
Conclusion: Our results declared that physical activity had an amelioration effect on the seizure severity. Our finding suggested that the effect of physical activity on seizure might not rise from the interaction of the OXA and BDNF expression in epileptic rats.
Type of Study: Original |
Subject:
Cellular and molecular Neuroscience
Received: 2023/10/15 | Accepted: 2023/10/22
Received: 2023/10/15 | Accepted: 2023/10/22
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