淸肺瀉肝湯이 MCAO에 의한 흰쥐의 뇌허혈 손상에 미치는 영향
Effect of Chungpaesagan-tang on Cerebral Ischemic Damage Induced by MCAO in Rats
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This study aimed to validate neuroprotective effect of Chungpaesagan-tang on the early stage of cerebral ischemic damage. Cerebral ischemic damage was induced by the middle cerebral artery occlusion (MCAO) for 2 hours in the Sprague-Dawley rats. Water extract of Chungpaesagan-tang(8.7g/kg) was administered orally twice at 1 and 4 hours after the MCAO. Neurological score was tested at 3 and 24 hours after the MCAO and Chungpaesagan-tang administration. At 24 hours after the MCAO, infarct volume and edema ratio was evaluated with the TTC staining. Apoptotic cell death in cerebral cortex and caudate putamen was observed with cresyl violet staining and TUNEL labeling. Bax expression in the MCAO rat brain was stained with immunohistochemistry. Chungpaesagan-tang improved neurological and behavioral impairment of the MCAO rats and reduced infarct area, infarct volume and brain edema formation. Chungpaesagan-tang attenuated cell death percentage in cortex penumbra and reduced TUNEL positive cells in cortex penumbra and in caudate putamen of the MCAO rats. Chungpaesagan-tang reduced Bax positive neurons in caudate putamen and reduced c-Fos positive neurons in cortex penumbra of the MCAO rats. Chungpaesagan-tang intensified neuronal HSP72 expression in cortex penumbra of the MCAO rats. In results, Chunpaesagan-tang reduces infarct volume and edema formation through anti-apoptotic effect. This result suggests that Chunapaesagan-tang has an adequate neuroprotective effect on the early stage of cerebral ischemic damage.
Abstract
This study aimed to validate neuroprotective effect of Chungpaesagan-tang on the early stage of cerebral ischemic damage. Cerebral ischemic damage was induced by the middle cerebral artery occlusion (MCAO) for 2 hours in the Sprague-Dawley rats. Water extract of Chungpaesagan-tang(8.7g/kg) was administered orally twice at 1 and 4 hours after the MCAO. Neurological score was tested at 3 and 24 hours after the MCAO and Chungpaesagan-tang administration. At 24 hours after the MCAO, infarct volume and edema ratio was evaluated with the TTC staining. Apoptotic cell death in cerebral cortex and caudate putamen was observed with cresyl violet staining and TUNEL labeling. Bax expression in the MCAO rat brain was stained with immunohistochemistry. Chungpaesagan-tang improved neurological and behavioral impairment of the MCAO rats and reduced infarct area, infarct volume and brain edema formation. Chungpaesagan-tang attenuated cell death percentage in cortex penumbra and reduced TUNEL positive cells in cortex penumbra and in caudate putamen of the MCAO rats. Chungpaesagan-tang reduced Bax positive neurons in caudate putamen and reduced c-Fos positive neurons in cortex penumbra of the MCAO rats. Chungpaesagan-tang intensified neuronal HSP72 expression in cortex penumbra of the MCAO rats. In results, Chunpaesagan-tang reduces infarct volume and edema formation through anti-apoptotic effect. This result suggests that Chunapaesagan-tang has an adequate neuroprotective effect on the early stage of cerebral ischemic damage.
참고문헌 (40)
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