Yangkyuksanhwa-Tang Attenuates Ischemic Brain Injury in a Focal Photothrombosis Stroke Model

국문 초록 (Abstract)

양격산화탕은 9가지의 약재로 구성된 처방으로 한의학적 뇌졸중 치료에 가장 널리 사용되는 처방 중 하나이며, 주로 사상체질이론의 소양인 뇌졸중 치료에 적용된다. 본 연구는 실험동물을 이용한 뇌졸중에 대한 양격산화탕의 효과에 대한 연구가 전무하여, photothrombosis로 유발된 허혈성 마우스모델을 이용하여 양격산화탕의 효과를 살펴 보았다. 동물행동학적 변화와 더불어 뇌손상에 미치는 영향을 뇌경색 용적에 대한 조직학적 검색 및 신경염증과 신생세포에 대한 면역조직화학적 검색으로 살펴 보았다. 동물행동학적 결과로 보아, 양격산화탕은 뇌허혈에 의해 손상된 운동기능, 즉 wire grip과 rotarod test에 의한 운동조정과 균형 능력 등에 대한 기능적 회복을 보였으며, 이는 조직학적 검색으로 관찰된 뇌경색 용적의 축소를 동반하였다. 면역조직화학적 결과를 보면, 양격산화탕은 tumor necrosis factor-α와 myeloperoxidase 면역반응세포의 수를 현저히 감소시켰다. 이와 반대로 양격산화탕은 glial fibrillary acidic protein와 ionized calcium-binding adapter molecule 1 면역반응세포의 수를 현저히 증가시켰다. 또한 양격산화탕은 Ki67/doublecortin 면역반응세포의 수를 현저히 증가시켰다. 이상의 결과로 보아, 양격산화탕은 항염증, astrocyte와 microglia의 활성화 및 신경세포의 증식을 통해 뇌경색 용적을 감소시키며, 이는 뇌허혈성 운동장애에 대한 완화 효과로 이어 지는 것을 알 수 있다. 따라서 양격산화탕은 뇌손상에 대한 신경기능적 완화효과를 보여 줌으로서 뇌졸중 환자에 대한 유효한 치료제로 사료된다.

다국어 초록 (Multilingual Abstract)

Yangkyuksanhwa-Tang (YKSH), consisting of nine different herbs, is commonly used in Soyangin-type individuals with stroke, based on the Sasang Constitution Theory in Korea. However, no evidence has yet confirmed a beneficial effect of YKSH in ischemic stroke treatment. In this study, we investigated the effects of YKSH on ischemic brain injury in a mouse model of cerebral ischemia. Focal cerebral ischemia in mice was induced by photothrombosis, and behavioral recovery was evaluated. Infarct volume, inflammation, and newly generated cells were evaluated by histology and immunochemistry. YKSH treatment resulted in a significant recovery from the motor impairments induced by focal cerebral ischemia, as determined with wire grip and rotarod tests. YKSH treatment also decreased the infarct volume and the number of cells positive for tumor necrosis factor-α and myeloperoxidase when compared with a vehicle-treated control group. By contrast, YKSH treatment considerably increased the number of cells positive for glial fibrillary acidic protein and ionized calcium-binding adapter molecule 1, as well as the number of cells doubly positive for Ki67/doublecortin when compared with the vehicle-treated group. These results suggest that YKSH treatment attenuated the infarct size by anti-inflammatory action, astrocyte and microglia activation, and neuronal proliferation, thereby facilitating neurofunctional recovery from a cerebral ischemic assault. YKSH could therefore be a potential treatment for neurofunctional restoration of the injured brains of patients with stroke.

목차 (Table of Contents)

• Introduction
• Materials and Methods
• Results
• Discussion
• References
• 초록

참고문헌 (Reference)

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