摘要
Vascular dementia produced by permanent ligation of bilateral common carotid arteries involves progressive deterioration of intellectual and cognitive function in rats, which are closely associated with the hippocampus. This study used immunohistochemical analysis to detect the expression of glial fibrillary acidic protein and nestin in the hippocampus in a vascular dementia model. The results revealed that both glial fibrillary acidic protein and nestin expression were increased 1 day after permanent ligation of the bilateral common carotid arteries, compared with a sham-operated group. The expression of glial fibrillary acidic protein peaked at 7 days post-surgery. The expression of nestin was a little weaker than that of glial fibrillary acidic protein, and peaked at 14 days （P 〈 0.01）. The expression of both proteins slightly decreased at 21 and 28 days, accompanied by recovery of cerebral blood flow. In conclusion, this study demonstrated that glial fibrillary acidic protein and nestin exhibited dynamic expression in the rat hippocampus after permanent ligation of bilateral common carotid arteries. This finding suggests that dynamic alterations in protein expression play an important role in the pathogenesis of vascular dementia.
Vascular dementia produced by permanent ligation of bilateral common carotid arteries involves progressive deterioration of intellectual and cognitive function in rats, which are closely associated with the hippocampus. This study used immunohistochemical analysis to detect the expression of glial fibrillary acidic protein and nestin in the hippocampus in a vascular dementia model. The results revealed that both glial fibrillary acidic protein and nestin expression were increased 1 day after permanent ligation of the bilateral common carotid arteries, compared with a sham-operated group. The expression of glial fibrillary acidic protein peaked at 7 days post-surgery. The expression of nestin was a little weaker than that of glial fibrillary acidic protein, and peaked at 14 days （P 〈 0.01）. The expression of both proteins slightly decreased at 21 and 28 days, accompanied by recovery of cerebral blood flow. In conclusion, this study demonstrated that glial fibrillary acidic protein and nestin exhibited dynamic expression in the rat hippocampus after permanent ligation of bilateral common carotid arteries. This finding suggests that dynamic alterations in protein expression play an important role in the pathogenesis of vascular dementia.
基金
the National Natural Science Foundation of China, No. 30973154
Chongqing Science and Technology Commission Foundation, No. 2009BB5270
Chongqing Municipal Education Commission Foundation, No. KJ090301
