• Chin. Med. Sci. J. · Jun 2004

    Proliferation and differentiation of neural stem cells in adult rats after cerebral infarction.

    • Bo Zhang, Ren-Zhi Wang, Yong Yao, Zhi-Hai Liu, Zhi-Gang Lian, Yu-Jie Zou, and Yu-Kui Wei.
    • Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730.
    • Chin. Med. Sci. J. 2004 Jun 1; 19 (2): 73-7.

    ObjectiveTo investigate proliferation and differentiation of neural stem cells in adult rats after cerebral infarction.MethodsModels of cerebral infarction in rats were made and the time-course expression of bromodeoxyuridine (BrdU), Musashi1, glial fibrillary acidic protein (GFAP), and neuronal nuclear antigen (NeuN) were determined by immunohistochemistry and immunofluorescence staining. BrdU and Musashi1 were used to mark dividing neural stem cells. GFAP and NeuN were used to mark differentiating neural stem cells.ResultsCompared with controls, the number of BrdU-labeled and BrdU-labeled with Musashi 1-positive cells increased strikingly 1 day after cerebral infarction; approximately 6 fold with a peak 7 days later; markedly decreased 14 days later, but was still elevated compared with that of controls; decling to the control level 28 days later. The number of BrdU-labeled with GFAP-positive cells nearly remained unchanged in the hippocampus after cerebral infarction. The number of BrdU-labeled with NeuN-positive cells increased strikingly 14 days after cerebral infarction, reached maximum peak in the hippocampus 28 days after cerebral infarction in rats.ConclusionCerebral infarction stimulate proliferation of inherent neural stem cells and most proliferated neural stem cells differentiate into neurons.

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