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迷路损伤增强大鼠前庭内侧核生长相关蛋白mRNA水平 被引量:1

ENHANCEMENT OF GAP-43 mRNA EXPRESSION IN THE RAT MEDIAL VESTIBULAR NUCLEUS BY LABYRINTHECTOMY
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摘要 前庭代偿是研究神经可塑性的一个理想模型。生长相关蛋白(GAP-43)在神经再生和突触重组中起重要作用。用DIG(digoxigenin)标记的GAP-43cDNA片段作探针进行原位杂交,检测了大鼠迷路损伤5、12、20和30d后前庭内侧核GAP-43mDRNA表达的变化。结果表明,迷路损毁后两侧前庭内侧核GAP-43mRNA的水平以不同的幅度和时程明显升高。这一结果表示,GAP-43mRNA水平的提高可能与前庭代偿中突触重组和神经可塑性相关。 Vestibular compensation is the most extensively investigated model forneuroplasticity. Growth-associated protein (GAP-43) mRNA plays a significant role innerve regeneration and synaptic remodeling. Using in situ hybridization with DIG(digoxigenin)-labeled GAP-43 cDNA probe, changes of GAP-43 mRNA expression inthe medial vestibular nucleus in the labyrintheectomized rats at 5, 12, 20 and 30th dayafter operation were investigated. The results clearly demonstrated that labyrinthectomyincreased GAP-43 mRNA expression to different extents and amplitudes in bilateral medialvestibular nuclei. This finding suggests that upregulation of GAP-43 mRNA expression isrelated tO regenerative sprouting, synaptic remodeling and neuroplasticity in vestibularcompensation.
出处 《生理学报》 CAS CSCD 北大核心 1998年第5期587-590,共4页 Acta Physiologica Sinica
关键词 生长相关蛋白 前庭代偿 神经可塑性 原位杂交 growth-associated protein (GAN-43) vestibular compensation neuroplasticity in situhybridization
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