节后轴突切断后小鼠颈上神经节细胞树突几何形状的变化。
Changes in the dendritic geometry of mouse superior cervical ganglion cells following postganglionic axotomy.
作者信息
Yawo H
机构信息
Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, Missouri 63110.
出版信息
J Neurosci. 1987 Nov;7(11):3703-11. doi: 10.1523/JNEUROSCI.07-11-03703.1987.
Abstract
The dendritic geometry of mouse superior cervical ganglion cells was studied over periods of up to 3 months after postganglionic axotomy. Intracellular injection of HRP showed that total dendritic length and complexity were reduced by 60-70%, on average, among cells whose postganglionic axons had been crushed 2 weeks before. Both parameters gradually recovered in parallel with ganglion cell reinnervation of the periphery. These results indicate that neuronal interactions with peripheral targets influence the configuration of ganglion cell dendrites throughout life. The implications of this conclusion are discussed.
摘要
在节后轴突切断术后长达3个月的时间里，对小鼠颈上神经节细胞的树突形态进行了研究。细胞内注射辣根过氧化物酶（HRP）显示，节后轴突在2周前被切断的细胞中，树突总长度和复杂性平均降低了60 - 70%。随着神经节细胞对外周的重新支配，这两个参数逐渐平行恢复。这些结果表明，神经元与外周靶标的相互作用在整个生命过程中都会影响神经节细胞树突的形态。本文讨论了这一结论的意义。
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