猫膈运动神经元的产后发育

Postnatal development of phrenic motoneurons in the cat.

作者信息

Cameron W E, Brozanski B S, Guthrie R D

机构信息

Department of Pediatrics, University of Pittsburgh and Magee-Womens Hospital, PA 15213.

出版信息

Brain Res Dev Brain Res. 1990 Jan 1;51(1):142-5. doi: 10.1016/0165-3806(90)90269-5.

DOI:10.1016/0165-3806(90)90269-5

PMID:2297892

Abstract

The postnatal growth of phrenic motoneurons in the cat was studied using retrograde transport of horseradish peroxidase (HRP). The mean somal surface area of these developing motoneurons increased 2.5 times from day 3 to adult while the mean somal volume increased four-fold. This change in mean somal surface area during postnatal development was found to be correlated with the change in mean axonal conduction velocity measured from phrenic motoneurons.

摘要

利用辣根过氧化物酶（HRP）逆行运输法对猫膈运动神经元的出生后生长进行了研究。这些发育中的运动神经元的平均胞体表面积从出生后第3天到成年增加了2.5倍，而平均胞体体积增加了四倍。研究发现，出生后发育过程中平均胞体表面积的这种变化与从膈运动神经元测得的平均轴突传导速度的变化相关。