Faseranalyse der vorderen und hinteren Rückenmarkswurzeln des Menschen auf Grund unterschiedlicher Acetylcholinesteraseaktivität
作者:
W. Zenker,
M. Stelzig,
S.C. Sulzgruber,
A. Neumann,
期刊:
Cells Tissues Organs
(Karger Available online 1979)
卷期:
Volume 103,
issue 3
页码: 319-326
ISSN:1422-6405
年代: 1979
DOI:10.1159/000145030
出版商: S. Karger AG
关键词: Acetylcholinesterase;Spinal roots;Motor axons
数据来源: Karger
摘要:
Marked differences in the AChE activity of myelinated nerve fibres of ventral and dorsal roots could be established in human post mortem material. After a fixation time of 3 h and a critical incubation period of 24 h, in the mean 96% of the myelinated ventral root but only 4% of dorsal root fibres showed reaction product, detectable by the light microscope. The percentage of stained fibres varies, to some extent, in the different segments. Groups of very thin myelinated fibres within the ventral roots between the segments C-8 and L-3, showing a conspicuous high enzyme activity, are interpreted as pre-ganglionic sympathetic fibres; similar elements in the sacral ventral roots may represent parasympathetic fibres. The method of Karnovsky, applied under conditions established in this study, can be used for analysis of fibre types in a given human peripheral nerve.
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