End-plate growth exceeds nerve terminal growth in juvenile mice.

Abstract:

:An electron microscopic investigation of neuromuscular synapses of the tensor fasciae latae muscle in juvenile mice was carried out to determine the relationship between the presynaptic (nerve terminal) and postsynaptic (end-plate plaque) elements during the major phase of postnatal growth. In the first month of life growth of the synapse was accompanied by a decrease in the size of pre- and postsynaptic elements in cross section. A decrease in the fraction of the width of end-plate plaque opposed by nerve terminal was also observed to age 2 months, and in older animal some end-plate plaques were completely unopposed by nerve terminal. This implies that end plates grow at a faster rate than nerve terminals and suggests that the availability of uninnervated, differentiated end plate permits or promotes nerve terminal growth.

journal_name

Exp Neurol

journal_title

Experimental neurology

authors

Habgood MD,Hopkins WG

doi

10.1016/0014-4886(87)90065-3

subject

Has Abstract

pub_date

1987-05-01 00:00:00

pages

474-8

issue

2

eissn

0014-4886

issn

1090-2430

pii

0014-4886(87)90065-3

journal_volume

96

pub_type

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