Glycine and experimental spinal spasticity.

Abstract:

:Spasticity may result in part from segmental spinal disinhibition. We determined the content and specific activity of glycine (the putative neurotransmitter thought to mediate spinal postsynaptic inhibition) and serine (the probable precursor of glycine) in feline spastic spinal cord following the intra-aortic administration of two labelled precursors of glycine--14C-D-glucose and 14C-L-serine. The specific activities of both glycine and serine were significantly reduced in the ventromedial, central, and dorsal spinal gray matter in spastic animals. Glycine content remained at control values but serine content increased in spastic spinal cord. This study suggests that glycine turnover decreases in spasticity, owing to its diminished release, and supports neurophysiologic evidence of a decrement in postsynaptic inhibition.

journal_name

Neurology

journal_title

Neurology

authors

Hall PV,Smith JE,Lane J,Mote T,Campbell R

doi

10.1212/wnl.29.2.262

subject

Has Abstract

pub_date

1979-02-01 00:00:00

pages

262-7

issue

2

eissn

0028-3878

issn

1526-632X

journal_volume

29

pub_type

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