Stroke, Vol 9, 155-159, Copyright © 1978 by American Heart Association
T Yanagihara
Cerebral ischemia was produced in gerbils by ligation of the right common
carotid artery and the resulting clinical manifestations and pathological
alterations, along with electroencephalographic findings, were followed
from 30 minutes to 24 hours. Protein synthesis was evaluated with brain
slices in vitro and subsequent cellular and subcellular fractionations. One
group of animals developed clinical signs of cerebral ischemia and stroke
very rapidly and often died within 12 hours. In these animals cerebral
infarction was diffuse in the right side of brain within a few hours
post-operatively and there was persistent suppression in the
electroencephalographic recordings. Amino acid incorporation into protein
of subcellular fractions was decreased to 50% of the opposite side at 30
minutes and further declined to less than 10% in 8 to 10 hours. Another
group of animals survived to 24 hours in spite of severe neurological
manifestations, and protein synthesis was about 15% of the control side at
24 hours. The suppression of protein synthesis was observed both in the
neuronal and neurologlial fractions indicating similar vulnerability of
these cellular elements toward cerebral ischemia as shown with cerebral
anoxia in the past. It was emphasized that the correlation of clinical
manifestations and biochemical data is very important to extract meaningful
information from biochemical investigations in this model.
ARTICLES
Experimental stroke in gerbils: correlation of clinical, pathological and electroencephalographic findings and protein synthesis
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