Stroke, Vol 19, 498-502, Copyright © 1988 by American Heart Association
WQ Dong, A Schurr, KH Reid, CB Shields and CA West
In vivo models of cerebral ischemia do not fully control for the
interacting effects of many variables (e.g., anesthesia, temperature,
cerebrovascular changes) and often do not clearly define the region
affected. Numerous in vivo studies have indicated that hyperglycemia
augments ischemic brain damage; this effect is often attributed to lactic
acidosis. To separate the effects on neuronal tissue of ischemia from those
due to actions on the cerebrovascular system, we used an in vitro
blood-free system as an ischemic model. In our study we evaluated the
effects of various combinations of oxygen and glucose levels on evoked
synaptic activity in the CA1 region of the rat hippocampal slice
preparation. A 50% inhibitory dose for both oxygen and glucose on neuronal
synaptic function was determined. It is our intention to use this model for
preliminary screening of antihypoxic/anti-ischemic drugs.
ARTICLES
The rat hippocampal slice preparation as an in vitro model of ischemia
Department of Anesthesiology, University of Louisville, School of Medicine, KY 40292.
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