Effect of inhibitory avoidance training on [3H]-glutamate binding in the hippocampus and parietal cortex of rats
Braz. j. med. biol. res
;
33(2): 229-32, Feb. 2000.
Article
in English
| LILACS
| ID: lil-252299
ABSTRACT
Glutamate receptors have been implicated in memory formation. The aim of the present study was to determine the effect of inhibitory avoidance training on specific [3H]-glutamate binding to membranes obtained from the hippocampus or parietal cortex of rats. Adult male Wistar rats were trained (0.5-mA footshock) in a step-down inhibitory avoidance task and were sacrificed 0, 5, 15 or 60 min after training. Hippocampus and parietal cortex were dissected and membranes were prepared and incubated with 350 nM [3H]-glutamate (N = 4-6 per group). Inhibitory avoidance training induced a 29 percent increase in glutamate binding in hippocampal membranes obtained from rats sacrificed at 5 min (P<0.01), but not at 0, 15, or 60 min after training, and did not affect glutamate binding in membranes obtained from the parietal cortex. These results are consistent with previous evidence for the involvement of glutamatergic synaptic modification in the hippocampus in the early steps of memory formation
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Parietal Lobe
/
Avoidance Learning
/
Receptors, Glutamate
/
Hippocampus
/
Memory
Limits:
Animals
Language:
English
Journal:
Braz. j. med. biol. res
Journal subject:
Biology
/
Medicine
Year:
2000
Type:
Article
Affiliation country:
Argentina
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