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The neurotensin receptor antagonist SR 48692 decreases extracellular striatal GABA in rats
1Department of Psychology, Washington State University, Pullman 99164-4820, USA. chapmanp@wpogate.slu.edu
Brain Research
|August 5, 1996
Abstract:
Intracranial microdialysis was utilized to assess the effects of the novel neurotensin antagonist SR 48692 on extracellular gamma-amino-butyric acid (GABA) and glycine in the striatum. Subcutaneous injection of SR 48692 (0.2 mg/kg) significantly decreased extracellular striatal GABA levels, with peak decreases occurring 2-3 h post-injection. Injection of SR 48692 had no significant effect on glycine levels. These data suggest that endogenous neurotensin may modulate striatal GABA levels.