PMID: 9175449May 1, 1997Paper

The cardiovascular startle response: anxiety and the benzodiazepine receptor complex

Psychophysiology
G G BerntsonM Sarter

Abstract

Benzodiazepine receptor (BZR) agonists are prototypic anxiolytic agents, whereas BZR inverse agonists exert anxiogenic effects. The effects of these compounds offer a potentially important pharmacological model system to examine the central mechanisms of anxiety. In accord with its putative anxiogenic properties, we previously found that the BZR partial inverse agonist, FG 7142, enhances the cardiovascular defensive response to a nonsignal acoustic stimulus in rats. In contrast, we found in the present study that this agent attenuates both the somatic and cardiovascular components of the acoustic startle response. BZR agonists and inverse agonists are known to modulate the basal forebrain cortical cholinergic system, and we consider the potential involvement of this system in the disparate psychophysiological actions of FG 7142 and in anxiety states in general.

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Citations

Mar 1, 2012·International Journal of Obstetric Anesthesia·M Le GuenM Fischler
Aug 29, 1998·Behavioural Brain Research·G G BerntsonJ T Cacioppo
May 8, 1999·British Journal of Clinical Pharmacology·H SchächingerR Ritz

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