Inhibition of isolation-induced aggressive behavior with GABA transaminase inhibitors.

Administration of aminooxyacetic acid (AOAA) and gamma-acetylenic GABA (GAG) resulted in a dose-dependent suppression of aggressive behavior and a concomitant increase in brain GABA. The increase in GABA levels persisted beyond the time when AOAA and GAG exerted an anti-aggressive effect. Brain GABA levels remained significantly elevated over controls for 120 h after a single injection of AOAA and 46 h after a single dose of GAG.