Abstract
Clinical depression and other mood disorders are relatively common mental illnesses but therapy for a substantial number of patients is unsatisfactory. For many years clinicians and neuroscientists believed that the evidence pointed toward alterations in brain monoamine function as the underlying cause of depression. This point of view is still valid. Indeed, much of current drug therapy appears to be targeted at central monoamine function. Other results, though, indicate that GABAergic mechanisms also might play a role in depression. Such indications stem from both direct and indirect evidence. Direct evidence has been gathered in the clinic from brain scans or postmortem brain samples, and cerebrospinal fluid (CSF) and serum analysis in depressed patients. Indirect evidence comes from interaction of antidepressant drugs with GABAergic system as assessed by in vivo and in vitro studies in animals. Most of the data from direct and indirect studies are consistent with GABA involvement in depression.
Published Version
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