Am J Psychiatry 1989; 146:1251-1260
Copyright © 1989 by American Psychiatric Association
Second messenger systems and psychoactive drug action: focus on the phosphoinositide system and lithium
JM Baraban, PF Worley and SH Snyder
Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Most models of psychotropic drug action have emphasized effects on the
release or uptake of neurotransmitters as well as interactions with
receptors. Stimulation of neurotransmitter receptors triggers a complex
array of electrical and biochemical actions. Recent experimental advances
have greatly clarified the second messenger systems underlying
neurotransmitter actions, suggesting novel sites of action for psychotropic
agents. The authors emphasize the phosphoinositide system and the
implications of its involvement for the therapeutic actions of lithium.