5-HT-1A receptor-mediated effects of antidepressants.
1. Antidepressant (AD) drugs in general induce subsensitivity of behavioural functions associated with activation of 5-HT-1a receptors in animals. 2. Electrophysiological studies in animals in general indicate increased serotonergic transmission after AD administration, mediated partly by increased functioning of post-synaptic 5-HT-1a receptors in the hippocampus. 3. Binding studies have in general shown no change in 5-HT-1a receptor number either pre-or post-synaptically, while results of second messenger studies (inhibition of adenylate cyclase) indicate subsensitivity after AD administration. 4. Human studies also indicate subsensitivity of 5-HT-1a receptors after ADs.
Newman
M E
ME
Department of Psychiatry, Hadassah University Hospital, Jerusalem, Israel.
Lerer
B
B
Shapira
B
B
D000818:Animals; D000928:Antidepressive Agents / Q000494:pharmacology*; D001522:Behavior, Animal / Q000187:drug effects; D006801:Humans; D011985:Receptors, Serotonin / Q000187:drug effects* / Q000378:metabolism
D000928:Antidepressive Agents; D011985:Receptors, Serotonin