Skip to content

Lysergic acid diethylamide: Evidence for stimulation of pituitary dopamine receptors

Herbert Y. Meltzer, Richard G. Fessler, Miljana Simonovic, John Doherty, Victor S. Fang

Psychopharmacology 1977 DOI: 10.1007/bf00426539 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Experimental study Peer reviewed
Population Male rats
Interventions LSD methysergide apomorphine chlorpromazine alpha-methylparatyrosine quipazine
Dose 0.05 mg/kg and 0.20 mg/kg
Topics LSD Serotonin
Keywords Prolactin Dopamine Methysergide Chlorpromazine Quipazine Alpha-methylparatyrosine Apomorphine
Key findings LSD has potent dopamine agonist properties that directly or indirectly inhibit prolactin secretion in male rats.

Abstract

Lysergic acid diethylamide (LSD), 0.05 mg/kg and 0.20 mg/kg, significantly decreased plasma prolactin (PRL) levels in male rats. LSD, 0.20 mg/kg, also inhibits the increase in plasma PRL levels produced by chlorpromazine (CPZ), 5 mg/kg, and alpha-methylparatyrosine (AMPT), 50 mg/kg, both of which interfere with dopaminergic inhibition of PRL secretion. LSD was more potent than methysergide, a serotonin receptor blocker, in lowering plasma PRL levels and more potent than apomorphine, a known direct acting dopamine agonist, in blocking the increase in plasma PRL produced by quipazine, a 5-HT agonist. These results suggest LSD has potent dopamine agonist properties on the rat pituitary or hypothalamic dopamine receptors which directly or indirectly inhibit PRL secretion.

Comparable studies

Other preclinical and animal studies on LSD, most cited first.

Study Year Design Participants
Transcriptome Fingerprints Distinguish Hallucinogenic and Nonhallucinogenic 5-Hydroxytryptamine 2A Receptor Agonist Effects in Mouse Somatosensory Cortex Human embryonic kidney 293 cells stably expressing 5-HT2ARs; wild-type and 5-HT2AR... 2003 Experimental study
Evidence for a central 5‐hydroxytryptamine receptor stimulation by lysergic acid diethylamide Rats 1968 Experimental study
Psychedelics, but Not Ketamine, Produce Persistent Antidepressant-like Effects in a Rodent Experimental System for the Study of Depression Rats 2020 Preclinical study
Lysergic acid diethylamide (LSD) promotes social behavior through mTORC1 in the excitatory neurotransmission Male mice 2021 Multidisciplinary experimental study with in vivo electrophysiology, optogenetics, behavioral paradigms, molecular biology, and conditional knockout mice
A non-hallucinogenic LSD analog with therapeutic potential for mood disorders. Mice and cultured rat cortical neurons 2023 Preclinical study

Citations in the library

Explore topics