Classics in Chemical Neuroscience: Muscimol.
ACS chemical neuroscience – September 18, 2024
Source: PubMed
Summary
Muscimol, a psychoactive compound found in Amanita mushrooms, shows promise in treating neuropathic pain. Structurally similar to GABA, it binds strongly to GABAA receptors. Its historical use as an entheogen in Siberian shamanic practices highlights its cultural significance. Although not clinically approved, muscimol is valuable in neuroscience research, particularly with 3H-muscimol radioligands aiding GABA receptor studies. Ongoing investigations into its biosynthesis and therapeutic applications could unveil further benefits, making muscimol a fascinating subject for both historical and modern scientific exploration.
Abstract
Muscimol (3) is a psychoactive isoxazole present in various Amanita mushrooms, along with ibotenic acid and muscarine. It is structurally related to GABA and acts as a GABAA agonist with great affinity. Muscimol use dates back to Siberian shamanic cultures as an entheogen, where it was ingested orally to exert psychoactive effects. Although not approved for clinical use, its potential and use as a research tool in neuroscience is of immense value, with 3H-muscimol being used as a radioligand in GABA receptor research. Since its discovery in the early 60s, many research groups have worked on the synthesis of the compound. Recent research suggests the potential use of muscimol in neuropathic pain relief and other potential uses are also being studied. In this review, we will cover the history, chemistry, pharmacology and overall importance of the compound.