Complex pharmacology of natural cannabivoids: Evidence for partial agonist activity of Δ9-tetrahydrocannabinol and antagonist activity of cannabidiol on rat brain cannabinoid receptors

Autor: Assunta Imperato, Bernadette Jeantaud, Marie-Christine Dubroeucq, François Petitet, Michel Reibaud
Rok vydání: 1998
Předmět:
Zdroj: Life Sciences. 63:PL1-PL6
ISSN: 0024-3205
Popis: Delta9-tetrahydrocannabinol (delta9-THC), cannabinol and cannabidiol are three important natural cannabinoids from the Marijuana plant (Cannabis sativa). Using [35S]GTP-gamma-S binding on rat cerebellar homogenate as an index of cannabinoid receptor activation we show that: delta9-THC does not induce the maximal effect obtained by classical cannabinoid receptor agonists such as CP55940. Moreover at high concentration delta9-THC exhibits antagonist properties. Cannabinol is a weak agonist on rat cerebellar cannabinoid receptors and cannabidiol behaves as an antagonist acting in the micromolar range.
Databáze: OpenAIRE