Canna~Fangled Abstracts The Combined Inhibitory Effect of the Adenosine A1 and Cannabinoid CB1 Receptors on cAMP Accumulation in the Hippocampus Is Additive and Independent of A1 Receptor Desensitization. 2015;2015:872684. doi: 10.1155/2015/872684. Epub 2015 Jan 18. Serpa A1, Correia S1, Ribeiro JA2, Sebastião AM2, Cascalheira JF3. Author information…Freedom WaresJanuary 18, 2015