A(1) and A(2A) adenosine receptors are co-localized with dopamine D(1) and D(2) receptors, respectively, and their stimulation attenuates dopaminergic functioning.
Preclinical Pharmacology Section, Behavioral Neuroscience Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA. pmunzar@alexza.com