Cholecystokinin-2 receptors couple to cAMP–protein kinase A to depress excitatory synaptic currents in rat nucleus accumbens in vitro. - Kombian, Samuel B.; Ananthalakshmi, Kethireddy V. V.; Parvathy, Subramanian S.; Matowe, Wandikayi C. (Canadian Journal of Physiology & Pharmacology, 2006)