- Bradykinin (Bk) increases cytosolic calcium in cultured rat myenteric neurons via Bk-2 type receptors coupled to mobilization of extracellular and intracellular sources of calcium: evidence that calcium influx is prostaglandin dependent. Gelperin, D., Mann, D., del Valle, J., Wiley, J.W. J. Pharmacol. Exp. Ther. (1994)