the calcium channel antagonists verapamil , gallopamil and nifedipine were tested for their effects on acid secretion stimulated by histamine and dibutyryl-cyclic amp in isolated and enriched guinea pig parietal cells , on adenylate cyclase activity mediated by histamine h2 receptors , on histamine-stimulated increase in cytosolic-free ca2+ concentration [ ca2+ ] , on gastric h+/k ( + ) -atpase activity and on h+/k ( + ) -atpase-mediated proton uptake in intact gastric membrane vesicles .
C0042523
verapamil
C0016986
gallopamil