It seems that prostacyclin has an increasing effect on gastric mucosal (ant
ral and fundic) calmodulin level in rats. Using either the calcium channel
blocker verapamil or anti-calmodulin drugs (diazepam, trifluoperazine,) the
cytoprotective effect of prostacyclin can be inhibited. Therefore, it is p
robable that calcium ions and calcium activated calmodulin play a role in t
he effect of prostacyclin. (C) 1999 Elsevier Science Ltd. Published by Edit
ions scientifiques et medicales Elsevier SAS.