clozapine and timoprazole

Certain CNS-active compounds decrease gastric acid secretion in vivo. In this study a number of tricyclic antipsychotic or antidepressant compounds together with haloperidol, a nontricyclic antipsychotic agent, were shown to inhibit dibutyryl-cAMP-stimulated [14C]aminopyrine uptake, an index of acid secretory activity in a rat isolated gastric mucosal cell preparation. The observed order of potency was: thioridazine greater than chlorpromazine greater than haloperidol approximately equal to desipramine approximately equal to imipramine greater than clozapine. Comparison of these potencies with those of the known (H+ + K+)ATPase inhibitors timoprazole and omeprazole revealed that the potency of timoprazole was similar to the one of clozapine while omeprazole was intermediate between thioridazine and chlorpromazine. Pirenzepine was ineffective.

Topics: 2-Pyridinylmethylsulfinylbenzimidazoles; Aminopyrine; Animals; Benzimidazoles; Bucladesine; Clozapine; Gastric Acid; Gastric Mucosa; Male; Omeprazole; Parietal Cells, Gastric; Pirenzepine; Proton-Translocating ATPases; Psychotropic Drugs; Rats; Rats, Inbred Strains