E. Rubinstein et L. Hojgaard, THE EFFECT OF INTRAVENOUS OMEPRAZOLE ON THE GASTRIC AND DUODENAL POTENTIAL DIFFERENCE AND PH IN HEALTHY-SUBJECTS, Digestion, 54(1), 1993, pp. 15-18
The effect of intravenous omeprazole (40 and 80 mg) on the gastric and
duodenal potential difference (PD) and pH was investigated in 9 healt
hy volunteers. Gastric PD and pH increased significantly (p < 0.05) fo
llowing omeprazole, and the increases were equal following the two dos
es. No changes were found in duodenal PD or pH. It has been claimed th
at gastric PD changes following acid secretion inhibition with cimetid
ine and glucagon might be due to changes in the parietal cell surface
area. Omeprazole causes no changes in the parietal cell structure, and
the changes in gastric PD following omeprazole might therefore be asc
ribed to changes in mucosal electrophysiologic transport or resistance
.