Diabetes has been reported to increase propensity to peptic ulceration through its effect both on offensive and defensive mucosal factors. Seeds of Eugenia jambolana (EJ) have been reported to have both antidiabetic as well as ulcer protective effects. The present study evaluates the antidiabetic effects of ethanolic extract of dried seed kernel of Eugenia jambolana (EJE) and its comparative ef...

OBJECTIVES Gastro-oesophageal reflux (GOR)-related aspiration is associated with respiratory disease, but the current "gold standard" investigation, the lipid-laden macrophage index (LLMI), is flawed. A specific marker of GOR-related aspiration should originate in the stomach, but not the lung. An assay to detect gastric pepsin in the bronchoalveolar lavage (BAL) of children was developed and v...

A procedure was devised for isolating human pepsins 1, 2, 3 and 5 from gastric juice by repetitive column chromatography on DEAE-cellulose. The combined yields in four different experiments varied from 14% to 90% of the total peptic activity of the starting material. The isolated individual pepsins were shown to behave as single homogeneous proteins on agar-gel electrophoresis at pH 5.0 and on ...

The effect of an intravenous infusion of omeprazole (0.35 mg/kg) and placebo on basal and stimulated (pentagastrin 1.0 microgram/kg/h) secretion of gastric acid, intrinsic factor and pepsin was studied in 10 healthy male subjects. Omeprazole caused a marked inhibition of basal and stimulated acid output. The inhibition of pepsin output was less marked, but also significant. The output of intrin...

Several substrate-like epoxides were found to act as specific and irreversible inactivators of pepsin. Of these, 1,2-epoxy-3-(p-nitrophenoxy) propane (EPNP) was the most potent. When EPNP reacted with pepsin, all enzyme activity was lost. Two molecules of EPNP were found to be covalently bound to each molecule of completely inactivated enzyme. In this reaction, two carboxyl groups of the enzyme...

Several substrate-like epoxides were found to act as specific and irreversible inactivators of pepsin. Of these, 1,2-epoxy-3-(p-nitrophenoxy) propane (EPNP) was the most potent. When EPNP reacted with pepsin, all enzyme activity was lost. Two molecules of EPNP were found to be covalently bound to each molecule of completely inactivated enzyme. In this reaction, two carboxyl groups of the enzyme...

The spontaneous output of pepsin was not found to be significantly reduced in this study of patients who had had a vagotomy.

Since William Beaumont's classic description of gastric physiology in 1847, the focus of clinical practice and basic research concerning gastric and duodenal ulcers has centered on the secretion of acid and pepsin. In addition to these well-known factors (largely determined by heredity, age, and oral intake), the search for other agents that alter the mucosal barrier has identified a bacillus, ...