Rapid progress in gastroenterological research, during past century, was initiated by the discovery by W. Prout in early 18th century of the presence of inorganic, hydrochloric acid in the stomach and by I.P. Pavlov at the end of 19th century of neuro-reflex stimulation of secretion of this acid that was awarded by Nobel prize in 1904. Then, J. W. Black, who followed L. Popielski's concept of h...

Ulcer formation after pylorus ligation was assessed in control, testosterone treated and castrated male rats after cimetidine treatment. The stomach was studied for incidence of ulcers and its contents analysed for pH, volume, total acidity, free acidity, pepsin and mucin activity. Testosterone and cimetidine when used alone protected from ulceration while when used in combination the degree of...

Tiao He Yi Wei granule (DHYW), a traditional Chinese medicine, has been used for the treatment of gastric ulcer in clinical setting. The purpose of the present study was to investigate the possible effect of DHYW and explore the underlying mechanism against ethanol-induced gastric ulcer in mice. The model of ethanol-induced gastric ulcer in mice was induced by ethanol (0.2 mL/kg). Administratio...

The pressures in the lower oesophageal sphincter (high pressure zone or HPZ) and stomach were measured in 15 patients with duodenal ulcer and 14 patients with no gastrointestinal disease. All the patients were premedicated with morphine 10 mg i.m. In the patients without duodenal ulcer, the pressure gradient between HPZ and stomach was 6.6 +/- 0.62 mm Hg (mean +/- SEM) before diminishing to 4.9...

Upper gastrointestinal tract integrity is dependent upon the delicate balance between naturally occurring protective factors as mucus or prostaglandins and damaging factors as hydrochloric acid present normally in the digestive juices. An imbalance causes peptic ulcer formation and destruction of gastrointestinal tract mucosal lining. Ulcer may develop in the esophagus, stomach, duodenum or oth...

Melatonin (N-acetyl-5-methoxytryptamine), originally discovered in the pineal gland, is now known also to be present in the gastrointestinal tract from the stomach to the colon. It is localized and likely synthesized in the enterochromaffin cells of the mucosal lining. Its functions in the gut generally seem to be protective of the mucosa from erosion and ulcer formation and to possibly influen...

BACKGROUND & AIMS During aging, physiological changes in the stomach result in more tenuous gastric tissue that is less capable of repairing injury, leading to increased susceptibility to chronic ulceration. Spasmolytic polypeptide/trefoil factor 2-expressing metaplasia (SPEM) is known to emerge after parietal cell loss and during Helicobacter pylori infection, however, its role in gastric ulce...

into the left bronchus. The skiagram shows the fistula ; and the irregularity of the lumen of the cesophagus is suggestive of malignancy. Case 2.?Diverticulum of the stomach (see figure 2, plate V). A male, aged 30 years, admitted for investigation of dyspepsia. Barium meal examination on 3rd December, 1945, revealed a gastric diverticulum, in which barium persisted after the stomach had emptie...

1 Walker-Smith JA, Hamilton JR, Walker WA. Disorders of the stomach. Practical pediatric gastroenterology. London: Butterworth, 1983:174-84. 2 Decklebaum RJ, Roy CC, Lussier-Lazaroff J, Morin CL. Peptic ulcer disease: a clinical study in 73 children. Can Med Assoc J 1974;111:225-8. 3 Seagram CGF, Stephens CA, Cumming WA. Peptic ulceration at the Hospital for Sick Children, Toronto 1949-1%9. J P...

Gene therapy for gastric cancer and gastric ulcer is a rationalized strategy since various genes correlate with these diseases. Since gene expressions in non-target tissues/cells cause side effects, a selective gene delivery system targeted to the stomach and/or cancer must be developed. The route of vector transfer (direct injection, systemic, intraperitoneal, gastric serosal surface and oral ...