Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0038358 (gastric ulcer)
 5,179 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The effects of cimetidine, a new histamine H2-receptor antagonist, on the development of experimental gastric and duodenal ulcers were studied. It was found that either by the oral, intraduodenal, or intraperitoneal route this agent had a marked inhibitory activity on stress-, aspirin-, indomethacin-, or histamine-induced gastric ulcers in rats and guinea pigs. The effects of cimetidine on stress-, aspirin-, and indomethacin-induced gastric ulcers were dose-dependent in many cases. Pylorus-ligation uclers, reserpine- or serotonin-induced gastric ulcers were little influenced by cimetidine. Duodenal ulcers induced by continuous infusion of carbachol-histamine were significantly inhibited by a simultaneous infusion of cimetidine. An analysis of gastric contents in pylorus-ligated rats after stressing indicated a decreased volume and acid output as the result of intraduodenal cimetidine treatment. In contrast, cimetidine exerted little influence on gastric secretion in rats treated with aspirin or in guinea pigs treated with histamine. Thus, the mechanism of action of cimetidine in preventing gastric or duodenal ulcers is likely to occur by suppression of gastric secretory function in a duodenal ulcer model but by suppression of other unknown ulcerogenic factors in gastric ulcer models.
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PMID:Effects of cimetidine, a histamine H2-receptor antagonist, on various experimental gastric and duodenal ulcers. 1 7

Endoscopic findings in a group of 169 aged patients are shown to be concentrated in the stomach, whereas pathologic findings in the duodenal bulb are less frequent. In comparison to a group of young patients gastric mucosal atrophy, gastric ulcer, carcinoma of the operated and unoperated stomach, polyps are predominant in the aged patients. Approximately one half of carcinomas were seen in patients operated by the Billroth II technique. On behalf of this fact it is necessary to review patients endoscopically from the fifteenth year after operation on with regularity in order to detect growth of carcinoma in the early stage.
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PMID:[Gastroscopic findings in aged patients (author's transl)]. 1 29

An intraventricular administration of sulpiride suppressed the experimental cinchophen ulcer, thereby the effect of repeated administration of the material on cinchophen ulcerogenesis is evident, whereas intermittent administration lacked this effect. Such an effect as reducing experimental cinchophen ulceration, which is due to central neurohumoral mechanism, following intraventricular infusion of sulpiride appears to be ascribable to a chemical blockage of the hypothalamic structure. It can thus be concluded that sulpiride acts principally at the level of hypothalamus. Its inhibitory action on cinchophen gastric ulcer development is probably exerted via the hypothalomo-pituitary-adrenal axis, which is essential to the occurrence of an ulcer, and may be regarded as favoring the central neurohumoral theory of cinchophen ulcerogenesis.
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PMID:Inhibitory effect of sulpiride on cinchophen gastric ulceration in dogs. 1 33

The influence of a coffee-antazid-mixture was investigated at 30 patients with diseases of the stomach (17 with duodenal ulcer, 6 with gastric ulcer and 7 with chronic gastritis) in comparison to a commercial coffee. The parameters measured were the gastric basal acid output, the continuous registration of the pH by an intragastric electrode and the serum gastrin concentration before and after the application of the tests substances. 75% of the patients with duodenal ulcer showed a positive effect by means of a greater elevation of the intragastric pH after application of the mixture in comparison to coffee. The effect was strongly correlated to the basal acid ouptput. In the group with gastric ulcer and that with duodenal ulcer under the influence of the mixture the pH after the initial rise decreased to less deeper values. There was a close relationship to the patterns of gastric ulcer as well with chronic gastritis there was an additional facourable effect on the symptoms of abdominal pain which occured after coffee and not after the mixture. The group with chronic gastritis showed no difference between the pure coffee and the coffee-antacid-mixture. A possible relationship of the products of coffee roasting and the adsorptive properties of the antacid is discussed.
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PMID:[Effects of a coffee-antacid-mixture and a commercial coffee with regard to gastrin, pH and gastric secretion (author's transl)]. 1 88

Using a simple hemoglobin method on the basis of Anson-Mirsky's method, acid protease levels in serum were measured at pH 1.8 (pepsin) and pH 3.5 (gastricsin) in 18 healthy controls and 14 patients with duodenal ulcer, 19 patients with gastric ulcer and 18 patients with gastric cancer. Though acid protease activity in pH 1.8 in duodenal ulcer has a tendency to show a little higher level than healthy controls, there is no significant difference in acid protease levels between controls and each of three diseases.
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PMID:Estimation of serum acid proteases at pH 1.8 and pH 3.5 in patients with duodenal ulcer, gastric ulcer and gastric carcinoma. 2 29

Cimetidine, like its predecessors burinamide and metiamide, has been shown in vitro to be a specific competitive histamine H2-receptor antagonist. In vivo, it is a potent inhibitor of histamine-stimulated gastric acid secretion in animals and man after both intravenous and oral administration. Doses sufficient to inhibit gastric secretions are without measureable effects on other physiologic systems. The main indication for cimetidine is in the treatment of duodenal ulcer and of the Zollinger-Ellison syndrome. Useful indications are treatment of gastric ulcer and pnacreatic insufficiency. Possible indications are prevention of gastrointestinal bleeding and treatment of peptic esophagitis. The neutrophil toxicity seen with metiamide has so far not been demonstrated with cimetidine; side effects with cimetidine have generally been trivial. In the future, H2-receptor antagonists are likely to become key therapeutic agents in diseases in which gastric acid-pepsin secretion plays a pathogenetic role.
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PMID:H2-receptor antagonists in perspective. 2 55

Development of histamine H2-receptor antagonists has enhanced the understanding of histamine physiology and pharmacology. The effect of H2-receptor antagonists on gastrointestinal physiology has been studied extensively. These compounds inhibit gastric acid secretion in response to all known secretagogues and, in contrast to anticholinergic drugs, markedly inhibit food-stimulated acid secretion in duodenal ulcer patients. The relative roles of H2-receptor antagonists, anticholinergic drugs and antacids in the treatment of duodenal ulcer remain to be defined. Cimetidine currently is under investigation for the treatment of duodenal ulcer, gastric ulcer, reflux esophagitis, gastrointestinal bleeding and hypersecretory states. Although the long-term safety of cimetidine has not been established, in short-term clinical trials there have been no significant subjective or objective side-effects. Assuming that toxic effects do not develop, H2-receptor antagonists should improve the treatment of acid-peptic disease.
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PMID:Histamine H2-receptor antagonists. 2 27

In an attempt to elucidate the etiology of acute gastric bleeding and/or erosion and chronic peptic ulcer, a measurement of gastric juice and mucosal pepsin was carried out in surgically-treated patients. Patients with massive gastric mucosal bleeding in the fundic gland area showed high levels of fundic mucosal pepsin without acid-pepsin appearance in the gastric contents. In these patients, a significantly high value of the peptic activity ratio of gastric mucosa to gastric juice (MJPR, 36.4 +/- 6.7) was observed. It can be suggested that transient blockage of pepsin output from peptic cells with occur in the course of the acute mucosal bleeding, while acid-peptic digestion could be carried out within the fundic gland mucosa. On the other hand, a close correlation between relatively high acid-and-pepsin concentration of the gastric contents and a low level of MJPR (5.6 +/- 1.2) was observed in patients with chronic gastric ulcer. Patients who had a gastric ulcer within the pyloric gland mucosa had a highest acid-peptic activity among three groups with ulcers in fundic gland area, border zone and pyloric gland area. There is a rule that acid-peptic activity becomes low when the site of gastric ulcer moves from pylorus to fundus. A marked increase in acid-and-pepsin secretion into the gastric cavity was observed in patients suffering from chronic duodenal ulcer showing the lowest level of MJPR (3.40 +/- 0.50).
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PMID:Relationship between site of peptic ulceration and gastric acid-peptic activity: new evaluation of gastric analysis in patients with acute gastric bleeding and chronic peptic ulcer. 2 12

Gastric aspirates were obtained from 12 healthy volunteers, 49 patients with duodenal ulcer, 14 with gastric ulcer and 35 with gastric carcinoma. The mean total viable bacterial counts in these groups were as follows: volunteers 0, duodenal ulcer 3.8 X 10(1), gastric ulcer 6.95 X 10(4), carcinoma 1.9 X 10(7) organisms/ml. The incidence of wound sepsis in patients without antibiotic cover was; duodenal ulcer 17 per cent, gastric ulcer 38 per cent, carcinoma 56 per cent. Regardless of the underlying pathology, patients with counts greater than 5 X 10(6) organisms/ml in the gastric aspirate had a 93 per cent incidence of wound sepsis, compared with 16 per cent in patients with counts of less than 5 X 10(6) organisms/ml (P less than 0.001). In the group with high counts all except one of the wound infections were caused by organisms present in the stomach at the time of operation. There was a good correlation in the bacteriology of apirates obtained during preoperative endoscopy compared with operative nasogastric samples (n = 31) both for viable counts (r = 0.93) and for the counts of individual organisms. Therefore, preoperative endoscopy can be used to identify patients who are at risk of developing wound sepsis after gastric surgery.
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PMID:Prediction of wound sepsis following gastric operations. 2 66

Gastric acid secretion stimulated by a normally eaten beefsteak meal was measured for 4 h in 16 patients with duodenal ulcer disease (DU), in 9 patients with gastric ulcer disease (GU), and in 14 controls by intragastric titration with bicarbonate to a constant pH 5.5. Reproducibility of the method investigated in 6 DU and in 5 controls gave similar acid secretory values (var. coeff. = 7.5%). DU produced acid on a higher level and with longer duration after food than controls and GU (p less than 0.001). Apart from the second half of the first hour after food, when the acid secretion was higher in controls than in GU (p less than 0.025), there was no significant difference in acid output after food between GU and controls. Maximum gastrin values and 'total gastrin output' after food were significantly higher in GU than in controls, but these differences were not significant between GU and DU and between DU and controls. Fasting gastrin and gastrin levels after food were not correlated to basal acid output or acid output after pentagastrin or food in any of the groups. The maximal acid output after food was higher than the peak acid output after pentagastrin in controls, DU and GU. The relation between food- and pentagastrin-stimulated acid output was not statistically significantly different between the three groups. Instead, acid secretion after food was well correlated to acid secretion after pentagastrin in controls, DU and GU (r = 0.85).
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PMID:Food-stimulated acid secretion measured by intragastric titration with bicarbonate in patients with duodenal and gastric ulcer disease and in controls. 3 74


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