Ulcerative gastric lesions in rats were produced by the procedure of Shay et al. The lesion develops uniformly in the rumen, less often in the antrum, and least frequently in the body of the stomach. Administration of serotonin (8 mg/kg) was effective in preventing the occurrence of gastric lesions and the effect is distinct particularly in the group which had 48 hrs of starvation and 10 hrs of pyloric ligation. Bilateral vagotomy was completely effective and pretreatment of atropine or morphine was moderately effective in preventing the gastric lesions. The acidity of gastric juice was considerably lower, however, the mucin content was higher in the animals treated with serotonin than nontreated control animals. Histobgically, mucus secretion was greater in the animals that were given serotonin. In summary, it is concluded that serotonin is effective in preventing ulceration in the stomach by its action of increasing mucin secretion and inhibitory gastric acid secretion.
Animals ; Female ; Gastric Juice/drug effects ; Male ; Rats ; Serotonin/*pharmacology ; Stomach Ulcer/*prevention & control

: To investigate the protective effect of (FD) against ethanol-induced gastric ulcer and its mechanism. : Human gastric epithelial GES-1 cells were divided into normal control group, model control group, FD 95% alcohol extract group, FD 50% alcohol extract group and FD decoction extract group. Gastric ulcer was induced by treatment with 1% ethanol in GES-1 cells. The cell proliferation was detected with MTT method in each group. Sixty SD rats were randomly divided into normal control group, model control group, ranitidine group and low-dose, medium-dose, high-dose FD 95% alcohol extract groups (150, 300, 600 mg/kg). The corresponding drugs were administrated by gavage for The gastric ulcer model was induced by intragastric administration of anhydrous ethanol. The gastric ulcer area and ulcer inhibition rate of rats were measured in each group; the degree of gastricmucosal damage was observed by scanning electron microscopy; the levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IL-1β in serum and the content of malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), catalase (CAT) in gastric tissues were detected by ELISA method. : 95% alcohol extract of FD had the strongest protective effect on proliferation of GES-1 cells. In animal experiments, compared with the normal control group, a large area of ulcers appeared on the gastric mucosa in the model control group, while the ulcer areas of the FD groups and ranitidine group were significantly smaller than that of the model control group (all <0.05). Compared with the model control group, FD groups and ranitidine group significantly reduced the levels of TNF-α, IL-1β, IL-6 in serum and the MDA content in the gastric tissues, and increased the activity of SOD, CAT and GSH in gastric tissues (all <0.05). : The 95% alcohol extract of FD can reduce the levels of TNF-α, IL-1β and IL-6 in serum and the content of MDA in gastric tissues, and increase the activity of SOD, CAT and GSH in gastric tissues to achieve the protective effect against gastric ulcer.
Animals ; Ethanol/toxicity* ; Gastric Mucosa ; Malondialdehyde ; Rats ; Rats, Sprague-Dawley ; Stomach Ulcer/prevention & control* ; Superoxide Dismutase

*Acupuncture Therapy ; Coronary Disease/*therapy ; Emergencies ; Immunity, Cellular ; Moxibustion ; Nervous System Physiology ; Pain, Postoperative/prevention & control ; Stomach Ulcer/prevention & control

BACKGROUND: A esophagogastroduodenoscopy is now considered to be one of the essential rnethods for diagnosis of upper gastrointestinal disease. Furthermore early detection of stomach cancer by such a mass screening techique is very important to increase the survival rate. METHODS: A clinical analysis was conducted on 9,137 healthy subjects who had undergone a gastrofiberscopic examination for the secondary prevention, from January 1995 to December 1996, in Kangbuk Samsung hospital. RESULTS: 1) Number of cases with normal finding was 764 (8.4%). 2) The most prevalent disease found was chronic gastritis (82%). The number of cases with superficial gastritis was 64.7%, erosive gastritis 9.0%, atrophic gastritis 6.4% and metaplastic gastritis 1.6%. Atrophic and metaplastic gastritis were more frequent in the older age group. 3) The prevalence of peptic ulcer was 13.9% and duodenal ulcers (8.1%) was more common than gastric ulcers (5.8%, p<0.05) with a male to female ratio of 3.7: 1, and 2.1: 1 respectively. 4) Of the 10 cases with stomach cancer (0.11%), 5 cases (0.055%) were found to be advanced stomach cancer and the other 5 cases (0.055%) were early gastric cancer. The macroscopic type of early gastric cancer was type IIc in 4 cases and type IIb in another case, and 4 cases were limited in mucosa but another was in submucosa. The size of 4 cases were below 1 cm and there was no lymph node metastasis. CONCLUSION: Medically screened subjects were found to have many abnormalities, and therefore, it is recommanded that regular check ups using an endoscopy would be needed for early detection of early gastric cancer regardless of clinical symptoms.
Diagnosis ; Duodenal Ulcer ; Endoscopy ; Endoscopy, Digestive System ; Female ; Gastritis ; Gastritis, Atrophic ; Gastrointestinal Diseases ; Humans ; Lymph Nodes ; Male ; Mass Screening ; Mucous Membrane ; Neoplasm Metastasis ; Peptic Ulcer ; Prevalence ; Secondary Prevention* ; Stomach Neoplasms ; Stomach Ulcer ; Survival Rate

OBJECTIVETo study the effects of total alkaloids (TA) extracted from Rhizoma Coptis Chinensis on experimental gastric ulcer models.

METHODSFour kinds of experimental ulcer models were established respectively by water-immersion stress, intragastric ethanol, acetic acid erosion, and pylorus ligation. The anti-ulcer effects of TA were evaluated, and compared with that of berberine (Ber) and cimetidine (Cim).

RESULTSTA showed significant inhibitory effects on ulcerative formation induced by water-immersion stress, intragastric ethanol, and pylorus ligation in dose-dependent manner, and showed therapeutic effect on acetic acid erosion-inducing ulcer, in comparison with the control group. The anti-ulcer activity of Ber was less than TA containing equal content of Ber. TA significantly reduced the free acidity, total acidity and total acid output, but didn't affect the gastric juice volume, gastric pepsin activity, adherent mucus quantity of stomach wall and free mucus dissolving in gastric juice. The suppressive activities of TA on gastric acid secretion didn't occur when it was administered into dodecadactylon at a dose of 360 mg/kg wt. Moreover, when compared with Cim, the inhibitory effect of TA on gastric acid secretion isn't proportional to the inhibitory effects on the formation of the 4 kinds of experimental ulcers.

CONCLUSIONTA is a potent candidate in therapeutic drugs for treating gastric ulcer. Its anti-ulcer effective components and mechanism is not only related to Ber and inhibition of gastric acid, but also to other ingredients of TA and mechanism so far unknown.

Alkaloids ; therapeutic use ; Animals ; Anti-Ulcer Agents ; therapeutic use ; Berberine ; therapeutic use ; Cimetidine ; therapeutic use ; Coptis ; Disease Models, Animal ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Male ; Mice ; Phytotherapy ; Plant Extracts ; therapeutic use ; Rats ; Stomach Ulcer ; drug therapy ; prevention & control

AIM: The present study was aimed at evaluating the antiulcer activity of the polyherbal formulation (PHF) containing the leaf extracts of Moringa oleifera, Raphinus sativus, and Amaranthus tricolor in rats. METHODS: The antiulcer activity of the polyherbal formulation (PHF) was evaluated using different models of gastric ulcers: ethanol-induced, indomethacin-induced and ischemia reperfusion-induced gastric ulcers. Efficacy was assessed by determining the ulcer index. RESULTS: Administration of the polyherbal formulation (150 mg·kg(-1), p.o.) offered significant protection against indomethacin-induced, ethanol-induced, and ischemic reperfusion-induced ulcer models when compared to the control group. CONCLUSION PHF, containing leaf extracts of Moringa oleifera, Raphinus sativus, and Amaranthus tricolor, was found to possess antiulcer properties in three experimental animal models of gastric ulcers, and these findings suggest that the significant gastroprotective activity could be mediated by its antioxidant activity.
Amaranthus ; chemistry ; Animals ; Anti-Ulcer Agents ; administration & dosage ; Brassicaceae ; chemistry ; Chemistry, Pharmaceutical ; Humans ; India ; Male ; Moringa oleifera ; chemistry ; Phytotherapy ; Plant Extracts ; administration & dosage ; Plant Leaves ; chemistry ; Plants, Medicinal ; chemistry ; Rats, Wistar ; Stomach Ulcer ; drug therapy ; prevention & control

Endoscopic submucosal dissection (ESD) has been reported to have a higher bleeding rate than conventional methods. However, there are few reports on whether a proton pump inhibitor or a histamine2-receptor antagonist is the more effective treatment for preventing bleeding after ESD. In a prospective trial, patients undergoing ESD due to gastric adenoma or adenocarcinoma were randomly assigned to pantoprazole or famotidine. Both drugs were given intravenously for the first 2 days, thereafter by mouth. Eighty-five in the pantoprazole group and 79 in the famotidine group were included for analysis. Primary outcome measure was the delayed bleeding rate. Clinical characteristics were not different between the two groups. The delayed bleeding rate was significantly lower in the pantoprazole group compared with the famotidine group (3.5% vs. 12.7%, p=0.031). On multivariate analysis, the preventive use of pantoprazole (relative hazard: 0.220, 95% CI: 0.051- 0.827, p=0.026) and the specimen size (> or =34 mm, relative hazard: 4.178, 95% CI: 1.229-14.197, p=0.022) were two independent factors predictive of delayed bleeding. There were no significant differences in en bloc and complete resection rate between the two groups. In conclusion, pantoprazole is more effective than famotidine for the prevention of delayed bleeding after ESD.
2-Pyridinylmethylsulfinylbenzimidazoles/*therapeutic use ; Aged ; Anti-Ulcer Agents/*therapeutic use ; Dissection ; Famotidine/*therapeutic use ; Female ; Gastric Mucosa/*surgery ; Gastrointestinal Hemorrhage/*prevention & control ; *Gastroscopy ; Humans ; Male ; Middle Aged ; Postoperative Hemorrhage/*prevention & control ; Prospective Studies ; Single-Blind Method ; Stomach Neoplasms/*surgery

In addition to inhibiting cyclooxygenase and prostaglandin, nonsteroidal anti-inflammatory drugs (NSAIDs) may cause gastroduodenal injuries due to reactive oxygen species produced by recruited inflammatory cells. DA-9601 is a novel antioxidant with anti-inflammatory and cyto-protective effects. This study was conducted to compare the efficacy and safety of DA-9601 with misoprostol for preventing NSAID-associated gastroduodenal injury. In this randomized, double-blind, multicenter, noninferiority trial we compared the extents of protection of gastric and duodenal mucosae by endoscopy after 4 weeks of treatment with DA-9601 60 mg or misoprostol 200 microg three times daily, in subjects with normal baseline endoscopic findings who received an NSAID twice daily for 4 weeks. A total of 266 subjects were randomized to treatment. At week 4, the gastric protection rates with DA-9601 and misoprostol were 85.1% and 95.2%, respectively; the difference between the groups was -10.1% (var = 0.001), which was shown to indicate noninferiority of DA-9601 compared to misoprostol. Adverse events were lower in the DA-9601 group, 56.4% (95% CI, 48.0%-64.8%) than in the misoprostol group, 69.2% (95% CI, 61.3%-77.0%) (P = 0.031). DA-9601 is not inferior to misoprostol for preventing NSAID-associated gastroduodenal injury, and superior to it with respect to treatment-related side effects.
Adolescent ; Adult ; Anti-Inflammatory Agents, Non-Steroidal/*adverse effects ; Double-Blind Method ; Duodenal Ulcer/chemically induced/*prevention & control ; Endoscopy, Gastrointestinal ; Female ; Gastric Mucosa/drug effects ; Humans ; Male ; Middle Aged ; Misoprostol/*adverse effects ; Plant Extracts/*adverse effects ; Stomach Ulcer/chemically induced/*prevention & control

OBJECTIVE: To observe the effect of ranitidine on gastric acid, plasma endothelin, and calcitonin gene-related peptide (CGRP) in patients undergoing the brain operation, and to explore the possible pathogenesis of ranitidine on preventing from gastric mucosal injury under the stress. METHODS: Thirty patients who underwent brain surgery were randomly divided into 2 groups: Fifteen patients in the control group did not use ranitidine and the other 15 in the treatment group received ranitidine 150 mg intravenously twice daily besides the routine therapy. We continuously monitored the gastric pH value from 4 hours pre-operatively to 72 hours post-operatively in the 30 patients. We also determined the plasma endothelin and CGRP levels of the patients at the 4th hour pre-operatively and at the 4th, 24th, and 72nd hours post-operatively. RESULTS: In the control group there was no significant difference between the mean intra-gastric pH values pre-operatively and post-operatively (P> 0.05). In the treatment group the level of intra-gastric pH was much higher than that in the control group (P< 0.05). In the control group, the level of plasma endothelin significantly higher and the level of calcitonin gene-related peptide significantly lower than that pre-operatively (P< 0.01), but the level of plasma endothelin significantly was lower and the level of calcitonin gene-related peptide obviously higher in the post-operative treatment group than that pre-operatively (P< 0.01). CONCLUSION The brain operation obviously influences the endogenous plasma endothelin and CGRP levels, but its influence on the intra-gastric acid is not visible. Ranitidine can obviously decrease the level of intra-gastric acid, and improve the macrocirculation of gastric mucous membrane by decreasing ET and increasing the CGRP level.
Adult ; Anti-Ulcer Agents ; administration & dosage ; therapeutic use ; Brain ; surgery ; Calcitonin Gene-Related Peptide ; blood ; Endothelin-1 ; blood ; Female ; Gastric Acid ; metabolism ; Humans ; Infusions, Intravenous ; Male ; Middle Aged ; Postoperative Complications ; prevention & control ; Ranitidine ; administration & dosage ; therapeutic use ; Stomach Ulcer ; prevention & control

This prospective, randomized, double-blinded study was performed to evaluate the effects of intravenous metoclopramide and ranitidine on preoperative gastric contents in outpatients receiving intravenous anesthesia for laparoscopic gynecologic surgery. Fifteen minutes before the induction of anesthesia, the Z-M group (n=20) received 50mg ranitidine and 10mg metoclopramide intravenously and the control group (n=20) received the same volume of normal saline. Before the surgery, a 14-F multiorifice nasogastric tube was inserted to aspirate the gastric contents of patients under sedation with propofol and midazolam. The mean pH values of the gastric fluid were 2.7+/-2.0 (SD) [median 1.6 (range: 1.2-7.2)] in the control group, and 6.1+/-1.9 [median 6.8 (range 1.4-7.8)] in the Z-M group. The mean aspirated volumes (mL) were 15.3+/-10.4 (SD) [median 11.0 (range: 5.0-44.0)] in the control group, and 6.9+/-10.0 (SD) [median 4.5 (range: 0-38.0)] in the Z-M group. There were significantly more high-risk (gastric fluid volumes > 25mL and pH < 2.5) patients in the control group (4/20, 20%) than in the Z-M group (1/20, 5%). In conclusion, intravenous prophylactic ranitidine and metoclopramide may be an easy and useful method to decrease the volume while increasing the pH of gastric contents, and therefore may reduce the number of patients at risk for aspiration pneumonitis in ambulatory laparoscopic procedures who receive an anesthesia.
Stomach/*drug effects ; Risk Factors ; Ranitidine/*administration & dosage ; Preoperative Care ; Pneumonia, Aspiration/epidemiology/*prevention & control ; Metoclopramide/*administration & dosage ; Injections, Intravenous ; Humans ; Antiemetics/*administration & dosage ; Anti-Ulcer Agents/*administration & dosage ; Ambulatory Surgical Procedures ; Adult