OBJECTIVETo study the regulative action of mica monomer powder preparation on the chief and parietal cells as well as G and D cells in the gastric mucosa of the experimental atrophic gastritis (CAG) rats.

METHODSIntervention therapy was given to the experimental CAG rats at three different doses of mica monomer powder preparation to evaluate the changes of chief and parietal cells as well as G and D cells in the gastric mucosa and the histopathological changes of gastric mucosa.

RESULTSMica monomer powder preparation at three different doses could increase the amount of chief and parietal cells as well as G and D cells in gastric mucosa of the experimental CAG rats and alleviate and control the inflammation of gastric mucosa and the atrophy of gastric mucosa glands. Especially, better effects were shown in the mid and high dose groups.

CONCLUSIONMica has the pharmacological action of protecting the gastric mucosa, enhancing blood flow of the gastric mucosa, and consequently improving the inflammatory responses of the gastric mucosa. One of the mechanisms is associated with promoting the secretion of gastric acid and gastric pepsin and regulating the neuroendocrine mechanism including gut hormone secretion (gastrin and somatostatin) by increasing the number of chief and parietal cells as well as G and D cells.

Aluminum Silicates ; pharmacology ; Animals ; Cell Count ; Chief Cells, Gastric ; drug effects ; pathology ; Chronic Disease ; Gastric Mucosa ; drug effects ; pathology ; Gastrin-Secreting Cells ; drug effects ; pathology ; Gastritis, Atrophic ; pathology ; Inflammation ; Parietal Cells, Gastric ; drug effects ; pathology ; Powders ; Rats ; Rats, Sprague-Dawley ; Somatostatin-Secreting Cells ; drug effects ; pathology

OBJECTIVETo study regulative action of mica monomer granule preparation on gastrin (GAS), somatostatin (SS) and G cells as well as D cells of gastric mucosa in experimental chronic atrophic gastritis (CAG) rat.

METHODCAG rats were treated with mica monomer granule preparation with three different dosages--high, moderate and low level respectively. Changes of blood serum GAS, blood plasma SS and G cells as well as D cells of gastric mucosa in CAG rats were observed and detected with ELISA method, RIA method and immunocytochemistry method.

RESULTMica monomer granule of three different dosages could increase the quantity of G cells as well as D cells of gastric mucosa and the concentration of blood serum GAS and decrease the content of blood plasma SS in CAG rat at different level respectively. It was more effective in high and moderate dosage groups.

CONCLUSIONMica has the pharmacological action of protecting gastric mucosa, promoting the palingenesis of gastric gland and enhancing blood stream of gastric mucosa consequently to abate the inflammation reaction of gastric mucosa. Its effective mechanism is associated with the neuroendocrine regulative mechanism of promoting the secretion of gastric acid and gastric pepsin by increasing the amount of G cells as well as D cells and the concentration of blood serum GAS, and reducing inhibiting action on GAS secretion and enhancing the secretion of GAS by decreasing the content of SS.

Aluminum Silicates ; administration & dosage ; pharmacology ; Animals ; Dose-Response Relationship, Drug ; Gastric Mucosa ; pathology ; Gastrin-Secreting Cells ; drug effects ; Gastrins ; blood ; Gastritis, Atrophic ; blood ; pathology ; Materia Medica ; administration & dosage ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Somatostatin ; blood ; Somatostatin-Secreting Cells ; drug effects

There are many reports about causes of corrosive agents such as acids and alkaline and occasionally hot food in either liquid or solid forms as causes of upper gastrointestinal mucosal injury. However, there have been no reports on bowel preparation solutions as a cause of upper gastrointestinal injury. We describe a case of bowel preparation solution (PICOLIGHT powder) induced thermal injury of the gastric mucosa with a review of the literature.
Cathartics ; Gastric Mucosa*

BACKGROUND: CD99 is characteristically expressed in Ewing's sarcoma/primitive neuroendocrine tumors and its immunoreactivity has also been reported in gastrointestinal neuroendocrine tumors. However, the normal distribution of CD99 reactive cells in gastrointestinal mucosa and their function are not fully understood. METHODS: We performed an immunohistochemical study using antibodies to CD99 and gastrin on formalin fixed and paraffin embedded tissue of the stomach. RESULTS: CD99 were strongly expressed in the gastric glands of neonate (3/3) and infant (1/1) cases but not detected in the fetal period (0/30). In adults, CD99 was observed in 36.8% (7/19). The number of CD99 positive cells were fewer in adult (3.48+/-6.43) than in neonate (5.66+/-0.58) and infant (11.33+/-2.21). CD99 was mostly located along the cytoplasmic membrane of glandular cells but cytoplasmic expression was also evident in neonate and infant cases. The G cells and CD99 expressed cells were reduced in the area showing intestinal metaplasia and atrophic change. As a result of the double stain, some of the G cells coexpress CD99 antigen, which were more in neonate (29%) than in adult (2.6%). CONCLUSIONS: The CD99 positive cells were found in the gastric pyloric antrum during the postnatal period and progressively reduced with age. This suggests the participation of CD99 protein in the differentiation and secretory process of neuroendocrine cells.
Adult ; Antibodies ; Cell Membrane ; Cytoplasm ; Formaldehyde ; Gastric Mucosa* ; Gastrin-Secreting Cells ; Gastrins ; Humans* ; Infant ; Infant, Newborn ; Metaplasia ; Mucous Membrane ; Neuroendocrine Cells ; Neuroendocrine Tumors ; Paraffin ; Pyloric Antrum ; Secretory Pathway ; Stomach

This experiment was performed to evaluate the morphological responses of 5-fluorouracil or mitomycin C on the gastric parietal cells of mouse. 5 -fluorouracil (30 mg/kg) or mitomycin C (400 micro gram/kg) were injected subcutaneously every other day, and the animals were sacrificed at 4th day and 7th day following the first injection. Pieces of the tissue were taken from the stomach, prefixed with 2.5% glutaraldehyde -1.5% paraformaldehyde, followed by post-fixation with 1% osmium tetroxide. The ultrathin sections were stained with uranyl acetate and lead citrate. In both of the 5-fluorouracil or the mitomycin C treated groups, most parietal cells showed severely reduced luminal spaces of the intracellular canaliculi, since microvilli of intracellular canaliculi were very irregular shaped and nearly contacted with each other, and the cytoplasmic tubulovesicular membranes were disintegrated and indistinct. The changes in the 5-fluorouracil treated group were more indistinct than in those of the mitomycin C treated group. In the 5-fluorouracil treated group, balooning of the cytoplasm, focal cytolysis, myelin figures, lysosomes and multivesicular bodies in the parietal cells were observed more frequently than in those of the mitomycin C treated group. Above results suggest that the 5-fluorouracil or mitomycin C treated animals might suffer from reduced acid secretion of the parietal cell, since the collapsed lumen of the intracellular canaliculi, the disintegration of the tubulovesicular membranes, and the reduction of cell organelles in the parietal cells are occurred within a few days following injections. 5-fluorouracil was proved more harmful on the parietal cell than mitomycin C does.
Animals ; Citric Acid ; Cytoplasm ; Fluorouracil* ; Gastric Mucosa ; Glutaral ; Lysosomes ; Membranes ; Mice* ; Microvilli ; Mitomycin* ; Multivesicular Bodies ; Myelin Sheath ; Organelles ; Osmium Tetroxide ; Parietal Cells, Gastric* ; Phenobarbital ; Rabeprazole ; Stomach

This experiment was performed to evaluate the morphological responses of the gastric parietal cells of mouse inoculated with Ehrlich carcinoma cells, following administration of Bacillus Calmette -Guerin (BCG) or acriflavine -guanosine composition (AG60, Taerim Pharm. Co. Seoul, Korea). In the experimental groups, each mouse was inoculated with 1 X 10(7) Ehrlich carcinoma cells subcutaneously in the inguinal area. From next day, 0.2 ml of saline, BCG (0.03 X 10(8) ~0.32 X 10(8) CFU) or AG60 (30 mg/kg) was injected subcutaneously to the animals every other day. Animals were sacrificed on the 14th day from the first injection. Pieces of the tissue were taken from the stomach, prefixed with 2.5% glutaraldehyde -1.5% paraformaldehyde, followed by post -fixation with 1% osmium tetroxide. The ultrathin sections stained with uranyl acetate and lead citrate were observed with a JEM 100CX -II electron microscope. In the experimental control, the BCG and the AG60 treated groups, most parietal cells showed reduced lumenal spaces of the intracellular canaliculi, since microvilli of intracellular canaliculi were very irregularly shaped and crowed with each other. And in the BCG and the AG60 treated mice, myelin figures, lysosomes and multivesicular bodies in the parietal cells were observed more frequently than in those of the experimental control ones. In the BCG treated rats, membranes of the tubulovesicles of the parietal cells were disintegrated, but the similar changes were not observed in the AG60 treated mice,. Above results suggest that the BCG treated animals inoculated with Ehrlich carcinoma cells might suffer from reduced acid secretion of the parietal cell, since the disintegration of the tubulovesicular membranes in the parietal cells are occurred following injections. Whereas AG60 dose not affect remakably defect on the parietal cells.
Acriflavine ; Animals ; Bacillus ; Citric Acid ; Crows ; Gastric Mucosa ; Glutaral ; Lysosomes ; Membranes ; Mice* ; Microvilli ; Multivesicular Bodies ; Mycobacterium bovis* ; Myelin Sheath ; Osmium Tetroxide ; Parietal Cells, Gastric* ; Rabeprazole ; Rats ; Seoul ; Stomach

Gastritis cystica polyposa (GCP) is a rare lesion characterized by hyperplastic and cystic dilatation of the gastric mucous glands infiltrating into the underlying submucosa. A cumulative experience suggests that GCP represents a manifestation of a spectrum of reactive inflammatory responses to mucosal injury. The case reported herein is a GCP developed as multiple polypoid lesions with a circular arrangement in the gastric mucosae along the gastrojejunostomy site.
Dilatation ; Gastric Bypass ; Gastric Mucosa ; Gastritis*

Heterotopia refers to the finding of normal tissue in foreign sites, entirely separate from the main organ. Heterotopic gastric mucosa has been observed throughout the alimentary tract, everywhere from the oral cavity to the rectum. However, occurrences in the umbilicus are an extremely rare and peculiar phenomena. We report the case of heterotopic gastric mucosa in the umbilicus.
Gastric Mucosa ; Mouth ; Rectum ; Umbilicus

No abstract available.
Gastric Mucosa* ; Helicobacter pylori* ; Helicobacter*

No abstract available.
Gastric Mucosa* ; Meckel Diverticulum* ; Ulcer*