Gastric Mucins
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Is the colon mucosa affected by ten days of gastric restriction in an animal model?
Abstract Purpose To identify whether the colon mucosa is affected by ten days of gastric restriction in an animal model. Methods An experimental model of gastric restriction was devised using rats. The animals were submitted to surgical gastrostomy, and a cylindrical loofah was inserted into the stomach. We studied 30 adult male Wistar rats divided into
Acta Cir. Bras.. Publicado em: 19/08/2019
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2. Morphological study of the gastrointestinal tract of Larimichthys crocea (Acanthopterygii: Perciformes)
ABSTRACT The present study aimed to investigate the macroscopic and histological structure of the gastrointestinal tract (GIT) of Larimichthys crocea (Richardson, 1846). It consists of esophagus, stomach regions, pyloric caeca, intestinal regions, and rectum. Sixteen tubular light yellowish pyloric caeca of similar sizes were observed in all individuals. The
Zoologia (Curitiba). Publicado em: 14/11/2018
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3. Helicobacter pylori adhesion to gastric epithelial cells is mediated by glycan receptors
Helicobacter pylori adhesion to gastric epithelial cells constitutes a key step in the establishment of a successful infection of the gastric mucosa. The high representation of outer membrane proteins in the bacterial genome suggests the relevance of those proteins in the establishment of profitable interactions with the host gastric cells. Gastric epithelia
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07
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4. Adenocarcinoma do estômago: análise de aspectos morfológicos e do perfil imuno-histoquímico de mucinas dos tipos histológicos propostos na classificação da Sociedade Brasileira de Patologia, 2005 / Adenocarcinoma of the stomach: analysis of morphological and immunohistochemical profile of mucin-type proposed histological classification of the Brazilian Society of Pathology, 2005
Aiming at a critical assessment of the histological types proposed at the classification of Brazilian Society of Pathology for gastric adenocarcinoma, we studied herein the histological and immunohistochemical profile of mucins in 272 gastric adenocarcinoma surgical samples from Hospital das Clínicas University of São Paulo School of Medicine. The casuisti
Publicado em: 2009
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5. Morphology of the alimentary canal of the gecko Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata: Gekkonidae) / Morfologia do tubo digestivo da lagartixa Hemidactylus mabouia (Moreau de Jonnès, 1818) (Squamata: Gekkonidae).
Hemidactylus mabouia is the gecko species more thoroughly distributed in Brazil, being common in anthropic atmospheres, what turns easy its use as model for study of the reptiles. Likewise, aiming at to describe morphologically the alimentary canal of H. mabouia, 17 adult specimens were used, being collected fragments of the esophagus, of the oesophagogastri
Publicado em: 2009
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6. Degradation of pig gastric and colonic mucins by bacteria isolated from the pig colon.
Mucin degradation was studied with one Clostridium (RS42) and two Bacteroides (RS2 and RS13) strains isolated from the pig colon mucosa. Mucins from pig colon and stomach were prepared in their subunit forms for use as growth substrates, and the loss of the individual sugars from the mucins was measured after bacterial growth. Colonic mucin was more resistan
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7. Binding of Cholera Toxin to Mucins and Inhibition by Gastric Mucin
The effects of mucin on cholera toxin induced intestinal secretion was studied in the rat small intestine. Gastric mucin inhibited secretion when premixed with cholera toxin on an equal dry-weight basis. Neither salivary nor intestinal mucin inhibited the toxin's action in the intestine. Inhibition by gastric mucin was not reversed by a mucolytic agent or by
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8. In vitro utilization of mucin by Bacteroides fragilis.
A method for isolating pig colon mucin in a soluble high-molecular-weight form, suitable for addition to bacterial growth media, is described. This preparation was utilized as a sole carbohydrate energy source by two strains of Bacteroides fragilis. The extent of degradation was compared with that of commercial pig gastric mucin by the same strains. Gas-liqu
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9. Kinetics of proteolysis of hog gastric mucin by human neutrophil elastase and by Pseudomonas aeruginosa elastase.
Human neutrophil and Pseudomonas aeruginosa elastases were compared for their ability to degrade hog gastric mucin, which was used as a model substrate. P. aeruginosa elastase was more active than neutrophil elastase, and 2 to 10 peptide bonds were hydrolyzed within 5 min. The results demonstrate that both elastases degrade mucins actively at concentrations
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10. Epstein-Barr Virus–associated Gastric Carcinoma: A Distinct Carcinoma of Gastric Phenotype by Claudin Expression Profiling
Epstein-Barr virus (EBV)-associated gastric carcinoma (GC) is a distinct subtype with characteristic clinicopathological features. To better characterize its cellular characteristics, 43 cases of EBV-associated GC, 68 cases of EBV-negative GC, and non-neoplastic gastric mucosa in adults and fetuses were examined immunohistochemically. We quantified the expre
Histochemical Society.
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11. Glycoconjugate Binding of Gastric and Enterohepatic Helicobacter spp.
Helicobacter pylori is able to utilize several lectin-like, protein-carbohydrate interactions for binding to mucins, cell surfaces, and extracellular matrix proteins. As determined by hemagglutination assays and binding of radiolabeled bacteria to glycosphingolipids on thin-layer chromatograms, strains of gastric helicobacters and enterohepatic helicobacters
American Society for Microbiology.
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12. Fermentation of mucin and plant polysaccharides by strains of Bacteroides from the human colon.
Ten Bacteroides species found in the human colon were surveyed for their ability to ferment mucins and plant polysaccharides ("dietary fiber"). A number of strains fermented mucopolysaccharides (heparin, hyaluronate, and chondroitin sulfate) and ovomucoid. Only 3 of the 188 strains tested fermented beef submaxillary mucin, and none fermented porcine gastric