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Occludin Endocytosis is Involved in Disruption of the Intestinal Epithelial Barrier in a Mouse Model of Alcoholic Steatohepatitis.

08:00 EDT 12th July 2019 | BioPortfolio

Summary of "Occludin Endocytosis is Involved in Disruption of the Intestinal Epithelial Barrier in a Mouse Model of Alcoholic Steatohepatitis."

Chronic ethanol exposure disturbs the intestinal epithelial barrier by inducing detachment of intercellular tight junctions (TJs). However, the mechanisms underlying this process remain unclear. Here, we investigated the involvement of endocytosis of occludin, a key component of TJs, in ethanol-induced disassembly of TJs in a model of alcoholic steatohepatitis.

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This article was published in the following journal.

Name: Journal of digestive diseases
ISSN: 1751-2980
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Medical and Biotech [MESH] Definitions

A MARVEL domain protein that binds to and regulates PROTEIN PHOSPHATASE 1. Occludin plays an important role in the formation and regulation of the TIGHT JUNCTION paracellular permeability barrier.

A cell adhesion molecule that is expressed on the membranes of nearly all EPITHELIAL CELLS, especially at the junctions between intestinal epithelial cells and intraepithelial LYMPHOCYTES. It also is expressed on the surface of ADENOCARCINOMA and epithelial tumor cells. It may function in the MUCOSA through homophilic interactions to provide a barrier against infection. It also regulates the proliferation and differentiation of EMBRYONIC STEM CELLS.

Guanylate cyclase-coupled receptors that bind bacterial ENTEROTOXINS, as well as the endogenous peptides guanylin and uroguanylin. Ligand binding stimulates production of CYCLIC GMP by EPITHELIAL CELLS of the intestinal lumen, altering barrier permeability and mucus secretion. Mutations in the gene (GUCY2C) encoding this receptor are associated with some cases of hereditary diarrhea (Diarrhea 6) and MECONIUM ILEUS.

Cellular uptake of extracellular materials within membrane-limited vacuoles or microvesicles. ENDOSOMES play a central role in endocytosis.

The barrier between capillary blood and alveolar air comprising the alveolar EPITHELIUM and capillary ENDOTHELIUM with their adherent BASEMENT MEMBRANE and EPITHELIAL CELL cytoplasm. PULMONARY GAS EXCHANGE occurs across this membrane.

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