Ras Mutation Impairs Epithelial Barrier Function to a Wide Range of Nonelectrolytes
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چکیده
منابع مشابه
Ras mutation impairs epithelial barrier function to a wide range of nonelectrolytes.
Although ras mutations have been shown to affect epithelial architecture and polarity, their role in altering tight junctions remains unclear. Transfection of a valine-12 mutated ras construct into LLC-PK1 renal epithelia produces leakiness of tight junctions to certain types of solutes. Transepithelial permeability of D-mannitol increases sixfold but transepithelial electrical resistance incre...
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The simplest multicellular animal organisms, coelenterates, are essentially floating intestines in the sea. More fundamentally, they are ‘barrier tubes’ that attempt to compartmentalize the environment they exist in. It is said that ontogeny recapitulates phylogeny. It is thus interesting that the blastocyst, among the earliest multicellular embryonic structures, is essentially a sac comprised ...
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Meprin metalloproteases are highly expressed at the luminal interface of the intestine and kidney and in certain leukocytes. Meprins cleave a variety of substrates in vitro, including extracellular matrix proteins, adherens junction proteins, and cytokines, and have been implicated in a number of inflammatory diseases. The linkage between results in vitro and pathogenesis, however, has not been...
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We examined the impact of chronic stress on rat growth rate and intestinal epithelial physiology and the role of mast cells in these responses. Mast cell-deficient (Ws/Ws) rats and +/+ littermate controls were submitted to water avoidance stress or sham stress, 1 h/day, for 5 days. Seven hours after the last sham or stress session, jejunal segments were mounted in Ussing chambers, in which secr...
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ژورنال
عنوان ژورنال: Molecular Biology of the Cell
سال: 2005
ISSN: 1059-1524,1939-4586
DOI: 10.1091/mbc.e05-04-0294