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pubmed-article:7559806pubmed:abstractTextThe composition and permeability of the pericellular coat surrounding normal human mesothelial (NHM) cells have been studied in vitro. NHM cells were grown in the presence of 3H-glucosamine and the amount of label recovered in hyaluronan and chondroitin sulfate was determined after selective enzymatic digestion of the polysaccharides in medium, pericellular, and intracellular pools. For comparison a similar analysis was carried out on mesothelioma cells (Mero-14). Of the labeled polysaccharides in the medium and pericellular pools of NHM cells about 80-90% could be ascribed to hyaluronan and only 3-5% to chondroitin sulfate. In contrast, Mero-14 synthesized only minute amounts of hyaluronan whereas chondroitin sulfate corresponded to 61% of the total glycosaminoglycans in the culture. The results exclude a structure of the pericellular layer of NHM cells similar to the hyaluronan-proteoglycan aggregates found in cartilage. The permeability of the pericellular layer was tested by the exclusion of polystyrene microspheres and bacteria of diameter 0.1-3.0 microns, as well as erythrocytes of diameter 7 microns. While the erythrocytes were excluded the smaller particles penetrated the coat. By adding 0.5 mg/ml of aggregating cartilage proteoglycan to the medium particles of 0.3 microns or larger were also excluded. Thus exogenous proteoglycans can reinforce the structure of the pericellular layer.lld:pubmed
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pubmed-article:7559806pubmed:authorpubmed-author:SuzukiMMlld:pubmed
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pubmed-article:7559806pubmed:pagination54-61lld:pubmed
pubmed-article:7559806pubmed:dateRevised2010-11-18lld:pubmed
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pubmed-article:7559806pubmed:year1995lld:pubmed
pubmed-article:7559806pubmed:articleTitleChondroitin sulfate proteoglycan modulates the permeability of hyaluronan-containing coats around normal human mesothelial cells.lld:pubmed
pubmed-article:7559806pubmed:affiliationDepartment of Medical and Physiological Chemistry, University of Uppsala, Sweden.lld:pubmed
pubmed-article:7559806pubmed:publicationTypeJournal Articlelld:pubmed
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pubmed-article:7559806pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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