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- W2040353509 abstract "The effects of 30 min exposure to 10% v/v cryoprotectant (glycerol, dimethyl sulfoxide, or propane-1,2-diol) on intercellular junctions were investigated in monolayers of epithelial (MDCK) cells. The cells were grown on microporous membrane filters and transepithelial resistance was monitored as an index of junction integrity. At 22 degrees C, Me2SO had the least effect of the three cryoprotectants, causing a gradual fall in transepithelial resistance of only 17% in 30 min. This compares with falls of 50% in 15 min and 37% over 30 min, respectively, with glycerol and propane-1,2-diol. At 0 degrees C, however, propane-1,2-diol had no effect on transepithelial resistance, whereas the effect of Me2SO was now similar to that of glycerol, viz. a sustained reduction in resistance of approximately 30% throughout the 30-min exposure. The results could not be explained solely in terms of osmotic effects and suggested that the cryoprotectants were directly affecting components of the junctional complex or associated elements of the cytoskeleton. During removal of the cryoprotectants by two-step dilution, changes in transepithelial resistance showed little consistency between the different cryoprotectants. This suggested that the pattern of change was dictated more by the state of the junctions immediately before removal of the cryoprotectants, with each cryoprotectant having affected the junctions to different extents and perhaps by different mechanisms, than by the removal of cryoprotectant itself. Thus, intercellular junctions in epithelial sheets were affected by even modest concentrations of cryoprotectant, but the effect was influenced by the type of cryoprotectant and by temperature of exposure.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W2040353509 date "1995-02-01" @default.
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- W2040353509 title "Differing Effects of Various Cryoprotectants on Intercellular Junctions of Epithelial (MDCK) Cells" @default.
- W2040353509 doi "https://doi.org/10.1006/cryo.1995.1004" @default.
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