...Dennis Kolosov; Scott P. Kelly ABSTRACT Cortisol-induced epithelial tightening of a primary cultured rainbow trout gill epithelium model occurs in association with reduced paracellular permeability and increased abundance of select barrier-forming tight junction (TJ) proteins. Corticosteroid...

... reduced and Ocln protein abundance was unchanged. Data indicate that disruption of cutaneous osmoregulation in L. caerulea following Bd infection occurs, at least in part, by an increase in epidermal paracellular permeability in association with compromised integrity of the epidermal TJ complex...

... temperature was primarily caused by reduced active transport, while rectal paracellular permeability to fluorescein isothiocyanate dextran was unchanged at 0 and 30°C. During cold exposure, water reabsorption was independent of major cation gradients across the epithelia, while a reduction in mucosal Cl...

... the fact that TER of SSI epithelia increased from ~70 Ω cm 2 following 24 h in culture to ~4350 Ω cm 2 at 108 h in culture, and paracellular permeability (of [ 3 H]PEG-400) decreased by almost two orders of magnitude over the same culture period. Once insert-cultured epithelia reach a plateau in TER...

...Chris M. Wood; Martin Grosell SUMMARY Paracellular permeability and absorptive water flux across the intestine of the euryhaline killifish were investigated using in vitro gut sac preparations from seawater- and freshwater-acclimated animals. The permeability of polyethylene glycol (PEG), a well...

... change and the associated changes in functional surface area on the paracellular permeability of the gills, fish were anesthetized and injected intraperitoneally with 50 μCi kg –1 of the extracellular marker 3 H-PEG 4000( 3 H-polyethylene glycol 4000; Perkin Elmer, Foster City, CA, USA)using...

...; BW, brackish water; n.d., not determined * Significant difference ( P <0.05) from FW group * Author for correspondence (e-mail: [email protected] ) 18 11 2008 2009 tight junction occludin hydromineral balance Na + ,K + -ATPase paracellular permeability...