...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...

... preparations exhibit more conservative alterations in transcript abundance (see Figs 3 , 4 , 6 , 7 ). This is despite 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...

...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...

... surface area but instead was markedly reduced, and (4) fish appeared to specifically regulate branchial Cl – loss in the face of increasing functional lamellar surface area despite a marked increase in general paracellular permeability (PEG efflux). Modification of the ambient temperature, while...

... for correspondence (e-mail: [email protected] ) 18 11 2008 2009 tight junction occludin hydromineral balance Na + ,K + -ATPase paracellular permeability osmoregulation amphibian The osmoregulatory capabilities of aquatic vertebrates are defined by the barrier and transport properties...