Figure 9.
PIP 640 selectively enhances apical to basal paracellular permeability of positively-charged dextran in vitro. A) Demonstration of reversibility of TEER values following washout 60 min after apical exposure to 1 mM PIP 640 in Caco-2 cells monolayer used to assess dextran permeability. B) Cumulative apical to basal transport after 60 min of positively-charged DEAE-dextran (+ve) or negatively-charged CM-dextran (-ve) compared to neutral dextran (all 4-kDa in size). Data are means ± SEM (*P < 0.05, **P < 0.01 and ***P <0.001).