Bidirectional transport of glutathione in hepatocyte membranes: Does glutathione efflux stimulate organic anion uptake?
Ned Ballatori – 1 April 1993 – We determined the trans effects of extracellular reduced glutathione (GSH) on the rate of efflux of endogenous labeled GSH from freshly isolated rat hepatocytes. The presence of GSH (10 mM) in the medium significantly stimulated the fractional rate of efflux of [35S]GSH from 5.2 to 12.6%/15 min (p < 0.01). This effect was concentration‐dependent, had sigmoid type of kinetics (D50 of 0.32 mM), and was reversible upon removal of external GSH.