The mechanisms by which the colon handles potassium have been the subject of
controversy for several years. However, recent studies have provided compelling evidence …

The present in vivo studies were performed in the rat to determine whether the colon was
capable of net potassium absorption, as well as secretion, and to further elucidate the …

Previous studies of rabbit descending colon have disagreed concerning potassium transport
across this epithelium. Some authors reported active K+ secretion under in vitro short …

In vitro preparations of rabbit descending colon were studied under steady-state short-circuit
conditions to determine 1) the K concentration dependence of unidirectional K fluxes; 2) the …

Unidirectional mucosal-to-serosal (Jm leads to s) and serosal-to-mucosal (Js leads to m)
fluxes of potassium and sodium were determined simultaneously on paired sections of …

Fluxes of K from mucosa to serosa or serosa to mucosa have been examined in stripped
preparations of rabbit proximal and distal colon in vitro under short-circuit conditions in …

The colon has large capacities for K+ absorption and K+ secretion, but its role in maintaining
K+ homeostasis is often overlooked. For many years, passive diffusion and/or solvent drag …

To determine the effect of variations in body stores of potassium on the rate of active
potassium transport in the large intestine, unidirectional 42K fluxes were performed under …

1. Adrenaline (5 microM) stimulated a K+ secretory current by 2.2 mu equiv h‐1 cm‐2 in
isolated guinea‐pig distal colonic epithelium. This secretory activity was inhibited entirely by …

To characterize and contrast the active potassium absorptive and secretory processes
present in the rat colon, unidirectional 42K fluxes were performed under short-circuit …