The influence of sodium on calcium movements and catecholamine release in thin slices of bovine adrenal medulla.

1. 45Ca efflux and uptake, net Ca movements, and catecholamine secretion were studied in thin slices of bovine adrenal medulla. 2. There was a slow component of 45Ca wash-out which is attributed to efflux to intracellular Ca. This efflux was strongly influenced by cations in the external solution, being reduced by 50% when Mg replaced Ca, and the residual… CONTINUE READING