Intracellular calcium–mediated activation of hepatic Na+/H+ exchange by arginine vasopressin and phenylephrine
M. Sawkat Anwer, James M. Atkinson – 1 January 1992 – The effect of Ca+ + mobilizing agonists arginine vasopressin and phenylephrine on Na+/H+ exchange was studied in freshly isolated hepatocytes and isolated perfused rat livers. The activity of Na+/H+ exchange was determined from the rate of H+ efflux, 22Na uptake and pHi recovery. Arginine vasopressin and phenylephrine stimulated H+ efflux and 22Na uptake in isolated rat hepatocytes and increased the rate of pHi recovery from acid‐loaded hepatocytes. These effects were inhibited by amiloride.