Potassium secretion by neonatal rat distal colon

  title={Potassium secretion by neonatal rat distal colon},
  author={Jiř{\'i} P{\'a}cha and Michael Popp and K. {\vC}apek},
  journal={Pfl{\"u}gers Archiv - European Journal of Physiology},
Electrogenic K+ secretion across the distal colon of young rats was investigated by measuring the sensitivity of the short-circuit current to Ba2+ added to the mucosal side of the tissue. Ba2+-sensitive short-circuit current (I sc Ba ) was high during the suckling and weaning periods but very low in adult animals. Increasing the mucosal K+ concentration was accompanied by the inhibition of the serosa-to-mucosaI sc Ba and the induction of the mucosa-to-serosaI sc Ba . TheI sc Ba was decreased by… CONTINUE READING