What are the physiological mechanisms for sensing extracellular potassium concentration?

Updated: Dec 06, 2018
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Physiologic mechanisms for sensing extracellular potassium concentration are not well understood. Adrenal glomerulosa cells and pancreatic beta cells may play a role in potassium sensing, resulting in alterations in aldosterone and insulin secretion. [4, 5] As the adrenal and pancreatic hormonal systems play important roles in potassium homeostasis, this would not be surprising; however, the molecular mechanisms by which these potassium channels signal changes in hormone secretion and activity have still not been determined.


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