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J Physiol Vol 200, Issue 3 pp 797-805
Copyright © 1969 by The Physiological Society
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Sodium ions and the secretion of catecholamines

P. Banks, Rosemary Biggins, R. Bishop, B. Christian and N. Currie

1. Perfusion of bovine adrenal glands with a potassium-free Tyrode solution results in an increased spontaneous release of catecholamines and an increased response to stimulation with carbamylcholine.

2. Perfusion with a Tyrode solution containing 70 mM-KCl causes a marked secretion of catecholamines and a subsequent inhibition of secretion in response to stimulation with carbamylcholine.

3. Perfusion with sodium-free media abolishes or severely reduces the secretory response of the gland to carbamylcholine and to 70 mM-KCl although the basal secretion shows an initial rise.

4. Perfusion with sodium-deficient media permits some retention of the secretory response.

5. A possible role for intracellular sodium ions in the secretion of catecholamines is discussed.




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M. P. Blaustein and W. J. Lederer
Sodium/Calcium Exchange: Its Physiological Implications
Physiol Rev, July 1, 1999; 79(3): 763 - 854.
[Abstract] [Full Text] [PDF]




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