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Research Article Free access | 10.1172/JCI112817

Beta-adrenergic agonists increase lung liquid clearance in anesthetized sheep.

Y Berthiaume, N C Staub, and M A Matthay

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Published February 1, 1987 - More info

Published in Volume 79, Issue 2 on February 1, 1987
J Clin Invest. 1987;79(2):335–343. https://doi.org/10.1172/JCI112817.
© 1987 The American Society for Clinical Investigation
Published February 1, 1987 - Version history
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Abstract

We did experiments to determine whether beta-adrenergic agonists increase lung liquid clearance in anesthetized ventilated adult sheep and, if so, whether the increase is mediated by beta receptors and what mechanism is involved. We instilled 100 ml of autologous serum either alone or with a beta-adrenergic agonist (terbutaline, 10(-5) M, or epinephrine, 5.5 X 10(-6) M) into one lower lobe. After 4 h both terbutaline and epinephrine increased lung liquid clearance. The increase in lung liquid clearance was inhibited when propranolol (a beta blocker) or amiloride (a sodium channel blocker) was added to the terbutaline. Increased clearance was not explained by changes in pulmonary hemodynamics, pulmonary blood flow, or lung lymph flow. We conclude that beta-adrenergic agonists increase lung liquid clearance in anesthetized intact adult sheep. This increase is mediated through beta receptors and probably depends on increased active transport of sodium across the alveolar barrier.

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