Water intake in hypovolemic sheep: effects of crushing the left atrial appendage

Sheep increased their water intake in proportion to the amount of protein-free, isosmotic fluid that was removed from their blood by ultrafiltration. This behavioral response to hypovolemia was eliminated by crushing the left atrial appendage of the heart. The surgical maneuver had no effect on basa...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1981-01, Vol.211 (4481), p.489-491
Hauptverfasser: Zimmerman, Mark B., Blaine, Edward H., Stricker, Edward M.
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container_issue 4481
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container_title Science (American Association for the Advancement of Science)
container_volume 211
creator Zimmerman, Mark B.
Blaine, Edward H.
Stricker, Edward M.
description Sheep increased their water intake in proportion to the amount of protein-free, isosmotic fluid that was removed from their blood by ultrafiltration. This behavioral response to hypovolemia was eliminated by crushing the left atrial appendage of the heart. The surgical maneuver had no effect on basal water intake or on the drinking response to a salt load. These findings suggest that left atrial stretch receptors, which influence secretion of antidiuretic hormone when stimulated, may also play an important role in mediating thirst during hypovolemia.
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source MEDLINE; American Association for the Advancement of Science; Jstor Complete Legacy
subjects Animals
Antibodies
Appendages
Blood
Blood Pressure
Blood Proteins - metabolism
Blood Volume
Crushing
Crystallins
Drinking Behavior - physiology
Female
Glomerular Filtration Rate
Heart - innervation
Heart - physiology
Hypovolemia
Mechanoreceptors - physiology
Physiological aspects
Plasma volume
Sex
Sheep
Sodium - blood
Space life sciences
Thirst
Thirst - physiology
Tumors
Water
Water filtration
title Water intake in hypovolemic sheep: effects of crushing the left atrial appendage
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