Journal of Applied Physiology
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J Appl Physiol 45: 957-961, 1978;
8750-7587/78 $5.00
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Journal of Applied Physiology, Vol 45, Issue 6 957-961, Copyright © 1978 by American Physiological Society

ARTICLES

Lung volumes after antigen infusion in the guinea pig in vivo: effects of vagal section

J. M. Drazen, S. H. Loring and C. Venugopalan

The effects of intravenous antigen infusion on lung volumes and quasi-static deflationary pulmonary compliance in guinea pigs previously sensitized to ovalbumin were studied in vivo. Ovalbumin infusion significantly increased minimal gas volume to a similar extent in animals with intact or cut vagi. Total lung capacity fell only in animals with intact vagi. Quasi-static compliance fell in both groups of animals, but the fall was significantly greater in animals with intact vagi. These data demonstrate that immediate hypersensitivity reactions alter lung volumes and the elastic properties of the lung by both vagal dependent and vagal independent mechanisms.




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