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J Appl Physiol 73: 1457-1460, 1992;
8750-7587/92 $5.00
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Journal of Applied Physiology, Vol 73, Issue 4 1457-1460, Copyright © 1992 by American Physiological Society

ARTICLES

Turnover of hyaluronan in the rabbit pleural space

S. J. Allen, R. E. Fraser, U. B. Laurent, R. K. Reed and T. C. Laurent
Department of Anesthesiology, University of Texas, Houston 77030.

Hyaluronan influences lung fluid balance. The clearance of lung hyaluronan by way of the pulmonary lymphatics and the pleural space is increased when fluid flux into the interstitium is increased. The purpose of this study was to determine the rate at which hyaluronan is removed from the pleural space. We injected hyaluronan, labeled with tritium in the acetyl group, into the pleural space of six rabbits. The appearance of [3H]H2O in serum was measured over time to calculate the turnover rate of hyaluronan. We found that the half-lives ranged between 8 and 15 h and were positively related to the amount of hyaluronan injected. At the end of the experiment, the contralateral pleural space was irrigated to determine the amount of pleural space hyaluronan, which was 0.3 micrograms/kg body wt.


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[Abstract] [Full Text] [PDF]


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