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J Appl Physiol 38: 491-494, 1975;
8750-7587/75 $5.00
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Journal of Applied Physiology, Vol 38, Issue 3 491-494, Copyright © 1975 by American Physiological Society

ARTICLES

Inherited susceptibility of cattle to high-altitude pulmonary hypertension

D. H. Will, J. L. Hicks, C. S. Card and A. F. Alexander

This study examines the hypothesis that susceptibility of cattle to high-altitude pulmonary hypertension and heart failure (high mountain disease) is genetically transmitted. Eight offspring of cattle recovered from high mountain disease were considered "susceptible." Eleven offspring of healthy cattle residing at high altitude were considered "resistant." At the resident altitude of 1,524 m, 10-day-old susceptible calves had higher pulmonary arterial pressures than did resistant calves (34 vs.21 mmHg), but at 90 days of age the pressures for the two groups were similar (26 vs. 24 mmHg). After 64 days of exposure to an altitude of 3,048 m, the susceptible calves (87 +/- 7 (SE) vs. 40 +/- 3 mmHg). By 124 days at 3,048 m, all susceptible but none of the resistant calves had developed heart failure. The results indicated that susceptibility to pulmonary hypertension at high altitude was inherited. Susceptible cattle may provide a useful model of human hypoxic pulmonary hypertension.


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K. L. Shirley, D. W. Beckman, and D. J. Garrick
Inheritance of pulmonary arterial pressure in Angus cattle and its correlation with growth
J Anim Sci, April 1, 2008; 86(4): 815 - 819.
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