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Am J Physiol Regul Integr Comp Physiol 263: R954-R961, 1992;
0363-6119/92 $5.00
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AJP - Regulatory, Integrative and Comparative Physiology, Vol 263, Issue 4 954-R961, Copyright © 1992 by American Physiological Society

ARTICLES

Indomethacin attenuates exercise-induced proteinuria in hypertensive miniature swine

K. P. O'Hagan, D. F. Hora Jr and E. J. Zambraski
Department of Biology, Rutgers University, New Brunswick, New Jersey 08903.

Exercise-induced proteinuria may be increased in hypertensives. The mechanisms underlying the increased proteinuria are not known, and it has not been determined whether animal models of hypertension exhibit a similar response. We investigated whether indomethacin (Indo) altered exercise-induced proteinuria in normal and hypertensive deoxycorticosterone acetate (DOCA) Yucatan miniature swine (YMS). Five normal and four DOCA YMS underwent 30 min of treadmill exercise at 80% of maximal heart rate. Cumulative (exercise + recovery) albumin excretion in the DOCA YMS was 25-fold (P < 0.01) greater than observed in the normal YMS. Indo had no effect on resting or exercise-induced proteinuria in the normal YMS. However, Indo decreased the slightly elevated proteinuria at rest, and normalized the exaggerated exercise-induced proteinuria in the DOCA YMS. The antiproteinuric effect of Indo in the DOCA YMS was not associated with altered exercise, recovery blood pressure, or glomerular filtration rate. Thus hypertensive DOCA YMS exhibit an exaggerated exercise-induced proteinuria. It is suggested that eicosanoids are involved in this abnormal renal proteinuric response to exercise.


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