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Journal of the American Society of Nephrology, Vol 3, 1113-1118, Copyright © 1992 by American Society of Nephrology

REGULAR ARTICLES

Effect of epidermal growth factor in the rat 5/6 renal ablation model

DW Moskowitz, AN Schneider, PH Lane, PG Schmitz and KN Gillespie
Department of Internal Medicine, St. Louis University Medical Center, MO.

Acute administration of epidermal growth factor (EGF) has been shown to promote recovery from ischemic and nephrotoxic acute renal failure in vivo. The question of whether chronic subcutaneous administration of EGF (19.1 micrograms/day for 3 or 6 wk) could alter the course of chronic renal failure in rats subjected to 5/6 nephrectomy was studied. By week 6, there was no difference in renal function, as assessed by animal survival, BUN, urea and inulin clearances, proteinuria, renal morphometry, or renal size, between EGF- and vehicle-treated rats. This suggests that chronic renal insufficiency differs from acute tubular injury in its sensitivity to exogenous EGF. Unexpectedly, EGF significantly attenuated the rise in systolic blood pressure that occurred by the fourth week after 5/6 nephrectomy. The antihypertensive effect of EGF was still evident at week 5. Urinary flow rate, free water clearance, and excretion of total solutes, Na+, and K+, however, were not significantly altered by EGF at weeks 2, 4, 5, or 6, suggesting a mechanism other than increased natriuresis or diuresis for this antihypertensive effect.


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A. Erdely, L. Wagner, V. Muller, A. Szabo, and C. Baylis
Protection of Wistar Furth Rats from Chronic Renal Disease Is Associated with Maintained Renal Nitric Oxide Synthase
J. Am. Soc. Nephrol., October 1, 2003; 14(10): 2526 - 2533.
[Abstract] [Full Text] [PDF]


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