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Research Article Free access | 10.1172/JCI109137

Multiple forms of human plasma renin substrate.

P Eggena, H Hidaka, J D Barrett, and M P Sambhi

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Published August 1, 1978 - More info

Published in Volume 62, Issue 2 on August 1, 1978
J Clin Invest. 1978;62(2):367–372. https://doi.org/10.1172/JCI109137.
© 1978 The American Society for Clinical Investigation
Published August 1, 1978 - Version history
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Abstract

The objective of this investigation was to determine whether heterogeneity of plasma renin substrate could be observed in states of steroid excess and various forms of hypertensive disease. In states of stimulated renin substrate production by estrogens or glucocorticoids, multiple forms of renin substrate were apparent when stimulation was excessive. Stimulation of substrate production caused by uremia associated with hypertension showed similar results. None, or only trace quantities of the additional forms of renin substrate were evident in subjects with normal or suppressed levels of plasma renin substrate. The additional forms of renin substrate could be distinguished from the normal form on the basis of cross-reactivity with a specific antiserum to the normal form, electrophoretic mobility, and kinetic rate constants. Differences in rate constants of the various forms of plasma renin substrate may account for the altered rate of the renin reaction associated with several states of hypertension. In plasma of patients with renovascular hypertension, significant quantities of a protein which cross-reacted with the antiserum but could not generate angiotensin I were observed.

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