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Simultaneous measurements of the plasma concentrations of renin, renin-substrate, angiotensin II and aldosterone were made in seven patients with the nephritic syndrome and in five normal subjects studied under the same controlled conditions. Plasma renin-substrate concentration was found to be reduced in some patients. Although plasma renin concentration was frequently elevated, plasma angiotensin II and aldosterone concentrations were generally within the normal range.
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Medina et al. (2008) studied this question.
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