Investigation of the reserves of the fibrinolytic system with the aid of protein stimulation was carried out in 10 patients with chronic glomerulonephritis and in 10 patients suffering from amyloidosis. All the patients manifested proteinuria exceeding 3.5 g/day and other symptoms of nephrotic syndrome of varying intensity. Renal function was preserved in all the patients. The reserves of the fibrinolytic system were measured by analyzing blood plasma and urine before and after beef protein stimulation. The data revealed reciprocal responses of activator activity in blood plasma and urine in patients suffering from chronic glomerulonephritis and amyloidosis. In patients with amyloidosis, the test revealed complete depletion of activator activity in urine while its considerable reserves were preserved in blood plasma of the systemic channel.
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