Abstract
A urinary enzyme pattern consisting of two lysosomal enzymes, N-acetyl-beta-glucosaminidase and lysozyme, and one enzyme originating from kidney tubular brush border membrane, alanine-aminopeptidase, were studied in 30 patients undergoing intravenous urography and arteriography. N-acetyl-beta-glucosaminidase and lysozyme showed the greatest diagnostic sensitivity and were still abnormal on the fifth day after the administration of radio contrast agent. The results, which are statistically significant (Student's t test), suggest that radio-contrast agents are potentially nephotoxic.
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