Vergleichende Untersuchung zur diagnostischen Wertigkeit von Diskelektrophorese der Urinproteine und N-Acetylglucosaminidaseausscheidung zur Erkennung von tubulären Nierenschädigungen bei chronischer Polyarthritis

Abstract

A method is described for the determination of the enzyme N-acetyl-beta-D-glucosaminidase in gel-filtered urine. The individual reaction parameters were tested, and the reliability of the method was determined. The stability of the enzyme in urine was investigated at different temperatures over a 6 week period. The excretion of N-acetyl-beta-D-glucosaminidase, like the analysis of urinary proteins by disc electrophoresis, is a sensitive parameter for renal damage. The two methods were compared, using 50 random urine samples from patients with chronic polyarthritis; both methods were found to have equal diagnostic value.