alexa Diagnostic potential of urinary enzymes and beta 2-microglobulin in acute urinary tract infection.


International Journal of Inflammation, Cancer and Integrative Therapy

Author(s): Sandberg T, Bergmark J, Hultberg B, Jagenburg R, Trollfors B

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Abstract Urinary excretions of beta 2-microglobulin (beta 2M), N-acetyl-beta-D-glucosaminidase (NAG), alanine aminopeptidase, beta-glucuronidase, acid and neutral alpha-glucosidase as indicators of proximal tubular dysfunction were measured in patients with acute upper and lower urinary tract infection (UTI) and fever of non-renal origin. The sensitivity of beta 2M was 67\% and of NAG 49\% as assessed in more than 100 episodes of acute pyelonephritis. Combined use of beta 2M and NAG increased the sensitivity to 75\%. The degree of beta 2-microglobulinuria and enzymuria was comparable in patients with acute pyelonephritis and fever due to non-renal infections. The excretion of beta 2M and the various enzymes was too variable and unpredictable in individual cases to be useful as diagnostic indicator. In localizing an acute UTI, tests for proximal tubular dysfunction seem to be of no more clinical value than properly measured body temperature.
This article was published in Acta Med Scand and referenced in International Journal of Inflammation, Cancer and Integrative Therapy

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