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Войти в исследования Clinical chemistry and laboratory medicine · 2007
Diagnostic performance of combined specific urinary proteins and urinary flow cytometry in urinary tract pathology.
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Penders Joris, Fiers Tom, Everaert Karel, Barth Joeri, Dhondt Annemieke W, Delanghe Joris R
Аннотация
BACKGROUND: Urinalysis comprises three techniques: urinary flow cytometry, test strip analysis and determination of specific urinary proteins. We investigated the diagnostic possibilities of combining these methods for a cohort of patients with a variety of well-documented urological and nephrological pathology.
METHODS: Urinary samples from 407 in- and out-patients with nephrological or urological pathology were retrospectively included in our study. Test strip analysis (URISYS 2400), urinary flow cytometry (UF-100) and urinary protein analysis [albumin, total protein, alpha1-microglobulin (A1M), alpha2-macroglobulin (A2M)] were performed.
RESULTS: In discriminating upper and lower urinary tract infections, A1M and A1M/log(white blood cells) can be used, whereas pathological casts only give poor discrimination. The ratio A2M/log(red blood cells; RBC) allows differentiation between cystitis and pyelonephritis, while glomerular diseases can be recognised by the log(RBCxurinary total protein). Combining A2M and urinary albumin allows the determination of acute prostatitis.
CONCLUSIONS: Using combined parameters provided by various urinalysis techniques, ratios can be proposed with diagnostic value for classifying renal and urological conditions. Possible integration in computer-based knowledge systems may offer valuable information for clinicians dealing with these pathologies.
METHODS: Urinary samples from 407 in- and out-patients with nephrological or urological pathology were retrospectively included in our study. Test strip analysis (URISYS 2400), urinary flow cytometry (UF-100) and urinary protein analysis [albumin, total protein, alpha1-microglobulin (A1M), alpha2-macroglobulin (A2M)] were performed.
RESULTS: In discriminating upper and lower urinary tract infections, A1M and A1M/log(white blood cells) can be used, whereas pathological casts only give poor discrimination. The ratio A2M/log(red blood cells; RBC) allows differentiation between cystitis and pyelonephritis, while glomerular diseases can be recognised by the log(RBCxurinary total protein). Combining A2M and urinary albumin allows the determination of acute prostatitis.
CONCLUSIONS: Using combined parameters provided by various urinalysis techniques, ratios can be proposed with diagnostic value for classifying renal and urological conditions. Possible integration in computer-based knowledge systems may offer valuable information for clinicians dealing with these pathologies.