Lafitte D, Dussol B, Andersen S, Vazi A, Dupuy P, Jensen ON, Berland Y, Verdier JM. Optimized preparation of urine samples for two-dimensional electrophoresis and initial application to patient samples.
Clin Biochem 2002;
35:581-9. [PMID:
12498991 DOI:
10.1016/s0009-9120(02)00362-4]
[Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE
We optimized of the preparation of urinary samples to obtain a comprehensive map of urinary proteins of healthy subjects and then compared this map with the ones obtained with patient samples to show that the pattern was specific of their kidney disease.
DESIGN AND METHODS
The urinary protein excretion patterns of 49 healthy men and 4 patients with renal disease were obtained by 2D electrophoresis. Silver nitrate stained protein spots were identified by mass spectrometry.
RESULTS
Reproductive 2D gels identified 5 classes of proteins systematically found in healthy subjects, irrespective of age. The proteins evidenced included serum albumin and its specific proteolytic products, Tamm-Horsfall, transferrin, zinc-alpha2-glycoprotein, alpha1-microglobulin, haptoglobin, and Ig light chains.
CONCLUSIONS
This study of a large panel of healthy individual showed that 2D urinary pattern was constant over time and reveal for the first time the relative abundance of albumin fragments in healthy subjects' urine. The profiles of the 4 patients, were specific of their renal disease.
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