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  • Title: [Urine protein analysis with the sodium-dodecyl-sulfate-polyacrylamide gel-electrophoresis (SDS-PAGE) in healthy cats and cats with kidney diseases].
    Author: Meyer-Lindenberg A, Wohlsein P, Trautwein G, Nolte I.
    Journal: Zentralbl Veterinarmed A; 1997 Mar; 44(1):39-54. PubMed ID: 9123982.
    Abstract:
    In this investigation, the value of urine protein analysis by means of molecular-weight related sodium dodecyl-polyacryl gradient gel electrophoresis (SDS-PAGE) was examined with regard to its applicability and diagnostic significance in nephropathy in the cat. A total of 87 cats was included in the study, 30 of them that were clinically healthy served as the control group. The urine protein pattern of this group had, besides the band representing the market albumin, and additional broad band within the size of the marker transferrin. In some cases, weak bands were present within the range of the Tamm-Horsfall-protein and immunoglobulin G. Micromolecular protein bands were not demonstrable. The remaining 57 animals had a histologically proven nephropathy. Thirty-eight cats had elevated urea and/or creatinine values in the plasma (group 1), and 19 animals had values within the reference range (group 2). The urine protein pattern as evidenced by SDS-urine electrophoresis was altered in all cats with histologically proven nephropathy, and it is thus concluded that with this technique a nephropathy can be diagnosed very early and prior to changes of plasma urea and creatinine (group 2). Moreover, in most of the cases, the nephrological changes can be classified as glomerular or tubulo-interstitial (group 1 and group 2). However, it is not possible to draw exact conclusions concerning the underlying morphological changes, nor can the severity of the disease be correctly assessed.
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