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    Relationship between urinary Tamm-Horsfall protein excretion and renal function in dogs with naturally occurring renal disease (2014)

    Art
    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Autoren
    Raila, Jens
    Schweigert, Florian J
    Kohn, Barbara (WE 20)
    Quelle
    Veterinary clinical pathology; 43(2) — S. 261–265
    ISSN: 0275-6382
    Sprache
    Englisch
    Verweise
    DOI: 10.1111/vcp.12143
    Pubmed: 24894070
    Kontakt
    Klinik für kleine Haustiere

    Oertzenweg 19 b
    Haus 1
    14163 Berlin
    +49 30 838 62356
    kleintierklinik@vetmed.fu-berlin.de

    Abstract / Zusammenfassung

    Tamm-Horsfall protein (THP) is physiologically excreted in urine, but little is known about the role of THP in the diagnosis of renal disease in dogs.

    The aim of this study was to evaluate to which extent naturally occurring renal disease affects the urinary excretion of THP.

    Dogs were divided into 5 groups according to plasma creatinine concentration, urinary protein-to-creatinine ratio (UP/UC), and exogenous plasma creatinine clearance (P-ClCr ) rates: Group A (healthy control dogs; n = 8), nonazotemic and nonproteinuric dogs, with P-ClCr rates > 90 mL/min/m(2) ; group B (n = 25), nonazotemic and nonproteinuric dogs with reduced P-ClCr rates (51-89 mL/min/m(2) ); group C (n = 7), nonazotemic but proteinuric dogs with P-ClCr rates 53-98 mL/min/m(2) ; group D (n = 8), azotemic and borderline proteinuric dogs (P-ClCr rates: 22-45 mL/min/m(2) ); and group E (n = 15), azotemic and proteinuric dogs (not tested for P-ClCr ). THP was measured by quantitative Western blot analysis, and the ratio of THP-to-urinary creatinine (THP/UC) was calculated.

    The THP/UC concentrations were not different among dogs of groups A-D, but were reduced in dogs of group E (P < .001). THP/UC correlated negatively with serum creatinine (P < .01) and UP/UC (P < .01), but was not significantly associated with P-ClCr .

    Decreased levels of THP/UC were present in moderately to severely azotemic and proteinuric dogs. This suggests tubular injury in these dogs and that THP might be useful as urinary marker to study the pathogenesis of renal disease.