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J Vet Med Sci ; 77(8): 937-43, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25819688

RESUMO

Feline renal diseases are increasingly noted in veterinary practice. It is important to diagnose and identify the pathological basis of renal dysfunction accurately at an early stage, but there are only a few reports on this area in clinical veterinary medicine. We investigated the efficacy of measurement of urinary albumin (u-Alb) and urinary transferrin (u-Tf) for early diagnosis using 5-µl urine samples collected noninvasively by catheterization from normal (IRIS stage I) cats and cats with stage I chronic kidney disease (CKD). The u-Alb levels in normal and stage I CKD cats were 6.0 ± 4.5 and 11.2 ± 8.4 mg/dl, respectively, and the u-Tf levels were 0.09 ± 0.42 and 0.52 ± 0.79 mg/dl, respectively. Based on ROC curve analysis, the sensitivity and specificity of u-Alb and u-Tf were higher than those of the currently used biomarker, the plasma creatinine level. The sensitivity of u-Alb was higher than that of u-Tf, whereas the specificity of u-Tf was higher than that of u-Alb. The validity of the threshold albumin level (20 mg/dl) was confirmed by measurements using SDS-PAGE. Since leakage of u-Tf in urine precedes leakage of u-Alb, inclusion of u-Tf in biochemistry tests may be appropriate for IRIS staging as a diagnostic marker of early diagnosis of renal disorder in cats.


Assuntos
Albuminúria/veterinária , Doenças do Gato/diagnóstico , Insuficiência Renal Crônica/veterinária , Transferrina/urina , Animais , Doenças do Gato/urina , Gatos/urina , Eletroforese em Gel de Poliacrilamida/veterinária , Feminino , Masculino , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/urina
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