Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease

Abstract Background Borderline proteinuria is associated with decreased survival in cats with azotemic chronic kidney disease (CKD). Objectives Determine the clinical importance of borderline proteinuria in nonazotemic cats. Animals A total of 201 healthy client‐owned cats ≥7 years of age; 150 nonpr...

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Main Authors: Femke Mortier, Sylvie Daminet, Sofie Marynissen, Joren Verbeke, Dominique Paepe
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Journal of Veterinary Internal Medicine
Subjects:
Online Access:https://doi.org/10.1111/jvim.17257
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author Femke Mortier
Sylvie Daminet
Sofie Marynissen
Joren Verbeke
Dominique Paepe
author_facet Femke Mortier
Sylvie Daminet
Sofie Marynissen
Joren Verbeke
Dominique Paepe
author_sort Femke Mortier
collection DOAJ
description Abstract Background Borderline proteinuria is associated with decreased survival in cats with azotemic chronic kidney disease (CKD). Objectives Determine the clinical importance of borderline proteinuria in nonazotemic cats. Animals A total of 201 healthy client‐owned cats ≥7 years of age; 150 nonproteinuric (urinary protein : creatinine ratio [UPC] <0.2) and 51 borderline proteinuric (UPC 0.2‐0.4). Methods Prospective study. Cats were thoroughly screened and subsequently examined every 6 months for 2 years. Kaplan‐Meier curves were compared between nonproteinuric and borderline proteinuric cats. Univariable and multivariable Cox models were fit to determine the relationship between development of renal disease and potential risk factors such as age, sex, breed, weight, dental disease, blood pressure, serum creatinine concentration (sCrea), serum symmetric dimethylarginine concentration (sSDMA), blood urea nitrogen concentration, urine specific gravity (USG), and UPC. Results Significantly more cats with borderline proteinuria at inclusion developed renal disease (International Renal Interest Society [IRIS] ≥ stage 2 CKD or renal proteinuria; log‐rank P = .004) or died (log‐rank P = .02) within 2 years, compared with nonproteinuric cats. In the multivariate analysis, IRIS stage 1 CKD (persistent USG <1.035 or sSDMA >14 μg/dL; hazard ratio [HR], 4.2; 95% confidence interval [CI], 2.0‐8.8; P < .001), sCrea ≥1.6 mg/dL (≥140 μmol/L; HR, 2.6; 95% CI, 1.1‐6.4; P = .04), borderline proteinuria (HR, 2.5; 95% CI, 1.2‐5.2; P = .01), and age at inclusion (HR, 1.3; 95% CI, 1.2‐1.5; P < .001) were significantly associated with diagnosis of renal disease 6 months later. Conclusions and Clinical Importance Borderline proteinuria should receive more attention in healthy mature adult and senior cats because it is associated with renal disease and death.
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spelling doaj-art-3fe6680b2d4749d6a0eff99a1790ba4f2025-01-27T15:22:41ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762025-01-01391n/an/a10.1111/jvim.17257Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney diseaseFemke Mortier0Sylvie Daminet1Sofie Marynissen2Joren Verbeke3Dominique Paepe4Small Animal Department Ghent University Merelbeke BelgiumSmall Animal Department Ghent University Merelbeke BelgiumSmall Animal Department Ghent University Merelbeke BelgiumStatsom Bruges BelgiumSmall Animal Department Ghent University Merelbeke BelgiumAbstract Background Borderline proteinuria is associated with decreased survival in cats with azotemic chronic kidney disease (CKD). Objectives Determine the clinical importance of borderline proteinuria in nonazotemic cats. Animals A total of 201 healthy client‐owned cats ≥7 years of age; 150 nonproteinuric (urinary protein : creatinine ratio [UPC] <0.2) and 51 borderline proteinuric (UPC 0.2‐0.4). Methods Prospective study. Cats were thoroughly screened and subsequently examined every 6 months for 2 years. Kaplan‐Meier curves were compared between nonproteinuric and borderline proteinuric cats. Univariable and multivariable Cox models were fit to determine the relationship between development of renal disease and potential risk factors such as age, sex, breed, weight, dental disease, blood pressure, serum creatinine concentration (sCrea), serum symmetric dimethylarginine concentration (sSDMA), blood urea nitrogen concentration, urine specific gravity (USG), and UPC. Results Significantly more cats with borderline proteinuria at inclusion developed renal disease (International Renal Interest Society [IRIS] ≥ stage 2 CKD or renal proteinuria; log‐rank P = .004) or died (log‐rank P = .02) within 2 years, compared with nonproteinuric cats. In the multivariate analysis, IRIS stage 1 CKD (persistent USG <1.035 or sSDMA >14 μg/dL; hazard ratio [HR], 4.2; 95% confidence interval [CI], 2.0‐8.8; P < .001), sCrea ≥1.6 mg/dL (≥140 μmol/L; HR, 2.6; 95% CI, 1.1‐6.4; P = .04), borderline proteinuria (HR, 2.5; 95% CI, 1.2‐5.2; P = .01), and age at inclusion (HR, 1.3; 95% CI, 1.2‐1.5; P < .001) were significantly associated with diagnosis of renal disease 6 months later. Conclusions and Clinical Importance Borderline proteinuria should receive more attention in healthy mature adult and senior cats because it is associated with renal disease and death.https://doi.org/10.1111/jvim.17257felinegeriatricmiddle‐agedpredictorsrenalurinary protein : creatinine ratio
spellingShingle Femke Mortier
Sylvie Daminet
Sofie Marynissen
Joren Verbeke
Dominique Paepe
Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
Journal of Veterinary Internal Medicine
feline
geriatric
middle‐aged
predictors
renal
urinary protein : creatinine ratio
title Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
title_full Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
title_fullStr Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
title_full_unstemmed Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
title_short Clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
title_sort clinical importance of borderline proteinuria in nonazotemic cats and evaluation of other risk factors for the development of chronic kidney disease
topic feline
geriatric
middle‐aged
predictors
renal
urinary protein : creatinine ratio
url https://doi.org/10.1111/jvim.17257
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