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Lavoué R, Trumel C, Smets PMY, Braun JP, Aresu L, Daminet S, Concordet D, Palanché F, Peeters D. Characterization of Proteinuria in Dogue de Bordeaux Dogs, a Breed Predisposed to a Familial Glomerulonephropathy: A Retrospective Study. PLoS One 2015; 10:e0133311. [PMID: 26181659 PMCID: PMC4504498 DOI: 10.1371/journal.pone.0133311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 06/24/2015] [Indexed: 01/06/2023] Open
Abstract
Dogue de Bordeaux dog has been reported to be predisposed to a familial glomerulonephropathy that displays some morphological modifications reported in focal and segmental glomerulosclerosis. Prevalence of quantitatively abnormal renal proteinuria was recently reported to be 33% in this breed. The nature of the proteinuria was assessed by sodium dodecyl sulfate-agarose gel electrophoresis and determinations of urinary markers (urinary retinol-binding protein, urinary N-acetyl-β-glucosaminidase, urinary albumin and urinary immunoglobulin G) on stored specimens. Diagnostic performances of sodium dodecyl sulfate-agarose gel electrophoresis to identify dogs with elevated urinary biomarkers were assessed. Samples from 102 adult Dogue de Bordeaux dogs (47 non-proteinuric [urine protein-to-creatinine ratio ≤ 0.2], 20 borderline-proteinuric [0.2< urine protein-to-creatinine ratio ≤ 0.5] and 35 proteinuric dogs [urine protein-to-creatinine ratio >0.5]) were used, of which 2 were suffering from familial glomerulonephropathy. The electrophoretic protein patterns, for all but one proteinuric dog, were indicative of a glomerular origin and, in all dogs, the urinary albumin concentration related to creatinine concentration and the urinary immunoglobulin G concentration related to creatinine concentration were above the upper limit of the reference interval established for the breed. Sensitivity and specificity of sodium dodecyl sulfate-agarose gel electrophoresis identifying dogs with elevated urinary albumin concentration were 94% and 92%, respectively, while diagnostic performance of sodium dodecyl sulfate-agarose gel electrophoresis in detecting dogs with elevated urinary immunoglobulin G concentration yielded sensitivity and specificity of 90% and 74%, respectively. These results suggest that all proteinuric and some borderline-proteinuric Dogue de Bordeaux dogs likely have underlying glomerular lesions and that sodium dodecyl sulfate-agarose gel electrophoresis and urinary markers might be useful to screen dogs with borderline-proteinuria. Additional investigations are warranted to assess if these findings are related to the familial glomerulonephropathy.
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Affiliation(s)
- Rachel Lavoué
- Internal Medicine Unit, Institut National Polytechnique, Ecole Nationale Vétérinaire de Toulouse (INP-ENVT), Toulouse, France
- * E-mail:
| | - Catherine Trumel
- Université de Toulouse, UPS, INP, ENVT, UMS006, Laboratoire Central de Biologie Médicale, Toulouse, France
- INSERM, UMS 006, Laboratoire Central de Biologie Médicale, Toulouse, France
| | - Pascale M. Y. Smets
- Department of Medicine and Clinical Biology of Small Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Jean-Pierre Braun
- Université de Toulouse, UPS, INP, ENVT, UMS006, Laboratoire Central de Biologie Médicale, Toulouse, France
- INSERM, UMS 006, Laboratoire Central de Biologie Médicale, Toulouse, France
| | - Luca Aresu
- Department of Comparative Biomedicine and Food Science, University of Padova, Padova, Italy
| | - Sylvie Daminet
- Department of Medicine and Clinical Biology of Small Animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Didier Concordet
- UMR 1331 Toxalim, INRA, Institut National Polytechnique, Ecole Nationale Vétérinaire de Toulouse (INP-ENVT), Toulouse, France
| | - Florence Palanché
- Université de Toulouse, UPS, INP, ENVT, UMS006, Laboratoire Central de Biologie Médicale, Toulouse, France
| | - Dominique Peeters
- Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
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