Utility of urinary markers in the assessment of renal dysfunction in canine babesiosis

Dagmara Winiarczyk; Łukasz Adaszek; Michał Bartnicki; Beata Abramowicz; Paweł Łyp; Jacek Madany; Stanisław Winiarczyk

doi:10.15654/TPK-160490

Tierärztliche Praxis Ausgabe K: Kleintiere / Heimtiere, Table of Contents

Tierarztl Prax Ausg K Kleintiere Heimtiere 2017; 45(02): 84-88
DOI: 10.15654/TPK-160490

Original Article

Schattauer GmbH

Utility of urinary markers in the assessment of renal dysfunction in canine babesiosis

Nützlichkeit von Urinmarkern zur Beurteilung von Nierenfunktionsstörungen bei Hunden mit Babesiose

Dagmara Winiarczyk

¹Department and Clinic of Animal Internal Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Łukasz Adaszek

²Department of Epizootiology and Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Michał Bartnicki

²Department of Epizootiology and Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Beata Abramowicz

¹Department and Clinic of Animal Internal Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Paweł Łyp

²Department of Epizootiology and Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Jacek Madany

¹Department and Clinic of Animal Internal Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

,

Stanisław Winiarczyk

²Department of Epizootiology and Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences Lublin, Lublin, Poland

› Author Affiliations

Abstract

Summary

Objective: Canine babesiosis is a common and clinically significant tick-borne disease caused by haemoprotozoan parasites of the genus Babesia. Acute renal failure is considered to be one of the most prevalent complications of canine babesiosis. This complication leads to a decrease in the glomerular filtration rate and in consequence causes azotemia and uremia. The objective of this study was to assess the localization and extent of renal damage in dogs infected with Babesia canis using an urinary marker for glomerular (urinary immunoglobulin G, uIgG), proximal tubular dysfunction (urinary retinol binding protein, uRBP) and distal tubular dysfunction (urinary Tamm-Horsfal protein, uTHP). Material und methods: In 10 dogs naturally infected with B. canis and 10 healthy control dogs the levels of urinary biomarkers were measured using commercially available ELISA tests. Results: Higher concentrations of uIgG, uRBP and uTHP were found in the urine of all dogs with babesiosis than in those from the control group. This indicates that in the course of the disease, the glomeruli as well as the renal tubules become damaged. Conclusion and clinical relevance: The study results allow a better understanding of the pathogenesis of canine babesiosis. However, in order to fully determine the extent and the nature of the damage to the kidneys of the infected dogs, it is advisable to conduct additional histopathological examinations of these organs.

Zusammenfassung

Gegenstand und Ziel: Die kanine Babesiose ist eine häufig vorkommende und klinisch bedeutsame Krankheit, die durch Zecken übertragen und durch Parasiten der Gattung Babesia hervorgerufen wird. Als eine der häufigsten Komplikationen tritt akutes Nierenversagen auf. Es führt zu einer Abnahme der glomerulären Filtrationsrate und zu Azotämie und Urämie. Ziel der Untersuchungen war, die Lokalisation und das Ausmaß der Nierenschädigung bei Hunden mit Babesiose zu beurteilen. Material und Methoden: Mittels kommerziell erhältlicher ELISA-Tests wurde die Konzentration von Urinmarkern bestimmt, die eine glomeruläre Dysfunktion (Immunglobulin G im Urin, uIgG), eine Dysfunktion im Bereich des proximalen Tubulus (Retinolbindungs protein im Urin, uRBP) bzw. distalen Tubulus (Tamm-Horsfal-Protein im Urin, uTHP) anzeigen. Ergebnisse: Bei allen Hunden mit Babesiose lagen die uRBP- und uTHP-Konzentrationen im Harn deutlich höher als bei den Kontrollhunden. Dies zeigt, dass im Verlauf der Erkrankung eine Schädigung der Glomeruli und der Nierentubuli stattfindet. Schlussfolgerung und klinische Relevanz: Die Ergebnisse der Studie ermöglichen ein besseres Verständnis der Pathogenese der kaninen Babesiose. Zur genaueren Bestimmung von Ausmaß und Art der Nierenschädigung ist jedoch eine histopathologische Untersuchung der Nieren zweckmäßig.

Keywords

Babesia canis - dogs - urinary immunoglobulin G - urinary retinol binding protein - urinary Tamm-Horsfal protein

Schlüsselwörter

Babesia canis - Hund - Immunglobulin G im Urin - Retinolbindungsprotein im Urin - Tamm-Horsfal-Protein im Urin

Full Text

References

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