Pediatric Nephrology

, Volume 23, Issue 4, pp 559–567

Development of an experimental hemolytic uremic syndrome in rats

  • Elsa Zotta
  • Nestor Lago
  • Federico Ochoa
  • Horacio A. Repetto
  • Cristina Ibarra
Original Article

DOI: 10.1007/s00467-007-0727-4

Cite this article as:
Zotta, E., Lago, N., Ochoa, F. et al. Pediatr Nephrol (2008) 23: 559. doi:10.1007/s00467-007-0727-4

Abstract

Escherichia coli strains producing Shiga toxins (Stxs) colonize the lower gastrointestinal tract and cause watery diarrhea, hemorrhagic colitis, and hemolytic-uremic syndrome (HUS). HUS is characterized by hemolytic anemia, thrombocytopenia, and acute renal failure. Oliguria associated with acute tubular necrosis and microangiopathic thrombosis has been reported as the most common cause of renal failure in Argentinean children. Our study was undertaken to obtain a model of HUS in rats that was similar to the clinical and renal histopathology findings described in humans. Rats were intraperitoneally inoculated with culture supernatant from recombinant E. coli expressing Stx2. Glomerular filtrate volume evaluated from clearance of creatinine resulted in a progressive reduction (from 53% at 24 h to 90% at 48 h). Urine volume increased significantly at 24 h but returned to normal levels at 48 h. Evidence of thrombocytopenia, anemia and leukocytosis was documented. Macroscopic analysis revealed a hyperemic peritoneal face with intestinal water accumulation. The kidneys were friable and congestive. Histopathological analysis showed glomerular and tubular necrosis as well as microangiopathic thrombosis. Our findings indicated vascular damage and kidney lesions similar to those described in humans with HUS.

Keywords

Hemolytic uremic syndrome Acute tubular necrosis Thrombotic microangiopathy Shiga toxin Diarrhea 

Copyright information

© IPNA 2008

Authors and Affiliations

  • Elsa Zotta
    • 1
  • Nestor Lago
    • 2
  • Federico Ochoa
    • 1
  • Horacio A. Repetto
    • 3
  • Cristina Ibarra
    • 1
    • 4
  1. 1.Laboratorio de Fisiopatogenia, Depto de Fisiología, Facultad de MedicinaUniversidad de Buenos AiresBuenos AiresArgentina
  2. 2.Laboratorio de Patología Experimental, Depto de Patología, Facultad de MedicinaUniversidad de Buenos AiresBuenos AiresArgentina
  3. 3.Servicio de Pediatría, Hospital Nacional Prof. Alejandro PosadasBuenos AiresArgentina
  4. 4.Depto de Fisiología, Facultad de MedicinaBuenos AiresArgentina

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