An ovine model for studying the pathophysiology of septic acute kidney injury

Yugeesh R. Lankadeva, Junko Kosaka, Roger G. Evans, Clive N. May

Research output: Chapter in Book/Report/Conference proceedingChapter

7 Citations (Scopus)

Abstract

The development of acute kidney injury (AKI) is both a significant and independent prognostic factor of mortality in patients with sepsis, but its pathophysiology remains unclear. Herein, we describe an ovine model of sepsis evoked by the administration of live Escherichia coli in which there is hypotension, peripheral vasodilatation with a large increase in cardiac output; a similar hyperdynamic state to that commonly reported in humans. Interestingly, in this sheep model of sepsis, despite an increase in global kidney blood flow, there is a progressive reduction in renal function. Although renal hyperperfusion develops, renal tissue hypoxia due to redistribution of intrarenal blood flow may contribute to the pathogenesis of septic AKI. We have, therefore, developed a novel methodology to chronically implant combination probes to monitor intrarenal tissue perfusion and oxygen tension during the development of septic AKI in conscious sheep with hyperdynamic sepsis.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages207-218
Number of pages12
DOIs
Publication statusPublished - Jan 1 2018
Externally publishedYes

Publication series

NameMethods in Molecular Biology
Volume1717
ISSN (Print)1064-3745

Keywords

  • Acute kidney injury
  • Cardiac output
  • Hypotension
  • Hypoxia
  • Ischemia
  • Renal blood flow
  • Sepsis

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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  • Cite this

    Lankadeva, Y. R., Kosaka, J., Evans, R. G., & May, C. N. (2018). An ovine model for studying the pathophysiology of septic acute kidney injury. In Methods in Molecular Biology (pp. 207-218). (Methods in Molecular Biology; Vol. 1717). Humana Press Inc.. https://doi.org/10.1007/978-1-4939-7526-6_16