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Renal Ischaemia Reperfusion Injury: A Mouse Model of Injury and Regeneration
12:27

Renal Ischaemia Reperfusion Injury: A Mouse Model of Injury and Regeneration

Published on: June 7, 2014

Therapeutic targeting of classical and lectin pathways of complement protects from ischemia-reperfusion-induced renal

Giuseppe Castellano1, Rita Melchiorre, Antonia Loverre

  • 1Department of Emergency and Organ Transplantation, University of Bari, Policlinico, Piazza Giulio Cesare 11, Bari, Italy. g.castellano@nephro.uniba.it

The American Journal of Pathology
|February 13, 2010
PubMed

Insights

Kidney transplant ischemia-reperfusion injury involves complement pathways. Inhibiting classical and lectin pathways reduces damage and may prevent delayed graft function.

Area of Science:

  • Nephrology
  • Immunology
  • Transplantation

Background:

  • Ischemia-reperfusion injury (IRI) is a primary cause of delayed graft function in kidney transplantation.
  • The alternative complement pathway's role in IRI is known in rodents, but human and large animal data are limited.

Purpose of the Study:

  • To investigate the role of complement pathways in renal IRI using a swine model.
  • To evaluate the therapeutic potential of C1-inhibitor in mitigating IRI-induced kidney damage.

Main Methods:

  • A swine model of renal IRI was established.
  • Complement deposition (C4d/C1q, C4d/MLB, MBL/MASP-2) was assessed post-ischemia.
  • C1-inhibitor was administered to assess its effects on complement deposition, immune cell infiltration, tubular damage, and apoptosis.
  • Human kidney transplant biopsies with delayed graft function were analyzed for complement deposition.

Main Results:

  • Ischemia induced C4d/C1q, C4d/MLB, and MBL/MASP-2 deposition in swine kidneys.
  • C1-inhibitor treatment significantly reduced C4d and C5b-9 deposition, immune cell infiltration, tubular damage, and apoptosis.
  • Focal C4d deposition co-localized with C1q and MBL in human delayed graft function biopsies.

Conclusions:

  • The classical and lectin complement pathways are activated and play a pathogenic role in swine renal IRI.
  • C1-inhibitor effectively mitigates IRI-induced renal damage in a large animal model.
  • Inhibiting these complement pathways may offer a novel therapeutic strategy for preventing delayed graft function in kidney transplant recipients.

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