Escherichia coli endotoxin enhances acute renal failure in rats after thermal injury

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Published on: July 18, 2017

Hiroki Yamaguchi1, Toshiro Kita, Hiroaki Sato

  • 1Department of Forensic Medicine, School of Medicine, University of Occupational and Environmental Health, Yahata Nishi-ku, Kitakyushu 807-8555, Japan.

Burns : Journal of the International Society for Burn Injuries
|March 5, 2003
PubMed

Insights

Infant burned rats experienced renal failure due to severe intestinal damage and bacterial translocation. Endotoxin administration induced renal failure in adult burned rats, suggesting endotoxin’s role in post-burn kidney injury.

Area of Science:

  • Nephrology
  • Toxicology
  • Pediatric Research

Background:

  • Burn injury can lead to organ dysfunction, including kidney failure.
  • Infant physiology differs from adult physiology, potentially impacting burn injury outcomes.
  • Endotoxin, derived from bacterial cell walls, is a potent mediator of inflammation and organ damage.

Purpose of the Study:

  • To compare endotoxin-sensitive kidney function in infant versus adult burned rats.
  • To investigate the role of endotoxin in post-burn renal failure in adult rats.

Main Methods:

  • Comparison of renal function and histology in burned infant and adult rats.
  • Intestinal permeability assessment using horseradish peroxidase (HRP) tracer.
  • Induction of renal failure in adult burned rats using lipopolysaccharide (LPS) or carrageenan (CAR).

Main Results:

  • Infant burned rats exhibited renal failure with glomerular and tubular damage.
  • More severe intestinal barrier damage was observed in infant burned rats.
  • Endotoxin administration (LPS or CAR) induced renal failure in adult burned rats, regardless of burn status.

Conclusions:

  • Infant burned rats are more susceptible to endotoxin-induced renal failure.
  • Bacterial translocation and subsequent endotoxin release may contribute to post-burn renal failure.
  • Endotoxin plays a significant role in the development of renal failure following burn injury.

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