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Related Experiment Video

Updated: Apr 17, 2026

Organ Ischemia-Reperfusion Injury by Simulating Hemodynamic Changes in Rat Liver Transplant Model
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Nitrite, a novel method to decrease ischemia/reperfusion injury in the rat liver.

Bergthor Björnsson1, Linda Bojmar1, Hans Olsson1

  • 1Bergthor Björnsson, Per Sandström, Department of Surgery, County Council of Östergötland, 581 85 Linköping, Sweden.

World Journal of Gastroenterology
|February 17, 2015
PubMed
Summary
This summary is machine-generated.

Pre-treatment with nitrite significantly reduced liver injury in rats subjected to ischemia/reperfusion (I/R). Nitrite administration lowered serum transaminases, decreased anaerobic metabolism, and prevented cell necrosis, suggesting clinical relevance.

Keywords:
Inducible nitric oxide synthaseIschemia-reperfusion injuryLiver ischemiaLiver surgeryMicrodialysisNitric oxideNitrite

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Area of Science:

  • Hepatology
  • Ischemia-Reperfusion Injury
  • Nitrite Therapy

Background:

  • Ischemia/reperfusion (I/R) injury is a significant clinical challenge, particularly in liver transplantation and surgery.
  • Current therapeutic strategies for I/R injury are limited, necessitating novel approaches.

Purpose of the Study:

  • To evaluate the protective effect of nitrite administration prior to liver I/R injury in a rat model.
  • To investigate the impact of nitrite on metabolic changes and histological damage during I/R.

Main Methods:

  • Male Sprague-Dawley rats underwent sham operation, ischemia/reperfusion (IR), or IR with prior nitrite administration.
  • Serum transaminases (AST, ALT) were measured post-reperfusion.
  • Liver microdialysate was analyzed for glucose, lactate, pyruvate, glycerol, and NOx levels.
  • Histological examination assessed liver tissue damage and necrosis.

Main Results:

  • Nitrite pre-treatment significantly reduced serum AST and ALT levels compared to the IR group.
  • Lactate and glycerol levels were significantly lower in the nitrite group during ischemia and early reperfusion.
  • Histological analysis revealed less tissue damage and no necrosis in the nitrite group, versus 29% necrosis in the IR group.
  • Nitrite administration increased NOx levels in liver microdialysate.

Conclusions:

  • Nitrite administration prior to liver ischemia in rats mitigates I/R-induced liver injury.
  • Nitrite reduces anaerobic metabolism and prevents hepatocellular necrosis.
  • These findings suggest a potential therapeutic role for nitrite in clinical settings involving liver I/R.