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Related Experiment Videos

Rat maze performance after resuscitation with cross-linked hemoglobin solution.

R J Przybelski1, G J Kant, M J Bounds

  • 1Department of Medical Neurosciences, Walter Reed Army Institute of Research, Washington, D.C.

The Journal of Laboratory and Clinical Medicine
|May 1, 1990
PubMed
Summary

Modified hemoglobin (HbXL) resuscitation fluid showed no neurotoxicity in rats after lethal hemorrhage. HbXL-treated rats maintained normal memory and learning, unlike Ringer's lactate, suggesting its safety as a potential resuscitation agent.

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Area of Science:

  • Biomedical Engineering
  • Toxicology
  • Emergency Medicine

Background:

  • Unmodified hemoglobin causes neurotoxicity.
  • Modified hemoglobin (HbXL) showed promise in prior assessments.
  • Need to evaluate HbXL's neurobehavioral toxicity under clinical conditions.

Purpose of the Study:

  • To assess the neurobehavioral toxicity of a 14% HbXL solution as a resuscitation fluid in a rat model of lethal hemorrhage.

Main Methods:

  • Rats underwent a lethal hemorrhage (50% blood volume withdrawal).
  • Resuscitation was performed with 14% HbXL, Ringer's lactate, or autologous blood.
  • Neurobehavioral function was assessed using a water alley maze before and after resuscitation.

Main Results:

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  • HbXL and autologous blood resuscitation led to survival, while Ringer's lactate had a 20% mortality rate.
  • No significant performance decline in the water maze was observed in HbXL-treated rats.
  • No brain pathology was found in HbXL rats; Ringer's lactate group showed ischemic brain lesions.

Conclusions:

  • Resuscitation with 14% HbXL solution does not induce neurotoxicity in a lethal hemorrhage model.
  • HbXL demonstrates favorable survival and neurobehavioral outcomes compared to Ringer's lactate.
  • HbXL is a potential safe and effective resuscitation fluid.