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A persistent hindlimb ischemia model in the rabbit

L Q Pu1, S Jackson, K J Lachapelle

  • 1Department of Nuclear Medicine, Royal Victoria Hospital, McGill University, Montreal, Quebec, Canada.

Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research
|January 1, 1994
PubMed
Summary

Researchers developed a new rabbit model for persistent hindlimb ischemia, crucial for testing treatments for limb-threatening conditions. This model effectively simulates chronic limb ischemia, aiding therapeutic development.

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Area of Science:

  • Vascular Surgery
  • Animal Models
  • Ischemia Research

Background:

  • Developing effective treatments for limb-threatening ischemia requires a reliable animal model.
  • Previous models have limitations in replicating persistent limb ischemia.

Purpose of the Study:

  • To develop and evaluate a new animal model for persistent hindlimb ischemia in rabbits.
  • To assess the model's suitability for studying chronic limb ischemia and potential treatments.

Main Methods:

  • Inducing ischemia in rabbits by ligating the distal external iliac artery and excising femoral arteries.
  • Evaluating ischemia severity via angiography, blood flow, lactic acid levels, blood pressure, and histology up to 90 days.
  • Monitoring for complications such as tissue necrosis and mortality.

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Main Results:

  • The model successfully induced persistent hindlimb ischemia with minimal collateralization and reduced blood flow.
  • Significant decreases in calf blood flow and pressure ratios, and increased femoral venous lactic acid were observed.
  • Histological analysis revealed muscle atrophy and fibrosis, confirming ischemic damage.

Conclusions:

  • This rabbit model of persistent hindlimb ischemia is a viable tool for evaluating therapeutic strategies.
  • The model accurately reflects the physiological and histological changes associated with chronic limb ischemia.
  • It provides a platform for testing both direct and indirect treatment approaches for limb ischemia.