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Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents
Published on: June 2, 2015
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Exploring Spinal Cord Protection by Remote Ischemic Preconditioning: An Experimental Study.
Johanna Herajärvi1, Tuomas Anttila1, Henna Sarja1
1Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu and Medical Research Center, Oulu, Finland.
The Annals of Thoracic Surgery
|September 27, 2016
Summary
Remote ischemic preconditioning (RIPC) improved spinal cord function and reduced paraplegia risk in pigs undergoing aortic aneurysm repair. RIPC enhanced neuroprotection against ischemia by increasing antioxidant responses.
Area of Science:
- Cardiovascular Surgery
- Neurology
- Ischemic Preconditioning
Background:
- Paraplegia is a severe complication following thoracic and thoracoabdominal aortic aneurysm repair.
- Remote ischemic preconditioning (RIPC) shows potential in mitigating neurologic damage.
Purpose of the Study:
- To assess the efficacy of RIPC in preventing spinal cord ischemia during aortic aneurysm repair.
- To investigate RIPC's neuroprotective effects on the spinal cord.
Main Methods:
- 16 female pigs were randomized into RIPC and control groups.
- RIPC involved four cycles of 5-minute ischemia-reperfusion via iliac artery occlusion.
- Spinal cord function was monitored using motor-evoked potentials; histologic analysis was performed.
Main Results:
- RIPC group showed higher motor-evoked potential amplitudes compared to controls.
- One control animal developed paraplegia, while none in the RIPC group did.
- RIPC group exhibited significantly higher nuclear factor erythroid 2-related factor 2 scores, indicating enhanced antioxidant response.
Conclusions:
- RIPC induces electrophysiologic changes that may protect the spinal cord against ischemia.
- Enhanced nuclear factor erythroid 2-related factor 2 scores suggest improved neuronal protection against oxidative stress.
