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Combining Peripheral Nerve Grafting and Matrix Modulation to Repair the Injured Rat Spinal Cord
Published on: November 20, 2009
Exogenous Hsp70 exerts neuroprotective effects in peripheral nerve rupture model
Svetlana V Demyanenko1, Yuliya N Kalyuzhnaya2, Stanislav S Bachurin3
1Laboratory «Molecular Neurobiology», Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia; Department of General and Clinical Biochemistry no. 2, Rostov State Medical University, Rostov-on-Don, Russia.
Exogenous heat shock protein 70 (Hsp70) administration aids peripheral nerve injury recovery. This molecular chaperone reduced cell death and improved nerve regeneration and function in a rat sciatic nerve injury model.
Area of Science:
- Neuroscience
- Molecular Biology
- Regenerative Medicine
Background:
- Heat shock protein 70 (Hsp70) is a key molecular chaperone maintaining cellular proteostasis.
- Exogenous Hsp70 administration demonstrates neuroprotective effects in various neurodegenerative disease models.
Purpose of the Study:
- To investigate the therapeutic potential of exogenous Hsp70 in peripheral nerve injury recovery.
- To evaluate Hsp70's effect on sciatic nerve transection in a rat model.
Main Methods:
- Recombinant Hsp70 was applied to a nerve conduit bridging transected sciatic nerves in rats.
- Hsp70 migration, retention, apoptosis, PINK1 levels, regeneration markers, and functional deficits were assessed.
Main Results:
- Administered recombinant Hsp70 migrated and persisted in spinal ganglia for at least three days.
- Hsp70 treatment reduced apoptosis in spinal ganglion cells post-injury.
- Increased PTEN-induced kinase 1 (PINK1) levels and enhanced nerve regeneration markers were observed.
- Functional deficits in rats treated with Hsp70 were significantly decreased compared to controls.
Conclusions:
- Exogenous Hsp70 promotes peripheral nerve regeneration and functional recovery after injury.
- Recombinant Hsp70 shows promise for accelerating neurotrauma patient recovery.
