Human amniotic fluid mesenchymal stem cells in combination with hyperbaric oxygen augment peripheral nerve...

Area of Science:

• Regenerative Medicine
• Neuroscience
• Biomedical Engineering

Background:

• Human amniotic fluid stem cells (AFS) show potential in tissue repair.
• Inflammation and apoptosis can hinder stem cell efficacy.
• Hyperbaric oxygen (HBO) is known to modulate inflammatory responses.

Purpose of the Study:

• To investigate the therapeutic effect of hyperbaric oxygen (HBO) on transplanted human amniotic fluid stem cells (AFS) in a rat sciatic nerve injury model.
• To assess if HBO can mitigate apoptosis and inflammation associated with AFS transplantation.
• To evaluate the impact of combined AFS and HBO treatment on nerve regeneration and motor function.

Main Methods:

• Peripheral nerve injury was induced by sciatic nerve crush in Sprague-Dawley rats.
• AFS were transplanted to the injury site, with some groups receiving concurrent HBO treatment (100% oxygen, 2 ATA).
• Evaluations included cell apoptosis, oxidative stress, inflammatory markers, and motor function recovery at 7 and 28 days post-injury.

Main Results:

• HBO treatment significantly attenuated pro-inflammatory cytokines and macrophage migration chemokines in the injured sciatic nerve.
• Apoptosis of transplanted AFS was reduced by HBO.
• Combined AFS and HBO treatment demonstrated the most significant improvements in nerve myelination and motor function recovery compared to AFS-only or HBO-only groups.

Conclusions:

• The combination of AFS transplantation and HBO therapy significantly promotes peripheral nerve regeneration.
• This synergistic effect appears to be mediated by reduced apoptosis of implanted AFS and suppression of detrimental inflammatory responses.
• Combined AFS and HBO treatment offers a promising therapeutic strategy for sciatic nerve injury.