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Published on: July 8, 2015
Plasma-activated medium triggers immunomodulation and autophagic activity for periodontal regeneration
Shengfang Wang1,2, Peiyu Wang3,4,5, Rik Thompson3,4
1Centre for Biomedical Technologies Queensland University of Technology Brisbane Queensland Australia.
Abstract:
Periodontitis is an infection-induced inflammation, evidenced by an increase in inflammatory macrophage infiltration. Recent research has highlighted the role of plasma-activated medium (PAM) as a regulator of the innate immune system, where macrophages are the main effector cells. This study therefore aims to investigate the immunomodulatory effects of PAM on macrophages and its potential applications for periodontitis management. PAM was generated using an argon jet and applied to culture macrophages. Proinflammatory macrophage markers were significantly reduced after PAM stimulation, and this was correlated with the activation of autophagy via the Akt signaling pathway. Further investigations on the proregenerative effects of PAM-treated macrophages on periodontal ligament cells (PDLCs) revealed a significant increase in the expression of osteogeneis/cementogenesis-associated markers as well as mineralization nodule formation. Our findings suggest that PAM is an excellent candidate for periodontal therapeutic applications.
Insights
Plasma-activated medium (PAM) reduces inflammation in periodontitis by modulating macrophages. PAM also promotes tissue regeneration, suggesting its potential as a novel therapeutic for periodontal disease.
Area of Science:
- Biomedical Engineering
- Immunology
- Periodontology
Background:
- Periodontitis is characterized by inflammation and increased inflammatory macrophage infiltration.
- Plasma-activated medium (PAM) is recognized for its role in regulating innate immunity, particularly macrophage function.
Purpose of the Study:
- To investigate the immunomodulatory effects of PAM on macrophages.
- To explore the potential of PAM in managing periodontitis.
Main Methods:
- PAM was generated using an argon jet and applied to cultured macrophages.
- Macrophage markers, Akt signaling pathway, autophagy, and proregenerative effects on periodontal ligament cells (PDLCs) were analyzed.
Main Results:
- PAM stimulation significantly reduced proinflammatory macrophage markers.
- PAM activated autophagy via the Akt signaling pathway.
- PAM-treated macrophages enhanced osteogenesis/cementogenesis markers and mineralization in PDLCs.
Conclusions:
- PAM exhibits significant immunomodulatory and proregenerative effects.
- PAM demonstrates potential as a therapeutic agent for periodontitis.
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