Non-Thermal Plasma Accelerates Astrocyte Regrowth and Neurite Regeneration Following Physical Trauma In Vitro.

Area of Science:

• Biomedical Engineering
• Neuroscience
• Plasma Physics

Background:

• Non-thermal plasma (NTP) is an emerging technology with demonstrated regenerative capabilities in various tissues.
• Its specific effects on nervous system regeneration, particularly on neurons and astrocytes, remain largely unexplored.
• Understanding NTP's impact is crucial for developing novel therapeutic strategies for neurological injuries.

Purpose of the Study:

• To investigate the effects of nanosecond-pulsed dielectric barrier discharge plasma on neural regeneration in vitro.
• To determine optimal NTP treatment parameters for promoting neurite and astrocyte regrowth.
• To assess the impact of NTP on neuron-astrocyte interactions during regeneration.

Main Methods:

• Neural and astrocyte cultures were subjected to mechanical trauma in vitro.
• Non-thermal plasma was applied directly or in a non-contact co-culture setup.
• Varying NTP intensities (mJ) were tested to evaluate effects on cell regrowth and neurite regeneration.

Main Results:

• Specific NTP intensities (20-90 mJ) accelerated astrocyte regrowth and neurite regeneration.
• Lower intensities (≤20 mJ) were optimal for neuronal outgrowth, while higher intensities proved injurious.
• NTP applied to single cell types enhanced regeneration; combined treatment showed no significant improvement at 7 days.

Conclusions:

• Calibrated NTP treatment can stimulate physiological responses to promote neurite and astrocyte regrowth.
• NTP holds potential for accelerating nervous system regeneration by modulating cellular interactions.
• Further optimization of NTP parameters is essential for safe and effective therapeutic application.