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An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation
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Rapid allergen inactivation using atmospheric pressure cold plasma.

Yan Wu1, Yongdong Liang, Kai Wei

  • 1State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University , Beijing 100871, China.

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Atmospheric pressure cold plasma (APCP) effectively inactivates airborne allergens, significantly reducing allergic reactions. This innovative technology shows promise for controlling global allergy issues.

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Area of Science:

  • Plasma Physics
  • Immunology
  • Environmental Science

Background:

  • Allergies represent a significant global health concern requiring effective control strategies.
  • Aerosolized allergens from various sources contribute to widespread allergic diseases.
  • Existing methods for allergen control may have limitations in efficacy or application.

Purpose of the Study:

  • To investigate the allergen inactivation effects of atmospheric pressure cold plasma (APCP).
  • To assess APCP's efficacy on diverse aerosolized allergens and environmental samples.
  • To evaluate the impact of APCP treatment on human IgE binding and allergen structure.

Main Methods:

  • Exposure of aerosolized allergens (Der p 1, Der f 1, Asp f 1, Alt a 1, Can f 1) to APCP.
  • Allergenicity testing using blood sera from allergen-sensitized humans.
  • Analysis of allergen structural changes using SDS-PAGE.
  • Identification of reactive species, such as hydroxyl radicals, generated by the plasma.

Main Results:

  • APCP demonstrated high effectiveness in reducing the allergenicity of both laboratory and environmental allergen aerosols.
  • Airborne allergen reduction ranged from 30% for Der p 1 to 80% for Can f 1 within 0.12s exposure.
  • APCP-treated Asp f 1 showed a 50% reduction in IgE binding compared to controls, attributed to hydroxyl radicals.
  • SDS-PAGE analysis indicated a decrease in the size of Asp f 1 post-plasma treatment.

Conclusions:

  • APCP is a highly effective method for inactivating a broad spectrum of aerosolized allergens.
  • The plasma-induced reduction in allergenicity is linked to the generation of hydroxyl radicals.
  • This technology offers a promising new approach for combating allergic diseases.