Effect of Plasma Cluster Ions on Attenuating Chronic Allergic Rhinitis and Fatigue by Mite Allergen Reduction

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  • プラズマクラスターイオンのダニアレルゲン低減による通年性アレルギー性鼻炎と疲労に対する軽減効果
  • プラズマクラスターイオン ノ ダニアレルゲン テイゲン ニ ヨル ツウネン セイ アレルギーセイ ビエン ト ヒロウ ニ タイスル ケイゲン コウカ

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Abstract

Objective: Plasma cluster ions consist of positive and negative ions and are known to suppress the activity of total bacteria, mold fungi, viruses and allergens floating in the air. In terms of inactivating mite allergens, it was reported that plasma cluster ions suppressed the symptoms of atopic dermatitis in mice. In the present study we investigated the effect of plasma cluster ions on attenuating chronic allergic rhinitis and fatigue induced by mite allergens in humans.<br> Design: Sixteen subjects with specific immunoglobulin E (IgE) positive to Dermatophagoides pteronyssinus, who had symptoms of allergic rhinitis caused by house dust participated in a randomized double-blinded crossover trial. Subjects occupied a mite allergen challenge room and performed mental task for 4 hours with 25,000/cm3 plasma cluster ions or without plasma cluster ions and rested for 2 hours outside of the room. We measured mite allergens (Der p1) on the floor using plastic dishes (90 mm diameter) placed at 5 points in the room. We also investigated the symptoms of allergic rhinitis using the Japanese Allergic Rhinitis Standard QOL Questionnaire (JRQLQ) during the 4-hour load and 2-hour rest and performance by Uchida-Kraepelin psychodiagnostic test during the 4-hour load.<br> Result: Plasma cluster ions inactivated 80–90% of Der p1 and attenuated the symptoms of nasal congestion in JRQLQ. Moreover, plasma cluster ions inhibited fatigue-induced impaired performance in Uchida-Kraepelin psychodiagnostic test compared to the case without the ions.<br> Conclusion: Plasma cluster ions reduce mite allergens and are effective for attenuating chronic allergic rhinitis and fatigue.<br>

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