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掻くことはアレルギー性炎症を促進し,神経原性マスト細胞の活性化によって宿主防衛を促進する
Andrew W Liu1,2, Youran R Zhang1,2, Chien-Sin Chen1,2
1Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, USA.
まとめ
痛みの感知器やマスト細胞を活性化することで 皮膚炎を悪化させるだけでなく 細菌性皮膚感染症に対する 宿主の防御力を高めます この研究は,
科学分野:
- 免疫学
- 神経科学
- 皮膚科
背景:
- 皮膚炎では かゆみや掻き傷が顕著で 炎症を悪化させます
- 掻き傷による炎症のメカニズムとその効果はよくわかっていない.
研究 の 目的:
- 皮膚の炎症を悪化させるメカニズムの解明
- 病気と宿主の防御における 掻き傷の二重な役割を調査するためです
主な方法:
- FcεRIによるマスト細胞活性化のマウスモデルを使用した.
- 痛感受体,物質P,MrgprB2の作用を研究した.
- Staphylococcus aureus感染に対する 掻き傷の影響を評価した.
主要な成果:
- FcεRI依存モデルでは,皮膚の炎症に欠かせないものであった.
- 掻き傷による炎症は ノシセプター,物質P,MrgprB2に関わっています
- 炎症を助長し,S. aureusの感染に対する防御を強化しました.
結論:
- 掻き傷は神経受容体による神経炎症を活性化し アレルギー性皮膚疾患を悪化させます
- 掻き傷は 細菌感染から進化的に保護します
- 掻くことは 病理と宿主の防御の両方に 矛盾する役割があります
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