健康な女性における高周波電気刺激による痛みと針刺しの過敏に対する急性ストレスの影響
Emanuel N van den Broeke1,2, Lissa Deckers1, Ziza De Meutter1
1Research Group Health Psychology, Faculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium.
Pain
|September 2, 2025
まとめ
高周波電気刺激 (HFS) の前の急性ストレスは痛みを増加させるかもしれないが,過敏度は増加しない. しかし,HFS後のストレスは,女性における既知の針刺し過敏症を悪化させる可能性があります.
科学分野:
- 神経科学
- 痛みの研究
- 精神生理学
背景:
- 皮膚経由の高周波電気刺激 (HFS) は痛みを誘発し,長期にわたる機械的針刺し過敏症を引き起こすことが知られている.
- HFS後の痛みの知覚と過敏性の発達に対する急性ストレスの影響については,さらなる調査が必要である.
研究 の 目的:
- マンハイム・マルチコンポーネント・ストレス・テスト (MMST) によって誘発される急性ストレスが,健康な女性におけるHFS誘発の痛みおよびその後の針刺し過敏性を変化させるかどうかを判断する.
- HFSの適用前と後の痛みと過敏に対するストレスの時間的影響を調べる.
主な方法:
- 健康な女性を対象に2つの実験が行われました.
- 実験1: HFSの前に施されたMMSTまたはコントロールタスクで,痛みと過敏性の発達に対するストレス効果を評価する.
- 実験2:MMSTまたはコントロールタスクは,HFSの後,確立された過敏性に対するストレス効果を評価するために投与される.
主要な成果:
- MMSTは両方の実験でコントロールタスクと比較して主観的なストレスを著しく増加させた.
- 実験1では,HFS前のストレスが全体的な痛みの評価や過敏性の発達に有意な影響を及ぼさなかったが,最初の痛みの知覚は高かった.
- 実験2では,HFS後のストレスは,小規模な効果であっても,既定の針刺し過敏性を有意に増加させた.
結論:
- HFSに先立つ急性ストレスは一時的に痛みの知覚を高めますが,その後の機械的針刺し過敏症の発生には影響しません.
- 針刺し過敏症が発症した後の急性ストレスは,健康な女性においてこの過敏症を悪化させる可能性があります.
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