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Updated: Sep 9, 2025

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Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
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ベタラクタム抗生物質に対する非即時のアレルギー反応が確認された子供は,長期間薬剤を避けた後,耐性を発症することがあります
Isabel Torres-Rojas1, María Vázquez De La Torre2, Diana Pérez-Alzate2
1Allergy Service, Infanta Sofía University Hospital, Madrid, Spain.
まとめ
ベタラクタム抗生物質に対する非即時反応 (NIR) の子どもは,時間の経過とともにアレルギーを失います. この研究では,アモキシシリンまたはアモキシシリン/クラヴルナートに対するNIRを持つ子供の半分は,再暴露時に耐性を発達させた.
科学分野:
- 免疫学
- 小児アレルギー
- 薬理学について
背景:
- ベタラクタム抗生物質 (βLs) に対するアレルギー反応は,時間とともに解消する可能性があるが,非即時反応 (NIRs) に関する証拠は,特に子供では限られている.
- ほとんどの以前の研究は,小児集団におけるT細胞媒介のβLアレルギーの自然な経歴を理解するためのギャップを残し,即時の反応 (IRs) に焦点を当てていた.
研究 の 目的:
- ベータラクトーム (βL) アレルギーの疑いの解消を評価し,非即時反応 (NIR) に焦点を当てます.
- 追跡薬剤誘発試験 (DPT) を通じて,以前にNIRが確認された子供におけるアモキシチリンおよびアモキシチリン/クラヴルナートに対する耐性の発達を評価する.
主な方法:
- 小児患者のβLに対するアレルギー反応 (IRとNIR) の診断と評価のために,薬物誘発試験 (DPT) を利用した.
- アモキシチリンまたはアモキシチリン/クラヴルナートに対するNIRが確認された子供に対する5年間のフォローアップDPTを実施し,感受性の低下を評価した.
- 反応の発症年齢,性別,アトピー状態を分析し,再挑戦時に薬に耐えた子供とアレルギーを残した子供とを比較した.
主要な成果:
- 評価された665人の子供のうち80人 (12%) がアレルギーを確認し,主にNIR (54%) がIR (32%) よりも多かった.
- フォローアップ研究では,アモキシチリンまたはアモキシチリン/クラヴルナートに対する以前のNIRを有する子供の50%が,DPTを繰り返した際に耐性を示した.
- 耐性に達した子供は,反応性が残った子供よりもかなり若く,その後の小児科医の指導の下で抗生物質に無事曝露したと報告した.
結論:
- ベータ・ラクタム抗生物質に対するT細胞媒介の免疫反応は,子供では時間とともに弱まる可能性があります.
- アモキシシリンまたはアモキシシリン/クラヴルナートに対する即時の反応を経験した小児の患者は,耐性を発症する可能性があり,一部の患者には好ましい予後が示唆されています.
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