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Updated: Jan 29, 2026

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再構成アザシチジン(AZA)の臨床保管条件下での定量的安定性評価
Stefano Ruga1, Renato Lombardi2, Tonia Bocci3
1Department of Health Sciences, University of Catanzaro Magna Græcia, 88100 Catanzaro, Italy.
Pharmaceuticals (Basel, Switzerland)
|January 28, 2026
まとめ
アザシチジン(AZA)は室温で不安定であり、24時間で85%以上分解する。4℃での冷蔵は分解を26%の損失に抑えるが、有効性と費用対効果のためには即時使用が依然として重要である。
科学分野:
- 薬科学
- 分析化学
- 臨床薬学
背景:
- アザシチジン(AZA)は重要な化学療法剤である。
- 臨床条件下でのAZA安定性の理解は、効果的な治療と廃棄物削減に不可欠である。
- 現在の保管および取り扱いプロトコルは、最適なAZA利用のために検証が必要である。
研究 の 目的:
- 標準的な臨床保管条件下でのアザシチジン(AZA)溶液の安定性を評価すること。
- 室温(23±2℃)と冷蔵(4℃)でのAZA安定性を比較すること。
- 薬剤の分解、廃棄物を最小限に抑え、費用対効果を改善するための実用的な保管プロトコルを情報提供すること。
主な方法:
- アザシチジン溶液(1 mg/mL)を調製し、23±2℃および4℃で保管した。
- 安定性は、UV検出付きのバリデートされた高速液体クロマトグラフィー(HPLC)法を用いて評価した。
- HPLC法では、C18カラムと、リン酸カリウム緩衝液およびアセトニトリルの移動相を使用し、AZAとその主な分解生成物に対する特異性を持たせた。
主要な成果:
- アザシチジンは室温で急速な分解を示し、24時間以内に85%以上が失われた。
- 4℃での冷蔵は安定性を著しく改善し、24時間で約26%の損失を示した。
- HPLC-UVで同定・モニタリングされた主な分解生成物は、開環加水分解種である可能性が高い。
結論:
- 再構成アザシチジン(AZA)は非常に不安定であり、即時使用プロトコルを厳守する必要がある。
- 4℃での冷蔵は安定性を限定的に延長するだけであり、短期間での投与が必要である。
- AZA分解に関連する治療効果の確保と経済的損失の最小化のためには、取り扱いガイドラインの遵守が不可欠である。
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