抽出剤および浸出剤 (E&L) の静脈内TTC (TTCiv) の推定は,オープンソースPBPKモデルを使用して予測された血液濃度に基づく修正因子を適用することによって行う
Tae Hayashi1, Akira Kotaki1, Asako Fukushima1
1Chemicals Assessment and Research Center, Chemicals Evaluation and Research, Institute, Japan (CERI).
The Journal of toxicological sciences
|August 31, 2025
まとめ
この研究は,医薬品の抽出剤および浸出剤 (E&Ls) に対する静脈内曝露 (TTCiv) の毒理学的懸念基準を確立しています. TTCivは27μg/日/人であり,患者の安全のためにリスク管理を助けます.
科学分野:
- 医薬品科学
- 毒理学について
- リスク評価
背景:
- 包装から医薬品に流入する化学物質は,患者にとって危険です.
- 静脈内でのE&Lへの曝露は大きな懸念ですが,毒性データと許容される日用曝露 (PDE) 値は稀です.
- E&Lのリスクを管理するために,静脈経路被曝 (TTCiv) の毒理学的懸念の値の確立は極めて重要です.
研究 の 目的:
- 医薬品におけるE&Lのリスク管理のためのTTCivを確立する.
- 287 E&L の経口 PDE を導き,静脈内 PDE を推定する.
- 静脈内 E&L 曝露のための科学的に有効な TTCiv を提案する.
主な方法:
- 923のリストから287のE&Lの口頭PDEを導出しました.
- PBPKモデリング (ICE) を使用して,AUCとCmax比に基づいて静脈内PDEからPDEを推定するために,変形因子 (α) を計算した.
- HTTKモデルRMSEに基づいて,生物学的利用可能性のデータがないため,不確実性の調整因数3を適用した.
主要な成果:
- 287種類の化学物質に対する PDE の分布を分析した.
- Cmax比に基づいてTTCivを27μg/日/人とする.
- TTCを確立するための経路抽出方法を示した.
結論:
- 提案されている27μg/day/humanのTTCivは,静脈内E&L暴露に関連するリスクを管理するための基礎を提供します.
- 経路抽出方法は,毒性データがない他の不純物にも適用できます.
- この研究は,医薬品の不純物に対する科学的に有効なTTCの確立に貢献します.
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