脊髄外科手術後の痛みを和らげるために,ブピバカインを含むヒドロゲルの臨床前安全性および実行可能性
Jasper G Steverink1,2, Suzanne Bruins1, Floris R van Tol1,2
1SentryX B.V., Yalelaan 54, 3584CM, Utrecht, The Netherlands.
Scientific reports
|September 2, 2025
まとめ
脊髄外科手術中に併用された新しいブピバカイン含有ヒドロゲルは 持続的な痛みを和らげます この局所投与法では,薬剤の放出が長くなり,従来の方法と比較して全身曝露が減少した.
科学分野:
- バイオマテリアル科学
- 外科 革新
- 薬理学について
背景:
- 手術後の痛みと鎮痛剤の副作用は 脊椎手術後の回復を妨げます
- 現存する局域ブロックと持続放出剤は,迅速な全身吸収により課題に直面しています.
- 効果的で長期にわたる術後の鎮痛には 新しい薬剤投与システムが必要です
研究 の 目的:
- ブピバカインを注入したヒドロゲルの局所的および全身の安全性を評価する.
- 羊の脊椎外科手術のモデルで,ヒドロゲルの薬剤放出プロファイルと全身曝露を評価する.
- 水素ゲルの性能と対照群と皮下浸透を比較する.
主な方法:
- ゲラチン基の水素ゲルにブピバカインの結晶を詰め込み,8頭の羊 (グループC) にペディクル・スクルーを挿入した.
- 対照群には,スクルーのみ (A群),無荷のヒドロゲル (B群),皮下ブピバカイン浸透 (D群) が含まれていた.
- 血の薬物濃度,全身安全性パラメータ,および組織学的宿主反応は6日および56日に評価された.
主要な成果:
- ブピバカインを含むヒドロゲル (グループC) は,皮下浸透 (グループD) に比べて,より低いピーク血濃度 (Cmax) と著しく長い排出半減期 (T1/ 2) を示した.
- グループCは28時間後にCmaxが50. 4ng/ mLであったが,グループDは1時間後にCmaxが138. 3ng/ mLであった.
- ヒストロジカル分析では,すべてのグループにおける宿主反応の有意な差異は認められず,良好な局所耐受性を示した.
結論:
- ブピバカインを含むヒドロゲルは,ペディクル・スクルーと併用され,局所および全身的に良好に耐受されます.
- このヒドロゲルシステムは,薬剤の放出を長引かせ,全身の曝露を軽減し,脊椎手術における持続的な術後の鎮痛のための有望な代替手段を提供します.
- この発見は,この局所薬剤投与アプローチが,器具付き脊椎手術後の患者の回復を改善する可能性を裏付けています.
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