霊長類の回頭脳におけるPSD-95阻害剤による脳卒中の治療
Douglas J Cook1, Lucy Teves, Michael Tymianski
1Toronto Western Hospital Research Institute, Toronto, Ontario, M5T 2S8, Canada.
Nature
|March 6, 2012
まとめ
脳卒中に対する薬理学的神経保護は,より高いレベルの脳で達成可能である. 脳卒中後に投与されたPSD-95阻害剤は,非ヒト霊長類の損傷を予防し,機能を改善し,有望な新しい脳卒中治療戦略を提供しました.
科学分野:
- 神経科学は神経科学である.
- 薬理学 薬理学とは
- 脳卒中研究 卒中研究
背景:
- 脳卒中は,世界中で死と障害の主な原因であり,有効な薬理学的治療法は限られています.
- 1000以上の実験的な脳卒中治療法が,臨床前モデルからヒトへの翻訳に失敗しています.
- 薬理学的神経保護は,より高い階層の脳では実現不可能だという説が盛んである.
研究 の 目的:
- 人以外の霊長類の回頭脳脳卒中モデルで神経保護のためのPSD-95阻害剤の有効性をテストする.
- 薬理学的介入による脳卒中治療の進歩のための実行可能な戦略を提供すること.
- 組織神経保護と機能神経学的結果の間の相関を調査する.
主な方法:
- 人間と類似しているため,より高い階層の回頭脳型非人間霊長類を活用した.
- 投与されたPSD-95阻害剤は,神経毒経路からポストシナプス密度タンパク質PSD-95を分離します.
- 磁気共鳴画像 (MRI) と組織学を用いて脳卒中の損傷を評価し,神経行動分析を用いて神経学的機能を評価した.
主要な成果:
- 脳卒中の発症後にPSD-95阻害剤で治療された非ヒト霊長類では,脳卒中の損傷が予防されました.
- 治療により,心臓発作の量が大幅に減少し,不全性脳組織における遺伝子転写能力が保たれた.
- MRIで評価された組織の神経保護と神経機能の保存の間に強い相関が観察されました.
結論:
- 組織神経保護と脳卒中後の機能的改善は,PSD-95阻害剤を使用した回頭脳非ヒト霊長類で達成可能である.
- この研究は,より高次元の脳における薬理学的神経保護の実現可能性を確立しています.
- この発見は,PSD-95阻害剤をヒトでの脳卒中治療の臨床試験に導入することを支持しています.
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