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肝細胞成長因子を発現するアデノウイルスベクターによる心臓発作後の治療は,マウスの慢性左心室リモデリングと機能不全を緩和します
Yiwen Li1, Genzou Takemura, Ken-ichiro Kosai
1Second Department of Internal Medicine, Gifu University School of Medicine, 40 Tsukasa-Machi, Gifu 500-8705, Japan.
Circulation
|April 16, 2003
まとめ
肝細胞成長因子 (HGF) 遺伝子治療は,心筋筋細胞の成長を促進し,線維症を軽減することにより,心筋梗塞後の心臓機能を改善しました. これは,心臓発作後の心不全に対する新しい治療戦略を提供します.
科学分野:
- 心血管生物学 心血管生物学
- 再生医学は,再生医療である.
- 遺伝子療法の遺伝子治療法
背景:
- 肝細胞成長因子 (HGF) は,組織再生,血管新生,抗アポトーシスに役割を果たします.
- 心筋梗塞 (MI) の後の左心室 (LV) の改造と心不全に対するHGFの慢性的な影響は不明である.
研究 の 目的:
- 心筋梗塞後の有害なLVリモデリングと機能不全を緩和するHGF遺伝子療法の治療的可能性を調査する.
主な方法:
- アデノウイルス媒介によるヒトHGF (Ad.CAG-HGF) の投与は,MIのマウスモデルにおける後肢の筋肉へ.
- LVリモデルの評価,機能,心臓発作のサイズ,心筋細胞高縮,線維症,およびMI後の4週間の細胞増殖/アポトーシス.
主要な成果:
- HGFで治療されたマウスは,LVのリモジレーションと機能が改善され,LVの穴が小さくなり,心臓と体重の比率が低下し,断片的縮小が増加し,LVの終末ダイアストリック圧力が低下した.
- HGFで治療されたマウスでは,心筋細胞高縮の増加,血管密度の高い心臓発作壁の厚み,心室線維症の有意な減少が観察されました.
- 心臓発作の大きさは似ていたが,HGF治療はc-Met/HGF受容体発現を増加させ,心臓発作ゾーン近くのアポトーシスを減少させ,粒状組織細胞増殖を促進した.
結論:
- 発作後のHGF遺伝子療法は,LVリモデリングと心臓機能を効果的に改善しました.
- 治療効果は,心筋細胞高縮,心臓発作の壁の加厚,血管の保存,および抗線維作用に起因する.
- これらの発見は,心臓発作後の心不全の治療のための有望な新しいアプローチとして,HGF遺伝子治療を示唆しています.
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