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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies
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低酸素誘導因子-1アルファ遺伝子治療が,中断性閉塞症患者の歩行能力に与える影響
Mark A Creager1, Jeffrey W Olin, Jill J F Belch
1Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA. mcreager@partners.org
Circulation
|September 28, 2011
まとめ
Ad2/HIF-1α/VP16を用いた遺伝子治療は,外周動脈疾患患者の歩行時間を改善しませんでした. この研究では,中断性クラウディケーションの治療においてプラセボに比べて有意な利点が見つかりませんでした.
科学分野:
- 心血管研究 循環器科の研究
- 遺伝子療法の遺伝子治療法
- 分子医学は分子医学である.
背景:
- 低酸素誘導因子-1α (HIF-1α) は,低酸素に対する細胞の反応を調節する.
- HIF-1αは,臨床前モデルの裏側血管の成長と血流を促進します.
- 断続的なクラウディケーションによる外周動脈疾患 (PAD) は,運動中に足の痛みを引き起こします.
研究 の 目的:
- PAD患者の歩行能力を改善するAd2/HIF-1α/VP16遺伝子療法の有効性を評価する.
- 構成的に活性なHIF-1αがクラウディケーション症状および関連するバイオマーカーに与える影響を評価する.
主な方法:
- クラウジケーションの289人の患者を対象としたダブルブラインド,ランダム化試験.
- 患者は,筋肉内投与のAd2/HIF-1α/VP16またはプラセボを3つの投与量の1つで受けました.
- 評価には,ランニングミルの分級テスト,足首-腕指数,およびベースラインおよび12ヶ月の生活の質の評価が含まれていました.
主要な成果:
- プラセボとAd2/HIF-1α/VP16投与群の間で,ピーク歩行時間の有意な違いは6ヶ月で観察されなかった.
- クラウディケーション発症時間,足首-腕指数,生活の質の測定値も有意な改善を示さなかった.
- この研究では,プラセボと比較して,この遺伝子治療の統計的に有意な利点が見つかりませんでした.
結論:
- 筋肉内でのAd2/HIF-1α/VP16遺伝子治療は,断続性クラジケーションの有効な治療法ではありません.
- PADの他の治療戦略を探るため,さらなる研究が必要になる可能性があります.
- 臨床試験NCT00117650では,この遺伝子療法アプローチの有効性が実証されなかった.
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