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心臓の血管新生不均衡は,周回性心筋病変症につながる
Ian S Patten1, Sarosh Rana, Sajid Shahul
1Cardiovascular Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02115, USA.
Nature
|May 19, 2012
まとめ
産前期心筋病症 (PPCM) は,血管新生性の不均衡と関連しており,特に子宮内閉塞前症候群ではそうである. この不均衡を標的とした治療法により,PPCMを救出し,PPCMを暗示することができる.
科学分野:
- 心血管生物学 心血管生物学
- 生殖医学は,生殖器医学である.
- 分子医学は分子医学である.
背景:
- 産後の心筋病変 (PPCM) は,妊娠中の女性に影響を与える重度の心疾患です.
- その病因と子宮前出血症との関連はよくわかっていない.
- PPCMのリスクは,妊娠前出血症および複数の妊娠において高まります.
研究 の 目的:
- 周回性心筋症候群における血管新生不均衡の役割を調査する.
- PPCM,子宮内閉塞前症,および血管新生抑制因子の関連性を調査する.
- PPCMの潜在的な治療標的を特定する.
主な方法:
- PPCMの発達を研究するために,心臓のPGC-1αが欠けているマウスモデルを使用しました.
- 救出効果を評価するために投与されたプロ血管新生療法.
- 溶性FLT1 (sFLT1) の循環レベルをマウスとヒトの血サンプルで測定した.
- 野生型およびPGC-1α欠乏したマウスの外部性SFLT1を用いた誘発性心臓機能障害.
主要な成果:
- 心臓PGC-1αが欠けていたマウスは,重度のPPCMを発症し,プロ血管新生療法によって救われました.
- sFLT1のようなVEGF阻害剤の胎盤分泌の増加は,PPCMと関連しており,特に妊娠前出血症および複数妊娠において顕著である.
- sFLT1濃度の上昇は,ヒトにおける亜臨床的な心機能不全と相関し,マウスにおける心機能不全を引き起こした.
- 人間のPPCM患者の血では,sFLT1レベルが著しく高かった.
結論:
- 産前期心筋病は,主に産前期中に過剰な抗血管性シグナル伝達によって引き起こされる血管疾患である.
- 妊娠前出血症と多発妊娠は,抗血管原性環境が悪化しているため,重大なリスク要因です.
- 血管新生不均衡をターゲットにすることは,PPCMのための有望な治療戦略を提供します.
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