内皮機能不全と非対称性ダイメチルアルギニンの血濃度の上昇は,妊娠後にプレエクラムプシアを発症した妊婦において発生する
Makrina D Savvidou1, Aroon D Hingorani, Dimitrios Tsikas
1Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK.
Lancet (London, England)
|May 10, 2003
まとめ
内皮機能不全と非対称性ジメチルルギニン (ADMA) 濃度の上昇は,子宮内閉塞前発症に先行する. これらのマーカーは胎盤 perfusion 障害を示し,リスク妊娠における内皮機能不全と関連しています.
科学分野:
- 産婦人科と産婦人科を担当しています.
- 心血管研究 循環器科の研究
- 産周医学は,産周医学である.
背景:
- 妊産婦内皮機能不全は,妊娠前出血症で観察されていますが,原因または結果としての役割は不明です.
- 非対称性ダイメチルルギニン (ADMA) は,内皮酸化窒素合成酵素の内生性阻害剤である.
- この研究では,内皮機能不全と上昇したADMAが妊娠前出血症の発症に先行するかどうかを調べました.
研究 の 目的:
- 内皮機能不全と血ADMA濃度の上昇が妊娠前出血症に先行し,それに寄与するという仮説を検証する.
- 子宮動脈ドップラー検査,内皮機能,ADMA濃度,妊娠の結果との関係を評価する.
主な方法:
- 子宮動脈ドップラー波形は,妊娠23〜25週間の86人の女性で評価されました.
- 腕動脈のフローメディエイト拡張を用いて評価された内皮機能.
- すべての参加者の血ADMA濃度が測定されました.
主要な成果:
- 妊娠前出血症を発症した女性は,正常なアウトカム (3.58%対8.59%) を有する女性と比較して,フローメディエーションによる膨張が著しく低下しました.
- 胎盤 perfusion 障害は,かなり高いADMAレベル (2.4μmol/L vs 0.81μmol/L) と関連していました.
- ADMAとフロー・メディエイト・ディラテーションの強い逆相関は,子閉塞前症を発症した女性において観察された (r=-0.8,p=0.005).
結論:
- 妊産婦の内皮機能は,妊娠前出血症の臨床的表れになる前に障害がある.
- 高抵抗性胎盤循環を有する女性のADMA濃度の上昇は,出血前症に寄与する可能性があります.
- ADMAは,子宮内発育制限 (IUGR) と子宮前出血症のリスクのある一部の女性の内皮機能障害に関連しています.
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