S-ニトロソグルタチオンは,大動脈血管新生手術後の無症状の栓塞を減少させます
Zoltan Kaposzta1, Andrew Clifton, Jane Molloy
1Clinical Neuroscience, St George's Hospital Medical School, London, UK.
Circulation
|December 11, 2002
まとめ
S-ニトロソグルタチオン (GSNO) は,大動脈血管新生手術後の栓塞信号を著しく減少させ,重度の狭窄症の患者の脳卒中を予防しました. この酸化窒素のドナーは,血管内臓手術の安全性を向上させるための有望な新しいアプローチを提供します.
科学分野:
- 血管外科 血管外科
- 神経学 神経学とは
- 薬理学 薬理学とは
背景:
- Carotid angioplastyの合併症には,血栓性脳卒中が含まれ,これはしばしば介入部位での血小板の集積によるものです.
- トランスクラニアルドップラー超音波は,標準的な抗血小板治療でも,処置後の無症状の栓塞信号を検出することができます.
- 酸化窒素のドナーであるS-ニトロソグルタチオン (GSNO) は,選択的な血小板活性を示しています.
研究 の 目的:
- 頸動脈血管形成術後の血栓の減少におけるGSNOの有効性を評価する.
- 血栓信号周波数と術後の脳卒中の発生に対するGSNOの影響を評価する.
主な方法:
- 16人の患者を対象としたダブルブラインド,ランダム化試験で,頸動脈血管形成術と症状性狭窄症のステントを施した.
- 患者は手術後90分間,アスピリンとヘパリンと共にGSNOまたはプラセボを投与された.
- トランスクラニアル・ドップラー検査は,治療前および治療後24時間までの間,中脳動脈の栓塞信号をモニターした.
主要な成果:
- GSNOの投与は,プラセボと比較して0~3時間で95%,6時間で100%のエンボリックシグナル減少をもたらした (P=0.007とP=0.01).
- プラセボ群の2人の患者は,血管新生手術後のipsilateral脳卒中を患った.
- GSNO治療群では脳血管疾患は観察されなかった.
結論:
- S-ニトロスグルタチオンは,高度の頸動脈狭窄症の内血管治療後の急激に減少する栓塞信号に高い有効性を示しました.
- GSNOは,大動脈血管新生手術とステント設置に関連した脳卒中リスクを軽減するための潜在的な治療戦略を表しています.
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