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コレステロールを下げる治療が冠動脈内皮血管運動機能に及ぼす影響 冠動脈疾患の患者における冠動脈内皮血管機能に対するコレステロールを下げる治療の効果
J A Vita1, A C Yeung, M Winniford
1Boston University School of Medicine, Boston, MA, USA. jvita@bu.edu
Circulation
|August 23, 2000
まとめ
シムバスタチンの6ヶ月の治療は,冠動脈動脈疾患とわずかにコレステロールが上昇した患者の冠動脈内皮血管運動機能を有意に改善しませんでした. コレステロールを下げる治療法
科学分野:
- 心血管医学 心血管医学
- 薬理学 薬理学とは
背景:
- 内皮機能不全は,心血管疾患に関与しています.
- コレステロールを下げる治療は,心血管の利点があることが知られている.
研究 の 目的:
- 冠動脈内皮血管運動機能に対するシンバスタチンの効果を調査する.
- シムバスタチンが冠動脈疾患の患者の内皮機能を改善するかどうかを判断する.
主な方法:
- ランダム化,ダブルブラインド,プラセボ対照研究.
- 60人の冠動脈疾患の患者は,シムバスタチン (40 mg/d) またはプラセボを6ヶ月間投与されました.
- 冠動脈内皮血管運動機能は,アセチルコリンと物質Pの冠動脈内注入を使用して評価されました.
主要な成果:
- シムバスタチンは,LDLコレステロールを40%大幅に低下させた.
- シムバスタチンとプラセボは,アセチルコリンに反応して,心裏冠動脈収縮を有意に変化させなかった.
- 物質Pの注入によって評価された冠動脈微血管の内皮に依存した膨張は,治療後のグループ間で有意な違いを示さなかった.
結論:
- シムバスタチンの6ヶ月の治療は,冠動脈動脈疾患とわずかにコレステロールが上昇した患者の冠動脈内皮血管運動機能を有意に改善しませんでした.
- 研究結果は,コレステロールを低下させることで,内皮機能に与える影響は複雑で,直接的な血管運動改善によってのみ媒介されるわけではないことを示唆している.
- スタチン療法の心血管上の利点の背後にあるメカニズムを明らかにするために,さらなる研究が必要です.
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