胸痛患者におけるセロトニンの冠動脈血管運動効果. 冠動脈狭窄の形態学との関係
D Tousoulis1, G Davies, E McFadden
1Cardiovascular Research Unit, Royal Postgraduate Medical School, Hammersmith Hospital, London, England.
Circulation
|October 1, 1993
まとめ
冠動脈狭窄の形態は,セロトニンに大きく影響する.
科学分野:
- 心血管医学 心血管医学
- 薬理学 薬理学とは
- メディカルイマージング (医学イメージング)
背景:
- 以前の研究では,冠動脈狭窄に対するセロトニンの効果は,従順性によって異なります.
- 動脈動脈狭窄症の形態と,胸痛患者のセロトニン反応の関係については,以前は知られていませんでした.
研究 の 目的:
- 冠動脈狭窄の形態がセロトニンに対する血管圧縮器の反応に与える影響を調査する.
- 胸痛患者におけるセロトニンの効果にプラークの特徴が影響するかどうかを判断する.
主な方法:
- コンピュータ化された定量冠動脈血管図を用いた.
- 冠内セロトニン注入は,冠動脈狭窄症38例の患者15例 (11例の安定性アンギナ,4例の変異性アンギナ) に投与された.
- 狭窄症は形態学によって分類され,同心型,偏心型,複雑型に分類された.
主要な成果:
- 複合的な狭窄症は100%の収縮を示したが,集中的な狭窄症の50%は>=20%の収縮を示した.
- 収縮の大きさは,合併症性狭窄症 (57.69 +/- 7.6%) で最大であり,次いで離心型 (32.08 +/- 4.1%) と同心型 (15.68 +/- 2.8%) であった.
- 不規則なプラークの輪郭は,滑らかな病変と比較して,セロトニンに対するより大きな血管圧縮反応と相関しています.
結論:
- 冠動脈板の形状,特に不規則な輪郭は,セロトニンに対する血管圧縮器の反応を左右する.
- 狭窄症の重度または長さは,プラーク形態学よりも,セロトニン反応と相関性が少ない.
- セロトニン受容体の活性や滑らかな筋肉細胞の反応の変動は,冠動脈疾患における異なる反応を説明する可能性がある.
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