肥満における微血管機能障害:肥満に関連した微血管病,高血圧,インスリン抵抗性への影響
Renate T de Jongh1, Erik H Serné, Richard G IJzerman
1Department of Medicine, VU University Medical Center, Amsterdam, The Netherlands.
Circulation
|May 12, 2004
まとめ
肥満はマイクロ血管機能を損なっており,毛細血管の徴募と血管拡張に影響を及ぼします. この機能障害は,女性における高血圧と低インスリン感受性に関連しています.
科学分野:
- 心血管生理学 心血管の生理学
- メタボリック・ヘルス (代謝の健康)
背景:
- 肥満は,微血管病,高血圧,およびインスリン抵抗性の既知の危険因子です.
- 微血管機能不全を引き起こす肥満の正確な役割は,まだ調査中です.
研究 の 目的:
- 健康な女性のマイクロ血管機能に対する肥満の影響を調査する.
- 肥満に起因するマイクロ血管機能障害が高血圧とインスリン抵抗性に寄与するかどうかを判断する.
主な方法:
- 痩身と肥満の健康な女性のマイクロ血管機能の比較.
- 毛細血管顕微鏡を用いた皮膚毛細血管徴募の評価.
- イオントフォレシスによるエンドセリウム依存およびエンドセリウム依存の血管拡張の評価.
主要な成果:
- 肥満の女性は,痩せた女性と比較して,毛細血管のリクルートとアセチルコリン媒介の血管拡張の障害を示した.
- 肥満はシストリック血圧の上昇とインスリン感受性の低下と関連していました.
- 微血管機能,特に毛細血管のリクルートとアセチルコリン血管拡張は,インスリン感受性と正の相関関係があり,血圧と負の相関関係がある.
結論:
- 肥満は,基礎および高インスリン血症マイクロ血管機能の障害によって特徴付けられます.
- 女性における微血管機能不全は,血圧上昇とインスリン感受性の低下と関連しています.
- 微血管機能の障害は,微血管病,高血圧,インスリン抵抗性などの肥満に関連する疾患において重要な役割を果たす可能性があります.
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