理想の血圧は 認知領域によって異なりますか? イギリスのバイオバンク研究
Matthew J Lennon1,2, Jan Willem Van Dalen3, Jessica W Lo1
1Centre For Healthy Brain Aging (CHeBA), Discipline of Psychiatry and Mental Health, Level 1, AGSM (G27), University of New South Wales, Kensington, New South Wales, Australia.
Journal of clinical hypertension (Greenwich, Conn.)
|August 22, 2025
まとめ
血圧 (BP) は認知機能に非線形的に影響します. 高血圧と低血圧の両方が認知機能低下のリスクを高め,最適なレベルは認知領域によって異なります. 高齢の男性のような特定の集団は 低血圧の影響に対して より脆弱です
科学分野:
- 神経科学
- 心血管の健康
- ゲロントロジー
背景:
- 高血圧 (BP) は認知機能低下の危険因子として知られています.
- 新興の研究では高血圧と低血圧の両方が認知リスクの増加と関連していることが示されています.
- これらの複雑な関連性を理解することは 公衆衛生戦略にとって極めて重要です
研究 の 目的:
- 静脈血圧 (SBP) と静脈血圧 (DBP) と認知機能の間の非線形関係を調査する.
- これらの非線形関係が 異なる認知領域に異なっているのかを 判断する: 流動的知性,注意力,反応時間
- 年齢,性別,高血圧歴などの要因が BP-cognition リンクをどのように変化させるかを調べる.
主な方法:
- 439,301人の参加者を含む英国バイオバンクの研究データを活用した.
- ベースラインBPと認知測定値を分析するために,自然スプリンの非線形混合効果回帰モデルを使用した.
- 認知機能の評価 初期段階と時間経過,人口統計と臨床的要因との軌跡と相互作用の分析
主要な成果:
- 基礎SBPとすべての認知領域 (流動的知性,注意力,反応時間) の間に有意な反転したU型関係が見つかりました.
- 各認知領域の異なる最適なSBPレベル (例えば,流動性知能の118 mmHg,注意力の127.5 mmHg) を特定した.
- 流動的な知性と注意力とのDBPの非線形関連が観察され,最適なレベルが変化しています. ベースラインより高いSBPは,注意の軌跡とマイナーな逆関連を示した.
結論:
- 血圧と認知機能の関係は非線形であり,最適なレベルは認知領域によって異なります.
- 高齢者,男性,未治療の高血圧患者は 低血圧による不良認知効果に より敏感になる可能性があります.
- これらの発見は,認知健康の評価においてBPの変動性と個々の要因を考慮することの重要性を強調しています.
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