公衆衛生
Eleni Palpatzis1,2, Pablo Aguilar3,4,5, Carmen M Colceriu1,4
1Global Health Institute Barcelona (ISGlobal), Barcelona, Spain.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
まとめ
地域の歩行性が高いほど、神経変性マーカーと抑うつ症状が減少し、特に貧困地域で顕著である。認知症と診断された個人では、アミロイド負担との関連も見られる。
科学分野:
- 神経科学
- 都市の健康
- 老年医学
背景:
- 地域歩行性は、高齢者の認知機能と精神的健康への影響がますます認識されている。
- 既存の研究では、都市設計と健康転帰との関連が示唆されているが、バイオマーカーやメンタルヘルスとの具体的な関連についてはさらなる調査が必要である。
研究 の 目的:
- アミロイド、神経変性、神経炎症の脳脊髄液(CSF)マーカーと地域歩行性との関係を調査すること。
- 地域内の貧困度と認知状態を考慮して、高齢者の歩行性と抑うつ症状との関連を調べること。
主な方法:
- 認知機能障害のある個人および正常な個人を含む、Sant Pau Initiative on Neurodegeneration(SPIN)コホートの255人の参加者の横断的分析。
- 300m半径内での歩行性の評価、およびCSFバイオマーカー(Aβ42、T-tau、YKL-40)と抑うつ症状(GDS-30)を含む転帰。
- 地域内の貧困度(Area Deprivation Index)と認知状態による層別化、共変量を調整した重回帰モデル。
主要な成果:
- より高い歩行性は、全体サンプルにおけるT-tau(神経変性)の低下と関連していた。
- 高度に貧困な地域では、より高い歩行性がT-tauおよびYKL-40(神経炎症)の低下と相関していた。
- より高い歩行性は、特に認知症と診断された個人において、アミロイドベータ(Aβ)負担の低下と関連していた。
結論:
- 地域歩行性は、特に貧困な都市環境において、神経変性、神経炎症、抑うつ症状の軽減と関連している。
- これらの発見は、歩行性を促進する都市計画介入が高齢化人口の脳と精神的健康に利益をもたらす可能性を示唆している。
- 歩行性と健康転帰を結びつける身体活動やメンタルヘルスなどの媒介経路を解明するためには、さらなる研究が必要である。
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