公衆衛生
Jonathan Davitte1, Usha Gungabissoon2, Jessica Chao1
1GSK, Collegeville, PA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
まとめ
帯状疱疹ワクチン(HZ-Vx)は、APOE-e4キャリアおよび非キャリアの両方で認知症のリスクを低下させる可能性があります。しかし、若い成人における帯状疱疹(HZ)感染は、認知症のリスク増加に関連しています。
科学分野:
- 神経科学
- 遺伝学
- 疫学
背景:
- 以前の研究では、帯状疱疹ワクチン(HZ-Vx)接種者において認知症リスクが低下することが示唆されています。
- 遺伝的要因、特にAPOE-e4キャリアの状態が、この保護効果に影響を与えるかどうかは不明なままです。
研究 の 目的:
- HZ-VxおよびHZ(帯状疱疹)と認知症リスクとの関連を調査すること。
- APOE-e4キャリアの状態がこれらの関連を修飾するかどうかを判断すること。
主な方法:
- 2023年までの英国バイオバンクおよびFinnGenコホートのデータを利用しました。
- 年齢、性別、APOE-e4の状態に基づいて、曝露者(HZ-Vx/HZ)と非曝露者(1:5)をマッチングしました。
- 全原因認知症、血管性認知症(VaD)、アルツハイマー病(AD)との関連を、年齢およびAPOE-e4キャリアの状態別に層別化して分析するために、Cox回帰を使用しました。
主要な成果:
- HZ-Vxは、APOE-e4キャリアの有無にかかわらず、英国バイオバンクコホートにおいて認知症およびADのリスク低下と関連していました。
- 45〜64歳の個人における帯状疱疹(HZ)感染は、英国バイオバンクおよびFinnGenコホートの両方で、認知症およびVaDのリスク増加に関連していました。
- 65〜74歳の高齢者におけるHZは、認知症リスクとの有意な関連を示しませんでした。
結論:
- 本研究の結果は、HZ-VxがAPOE-e4遺伝子型全体で有効な認知症リスク低減戦略となる可能性を支持しています。
- 若い成人におけるHZ感染は、さらなる調査が必要な認知症のリスク因子となる可能性があります。
- HZ、ワクチン接種、認知症リスク間の相互作用を理解するには、継続的な研究が必要です。
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