脳の[NAD+]/[NADH]および[NADPH]/[NADP+]の変化は,老化と抗老化の食事制限に伴います

Leah E Jamerson¹, Tara D Bradshaw², Patrick C Bradshaw¹

¹Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States.

Frontiers in aging neuroscience

|February 20, 2026

まとめ

NAD+とNADPH比で測定される脳のリドックス状態は,老化と断食とともに変化します. 断続的な断食は有益な減量シフトを誘発し,潜在的に老化を遅らせ,神経保護を促進します.

科学分野:

神経科学は神経科学である.
メタボリズムは
老化に関する研究

背景:

[NADPH]/[NADP ⁺]と[NAD⁺]/[NADH]の比率によって示される脳のリドックスバランスは,老化に関与しています.
ダイエット制限 (DR) と断続的な断食 (IF) は酸化還元状態に影響を与え,その抗老化効果を媒介する可能性がある.

研究の目的:

特定の代謝物ペアを指標として使用して,老化とIFが脳のリドックス状態にどのように影響するかを調査する.
レドックス変化,老化,IF誘発神経保護の関係を探求する.

主な方法:

メタボライト対比 (ピルバート/乳酸塩,アセトアセテート/β-ヒドロキシブチラート,マラート/ピルバート,イソシトラート/アルファケトグルタレート) を,細胞プラズマおよびミトコンドリアのリドックス状態の指標として利用した.
老化とDRモデルからの脳プロテオームとRNA-Seqデータを分析した.
C57BL/6Jマウス,C57BL/6Nマウス,およびヒトのレドックス変化を比較した.

主要な成果:

C57BL/6Jマウス脳とC57BL/6Nマウスとヒトと比較して,老化によって誘発された逆のサイトプラズマ的リドックス変化.
IFは,脳の中核プラズマおよびミトコンドリアのリドックス状態における普遍的還元シフトを引き起こした.
IFの還元性シフトは,細胞質の[NAD⁺]/[NADH]で,ケトン補給による酸化シフトと対照的に見られます.

結論:

断続的な断食は,脳,特にミトコンドリアにおける有益な循環的還元性還元酸化シフトを促進します.
これらのリドックスシフトは,IFに関連した神経保護および抗老化効果を駆動する可能性があります.
これらの代謝経路を理解することは,健康的な老化のための戦略を開発するための鍵です.

キーワード:

NAD+ NAD+ NAD+ となっている.NADPHとNADPHを組み合わせたものです.老化,老化は,老化しています.アストロサイト (Astrocyte) とは脳脳の脳脳の脳ダイエット制限食事制限断食を断食する.レドックス・オードックス・リドックス (Redox Redox) とは

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