脆弱性および脆弱性前の高齢者のビタミンB濃度:MTHFRおよびTCN2ポリモルフィズムとその総合的なDNAメチル化および身体能力との関連
Pitaksin Chitta1,2,3, Busadee Pratumvinit2, Witchayaporn Kaewboonruang2
1Research Division, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Nutrition & metabolism
|September 2, 2025
まとめ
遺伝とビタミンBの要因は高齢者の弱さに影響します 全球的なDNAメチル化が低くなることは 弱体化前期に関連しており 早期発見マーカーの可能性を示唆しています
科学分野:
- ゲロントロジーと栄養化学
- エピジェネティクスと老化に関する研究
背景:
- フレリティ症候群は高齢者にとって大きな課題です
- 遺伝的・生化学的要因を理解することは 脆弱性を管理する上で極めて重要です
研究 の 目的:
- タイの高齢者の遺伝子変異,ビタミンB濃度,および全局的なDNAメチル化との関係を調査する.
- 早期の脆弱性検出のための潜在的なバイオマーカーを特定する.
主な方法:
- 170人のタイの高齢者 (≥60歳) の身体的パラメータ,ビタミンB,クレアチニン,ホモシステインを評価した.
- メチレンテトラヒドロフォラート還元酵素 (MTHFR) とトランスコバラミンII (TCN2) の遺伝子ポリモルフィズムが確認された.
- 全球DNAメチル化 (全球DNAm) を測定した.
主要な成果:
- 物理的なパラメータ (椅子スタンド,歩行速度など) の大きな違い 健常者,弱体前者,弱体前者 (p<0. 01) グループで観察された.
- 葉酸とビタミンB6の濃度は,それぞれMTHFRとTCN2の遺伝子型によって異なる.
- 特にMTHFR C677T遺伝子型を有する個体において,低レベルのグローバルDNAmは弱体化前症候群と関連していた.
結論:
- 遺伝的変異,微量栄養素の状態,そして老化の弱さの表遺伝的変異の相互作用を示した.
- エピジェネティックとメタボリックマーカーの可能性を示唆しています
- 原因経路を確認するための縦断的およびメカニズム的研究の必要性を強調する.
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