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基礎科学と病態生理

Carolyn Accardi1, Mary Nellis1, Bill Liang1

  • 1Emory University School of Medicine, Atlanta, GA, USA.

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まとめ
この要約は機械生成です。

中年期のジクロロジフェニルジクロロエチレン（DDE）曝露は、脂肪酸およびアミノ酸代謝の変化を引き起こし、これは認知機能低下およびアルツハイマー病（AD）に関連する変化を模倣する。これらの発見は、ADリスクの早期バイオマーカーの可能性を示唆している。

キーワード:
中年期のDDE曝露代謝変化脂肪酸代謝アミノ酸代謝認知機能低下アルツハイマー病早期バイオマーカー

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科学分野:

  • 環境保健; メタボロミクス; 神経変性疾患

背景:

  • 血清ジクロロジフェニルジクロロエチレン（DDE）は、DDTの代謝物であり、認知障害およびアルツハイマー病（AD）リスクと関連している。高分解能メタボロミクスは、早期の認知変化およびADに関連する代謝表現型を明らかにする。DDEに関連する中年期の血清における代謝変化が認知機能障害に先行するかどうかを特徴づける必要がある。

研究 の 目的:

  • ジクロロジフェニルジクロロエチレン（DDE）曝露に関連する中年期の血清メタボロームの変化を特徴づけること。認知機能障害およびADの潜在的な代謝前駆体を調査すること。

主な方法:

  • 小児健康開発研究（CHDS）コホートの362人の被験者の分析。LC-MSおよびGC-MSを使用した中年期の血清p,p'-DDE、メタボローム、およびエクスポソームの横断的分析。DDE関連代謝経路を特定するためのメタボロームワイド関連研究（MWAS）。

主要な成果:

  • p,p'-DDEは、脂肪酸代謝経路（カルニチンシャトル、生合成、アラキドン酸、プロスタグランジン、グリセロホスホリピド）の変化と関連していた。アラニンおよびアスパラギン酸アミノ酸の代謝はp,p'-DDEと関連していた。血清p,p'-DDEの増加に伴い、必須脂肪酸（DHA、EPA）およびアシルカルニチンのレベル低下が観察された。

結論:

  • 中年期のDDE関連代謝変化は、認知機能障害およびADに関連するものと重複する。これらの発見は、認知機能低下およびAD発症における潜在的な代謝メディエーターを強調する。中年期の血清DDEとメタボロームを関連付けることは、ADにおける生物学的メカニズムを解明する可能性がある。