Ginseng extract improves synaptic resiliency: A key factor for healthy cognitive aging
Michael F Almeida1,2,3,4, Morgan C Pait1, Katherine M Rentschler1
1Biotechnology Research and Training Center, University of North Carolina-Pembroke, Pembroke, North Carolina, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 19, 2025
まとめ
Panax quinquefolius (PanQ) extract boosts the autophagy-lysosomal pathway (ALP) and cathepsin B (CatB), enhancing synaptic function and cognitive performance in aging rats.
科学分野:
- 神経科学
- 細胞生物学
- 栄養科学
背景:
- オートファジー-リソソーム経路(ALP)の機能不全は、タンパク質恒常性の破綻を招き、加齢関連タンパク質病の一因となります。
- 食事介入は、認知機能の改善やアルツハイマー病のリスク低減に有望であることが示されています。
研究 の 目的:
- 植物由来抽出物がオートファジー-リソソーム経路(ALP)およびカテプシンB(CatB)活性に及ぼす影響を調査すること。
- 加齢モデルにおける認知機能およびシナプス回復力の強化におけるアメリカニンジン(PanQ)抽出物の可能性を評価すること。
主な方法:
- カテプシンB(CatB)を増強する能力について植物抽出物をスクリーニングするために海馬切片を使用しました。
- アメリカニンジン(PanQ)抽出物は、シナプスタンパク質、オートファジーマーカー(LC3-II)、および老化ラットにおける認知機能への影響についてテストされました。
- シナプス回復力は、リソソームストレスモデルで評価されました。
主要な成果:
- アメリカニンジン(PanQ)抽出物は、活性カテプシンB(CatB)レベルを大幅に増加させました。
- PanQ治療は、シナプスタンパク質レベルおよびオートファジーマーカーLC3-IIの上昇と相関していました。
- PanQは、老化ラットにおけるシナプス回復力と認知機能を改善しました。
結論:
- アメリカニンジン(PanQ)はオートファジー-リソソーム経路(ALP)を強化し、タンパク質恒常性ネットワークが認知維持に関与していることを示唆しています。
- シナプス回復力は、食事成分によって影響を受ける重要な要因であり、認知機能に影響を与えます。
- PanQは、加齢に伴う認知機能低下に対する食事介入として有望です。
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