数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
研究问题
Despite the associations between metabolic modulation and AD risk, the underlying cellular and molecular mechanisms remain incompletely understood.
方法
（全文无独立方法节，正文亦未给出可抽取的实验动作句）
核心结论
In AD-F mice, DHA and NR treatment also trended toward improved memory compared to AD fed chow, but the difference in latency was not significant (p = 0.109 and p = 0.064, respectively), suggesting that simultaneous fructose feeding reduced the efficacy of DHA and NR.；Significance is indicated on the graphs ((∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001 vs. ‖ 结论：Our study represents the first to examine and compare the effects of fructose, DHA, and NR on 5xFAD transcriptional signatures in core brain regions regulating cognition (hippocampus) and metabolism (hypothalamus) at single cell resolution.
局限
Future studies of both sexes in other AD models such as tauopathy mouse models and the 3xTg with both Aβ plaques and neurofibrillary tangles, and functional targeting of the prioritized cell types, genes, and pathways are warranted to assess the generalizability and causality of our findings.
对本项目的价值
★★★★☆ 脑老化是最大未满足需求，也是终点最难量化的领域；biomarker 与认知读数选择最敏感。命中核心 NAD⁺轴；队列：UK Biobank；最大样本量约 15；设计 前瞻队列、单细胞。
全文来源
PMC JATS 全文（正文 71,078 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Hippocampal and hypothalamic cell-type specific mechanisms underlying nutritional and metabolic modulation of Alzheimer's disease.
- 期刊与标识：iScience · PMID 42936480 · DOI 10.1016/j.isci.2026.117920**
B 级证据分级：B 级（同行评议临床前研究，主要为动物模型）
本文核心结论来自动物模型或体外细胞学，属临床前证据，不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义，与人类临床结局之间仍有距离。
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