数据日期 2026-10-29 · 生成时间 2026-10-29 06:03
证据级别：摘要级。本条依据 PubMed 结构化摘要与元数据撰写，付费墙全文未获取、未逐节核验，本站未做任何数值推算补全。
研究问题
Impaired muscle regeneration is a key contributor to age-related muscle decline, yet the molecular mechanisms linking muscle water homeostasis to regenerative failure remain incompletely understood.
方法
Aquaporin-4 (AQP4), a major skeletal muscle water channel, may have functions beyond water transport that are relevant to muscle maintenance and repair.
核心结论
We investigated whether altered AQP4 expression contributes to age-related defects in skeletal muscle regeneration and whether AQP4 may represent a targetable pathway for muscle dysfunction associated with ageing.；Skeletal muscle from young adult (25-week; n = 9) and aged (85-week; n = 8) rats was analysed for extracellular and intracellular water content by bioimpedance.；AQP4, AQP1 and myogenic markers were measured by Western blot.；Satellite cells isolated from skeletal muscle were assessed for proliferation, differentiation and expression of differentiation markers. ‖ 结论：Experimental AQP4 loss disrupts myogenic signalling, membrane organization and increases progression to senescence, whereas AQP4 restoration rescues these defects.
局限
未能获取全文，具体设计细节、失访与统计学处理无法核验。
对本项目的价值
★★★☆☆ 衰弱/肌少症是少有的已有监管认可终点的老年综合征，是临床转化的最短路径。
原文题录
- 英文标题：Aquaporin-4 Orchestrates Muscle Cell Differentiation and Satellite Cell Preservation: A Novel Target in Age-Related Muscle Decline.
- 期刊与标识：J Cachexia Sarcopenia Muscle · PMID 42936920 · DOI 10.1002/jcsm.70412**
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。
关于本文的文献来源：本站依据 IMA 知识库「五刊监控·深度文献卡片」（SOP §4.2 摘要级）撰写，依据期刊公开摘要与 PubMed 元数据；付费墙全文未获取之处已标注「待补全文」，未做任何数值推算补全。