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
Aging-induced endothelial dysfunction is a core driver of age-related cardiovascular diseases (CVDs).
方法
In 20-month-old naturally aged mice, 12-week soybean polysaccharide (SP) supplementation restored endothelium-dependent relaxation, reduced aortic reactive oxygen species and VCAM-1 in the aortic endothelium, and attenuated colon senescence, improved gut barrier integrity, and reduced systemic inflammation, as shown by decreased serum LPS, IL-1β, TNF-α, and fecal and serum TMA/TMAO levels.
核心结论
SP enriched butyrate-producing gut bacteria, including Lachnospiraceae_NK4A136_group, and increased gut and serum butyrate, consistent with enhanced microbial short-chain fatty acid biosynthesis capacity predicted by PICRUSt2.；Direct butyrate supplementation reproduced these vascular and colonic benefits.；It activated PPARγ signaling and downregulated p21, ICAM-1, VCAM-1, and p16, whereas PPARα and PPARδ remained unchanged. ‖ 结论：It activated PPARγ signaling and downregulated p21, ICAM-1, VCAM-1, and p16, whereas PPARα and PPARδ remained unchanged.
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
★★★☆☆ 细胞衰老清除/重编程是项目干预管线的核心支柱之一。
原文题录
- 英文标题：PPARγ/P21 Signaling Mediates Butyrate-Driven Protection against Aging-Related Endothelial Dysfunction: A Novel Effect of Soybean Polysaccharide via the Gut-Vascular Axis.
- 期刊与标识：J Agric Food Chem · PMID 42949332 · DOI 10.1021/acs.jafc.6c10019**
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。