时间标签：数据日期 2026-11-01 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/31–2026/11/01 ｜ 情报发生日期 2026-11-01
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
However, it remains unknown as to whether extracellular vesicles (EVs) derived from hucMSCs (hucMSC-EVs) provide protective effects against transplant-related trauma-induced islet injury.；This study aimed to investigate the effects of hucMSC-EVs on islet graft survival in a syngeneic mouse model of islet transplantation and to examine the mechanism of protection.
方法
Human umbilical cord mesenchymal stem cells (hucMSCs) have multiple functions including maintaining cellular homeostasis.
核心结论
Co-transplantation of hucMSC-EVs with 250 islet equivalents significantly improved glycaemic control (p<0.01) and glucose tolerance (p<0.01) in diabetic mice.；Apoptotic beta cells were significantly reduced in grafts receiving EVs, as shown by TUNEL assays (p<0.05) and cleaved caspase 3 staining (p<0.05).；In vivo, depletion of miR-182-5p in hucMSC-EVs abolished the ability to prevent beta cell apoptosis and improve glycaemic control in diabetic mice. hucMSC-EVs significantly improved the survival and function of islet grafts by delivering miR-182-5p, which…
局限
（原文未给出可直接抽取的对应表述）
对本项目的价值
临床前机制证据，需评估物种外推与剂量可行性：代谢—器官轴是干预安全性的主要约束面。 ｜ 价值分 2.4/5（★★☆☆☆）
全文来源
未取到全文 → 本卡为摘要级解读，未核验全文
原文题录
- 英文标题：Extracellular vesicles from human umbilical cord mesenchymal stem cells protect grafted islets against endoplasmic reticulum stress-induced mitochondrial dysfunction via modulating XBP1-based calcium homeostasis.
- 期刊与标识：Diabetologia · PMID 42961465 · DOI 10.1007/s00125-026-06910-3
A 级证据分级：A 级（同行评议人体研究）
本文属人体研究证据，但需注意：观察性或小样本干预的结论不等于已证实临床获益；效应量与长期安全性仍需更大规模、更长随访的试验验证。
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。