时间标签：数据日期 2026-10-31 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/28–2026/10/31 ｜ 情报发生日期 2026-10-31
研究问题
Whether thymic involution differs in LOMG patients and whether thymic involution contributes to the pathogenesis of LOMG remain unknown.
方法
This study included two independent cohorts.；The CT cohort was used to evaluate thymic structural features, including thymic volume, surface area, and gray value.；The flow-cytometry cohort was used to evaluate thymic output by measuring circulating naïve T cells and RTEs.；These two cohorts were analyzed as parallel and complementary datasets.
核心结论
There was no significant difference in the thymic score distribution between the MG and control groups.；The data showed that MG patients had significantly larger thymic volume and surface area than controls (p < 0.001).；MG patients under the age of 50 showed higher thymic gray values, while those over the age of 50 showed lower values, compared with controls (Fig. ‖ 结论：In conclusion, patients with LOMG showed exaggerated thymic involution and reduced thymic output, supporting potential thymic involvement in the pathophysiology of LOMG.
局限
Obesity has been associated with an increased risk of MG in the UK [], and a higher BMI was linked to an increased risk of generalization in ocular MG [].；Whether targeting BMI or diabetes through intervention can alleviate thymic involution and reduce the incidence of LOMG warrants further investigation.；Given that exposure and outcome were measured almost simultaneously, the direction of causality needs to be confirmed in prospective investigations.
对本项目的价值
★☆☆☆☆ 炎症衰老是几乎所有慢性老年病的公共通路，也是最有希望做「抗炎但保留免疫」解耦的靶点。
全文来源
PMC JATS 全文（正文 25,382 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Exaggerated thymic involution in late-onset myasthenia gravis: clinical and immunological evidence.
- 期刊与标识：Immun Ageing · PMID 42958277 · DOI 10.1186/s12979-026-00589-1
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」撰写，依据已获取的期刊全文（方法、样本量与结论已回到原文核对）；未能获取全文的同批条目另行标注「摘要级」，全程未做任何数值推算补全。