与年龄相关的2型糖尿病和小肠之间的相互作用
Masashi Imai1, Keiichi Hiramoto1, Shota Tanaka1
1Department of Pharmaceutical Sciences, Suzuka University of Medical Science.
Biological & pharmaceutical bulletin
|April 7, 2024
概括
2型糖尿病随着年龄的增长而恶化,影响小肠. 这项研究揭示了晚期糖化终产物 (AGEs) 和炎症的增加,导致糖尿病并发症.
科学领域:
- 胃肠病学 胃肠病学
- 内分泌学 在内分泌学.
- 免疫学 免疫学 免疫学
背景情况:
- 2型糖尿病 (T2DM) 是一个日益严重的全球健康问题.
- 在小肠中T2DM的病理机制尚未完全理解.
- 老龄化加剧T2DM及其并发症.
研究的目的:
- 调查T2DM在小肠中的与年龄相关的病理机制.
- 确定与肠道T2DM进展相关的关键分子和细胞变化.
主要方法:
- 使用KK-Ay/TaJcl小鼠模型在10周和50周年龄时发现T2DM.
- 已评估的高级糖化终产品 (AGEs),巨细胞,二胺氧化酶 (DAO),瘤缩因子-α (TNF-α) 和组胺的水平.
- 评估了紧结蛋白 (ZO-1,Claudin1) 和细胞粘附分子的表达.
主要成果:
- 在T2DM小鼠中,糖尿病的严重程度随年龄增加.
- 观察到增高的AGE,巨细胞表达,TNF-α和组胺.
- 观察到DAO表达的降低以及紧结蛋白和细胞粘附分子的表达的降低.
- 这些变化在老年T2DM小鼠中更为明显.
结论:
- 在小肠中,T2DM会诱导AGE/巨细胞/基因组胺和TNF-α信号传递.
- 减少肠道屏障完整性允许炎症媒介进入血液循环,恶化T2DM.
- 衰老加剧了这些病理过程,加剧了T2DM及其并发症.
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