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印度尔-3-酸将肠道功能障碍与糖尿病视网膜病变联系起来:一种生物标志物和一种新的治疗方法
Ram Prasad1, Yvonne Adu-Rutledge1, Borhane Ziani2
1Department of Ophthalmology and Visual Sciences, The University of Alabama at Birmingham, Birmingham, Alabama, USA.
Gut
|November 6, 2025
概括
恢复托 (Trp) 的新陈代谢与营养药,如酸 (IPA),可以预防糖尿病视网膜病变 (DR). 这些策略也作为DR在2型糖尿病 (T2D) 的生物标志物.
科学领域:
- 糖尿病中的代谢途径
- 糖尿病的微血管并发症
- 肠道微生物组和宿主新陈代谢
背景情况:
- 在糖尿病中,宿主和微生物的托 (Trp) 代谢发生变化,但机制尚不清楚.
- 糖尿病视网膜病变 (DR) 是糖尿病的一个常见的微血管并发症.
- 了解Trp代谢对于管理糖尿病并发症至关重要.
研究的目的:
- 研究一种2型糖尿病模型 (db/db小鼠) 中通过ACE-2依赖或独立途径增强Trp吸收的策略.
- 确定这些策略是否可以预防糖尿病视网膜病变 (DR) 的发展.
- 分析DR和没有DR的人类Trp代谢物水平.
主要方法:
- 利用转基因细菌来增强ACE-2依赖的Trp吸收.
- 用于ACE-2独立的Trp吸收的Isoleucine-Trp (IW) 双.
- 在db/db小鼠中进行了预防和干预研究,包括使用空间质谱 (MS) 的代谢和视网膜分析.
- 在患有T2D的人群中测量了血Trp代谢物和肠道透性标记物,有或没有DR,以及健康对照.
主要成果:
- 用*Lactobacillus paracasei*-ACE2或IW治疗预防了DR,纠正了肠道失调,并改善了小鼠的葡萄糖平衡.
- 空间MS在视网膜色素上皮层中发现了酸 (IPA),这表明它起着保护作用.
- 患有T2D和DR的个体表现出增加的内毒素和肠道屏障破坏标志物,IPA水平较低,醇硫酸盐水平较高.
结论:
- 针对Trp代谢和IPA的营养药物干预措施显示出预防和治疗DR的希望.
- 恢复Trp代谢或增加IPA水平可以作为DR的生物标志物和治疗策略.
- 这些发现强调了肠道健康,TRP代谢和糖尿病并发症之间的联系.
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