慢性病老鼠模型中的肠道变化与饮食诱导的血管化
Piotr Bartochowski1,2, Irene Cortijo1, Shruti Bhargava3
1RD Néphrologie SAS, Montpellier, France.
FEBS open bio
|June 17, 2025
概括
慢性病 (CKD) 中的血管化与肠道粘液产量减少有关,可能会恶化尿路毒素的积累. 增强肠道粘液屏障可能为CKD患者提供治疗策略.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 胃肠病学 胃肠病学
- 病理学 病理学 病理学
背景情况:
- 慢性病 (CKD) 经常与肠道疾病和血管化 (VC) 相联系.
- 在CKD中已知肠道屏障变化,如增加透性和炎症,但VC对这些变化的影响尚不清楚.
- 尿素毒素和炎症被怀疑是VC和肠道功能障碍之间的关系的调解者.
研究的目的:
- 在慢性病的老鼠模型中研究血管化和肠道功能障碍之间的双向关系.
- 确定炎症和尿性毒素生成是否介导了VC和肠道变化之间的联系.
- 在这种情况下,探索粘液产生和NLRP6炎症酶的作用.
主要方法:
- 采用了分总5/6切除术 (SNx) 的小鼠模型,并采用了促化饮食来诱导尿路血管化 (SNx-VC).
- 使用·科萨染色评估CKD和VC.
- 测量了肠道屏障的完整性,粘液的产生 (蓝,Mucin 2),炎症标记物,紧接蛋白,以及NLRP6,Ly96,Sod1和Tlr2.2的基因/蛋白质表达.
主要成果:
- 在SNx-VC小鼠中,已证实CKD和VC,肠道源的尿性毒素氧硫酸 (IS) 含量较高.
- 结肠和大肠粘液产量的显著减少被观察到,与血管化的严重程度相关.
- 虽然炎症和紧结蛋白保持不变,但SNx-VC大鼠的结肠中Nlrp6mRNA水平下降,以及其他炎症相关基因的改变表达.
结论:
- 减少肠道粘液产生,减少Nlrp6mRNA,增加硫酸和CKD中尿性血管化之间存在强烈的联系.
- 肠道粘液层的变化可能会促进尿素毒素的产生,从而加剧CKD中的血管化.
- 改善肠道粘液屏障功能,为治疗慢性病患者的尿性VC提供了潜在的治疗途径.
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