在多囊性病进展期间,肠道屏障功能下降
Randee Sedaka1, Caleb Lovelady1, Emily Hallit1
1Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Alabama, United States.
American journal of physiology. Renal physiology
|December 18, 2024
概括
在自身主导性多囊性病 (ADPKD) 中,损伤先于肠道问题. 早期阶段显示了更紧的肠道屏障,随着囊的进展,它变得漏水,影响水平衡.
科学领域:
- 脏病学和胃肠道学
- 分子生物学和遗传学分子生物学和遗传学
- 疾病的病原发生 疾病的病原发生
背景情况:
- 自体主导多囊性病 (ADPKD) 的特点是囊的发展,主要是由于PKD1突变.
- 在ADPKD中,特异性Pkd1损失导致上皮功能障碍和炎症.
- 在ADPKD中Pkd1损失对肠道的影响在很大程度上仍未被探索.
研究的目的:
- 调查Pkd1损失导致肠上皮质屏障功能障碍和炎症导致ADPKD细胞发生的假设.
- 在ADPKD小鼠模型中评估脏和肠道完整性,炎症和肠道功能.
主要方法:
- 使用可诱导,全球Pkd1淘汰赛 (Pkd1KO) 的小鼠和对照 littermates.
- 在疾病的早期 (3个月) 和晚期 (6个月) 阶段评估和肠道表型.
- 分析了脏和肠道完整性标志物,炎症,肠道运动性和便水分泌.
主要成果:
- 早期的Pkd1KO小鼠表现出轻微的脏囊,但肠道屏障更紧,没有炎症.
- 晚期Pkd1KO小鼠表现出严重的囊,功能受损,肠道屏障泄漏,炎症增加.
- 无论年龄,Pkd1KO小鼠的肠道运动性和便水分泌量都增加.
结论:
- 在ADPKD中,损伤先于肠损伤,随着囊发生的进展,肠道屏障变得受到损害.
- 渐进的肠壁功能障碍和改变的水/运输有助于ADPKD病理生理学.
- 外流失是ADPKD进展的重要因素,需要进行临床评估.
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