阿米洛里德降低了在淋巴细胞蛋白尿症中的尿素酶/血原驱动的内补充激活
Gustaf L Isaksson1,2, Gitte R Hinrichs1,2, Henrik Andersen1
1Department of Molecular Medicine-Cardiovascular and Renal Research, University of Southern Denmark, Odense, Denmark.
Journal of the American Society of Nephrology : JASN
|January 23, 2024
概括
蛋白尿症通过泌尿酸酶类型的血原激活剂 (uPA) - 血级联激活脏中的补充物,产生炎症性厌氧毒素. 阿米洛里德和抗-uPA抗体减少了这种补体激活,这表明脏疾病的新治疗标.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 蛋白尿与管管炎症和渐进性损伤有关.
- 在蛋白尿中,异常过的等离子体被尿素酶类型的等离子体激活剂 (uPA) 激活.
- 假设是等离子体激活管状液体中的补充物,产生过敏毒素,而阿米洛里德抑制了这一过程.
研究的目的:
- 为了调查uPA-plasminogen级联在蛋白尿期间在管状液体内的补充激活中的作用.
- 为了确定阿米洛里德是否可以在体外和体内减弱这种补充激活.
- 探索针对这一通路进行脏保护的潜力.
主要方法:
- 在体外/体外研究使用纯化的补充因子,等离子素和尿酶与人体尿液.
- 从蛋白尿小鼠 (podocin KO) 和用阿米洛里德或抗-uPA抗体治疗的糖尿病脏病患者的尿液和血分析.
- 通过SDS-PAGE,免疫栓塞,ELISA评估补充剂激活,并测量尿液C3dg和sC5b-9.
主要成果:
- uPA和塑原在体外产生了C3a和C5a,这种C3a和C5a被阿米洛里德抑制.
- 在PODOCIN KO小鼠中,阿米洛里德和抗-uPA抗体减少了尿路C3a和C5a的分泌.
- 糖尿病脏病患者的阿米洛里德治疗显著降低了尿中的C3dg和sC5b-9水平.
结论:
- 在蛋白尿期间,uPA-等离子素级联在管状液中产生过敏毒素,激活补充.
- 这条通路将蛋白尿与管内炎症联系起来,对阿米洛里德敏感.
- 阿米洛里德可能会提供除了其已知的对自然尿和血压的影响之外的保护性益处.
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