Estimation of Proximal Tubular Function by Stimulation of Organic Anion and Cation Transporters.

IF 9.4 1区 医学 Q1 UROLOGY & NEPHROLOGY Journal of The American Society of Nephrology Pub Date : 2025-03-24 DOI:10.1681/ASN.0000000686
Magdalena Madero, Ana Karen Fernández-Yepez, Aldo Arturo Reséndiz-Albor, José Alberto Rivera Chávez, Jesse C Seegmiller, Bernardo Rodriguez-Iturbe
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通过刺激有机阴离子和阳离子转运体来估计近端管功能。
背景:肾小管病理生理在慢性肾脏疾病(CKD)的进展中起着关键作用。外源性刺激近端小管有机阴离子(OAT)和阳离子(OCT)转运体可以用来评估它们的反应,而不依赖于肾小球滤过率(GFR),以及它们与蛋白结合溶质清除和其他小管功能生物标志物的关系。方法:对9名健康志愿者和22名按GFR划分为KDIGO分期的CKD患者进行原理验证研究。在水致利尿的4小时内,每小时研究一次,分别摄入5g肌酐和静脉注射1-1.5mg/kg呋塞米,作为刺激OCTs和OATs的手段。GFR测定(碘己醇尿清除率)在研究的第2 ~ 3小时和第3 ~ 4小时进行。第1小时检测硫酸吲哚酚、硫酸甲酚和尿小管功能生物标志物。结果:研究期间GFR稳定。小管肌酐(TScr)和尿速胺(TSfuro)分泌在第1小时达到最大值。GFR的KDIGO类别广泛分布在小管分泌反应的范围内。有机阴离子转运体1小时刺激反应与血清硫酸吲哚酚(r=-0.59, p=0.005)和硫酸甲酚(r=-0.59, p=0.004)水平呈负相关。尿表皮生长因子、氨、α 1微球蛋白和尿调素与TScr和TSfuro的升高相关。摄入5g肌酐后1小时内尿肌酐排泄率与TScr密切相关(r=0.836)。结论:相似gfr患者近端小管的OATs和OCTs功能差异较大,其反应受损与蛋白结合尿毒症溶质潴留和尿小管功能障碍生物标志物有关。OCTs的疗效可通过摄入5g肌酐后1小时尿肌酐排泄量来评估。
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来源期刊
Journal of The American Society of Nephrology
Journal of The American Society of Nephrology 医学-泌尿学与肾脏学
CiteScore
22.40
自引率
2.90%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the American Society of Nephrology (JASN) stands as the preeminent kidney journal globally, offering an exceptional synthesis of cutting-edge basic research, clinical epidemiology, meta-analysis, and relevant editorial content. Representing a comprehensive resource, JASN encompasses clinical research, editorials distilling key findings, perspectives, and timely reviews. Editorials are skillfully crafted to elucidate the essential insights of the parent article, while JASN actively encourages the submission of Letters to the Editor discussing recently published articles. The reviews featured in JASN are consistently erudite and comprehensive, providing thorough coverage of respective fields. Since its inception in July 1990, JASN has been a monthly publication. JASN publishes original research reports and editorial content across a spectrum of basic and clinical science relevant to the broad discipline of nephrology. Topics covered include renal cell biology, developmental biology of the kidney, genetics of kidney disease, cell and transport physiology, hemodynamics and vascular regulation, mechanisms of blood pressure regulation, renal immunology, kidney pathology, pathophysiology of kidney diseases, nephrolithiasis, clinical nephrology (including dialysis and transplantation), and hypertension. Furthermore, articles addressing healthcare policy and care delivery issues relevant to nephrology are warmly welcomed.
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