کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5689887 | 1599178 | 2017 | 10 صفحه PDF | دانلود رایگان |
IntroductionSequencing peptides included in the urinary proteome identifies the parent proteins and may reveal mechanisms underlying the pathophysiology of chronic kidney disease.MethodsIn 805 randomly recruited Flemish individuals (50.8% women; mean age, 51.1 years), we determined the estimated glomerular filtration rate (eGFR) from serum creatinine using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. We categorized eGFR according to the National Kidney Foundation Kidney Disease Outcomes Quality Initiative guideline. We analyzed 74 sequenced urinary peptides with a detectable signal in more than 95% of participants. Follow-up measurements of eGFR were available in 597 participants.ResultsIn multivariable analyses, baseline eGFR decreased (P ⤠0.022) with urinary fragments of mucin-1 (standardized association size expressed in ml/min/1.73 m2, â4.48), collagen III (â2.84), and fibrinogen (â1.70) and was bi-directionally associated (P ⤠0.0006) with 2 urinary collagen I fragments (+2.28 and â3.20). The eGFR changes over 5 years (follow-up minus baseline) resulted in consistent estimates (P ⤠0.025) for mucin-1 (â1.85), collagen (â1.37 to 1.43) and fibrinogen (â1.45) fragments. Relative risk of having or progressing to eGFR <60 ml/min/1.73 m2 was associated with mucin-1. Partial least-squares analysis confirmed mucin-1 as the strongest urinary marker associated with decreased eGFR, with a score of 2.47 compared with 1.80 for a collagen I fragment as the next contender. Mucin-1 predicted eGFR decline to <60 ml/min/1.73 m2 over and above microalbuminuria (P = 0.011) and retained borderline significance (P = 0.05) when baseline eGFR was accounted for.DiscussionIn the general population, mucin-1 subunit α, an extracellular protein that is shed from renal tubular epithelium, is a novel biomarker associated with renal dysfunction.
Journal: Kidney International Reports - Volume 2, Issue 5, September 2017, Pages 811-820