Association of kidney fibrosis with urinary peptides: A path towards non-invasive liquid biopsies?

Chronic kidney disease (CKD) is a prevalent cause of morbidity and mortality worldwide. A hallmark of CKD progression is renal fibrosis characterized by excessive accumulation of extracelular matrix (ECM) proteins. In this study, we aimed to investigate the correlation of the es_ESurinary proteome c...

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Detalles Bibliográficos
Autores: Magalhães, Pedro, Pejchinovski, Martin, Markoska, Katerina, Banasik, Miroslaw, Klinger, Marian, Švec-Billá, Dominika, Rychlik, Ivan, Rroji, Merita, Restivo, Arianna, Bob, Flaviu, Schiller, Adalbert, Ortiz Arduán, Alberto, Pérez Gómez, María Vanessa, Cannata Ortiz, Pablo Javier, Sánchez Niño, María Dolores, Naumovic, Radomir, Naumovic, Voin, Polenakovic, Momir, Mullen, William, Vlahou, Antonia, Zürbig, Petra, Pape, Lars, Ferrario, Franco, Denis, Colette, Spasovski, Goce, Mischak, Harald, Schanstra, Joost P.
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/681139
Acceso en línea:http://hdl.handle.net/10486/681139
https://dx.doi.org/10.1038/s41598-017-17083-w
Access Level:acceso abierto
Palabra clave:Kidney fibrosis
Urinary proteome
CKD273
Peptides
Medicina
Descripción
Sumario:Chronic kidney disease (CKD) is a prevalent cause of morbidity and mortality worldwide. A hallmark of CKD progression is renal fibrosis characterized by excessive accumulation of extracelular matrix (ECM) proteins. In this study, we aimed to investigate the correlation of the es_ESurinary proteome classifier CKD273 and individual urinary peptides with the degree of fibrosis. In total, 42 kidney biopsies and urine samples were examined. The percentage of fibrosis per total tissue area was assessed in Masson trichrome stained kidney tissues. The urinary proteome was analysed by capillary electrophoresis coupled to mass spectrometry. CKD273 displayed a significant and positive correlation with the degree of fibrosis (Rho = 0.430, P = 0.0044), while the routinely used parameters (glomerular filtration rate, urine albumin-to-creatinine ratio and urine protein-to-creatinine ratio) did not (Rho = −0.222; −0.137; −0.070 and P = 0.16; 0.39; 0.66, respectively). We identified seven fibrosis-associated peptides displaying a significant and negative correlation with the degree of fibrosis. All peptides were collagen fragments, suggesting that these may be causally related to the observed accumulation of ECM in the kidneys. CKD273 and specific peptides are significantly associated with kidney fibrosis; such an association could not be detected by other biomarkers for CKD. These non-invasive fibrosis-related biomarkers can potentially be implemented in future trials

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