RT info:eu-repo/semantics/article T1 Prognostic significance of amino acid and biogenic amines profiling in chronic kidney disease A1 Gervasini, Guillermo A1 Verde Rello, Zoraida A1 González, Luz María A1 Chicharro, Celia A1 González Rodríguez, Laura A1 Fernández Araque, Ana María A1 Mota Zamorano, Sonia A1 Cancho, Bárbara A1 Pérez Hernández, Alberto A1 García López, Virginio A1 Bandrés, Fernando A1 Robles, Nicolás R. K1 Chronic kidney disease K1 Kidneys - Diseases K1 Riñones - Enfermedades K1 Nephrology K1 Amino acids K1 Biogenic amines K1 Aminas K1 Metabolites K1 Molecular biology K1 3205.06 Nefrología K1 2302.02 Aminoácidos K1 32 Ciencias Médicas K1 2302.21 Biología Molecular AB There is a pressing need for more precise biomarkers of chronic kidney disease (CKD). Plasma samples from 820 subjects [231 with CKD, 325 with end-stage kidney disease (ESKD) and 264 controls] were analyzed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) to determine a metabolic profile of 28 amino acids (AAs) and biogenic amines to test their value as markers of CKD risk and progression. The kynurenine/tryptophan ratio showed the strongest correlation with estimated glomerular filtration rate values (coefficient = −0.731, p < 0.0001). Models created with orthogonal partial least squares-discriminant analysis (OPLS-DA) containing the metabolic signature showed a high goodness of fit and predictability for controls/CKD (R2X:0.73:R2Y:0.92:Q2:0.92, p < 0.0001) and lower values for CKD/ESKD (R2X:0.56:R2Y:0.59:Q2:0.55, p < 0.0001). Based on generated VIP scores, the most relevant markers for segregating samples into control/CKD and CKD/ESKD groups were citrulline (1.63) and tryptophan (1.47), respectively. ROC analysis showed that the addition of the metabolic profile to a model including CKD classic risk factors improved the AUC from 86.7% (83.6–89.9) to 100% (100–100) for CKD risk (p < 0.0001) and from 63.0% (58.2–67.8) to 96.5% (95.3–97.8) for the risk of progression from CKD to ESKD (p < 0.0001). Plasma concentrations of AAs and related amines may be useful as diagnostic biomarkers of kidney disease, both for CKD risk and for progression of CKD patients to ESKD. PB MDPI SN 2227-9059 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/67005 UL https://uvadoc.uva.es/handle/10324/67005 LA eng NO Biomedicines, 2023, Vol. 11, Nº. 10, 2775 NO Producción Científica DS UVaDOC RD 22-nov-2024