Abstract 178: Metabolomic Approach by 1H NMR Spectroscopy of Plasma for the Assessment of heart-function in Patients with Chronic Heart Failure
Chronic heart failure (CHF) is a progressive clinical syndrome characterized by inability of the heart to adequately pump blood to meet metabolic demands of the body, and assessment of heart function in chronic heart failure patients is needed to make therapeutic decisions. New York Heart Association( NYHA) classification is usually performed to evaluate heart-function of CHF patients. Nevertheless, this does not take into account metabolic perturbations produced by heart-function impairment. In contrast, metabolomics can investigate many metabolic perturbations within biological systems.The purpose of this study was to assess whether metabolomic profiles of plasma, obtained by proton NMR spectroscopy from CHF patients, are affected by the severity of heart-function impairment. An orthogonal projection to latent-structure analysis was performed to compare NMR spectra of 49 chronic heart failure patients according to NYHA classification.The statistical model obtained showed a good explained variance (R2X = 0.13 and R2Y = 0.92) and a good predictability (Q2Y = 0.68). Metabolomic profiles showed significant differences regarding various metabolites depending of severity of heart-function impairment: levels of high-density lipoprotein, glycol-protein, glutamine, glutamate, were significantly higher in patients with mild CHF compared to severe CHF. Other metabolites such as lactate and amino acids were significantly higher in patients with severe CHF than mild CHF. Our conclusion is that metabolomic NMR analysis provides new insights into metabolic processes related to the severity of heart function impairment in chronic heart failure.
- © 2013 by American Heart Association, Inc.