Abstract

BackgroundHeart failure (HF) courses with chronic inflammatory process and alterations in lipid metabolism may aggravate the disease. The aim was to test whether the severity of HF, using brain natriuretic peptide (BNP) as a marker, is associated with alterations in functional aspects of HDL, such as lipid transfer, cholesterol ester transfer protein (CETP) and lecithin-cholesterol acyltransferase (LCAT) concentration.MethodsTwenty-five HF patients in NYHA class I/II and 23 in class III/IV were enrolled. Plasma lipids, apolipoproteins, CETP, LCAT, oxidized-LDL (oxLDL) and paraoxonase-1 (PON-1) activity were determined. Lipid transfer from a donor artificial nanoparticle to HDL was measured by in vitro assay.ResultsTotal cholesterol (p = 0.049), LDL-C (p = 0.023), non-HDL-C (p = 0.029) and CETP, that promotes lipid transfer among lipoproteins (p = 0.013), were lower in III/IV than in I/II group. Triglycerides, HDL-C, apo A-I, apo B, oxLDL, LCAT, enzyme that catalyzes serum cholesterol esterification, PON-1 activity, and in vitro transfers of cholesterol, triglycerides and phospholipids to HDL, important steps in HDL metabolism, were equal. IL-8 was higher in III/IV (p = 0.025), but TNFα, IL-1β, IL-6 and MCP-1 were equal. BNP was negatively correlated with CETP (r = − 0.294; p = 0.042) and positively correlated with IL-8 (r = 0.299; p = 0.039).ConclusionsOur results disclosed the relationship between CETP levels and HF severity, by comparing two HF groups and by correlation analysis. Lower CETP levels may be a marker of HF aggravation and possibly of worse prognosis. Practical applications of this initial finding, as the issue whether CETP could be protective against HF aggravation, should be explored in larger experimental and clinical studies.

Highlights

  • Heart failure (HF) courses with chronic inflammatory process and alterations in lipid metabolism may aggravate the disease

  • HF courses with a chronic inflammatory process and pro-inflammatory cytokines such as tumor necrosis factor α (TNFα), interleukin (IL) -1, IL-6 and IL-8 are increased in those patients [5]

  • The aim of this study was to test the hypothesis of whether the severity of HF is associated with alterations in parameters related with the HDL functional aspects, such as rates of lipid transfer to HDL, cholesterol ester transfer protein (CETP) and lecithin-cholesterol acyltransferase (LCAT) concentration, as well as the activity of paraoxonase-1 (PON-1), an anti-oxidant enzyme associated to the HDL fraction

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Summary

Introduction

Heart failure (HF) courses with chronic inflammatory process and alterations in lipid metabolism may aggravate the disease. The aim was to test whether the severity of HF, using brain natriuretic peptide (BNP) as a marker, is associated with alterations in functional aspects of HDL, such as lipid transfer, cholesterol ester transfer protein (CETP) and lecithin-cholesterol acyltransferase (LCAT) concentration. The metabolism of plasma lipoproteins is altered in HF and changes in LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C) and triglycerides have been often described [6,7,8,9]. Whether or not the intensity of changes in those inflammatory or lipid parameters are related with the severity or with the progression of HF has not yet been established

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