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Niacin action in the atherogenic mixed dyslipidemia of metabolic syndrome: Insights from metabolic biomarker profiling and network analysis

Journal article
Authors Martin Adiels
M. J. Chapman
P. Robillard
M. Krempf
M. Laville
Jan Borén
Grp Niacin Study
Published in Journal of Clinical Lipidology
Volume 12
Issue 3
Pages 810-821
ISSN 1933-2874
Publication year 2018
Published at Wallenberg Laboratory
Institute of Medicine, Department of Public Health and Community Medicine, Health Metrics
Pages 810-821
Language en
Links dx.doi.org/10.1016/j.jacl.2018.03.0...
Keywords ER niacin, Mixed dyslipidemia, Metabolic syndrome, Triglyceride, LDL, HDL, Inflammation, Insulin resistance, Interleukin-6, Apolipoprotein CIII, extended-release niacin, type-2 diabetes-mellitus, apolipoprotein-a-i, nicotinic-acid, cardiovascular-disease, insulin-resistance, adipose-tissue, hepg2 cells, high-risk, adiponectin, Pharmacology & Pharmacy
Subject categories Clinical Medicine

Abstract

BACKGROUND: Niacin as an adjunct to statin treatment to reduce cardiovascular risk is questioned. OBJECTIVE: To evaluate interrelationships between the effects of niacin on mixed dyslipidemia and a spectrum of metabolic and inflammatory biomarkers. METHODS: Obese, nondiabetic, hypertriglyceridemic males (n = 19) with low high-density lipoprotein cholesterol levels received extended-release nicotinic acid for 8 weeks. Multiple biomarkers were measured using enzyme-linked immunosorbent assay, enzymatic/absorptiometric, or multiplex biochip assays. Treatment effects were determined for each variable and a differential correlation network created on the basis of univariate correlations between baseline and response to niacin treatment for all pairs of variables. RESULTS: Extended-release niacin treatment favoured normalization of plasma lipid and apolipoprotein profile. Plasma markers of inflammation, hepatic function, cellular adhesion and proliferation, and macrophage phenotype were attenuated; however, insulin resistance increased. Differential network analysis revealed that changes in triglycerides and high-density lipoprotein cholesterol were closely linked; equally, niacin mediated reductions in total cholesterol, apolipoprotein B, low-density lipoprotein cholesterol and lipoprotein(a) clustered together, as did homeostatic model assessment of insulin resistance, insulin, and interleukin-6 levels. Two clusters of inflammatory markers were identified, involving (1) intercellular adhesion molecule 1 and high-sensitive C-reactive protein and (2) soluble tumor necrosis factor receptors; and novel clusters involving matrix metallopeptidase 9 and apolipoprotein E, and adiponectin and cystatin C, respectively, were equally revealed. At lower stringency, lipid and insulin resistance clusters were linked; a C-reactive protein-centered cluster linked reduction in apolipoprotein Cu to intercellular adhesion molecule 1, gamma-glutamyltransferase, soluble tumor necrosis factor receptors, and E-selectin. CONCLUSION: A niacin-mediated trend to normalize atherogenic mixed dyslipidemia was intimately linked to attenuation of biomarkers of inflammation, cell adhesion, hepatic dysfunction and cell proliferation, but to enhanced insulin resistance and plasma homocysteine elevation. (C) 2018 National Lipid Association. Published by Elsevier Inc.

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