ArticleClinical research in cardiology : official journal of the German Cardiac Society2026
Modulation of oxidation-related immune markers by lipid-lowering medications in individuals with elevated lipoprotein(a).
Article in Clinical research in cardiology : official journal of the German Cardiac Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundOxidative modification of apolipoprotein B-100 (apoB) containing particles and subsequent immune responses contribute to the pathogenesis of atherosclerosis. Circulating IgG and IgM apoB-containing immune complexes (apoB-IC) and autoantibodies to a malondialdehyde mimotope (anti-MDA-mimotope) serve as biomarkers of oxidative stress and immune activation in atherosclerotic cardiovascular disease. Elevated lipoprotein(a) [Lp(a)] is associated with increased oxidative burden and immune activation. PURPOSE: To investigate the effect of lipid-lowering medications on IgG and IgM apoB-IC and IgG and IgM autoantibodies to an MDA-mimotope in individuals with elevated lipoprotein(a) [Lp(a)] concentrations.
methodsIn this prospective study, patients (n = 70) with Lp(a) levels ≥ 75 nmol/L were assigned to 3 treatment regimens according to current guidelines: high-intensity statin monotherapy (n = 28), ezetimibe added to high-intensity statin (n = 31) and proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK9i) added to high-intensity statin plus ezetimibe (n = 11). IgG and IgM apoB-IC and IgG and IgM anti-MDA-mimotope were measured at baseline and 3 months after treatment initiation.
resultsPatients had a mean age of 51 ± 15 years and 40% were male. Significant reductions in IgG apoB-IC levels were observed following treatment with high-intensity statins, add-on ezetimibe and add-on PCSK9i (by 18.3%, 17.5% and 25.5%, respectively, all p < 0.05). No significant changes in IgM apoB-IC, or IgG and IgM anti-MDA-mimotope levels were observed in any treatment group.
conclusionsIn individuals with Lp(a) levels ≥ 75 nmol/L, high-intensity statins, add-on ezetimibe and add-on PCSK9i reduced IgG apoB-IC but did not affect IgM apoB-IC, or IgG and IgM anti-MDA-mimotope levels. The clinical significance of these findings warrants further investigation.
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