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Default Cu and Fe metallic ions-mediated oxidation of low-density lipoproteins studied by NMR

Cu and Fe metallic ions-mediated oxidation of low-density lipoproteins studied by NMR, TEM and Z-scan technique.

Related Articles Cu and Fe metallic ions-mediated oxidation of low-density lipoproteins studied by NMR, TEM and Z-scan technique.

Chem Phys Lipids. 2010 Jun;163(6):545-51

Authors: Gůmez SL, Monteiro AM, Rabbani SR, Bloise AC, Carneiro SM, Alves S, Gidlund M, Abdalla DS, Neto AM

In this work we report on a study of the morphological changes of LDL induced in vitro by metallic ions (Cu(2+) and Fe(3+)). These modifications were characterized by transmission electron microscopy, nuclear magnetic resonance and the Z-scan technique. The degree of oxidative modification of LDL was determined by the TBARS and lipid hydroperoxides assays. It is shown that distinct pathways for modifying lipoproteins lead to different morphological transformations of the particles characterized by changes in size and/or shape of the resulting particles, and by the tendency to induce aggregation of the particles. There were no evidence of melting of particles promoted by oxidative processes with Cu and Fe.

PMID: 20347728 [PubMed - indexed for MEDLINE]



Source: PubMed
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