Akademska digitalna zbirka SLovenije - logo
ALL libraries (COBIB.SI union bibliographic/catalogue database)
  • Nitroxide reduction with ascorbic acid in spin labeled human plasma LDL and VLDL
    Kveder, Marina ...
    ǂThe ǂLDL and VLDL were spin labeled with Tempo which partitions both in aqueous and lipid phase. The ESR spectra measured in the equilibrium state as well as during the reduction of spin label with ... ascorbic acid. The kinetics of the concentration decay curves was parametrized with two exponentials. The theoretical simulation of the experimental spectra revealed a drastic linewidth narrowing in the VLDL samples exposed to the ascorbic acid. Since the transport properties of the specific monolayer are reflected in the observed reaction rates, the analysis of the fatty acid composition of phospholipids, triglycerides and cholesterol esters in LDL and VLDL was performed.It is concluded that different lipid packing at the surface of LDL and VLDL might be the consequence of different intermolecular forces between phospholipids and cholesterol. This finding was connected to the experimentaly detected different reaction kinetics in LDL and VLDL as well as their different susceptibility to the ESR linebroadening effects during the nonequilibrium conditions of the spin label reduction with ascorbic acid.
    Source: Chemistry and physics of lipids. - ISSN 0009-3084 (Vol. 85, 1997, str. 1-12)
    Type of material - article, component part ; adult, serious
    Publish date - 1997
    Language - english
    COBISS.SI-ID - 2417