Autoantibody titers against OxLDL are correlated with Achilles tendon thickness in patients with familial hypercholesterolemia

 
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Autoantibody titers against OxLDL are correlated with Achilles tendon thickness in patients with familial hypercholesterolemia (EN)

Tsouli, S. G. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Tsouli, S. G. (EN)

Achilles tendon xanthomas are associated with increased cardiovascular risk in patients with familial hypercholesterolemia (FH). Oxidized low density lipoprotein (OxLDL), the antibodies against OxLDL, and the LDL-associated phospholipase A(2) (Lp-PLA(2)) may play important roles in atherogenesis. We investigated the possible association between plasma levels of OxLDL, Lp-PLA(2) activity, and autoantibody titers against various types of mildly OxLDL with Achilles tendon thickness (ATT). ATT was determined by sonography in 80 unrelated heterozygous FH patients. Three different types of mildly OxLDL were prepared: OxLDL(L), OxLDL(P), and OxLDL(D), at the end of the lag, propagation, and decomposition phases of oxidation, respectively. Similar types of OxLDL were also prepared after inactivation of the LDL-associated Lp-PLA(2). These types were denoted OxLDL(-)(L), OxLDL(-)(P), and OxLDL(-)(D). FH patients exhibited significantly higher plasma OxLDL levels and serum IgG titers against OxLDLP and OxLDLD compared with 40 normolipidemic apparently healthy controls. ATT values were positively correlated with autoantibody titers against OxLDLP and OxLDLD; however, in multiple regression analysis, ATT was independently associated only with the autoantibody titers against OxLDLD. We conclude that the IgG autoantibody titers against OxLDLD but not OxLDL or Lp-PLA(2) may play an important role in the pathogenesis of Achilles tendon xanthomas in FH patients. (EN)

antibody (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Journal of Lipid Research (EN)

Αγγλική γλώσσα

2006

<Go to ISI>://000240847600011

American Society for Biochemistry and Molecular Biology, Inc. (EN)



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