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Mv, Bilenko; Av, Khil'chenko; Gg, Konovalova; Vz, Lankin

doi:10.1023/a:1026398319379

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Cited by 6 publications

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Macrophages actively accumulate malonyldialdehyde-modified but not enzymatically oxidized low density lipoprotein

2012

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In this study, we show that low density lipoproteins (LDL) from human blood plasma which was oxidized by animal C-15 lipoxygenase is taken up by cultivated human macrophages with the same effectiveness as with non-oxidized (native) LDL. At the same time malonyldialdehyde-modified LDL is captured by cultivated macrophages very actively. Based on differences in catabolism of LDL with various levels of primary and secondary products of free-radical oxidation, it was offered to discriminate between the oxidized LDL itself (lipohydroperoxide-rich LDL) and the LDL that was chemically modified by free-radical oxidation secondary products of aldehyde nature. In this respect, aldehyde-modified but not oxidized (lipohydroperoxide-containing) LDL is atherogenic.

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