Plasmalogens protect unsaturated lipids against UV-induced oxidation in monolayer

作者: Sandrine Morandat , Muriel Bortolato , Geneviève Anker , Alain Doutheau , Michel Lagarde

DOI: 10.1016/J.BBAMEM.2003.08.001

关键词:

摘要: Abstract Oxidative stress results from the attack by free radicals of several cellular targets (proteins, DNA and lipids). The cell equilibrium is a direct consequence pro-/antioxidant balance. In order to understand physiological processes involved in oxidative stress, we followed oxidation unsaturated lipids using biomimetic system: Langmuir monolayers. mode chosen was UV-irradiation lipid model polyunsaturated phospholipid: 1,2-dilinoleoyl-sn-glycero-3-phosphocholine (DLPC). monomolecular film technique used measure membrane rheology before after UV-irradiation. We showed that DLPC led molecular area surface elasticity modulus decrease attests apparition new species at air–water interface. antioxidant effect synthetic plasmalogen (1-O-(1′-(Z)-hexadecenyl)-2-O-oleoyl-sn-glycero-3-phosphocholine or PPLMOPE) tested on DLPC. Indeed, for about 25% mol PPLMOPE mixed DLPC/PPLMOPE monolayers, complete inhibition decreases observed our experimental conditions. Lower quantities delayed but did not prevent

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