title: The significance of autoantibodies against oxidatively modified low-density lipoprotein (LDL) in patients with psoriasis.
abstract: Psoriasis is associated with changes in plasma lipid and lipoproteins, which may play a role in the development of occlusive vascular disease. The oxidation of low-density lipoprotein (LDL) is considered a key event in the development and progression of atherosclerosis. Autoantibodies against oxidized LDL (auAb-oxLDL) may contribute to understanding the relationship between oxidative processes and development of atherosclerosis. Thirty-three patients with psoriasis and 30 matched control subjects were investigated. LDL oxidation was evaluated as the presence of autoantibodies against LDL oxidatively modified with Cu++, by an ELISA system in the patients and control sera. AuAb-ox LDL levels of the patients were found to be significantly increased compared with a control group. 42% of the patients and 3.3% of the control subjects had higher auAb-ox LDL levels than the cut-off point (352 mU/ml). The levels of auAb-ox LDL were found to be correlated with PASI score (r = 0.67, p < 0.01). Also, The antibody level was found to be correlated with polymorphonuclear elastase and alpha-1 antitrypsin levels (r = 0.58, p < 0.05; r = 0.51, p < 0.05, respectively). It was concluded that increased levels of auAb-oxLDL in the psoriatic patients may be a consequence of the interaction between imbalance of oxidant-antioxidant system and lipoproteins, and the measurement of auAb-oxLDL in the patients may mirror in vivo occurrence of oxidative processes.
authors.affiliation: Department of Biochemistry, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Orem
authors.forename: G
authors.initials: G
authors.lastname: Cimşit
authors.forename: O
authors.initials: O
authors.lastname: Değer
authors.forename: C
authors.initials: C
authors.lastname: Orem
authors.forename: B
authors.initials: B
authors.lastname: Vanizor
mesh_terms: D000209:Acute-Phase Proteins / Q000378:metabolism; D000293:Adolescent; D000328:Adult; D001323:Autoantibodies / Q000097:blood*; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood; D008074:Lipoproteins / Q000097:blood; D008077:Lipoproteins, LDL / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D010084:Oxidation-Reduction; D011565:Psoriasis / Q000276:immunology*
chemical_list: D000209:Acute-Phase Proteins; D001323:Autoantibodies; D008055:Lipids; D008074:Lipoproteins; D008077:Lipoproteins, LDL