title: Autoantibodies against oxidized low-density lipoprotein and lipid profile in patients with chronic periaortitis: case-control study.
abstract: Chronic periaortitis is thought to result from an autoallergic reaction to oxidized low-density lipoprotein (OxLDL). No data exist on lipid profile and atherosclerotic biomarkers. We investigated circulating levels of OxLDL and of anti-OxLDL (aOxLDL) antibodies in patients with chronic periaortitis using the cross-sectional case-control study on 20 patients with chronic periaortitis. Patients were compared to 20 age- and sex-matched controls. aOxLDL antibodies were measured by ELISA and expressed as mean optical density values at 450 nm from duplicate measurements (OD(450)). aOxLDL antibody titers (median [interquartile range]) did not differ significantly between patients and controls (aOxLDL-IgM: 0.70 [0.24-1.08] vs. 0.54 [0.25-0.73] OD(450); aOxLDL-IgG: 0.59 [0.38-0.75] vs. 0.41[0.33-0.63]OD(450)). Female patients had higher aOxLDL-IgM levels than male patients (1.02 [0.46-1.38] vs. 0.29 [0.22-0.84] OD(450); P = 0.05). aOxLDL-IgM titers were lower in patients with cardiovascular disease (CVD) than in patients without CVD (0.22 [0.16-0.37] vs. 0.92 [0.70-1.30] OD(450); P = 0.003) and correlated positively with HDL-cholesterol (r = 0.47, 95% CI 0.02-0.69; P = 0.03) and inversely with diastolic blood pressure (r = -0.46, 95% CI -0.75 to -0.01; P = 0.03) and OxLDL/apoB ratio (r = -0.41, 95% CI -0.73 to 0.04; P = 0.06). No differences or associations were found between aOxLDL-IgG titers and other variables between or within patients and/or controls. In patients OxLDL levels correlated with smoking pack-years (r = 0.58, 95% CI 0.17-0.81; P = 0.007). Data suggest a differing innate immune response to OxLDL in patients with chronic periaortitis compared to controls. Whether this response is causally related to chronic periaortitis development remains to be clarified.
authors.affiliation: Department of Internal Medicine, Albert Schweitzer Hospital, P.O. Box 444, 3300 AK, Dordrecht, The Netherlands. e.f.h.vanbommel@asz.nl
authors.forename: E F H
authors.initials: EF
authors.lastname: van Bommel
authors.forename: L J H
authors.initials: LJ
authors.lastname: van Tits
authors.forename: E A
authors.initials: EA
authors.lastname: van den Berg
authors.forename: J
authors.initials: J
authors.lastname: Prins
authors.forename: A F H
authors.initials: AF
authors.lastname: Stalenhoef
mesh_terms: D000368:Aged; D000959:Antihypertensive Agents / Q000276:immunology / Q000627:therapeutic use; D001055:Apolipoproteins B / Q000097:blood / Q000276:immunology; D050197:Atherosclerosis / Q000097:blood / Q000276:immunology; D001323:Autoantibodies / Q000097:blood* / Q000276:immunology; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy / Q000276:immunology; D007074:Immunoglobulin G / Q000097:blood / Q000276:immunology; D007075:Immunoglobulin M / Q000097:blood / Q000276:immunology; D008055:Lipids / Q000097:blood*; D008077:Lipoproteins, LDL / Q000097:blood* / Q000276:immunology; D008297:Male; D008875:Middle Aged; D012185:Retroperitoneal Fibrosis / Q000097:blood* / Q000453:epidemiology / Q000276:immunology; D012907:Smoking / Q000097:blood / Q000453:epidemiology / Q000276:immunology; D016896:Treatment Outcome
chemical_list: D000959:Antihypertensive Agents; D001055:Apolipoproteins B; D001323:Autoantibodies; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D008055:Lipids; D008077:Lipoproteins, LDL; C099252:oxidized low density lipoprotein