Abstract 12822: Increased Expression and Serum Levels of Lectin-Like Oxidized Low-Density Lipoprotein Receptor-1 in Patients With Aortic Valve Stenosis
2014
Background: The development of aortic valve stenosis (AS) involves multiple events, including inflammation and lipid deposition and oxidation. Circulating levels of soluble lectin-like oxidized low-density lipoprotein receptor-1 (sLOX-1) play an important role in the development and progression of atherosclerosis. The aims of this study were to investigate the serum levels of sLOX-1 in patients with AS and also examine the expression of LOX-1 immunohistochemically in aortic valve specimens from these patients. Methods: Serum sLOX-1 levels were measured in patients with AS (n=128), stable angina pectoris (SAP, n=343) and in 53 control subjects using a sandwich ELISA method. Frozen aortic valve samples were also obtained surgically from a cohort of 20 AS patients. In addition, frozen aortic valve specimens were obtained at autopsy from individuals who died of non-cardiovascular causes (n = 11, mean age 68 yr) as a reference. Immunostaining of the samples was performed using antibodies against smooth muscle ...
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