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  • Title: Association Between Fibulin-1 and Aortic Augmentation Index in Male Patients with Peripheral Arterial Disease.
    Author: Paapstel K, Zilmer M, Eha J, Tootsi K, Piir A, Kals J.
    Journal: Eur J Vasc Endovasc Surg; 2016 Jan; 51(1):76-82. PubMed ID: 26507503.
    Abstract:
    BACKGROUND: Fibulin-1 (FBLN-1), a newly identified biomarker for vascular stiffness in type 2 diabetes, may participate in the pathophysiological processes leading to progression of arterial stiffness in atherosclerosis. In the present study, the relationship between FBLN-1 and arterial stiffness was examined in patients with atherosclerosis and in healthy subjects. METHODS: Thirty-eight patients with peripheral arterial disease (PAD) (age 62.4 ± 9.0 years), 38 patients with coronary artery disease (CAD) (age 64.0 ± 9.5 years), and 30 apparently healthy controls (age 61.1 ± 6.4 years) were studied. Serum FBLN-1, oxidized low density lipoprotein (oxLDL), resistin and plasminogen activator inhibitor-1 (PAI-1) levels were measured using the enzyme linked immunosorbent assay method. The technique of applanation tonometry was used for non-invasive pulse wave analysis and pulse wave velocity assessments. RESULTS: The levels of FBLN-1 (PAD = 9.4 [4.9-17.8] vs. CAD = 7.1 [4.8-11.8] vs. controls = 5.6 [4.1-8.4] μg/mL; p = .005), carotid-femoral pulse wave velocity (cf-PWV) (9.8 ± 2.2 vs. 9.5 ± 2.2 vs. 8.3 ± 2.2 m/s; p = .023) and the heart rate corrected augmentation index (AIx@75) (29.4 ± 7.2 vs. 19.2 ± 7.2 vs. 15.4 ± 7.1%; p < .001), differed among the three groups. A correlation between FBLN-1 and AIx@75 was observed only in patients with PAD (rho = 0.37, p = .021). The relationship retained statistical significance in a multiple regression model after adjustment for potential confounders. CONCLUSIONS: An independent association was demonstrated between serum FBLN-1 and AIx@75 in the PAD group. Thus, the findings suggest that FBLN-1 may play a role in arterial stiffening in patients with atherosclerosis.
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