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ORIGINAL ARTICLEFibulin Levels in Autosomal Dominant Polycystic Kidney Disease and Its Relationship to Arterial Stiffness by A. Inci, O. Akin, HY. Ellidag, E. Eren, S. Dolu, F. Sari

Background: The objective of the present study was to evaluate fibulin 1 levels in different stages of patients with autosomal dominant polycystic kidney disease (ADPKD) and investigate possible connections between fibulin-1 and arterial stiffness.
Methods: For this cross-sectional study, we included 74 patients with ADPKD (mean age, 50.92 ± 15.70 years) and 32 healthy controls (mean age, 49.53 ± 7.32 years). Patients with ADPKD were classified based on CKD epidemiology collaboration (CKD-EPI) equation assessments of estimated glomerular filtration rate (eGFR). Blood levels of fibulin 1 and creatinine levels were analyzed. We measured brachial artery PWV (baPWV), augmentation index (AIx), and pulse pressure (PP) for the assessment of arterial stiffness and systolic and diastolic blood pressures (SBP and DBP, respectively).
Results: Fibulin 1 was significantly higher in the patient group (p < 0.001). SBP, DBP, MAP, PP, and baPWV levels were also significantly higher in the patient group. A statistically significant positive correlation was found between fibulin 1 and creatinine (r = 0.377, p = 0.001). No significant correlation was found between the fibulin 1 levels and age, SBP, DBP, MAP, baPWV, and AIx.
Conclusions: Plasma concentrations of fibulin 1 increased in patients with ADPKD. Arterial stiffness measured by baPWV increased in patients with ADPKD, but it was not related to fibulin 1 levels.

DOI: 10.7754/Clin.Lab.2017.170617