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Saudi Journal of Kidney Diseases and Transplantation
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ORIGINAL ARTICLE Table of Contents   
Year : 2017  |  Volume : 28  |  Issue : 1  |  Page : 51-60
Relation of fibroblast growth factor-23 and cardiovascular calcification in end-stage kidney disease patients on regular hemodialysis

1 Department of Internal Medicine and Nephrology, Faculty of Medicine, Al Azhar University, Cairo, Egypt
2 Department of Nephrology and Internal Medicine, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
3 Department of Clinical Pathology, Faculty of Medicine, Al Azhar University, Cairo, Egypt

Correspondence Address:
Osama Ashry Ahmed Gheith
Department of Nephrology and Internal Medicine, Urology and Nephrology Center, Mansoura University, Mansoura
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1319-2442.198127

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More than half of deaths in end-stage kidney disease (ESKD) patients are due to cardiovascular disease. Elevated fibroblast growth factor 23 (FGF-23) was found to be associated with mortality in hemodialysis (HD) patients and correlates with peripheral calcification. Aortic calcification is associated with coronary artery calcification. Both aortic and peripheral vascular calcifications were associated with mortality in chronic kidney disease. We aimed to investigate the relation between intact FGF-23 and cardiovascular calcification in patients with ESKD who were maintained on regular HD. Sixty clinically stable ESKD patients on regular HD were enrolled into this cross-sectional study. They were evaluated by basal abdominal X-ray. They were divided into two groups: (Group A, n = 30), patients with abdominal aortic calcification who underwent multislice computerized tomography scan to measure coronary artery calcification score; and (Group B, n = 30), patients without abdominal aortic calcification. All of them were evaluated by lipid profile and dialysis adequacy parameters. Fifty percent of patients had vascular calcification. We found a significant positive correlation between age and intact FGF-23; significant positive correlations between age, body mass index, duration of HD, and abdominal aortic calcification score. FGF-23 of all patients was elevated and had significant positive correlation with aortic and coronary calcifications in addition to lipid profile, left ventricular mass index (LVMI), and inflammatory markers. Plasma intact FGF-23 was elevated in nondiabetic ESKD patients, and vascular calcification was prevalent in such group of patients with many traditional and nontraditional risk factors. Possibly through its disturbing effects on minerals and parathyroid hormone, FGF-23 might indirectly affect vascular calcification. LVMI was higher in patients with vascular calcification and correlated positively with it.

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