Eray Eroglu1, Hilmi U Unal2, Aydin Guclu3, Ismail Kocyigit1, Murat Karaman2, Mutlu Saglam4, Mustafa Gezer2, Ahmet Tas5, Gokmen Zararsiz6, Tayfun Eyileten2, İbrahim Aydin5, Yusuf Oguz2, Ozkan Gungor7, Mahmut I Yilmaz2. 1. Department of Nephrology, Erciyes University School of Medicine, Kayseri, Turkey. 2. Department of Nephrology, Gulhane School of Medicine, Ankara, Turkey. 3. Department of Nephrology, Ahi Evran University, Training and Research Hospital, Kirsehir, Turkey. 4. Department of Radiology, Gulhane School of Medicine, Ankara, Turkey. 5. Department of Biochemistry, Gulhane School of Medicine, Ankara, Turkey. 6. Department of Biostatistics, Erciyes University School of Medicine, Kayseri, Turkey. 7. Department of Nephrology, Sutcu Imam University School of Medicine, Kahramanmaras, Turkey.
Abstract
BACKGROUND: Profilin-1 is a ubiquitous, actin-binding protein that plays an important role in the regulation of actin polymerization and cytoskeleton remodelling and contributes to vascular dysfunction. We conducted this study to investigate the association of serum profilin-1 levels with fatal and nonfatal CVE in a cohort of patients with stage 1-5 CKD. MATERIALS AND METHODS: Serum concentrations of profilin-1 levels were determined by enzyme-linked immunosorbent assay. Endothelium-dependent vasodilatation (flow-mediated dilatation [FMD]) and endothelium-independent vasodilatation (nitroglycerine-mediated dilatation [NMD]) of the brachial artery were assessed noninvasively, using high-resolution ultrasound. RESULTS: Both fatal and nonfatal CVE were significantly higher in patients with high profilin-1 levels. Kaplan-Meier survival curves showed that patients with profilin-1 below the median value (114 pg/mL) had higher cumulative survival compared with patients who had profilin-1 levels above the median value (log-rank test, P < .001). CONCLUSIONS: This is the first study that demonstrates the serum profilin-1 is independently associated with endothelial dysfunction, cardiovascular events and survival in patients with CKD.
BACKGROUND:Profilin-1 is a ubiquitous, actin-binding protein that plays an important role in the regulation of actin polymerization and cytoskeleton remodelling and contributes to vascular dysfunction. We conducted this study to investigate the association of serum profilin-1 levels with fatal and nonfatal CVE in a cohort of patients with stage 1-5 CKD. MATERIALS AND METHODS: Serum concentrations of profilin-1 levels were determined by enzyme-linked immunosorbent assay. Endothelium-dependent vasodilatation (flow-mediated dilatation [FMD]) and endothelium-independent vasodilatation (nitroglycerine-mediated dilatation [NMD]) of the brachial artery were assessed noninvasively, using high-resolution ultrasound. RESULTS: Both fatal and nonfatal CVE were significantly higher in patients with high profilin-1 levels. Kaplan-Meier survival curves showed that patients with profilin-1 below the median value (114 pg/mL) had higher cumulative survival compared with patients who had profilin-1 levels above the median value (log-rank test, P < .001). CONCLUSIONS: This is the first study that demonstrates the serum profilin-1 is independently associated with endothelial dysfunction, cardiovascular events and survival in patients with CKD.