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    Galectin-3: A biochemical marker to detect paroxysmal atrial fibrillation?
    (Canadian Soc Clinical Investigation, 2016) Selcoki, Yusuf; Aydin, H. Ibrahim; Celik, Tugrul H.; Isleyen, Ahmet; Erayman, Ali; Demircelik, M. Bora; Demirin, Hilmi
    Purpose: Atrial fibrillation (AF) is the most common form of arrhythmia. AF leads to electrical remodelling and fibrosis of the atria; however, the mechanism(s) remain poorly understood. Galectin-3 is a potential mediator of cardiac fibrosis. The present study aimed to examine the relationship between serum galectin-3 levels and paroxysmal AF. Methods: Forty-six patients with paroxysmal AF and preserved left ventricular systolic function, and 38 age-and gender-matched control subjects, were involved in the study. Serum galectin-3 levels were analyzed with an enzyme-linked immunosorbent assay (ELISA). Results: Serum galectin-3 levels (median 1.38 ng/mL; 1.21 ng/mL-1.87 ng/mL; p < 0.001) were significantly elevated in patients with paroxysmal AF compared with the control. Left atrial diameter was significantly higher in patients with paroxysmal AF (41.2 +/- 3.0 mm vs. 39.6 +/- 3.3 mm). Left atrial diameter was found to be significantly correlated with serum galectin-3 levels in patients with paroxysmal AF (r= 0.378, p = 0.001). Conclusion: Serum galectin-3 levels are significantly elevated and significantly correlated with left atrial diameter in patients with paroxysmal AF.
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    Usefulness of Preprocedural Serum Uric Acid Level to Predict Restenosis of Bare Metal Stents
    (Excerpta Medica Inc-Elsevier Science Inc, 2014) Turak, Osman; Canpolat, Ugur; Ozcan, Firat; Mendi, Mehmet Ali; Oksuz, Fatih; Isleyen, Ahmet; Gurel, Ozgul Malcok
    Serum uric acid (SUA) level is known as a significant predictor for cardiovascular diseases, partly through increased inflammatory response and smooth muscle cell proliferation. Inflammation and smooth muscle cells play a crucial role in the pathogenesis of in-stent restenosis (ISR). However, the relation between SUA and ISR has not been studied. The aim of the present study was to investigate the predictive value of preprocedural SUA on the development of ISR in patients who undergo coronary bare-metal stent implantation. Clinical, biochemical, and angiographic data from 708 consecutive patients (mean age 60.3 +/- 9.3 years, 71% men) who had undergone bare-metal stent implantation and additional control coronary angiography for stable or unstable angina pectoris were analyzed. Patients were divided into tertiles on the basis of preprocedural SUA levels. Stent restenosis was observed in 54 patients (23%) in the lowest tertile, in 79 (34%) in the middle tertile, and in 109 (46%) in the highest tertile (p < 0.001). Using multiple logistic regression analysis, diabetes mellitus, smoking, high-density lipoprotein cholesterol, stent length, C-reactive protein level, and preprocedural SUA level emerged as independent predictors of ISR. On receiver-operating characteristics curve analysis, SUA level >5.5 mg/dl had 75% sensitivity and 71% specificity (area under the curve 0.784, p < 0.001) in predicting ISR. In conclusion, higher preprocedural SUA is a powerful and independent predictor of bare-metal stent restenosis in patients with stable and unstable angina pectoris. (C) 2014 Elsevier Inc. All rights reserved.