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Item Evaluation of the effects of chronic biomass fuel smoke exposure on peripheral endothelial functions: an observational study(TURKISH SOC CARDIOLOGY, 2011-01-01) Buturak, Ali; Genc, Ahmet; Ulus, Ozden Sila; Duygu, Egemen; Okmen, Arda Sanli; Uyarel, HuseyinObjective: To evaluate the effect of chronic biomass fuel (BMF) smoke exposure on peripheral endothelial functions. Methods: Forty-seven healthy subjects who have been exposed to BMF smoke since birth (mean age 31.6 +/- 6.8 years, 21 male) were enrolled in the present cross-sectional observational study. The control group consisted of 32 healthy subjects (mean age 27.9 +/- 4.4 years, 11 male). The carotid intima media thickness (CIMT), flow associated dilatation (FAD \%) and endothelium independent vasodilatation (GTN \%) were assessed in all subjects. The carotid CIMT was defined as the distance between the leading edge of the lumen intima and the media adventitia interfaces. FAD \% was defined as the percentage change in the internal diameter of the brachial artery during reactive hyperemia related to the baseline. GTN \% was defined as the change in diameter in response to the application of 400 mu g of glyceril trinitrate relative to the baseline scan at the end of the fourth minute. Statistical analysis was performed using Student's t-test, Chi-square test and Spearman rank order correlation analysis. Results: The average exposure time of the subjects to biomass fuel smoke was 31.7 +/- 6.6 years. They have been exposed to dung inhalation products meanly 8.3 +/- 1.8 months in a year seasonally. The average daily exposure time was 15.7 +/- 3.3 hours. CIMT values of the two groups were not statistically different from each other (0.47 +/- 0.09 vs. 0.49 +/- 0.06 mm, p=0.138). However, a markedly reduced FAD \% was determined in the study group (5.06 +/- 4.95 vs. 10.7 +/- 4.64, p < 0.001). And GTN \% of the BMF exposed group was significantly lower than the control group (14.41 +/- 8.47 vs. 21.85 +/- 7.87, p < 0.001). Conclusion: FAD \% and GTN \% are markedly reduced in the individuals who have been exposed to BMF smoke inhalation products. Therefore, chronic BMF smoke exposure may be a risk factor for the development of endothelial dysfunction. (Anadolu Kardiyol Derg 2011Item Electron Microscopic Comparison of Radial Artery Grafts in Non-Diabetic and Diabetic Coronary Bypass Patients(WILEY, 2016-01-01) Gursoy, Mete; Guzel, Elif; Erturkuner, Pelin; Cakir, Idil; Duygu, Egemen; Gulcan, Fusun; Hokenek, A. FarukObjective: We compared electron microscopic histologic changes of the radial artery grafts in non-diabetic and diabetic patients. Methods: Thirty-six patients were divided into three groups according to their diabetic status (Group I had no diabetes mellitus {[}DM], Group II had type two DM and HbA1c levels were <7.5\%, and Group III had type 2 DM but HbA1c levels were >7.5\%). Distal parts of radial artery grafts were evaluated with scanning electron microscopy in a blind fashion by two histologists. Electron microscopic scores were compared among the groups. Results: Radial artery electron microscopic scores were significantly different between group 1, 2 and 1, 3 and 2, 3 (p = 0.028, p<0.001, and p<0.001). In linear regression analysis, duration of DM (p = 0.027) and fasting plasma glucose (p = 0.001) were found as independent risk factors for histologic changes of radial artery grafts. Conclusion: Duration of DM and poor glycemic control were found to be associated with radial artery electron microscopic changes.Item Clinical SYNTAX Score Can Predict Acute Kidney Injury following On-Pump but Not Off-Pump Coronary Artery Bypass Surgery(KARGER, 2015-01-01) Gursoy, Mete; Hokenek, Abdulkadir Faruk; Duygu, Egemen; Atay, Mehmet; Yavuz, AsumanBackground: The complexity of coronary artery disease is usually a neglected factor in risk stratification systems. We aimed to analyze the discriminative ability of the clinical SYNTAX score (CSS) for acute kidney injury (AKI) following on- and off-pump coronary artery surgery. Methods: A total of 193 patients were reviewed in this study. Patients were divided into two groups according to the surgical procedure (group I: off-pump coronary artery bypass grafting, n = 89Item A Giant Dissecting Aneurysm of Ascending Aorta Following Aortic Valve Replacement(HINDAWI LTD, 2014-01-01) Hokenek, Faruk; Gursoy, Mete; Gulcan, Fusun; Duygu, Egemen; Fener, MuratAscending aortic dissection and aneurysm are rare but life-threatening complications after aortic valve replacement. Preoperative evaluation of risk factors such as aortic diameter, structural features of aortic wall, and associated diseases may decrease complication rate. We herein present analysis of risk factors of proximal aortic events following aortic valve replacement based on patient with giant dissecting aneurysm who underwent modified Bentall procedure.