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    Association Between Resistin Level and Renal Function in Patients Undergoing Coronary Artery Bypass Graft Surgery
    (Bmj Publishing Group, 2012) Gungor, Hasan; Kirilmaz, Bahadir; Zorlu, Ali; Oguz, Emrah; Ayik, Mehmet Fatih; Kumak, Ferhat; Zoghi, Mehdi
    Aim: The purpose of this study was to evaluate the association between resistin levels and renal function in patients undergoing coronary artery bypass graft (CABG) surgery. Methods: Thirty-seven consecutive patients (mean +/- SD, age 60 +/- 10 years, 29 (78%) male) undergoing CABG surgery at our department were enrolled into our study. Blood samples were taken to examine quantities of resistin level and other blood parameters the day before surgery. The patients were categorized into 2 groups: lower resistin level (group 1) or higher resistin level (group 2) according to the median value of 9 ng/mL. Results: Mean + SD resistin level, glomerular filtration rate (GFR), and urea and creatinine levels were 9.5 +/- 4.2 ng/mL, 78 +/- 25 mL/min per 1.73 m(2), 42 +/- 14 mg/dL, and 1.08 +/- 0.2 mg/dL, respectively. Resistin showed significant correlation with serum levels of urea (r = 0.448l P = 0.005), creatinine (r = 0.367; P = 0.026), inverse correlation with GFR (r = -0.398; P = 0.015), statin usage (r = -0.393; P = 0.016), and A-blocker usage (r = -0.365; P = 0.026). In the multivariate logistic regression model, only GFR (odds ratio, 0.960; 95 confidence interval, 0.928-0.993; P = 0.018) remained independently associated with higher resistin levels after adjustment of other potential confounders in patients undergoing CABG surgery. According to the receiver operating characteristics curve analysis, the optimal cutoff value of GFR to predict higher resistin levels was found as 91 mL/min or less per 1.73 m(2), with 100% sensitivity and 61.1% specificity. Conclusion: The present study demonstrated that a lower glomerular filtration rate was associated with higher circulating resistin levels, independent of coronary heart disease risk factors in patients undergoing CABG surgery.
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    Determining the Biogas Potential from Animal Manure in Canakkale and Creating an Electricity Generation Capacity Map
    (Int Journal Renewable Energy Research, 2025) Oguz, Emrah; Oguz, Yuksel
    In this study, the biogas production potential from animal manure in Canakkale was determined and the electrical energy production capacity of the province was determined. According to the 2021 cattle, small ruminant, and poultry numbers received from the Provincial Directorate of Agriculture and Forestry, the cattle, small ruminant, and poultry manure amounts of all districts were calculated. Then, the amount of biogas that could be produced was calculated based on this data digital maps of the province were created by calculating the equivalent electrical energy production values of all districts with the biogas energy potentials that can be obtained. It has been calculated that a total of 119,715,927.80 m(3) of biogas can be obtained annually throughout the province. The total annual equivalent electrical energy of this potential is 562,664.86 MWh. In line with the data obtained, it has been determined that Canakkale has a 70 MW biogas power plant potential.