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    Impact of N-acetylcysteine and Etodolac Treatment on Systolic and Diastolic Function in a Rat Model of Myocardial Steatosis Induced by High-Fat-Diet
    (Bentham Science Publ Ltd, 2014) Topal, Askin Ender; Akkoc, Hasan; Kelle, Ilker; Yilmaz, Sedat; Topal, Derya; Akkus, Murat
    Objectives: Obesity is a worldwide problem, leading to cardiomyopathy. Oxidative stress and inflammation have been reported to play significant roles in developing obesity cardiomyopathy. N-acetylcysteine is a glutathione prodrug that preserves liver against steatosis via constraining the production of reactive oxygen species. Etodolac is a nonsteroidal anti-inflammatory drug which has been demonstrated to protect liver against fibrosis. The aim of the present study was to evaluate and compare the effects of N-acetylcysteine and etodolac on impaired cardiac functions due to high-fat-diet (HFD) induced myocardial steatosis in rats. Material and Methods: Thirty-two male Sprague-Dawley rats were randomly divided into four groups. Control group was maintained on standard-rat-basic-diet (SD) for 20 weeks, while HFD was given to three study groups for 20 weeks. Then N-acetylcysteine was given to one of the study groups (HFD+NAC), and etodolac to another group (HFD+ETD) as a supplement for 4 weeks while all groups were continued on SD. At the end of the study periods, hearts were examined by Langendorff technique and rat livers were evaluated histologically. Results: HFD and HFD+ETD groups presented with significantly higher steatosis and fibrosis in liver compared to other groups. HFD+NAC preserved diastolic functions. Also HFD+NAC and HFD+ETD groups had significantly better systolic funtions than HFD group. Conclusions: Obesity is associated with diastolic dysfunction rather than systolic dysfunction. NAC may protect the heart against diastolic dysfunction due to obesity. NAC and etodolac treatment improve systolic function, even in the absence of systolic dysfunction.
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    Metformin HCl has curative effect on rebuilding of ventricular diastolic functions in high-fat-diet fed rats
    (Univ Karachi, 2017) Topal, Askin Ender; Kelle, Ilker; Akkoc, Hasan; Yilmaz, Sedat; Akkus, Murat
    Myocardial lipid accumulation due to diabetes and/or obesity plays a role in the progression of left ventricular diastolic dysfunction. Our aims were to exhibit the correlation between histopathologic stage of the liver and cardiac functions, and to evaluate the effects of metformin HC1 and rosiglitazone on myocardial functions. Thirty-two male Sprague-Dawley rats were divided into four groups to exhibit the correlation between histopathologic stage of the liver and cardiac functions and to determine whether metformin HC1 and rosiglitazone have effects on cardiac functions. For 20 weeks, one group was fed standard rat basic diet, whereas the other groups were on high-fat-diet. During the last 4 weeks, metformin HC1 was given to the third group, rosiglitazone to the fourth group. Histological evaluation of rat livers yielded significantly higher steatosis grade in high-fat-diet group and different fibrosis stages among groups. Also, there was significant correlation between diastolic functions and steatosis grade/fibrosis stage of rat liver. Electrophysiological study of hearts via Langendorff technique showed better coronary perfusion pressures and diastolic functions in standard -diet and metformin HC1 groups compared to other groups. Metformin HC1 improves LV diastolic dysfunction and coronary perfusion pressures.
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    Presentation of a case with C282Y mutation detected in HFE gene and research of HFE gene mutation frequency in patient's family
    (Walter De Gruyter Gmbh, 2014) Aydinol, Belkis; Yilmaz, Sedat; Genc, Sedat; Aydinol, Muhammet Mustafa
    Introduction: In this study we present a 55-year-old male patient (index case) who came to Dicle University and detected to have a homozygous C282Y mutation. His family and close relatives were also evaluated for the same reason as it is a rare mutation. Patient and Method: We have evaluated ALT, AST, Fe, TIBC, ferritin, %TS parameters of the patient, his family, and the close relatives. Hemochromatosis mutations in HFE gene detected with Real-Time-PCR. Result: 34 relatives of the patient were evaluated upon detection of homozygous C282Y mutation in index case. Ferritin level was 7134 ng/mL in index patient. Hepatomegaly and excess iron in liver was detected. It was learned that patient was discharged from internal diseases department by phlebotomy recommendation. In 17 relatives of the patient heterozygous C282Y mutation, in four of them heterozygous H63D mutation was detected. In two cases homozygouse C282Y mutation was detected. Conclusion: HFE gene mutation survey causing hereditary hemochromatosis is very rare in Turkey. For the first time, HFE gene mutations were encountered in a family living in Black Sea region and rare C282Y mutation was detected. In this study a second extended family focus with frequent HFE gene mutation was discovered in a village with high frequency of endogamy in Diyarbakir region. Necessary attempts were made especially for close surveillance of the two patients carrying C282Y homozygous gene mutation. We concluded that biochemical and genetic surveys and genetic consulting are important for public health.