Ender Semiz

Pamukkale University, Denisli, Denizli, Turkey

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Publications (36)87.93 Total impact

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    ABSTRACT: Introduction: The percutaneous catheterization of various arteries is used in visualization of coronary arteries. Aim: We aimed to determine whether arterial blood samples withdrawn from femoral arteries during standard Judkin's technique in patients evaluated with coronary angiography can also be used to determine some biochemical parameters. Material and methods: In 50 controls (25 males and 25 females) and 73 coronary artery disease (CAD) patients (10 females and 63 males) paraoxonase-1 (PON1) activity, total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), high-density lipoprotein cholesterol (HDL-C) and triglyceride (TG) levels were measured using colorimetric methods. Lipid peroxidation marker levels (conjugated dienes (CD) and thiobarbituric acid-reactive substances (TBARS)) were measured manually. Results: There was no difference in lipid and lipid peroxidation marker levels, PON1 activity and TC/HDL-C, LDL-C/HDL-C and PON1/HDL-C ratios between arterial and venous blood samples. LDL-C, CD and TBARS levels and TC/HDL-C and LDL-C/HDL-C ratios were significantly lower in both arterial and venous blood samples of controls compared with CAD patients. Paraoxonase-1 activity, HDL-C level and PON1/HDL-C ratio were higher in controls than CAD patients. On multiple logistic regression analysis, risk factors associated with CAD were found to be the levels of arterial CD, venous CD, arterial TBARS and arterial LDL-C/HDL-C ratios in CAD patients. Conclusions: Our study might indicate that arterial blood samples can also be used as well as venous samples to determine these parameters. On the other hand, elevated arterial lipid peroxides are associated with cardiovascular complications, presumably by decreasing PON1 activity.
    Postepy w Kardiologii Interwencyjnej / Advances in Interventional Cardiology 01/2012; 3(3):199-204. DOI:10.5114/pwki.2012.30399 · 0.15 Impact Factor
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    ABSTRACT: The levels of adiponectin, an anti-atherogenic protein, are decreased in patients with coronary artery disease. Syndrome X is associated with endothelial dysfunction, which is a key feature in the evolution of atherosclerosis. We sought to determine whether serum adiponectin levels are decreased in patients with syndrome X. Twenty-three syndrome X patients (14 men, 9 women) who presented with stable angina pectoris, had a positive non-invasive stress test or an abnormal myocardial perfusion scintigraphy single photon emission computed tomography (MPS SPECT) and a normal coronary angiogram, were included in our study, as were 17 asymptomatic healthy subjects (13 men, 4 women) with normal results from non-invasive stress testing. The serum adiponectin levels and lipid profiles of the patients and control subjects were determined with venous samples collected after a 12-hour fast. The results were analysed by a Mann Whitney U test. Mean age (54.1 +/- 11.8 y in patients and 59.8 +/- 9.6 y in control subjects, P > 0.05) and body mass index (28.0 +/- 3.3 in patients and 27.1 +/- 4.2 in control subjects, P > 0.05) did not differ between the two groups. Adiponectin levels in patients with syndrome X (1.5 +/- 1.1 microg/dl) were significantly lower than those in the control group (5.3 +/- 2.9 microg/dl, P < 0.0001). Serum total cholesterol (TCHOL), triglyceride (TG), LDL, and HDL-cholesterol levels did not differ between the two groups (P > 0.05). Serum adiponectin levels were lower in patients with syndrome X, and these low adiponectin concentrations may cause endothelial dysfunction. Thus, patients with a marked drop in adiponectin levels may be considered at high risk for future coronary events and may therefore benefit from additional pharmacological treatment.
    Acta cardiologica 04/2010; 65(2):217-20. DOI:10.2143/AC.65.2.2047056 · 0.65 Impact Factor

  • International Journal of Cardiology 04/2010; 140. DOI:10.1016/S0167-5273(10)70129-7 · 4.04 Impact Factor
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    ABSTRACT: This study aimed to investigate the relationship between endothelial nitric oxide synthase Glu(298)Asp gene polymorphism and hemorheological parameters. Red blood cell (RBC) deformability, aggregation were measured using an ectacytometry, whole blood, plasma viscosities were determined by a viscometer. Restriction fragment length polymorphism was used to detect polymorphism. Plasma nitrite, nitrate concentrations were determined by Griess method. The genotype distribution of the control group was as follows: 50 (67.5%) GG, 21 (28.4%) GT, 3 (4.1%) TT. A 48 (57.8%) of the patients with CAD had GG, 28 (33.7%) GT, 7 (8.5%) of them TT genotype. RBC aggregation index of CAD patients with G allele was higher and t(1/2) lower compared to controls carrying the same allele. The amplitude of RBC aggregation of healthy subjects with T allele, who are under increased cardiovascular risk was lower compared to control subjects with G allele. The results of this study indicate that, alterations in RBC aggregation seem to be a consequence of CAD, more than being a preexisting cause. Additionally, some compensatory mechanisms by causing decrements in RBC aggregation, may help regulation of circulation in healthy individuals with high cardiovascular risk.
    Molecular Biology Reports 06/2009; 37(1):171-8. DOI:10.1007/s11033-009-9572-9 · 2.02 Impact Factor

  • Journal of pediatric endocrinology & metabolism: JPEM 03/2009; 22(2):107-8. DOI:10.1515/JPEM.2009.22.2.107 · 1.00 Impact Factor
  • Serap Semiz · Ercin Ozgoren · Nuran Sabir · Ender Semiz ·
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    ABSTRACT: To evaluate the clinical significance of body fat distribution in childhood obesity, we investigated the associations of subcutaneous and intraabdominal (preperitoneal and visceral) fat, estimated by ultrasonography, with metabolic risk factors. Fifty-one obese (age 11.5+/- 2.6 years) and 33 non-obese (age 12.2+/- 2.7 years) children. Case control study. Ultrasonographic measurements of fat thickness [maximum and minimum preperitoneal fat thicknesses (Pmax, Pmin), maximum and minimum subcutaneous fat thicknesses (Smax, Smin), visceral fat thickness (V), triceps (Tr) and subscapular (Ss) skin fold thicknesses] were documented. Blood pressures, lipid profiles, fasting insulin levels, glucose/insulin ratio and HOMA IR (homeostasis model assessment for insulin resistance) were evaluated in both groups and these parameters were correlated with body fat distribution. In the obese group, fasting insulin level was correlated to Smin, Smax, and Pmin. HOMA, accordingly, was also correlated to Smin, Smax, and Pmin. Fasting insulin level and HOMA showed no correlation with either Pmax or visceral fat thickness. Abdominal subcutaneous fat thickness measurements were the best predictors of hyperinsulinemia (R2: 0.32). We did not observe a significant correlation between blood pressure, lipid parameters and body fat distribution in obese group. Abdominal subcutaneous fat thickness might be a better predictor of the risk for hyperinsulinemia in childhood obesity.
    Indian pediatrics 07/2008; 45(6):457-62. · 1.04 Impact Factor
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    ABSTRACT: An imbalance between the lipid peroxidation process and antioxidative protection is associated with the pathophysiology of coronary artery disease (CAD). The authors aimed to determine the relationship between the contributors of antioxidant protection, such as paraoxonase-1 (PON1) activity, albumin, vitamin C and ceruloplasmin (CP) levels, and lipid peroxidation indicators. In the present study, the activity of PON1 was measured, together with serum concentrations of a variety of lipid constituents, albumin, vitamin C and CP levels, and lipid peroxidation indicators (conjugated dienes [CDs] and thiobarbituric acid-reactive substances [TBARS]). Data were gathered from 26 nondiabetic, angiographically proven, Turkish CAD patients and 26 healthy controls living in the Antalya region (Turkey). CAD patients had significantly lower PON1 activity, high-density lipoprotein cholesterol, vitamin C and albumin concentrations, and higher CP, CD and TBARS concentrations than the controls. In the entire study population (n=52), serum CP levels were positively correlated with TBARS and CD levels, and negatively correlated with albumin and vitamin C levels, as well as with PON1 activity. On multiple logistic regression analysis, risk factors associated with CAD included high CP and low albumin levels. CAD patients and controls were matched for age and sex, and high CP and low albumin levels were found to be independent risk factors for CAD. The present data gathered from the study group living in the Antalya region verifies that in CAD patients, CP impairs the oxidant-antioxidant balance in favour of the oxidants.
    The Canadian journal of cardiology 04/2008; 24(3):209-12. DOI:10.1016/S0828-282X(08)70586-5 · 3.94 Impact Factor
  • S Semiz · E Dagdeviren · H Ergin · I Kilic · S Kirac · M Cimbis · E Semiz ·
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    ABSTRACT: A 10-year-old girl with facial anomalies, mental retardation, peripheral lymphoedema, convulsions, cerebral cortical dysgenetic changes, bronchiectasis and chronic sinusitis is presented. She had features of both yellow nail syndrome and Hennekam syndrome. We think that our case might be a new congenital lymphoedema syndrome or an intermediate form between these syndromes.
    East African medical journal 04/2008; 85(3):145-9. DOI:10.4314/eamj.v85i3.9635
  • Dursun Dursunoglu · Sukru Gur · Ender Semiz ·

    Annals of emergency medicine 11/2007; 50(4):484-5. DOI:10.1016/j.annemergmed.2007.04.029 · 4.68 Impact Factor
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    Halil Tanriverdi · Deniz Seleci · Omür Kuru · Ender Semiz ·
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    ABSTRACT: A single coronary artery is a very rare type of coronary artery anomaly that may present in various forms. A patient is presented in whom the right coronary artery coursed as the terminal branch of the left circumflex artery. This is the second case of this anomaly in the literature.
    The Canadian journal of cardiology 08/2007; 23(9):737-8. DOI:10.1016/S0828-282X(07)70820-6 · 3.71 Impact Factor

  • Journal of Electrocardiology 07/2007; 40(4). DOI:10.1016/j.jelectrocard.2007.03.366 · 1.36 Impact Factor
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    ABSTRACT: Entrapment of coronary angioplasty hardware is one of the rare complications of percutaneous coronary artery interventions. We reported herein a case of 58-year-old man with an entrapped balloon catheter and guidewire within the right coronary artery during the application of a conventional balloon angioplasty for in-stent restenosis. Surgical removal of the entrapped balloon catheter and guidewire was performed successfully with a coronary artery bypass grafting to the affected vessel. The application of the balloon angioplasty for in-stent restenosis requires every caution against such type of complications.
    Journal of Cardiac Surgery 02/2007; 22(2):160-2. DOI:10.1111/j.1540-8191.2007.00360.x · 0.89 Impact Factor
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    ABSTRACT: The anomalous origin of the left circumflex coronary artery from the right sinus of Valsalva is a relatively common anatomical variation. Difficulties may occur in the diagnostic procedure, but recognition and adequate visualization of the anomaly is essential for proper patient management, especially in patients undergoing evaluation for percutaneous coronary intervention, coronary artery surgery or prosthetic valve replacement. In the present report, a patient who had undergone percutaneous coronary intervention for a right coronary artery lesion after inferior myocardial infarction is described. The anomalous origin of the left circumflex coronary artery arising independently from the right sinus of Valsalva was previously undetected.
    Experimental and clinical cardiology 01/2007; 12(4):207-8. · 0.76 Impact Factor
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    ABSTRACT: Obstructive sleep apnea (OSA) syndrome has a critical association with cardiovascular mortality and morbidity. Aortic elastic parameters are important markers for left ventricular (LV) function and are deteriorated in cardiovascular disease. Aortic elastic parameters and LV functions and mass were investigated in 40 patients with OSA (apnea - hypopnea index (AHI) >or=5) (mean age 51.3 +/-9 years, 32 males) and 24 controls (AHI <5) (mean age 51.9+/-5.2 years, 19 males). All subjects underwent polysomnographic examination and recordings were obtained during sleep. They also underwent a complete echocardiographic examination and systolic and diastolic aortic measurements were noted from M-mode traces of the aortic root. There were no significant differences in the demographic data of the patients with OSA and the controls. Subjects with OSA demonstrated higher values of aortic stiffness (7.1+/-1.88 vs 6.42+/-1.56, p=0.0001), but lower distensibility (9.47+/-1.33 vs 11.8+/-3.36, p=0.0001) than the controls. LV ejection fraction was significantly lower in patients with OSA when compared with the control group (61.3+/-5.2% vs 65.9+/-8.4%, p=0.0001). LV diastolic parameters were also compared and were worse in the subjects with OSA than in the control subjects (mitral E/A: 0.91 +/-0.42 vs 1.35+/-0.66, p=0.001; Em/Am: 0.86+/-0.54 vs 1.23+/-0.59, p=0.021). Respiratory disturbance index had a positive correlation with aortic stiffness (r=0.63, p=0.0001 and negative correlation with distensibility (r=-0.41, p=0.001). Aortic elastic parameters are deteriorated in OSA, which has an extremely high association with cardiovascular disease. Increased aortic stiffness might be responsible for the LV systolic and diastolic deterioration in OSA syndrome.
    Circulation Journal 06/2006; 70(6):737-43. · 3.94 Impact Factor
  • Halil Tanriverdi · Deniz Seleci · Ender Semiz ·
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    ABSTRACT: Coronary artery fistula is a rare heart defect found in approximately 0.2% of the adult population undergoing coronary angiography. The diagnosis is usually made by aortography and selective coronary angiography. We report here an adult patient with rheumatic mitral stenosis and left anterior descending coronary artery and pulmonary conus branch of right coronary artery-pulmonary artery fistulas detected by coronary angiography.
    International Journal of Cardiology 05/2006; 109(1):139-41. DOI:10.1016/j.ijcard.2005.04.012 · 4.04 Impact Factor

  • Circulation Journal 01/2006; 70(6):737-743. DOI:10.1253/circj.70.737 · 3.94 Impact Factor
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    ABSTRACT: Aerobic exercise enhances endothelium-dependent vasodilation in healthy individuals. It is thought that exercise increases nitric oxide (NO) production and decreases NO inactivation, leading to an increase in NO bioavailability. Angiotensin II and NO have important roles in maintaining vascular tone. There are polymorphisms of the angiotensin converting enzyme (ACE) gene and the presence of the deletion (D) allele has been associated with higher concentrations of circulating and tissue ACE. In this study, the relationship between endothelial function and ACE gene polymorphisms was investigated in athletes and sedentary subjects. The study group comprised 56 endurance athletes and 46 sedentary subjects who underwent brachial artery ultrasonographic examination. ACE insertion (I) and D allele frequencies were analyzed in all patients. Baseline brachial artery diameter and resting blood flow were similar in athletes and controls (p > 0.05). The flow-mediated dilation (FMD) was 8.48+/-3.65% in athletes and 5.16+/-2.5% in controls (p = 0.0001). FMD was significantly different between ACE genotypes in the athletes (p < 0.0001): it was higher in ACE II (10.5+/-1.6%) subjects than in the DI (8.4+/-2.3%) or DD (7+/-1.2%) subgroups. Regular isotonic exercise can improve endothelium-dependent vasodilation especially in those with the ACE II genotype.
    Circulation Journal 09/2005; 69(9):1105-10. DOI:10.1253/circj.69.1105 · 3.94 Impact Factor
  • Yeşim A Göçmen · Ender Semiz · Saadet Gümüşlü ·
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    ABSTRACT: Turkish adults have a high incidence of coronary artery disease (CAD). The role of lipoprotein(a) (Lp[a]) as a risk factor for CAD and its association with paraoxonase-1 (PON1) activity and lipid peroxidation indicators were evaluated in Turkish subjects living in Antalya. Paraoxonase-1 activity, Lp(a), conjugated dienes (CD) and thiobarbituric acid-reactive substances (TBARS) levels were measured in 45 healthy controls and 72 CAD patients. In CAD patients, decreased PON1 activity and increased Lp(a), CD and TBARS levels were observed. Risk factors associated with CAD included TBARS, age and CD. Our results indicate an association between PON1 activity and Lp(a) level in CAD patients.
    European Journal of Cardiovascular Prevention and Rehabilitation 05/2005; 12(2):185-6. DOI:10.1097/01.hjr.0000161442.11550.75 · 3.69 Impact Factor
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    ABSTRACT: The improvement of regional and global ventricular function following percutaneous coronary intervention (PCI) with reperfusion of the artery supplying the infarct area in acute myocardial infarction is well-described. However, little is known of the potential effects of late recanalization of chronic coronary artery occlusion on left ventricular function. To determine whether PCI improves regional and global left ventricular function in patients with chronic coronary artery occlusions. Thirty-five patients having at least one coronary artery occluded for six weeks or longer were included in the present prospective study. Exercise thallium-201 myocardial perfusion scintigraphy, multiple-gated acquisition ventriculography and two-dimensional echocardiography were performed in 19 patients (16 men; mean age of 58+/-5 years) who underwent a successful PCI to assess both regional and global left ventricular function before and six weeks following the procedure. The mean ejection fractions before and after reperfusion were 51+/-7% and 58+/-6% using Simpson's method (P<0.001) by echocardiography, and 45+/-1% and 53+/-1% (P=0.01) by multiple-gated acquisition ventriculography, respectively. The echocardiographic wall motion score was 24+/-9 before and 15+/-6 after PCI (P<0.001). The exercise perfusion score (21+/-1 and 14+/-1 [P=0.01]), rest perfusion score (15+/-1 and 12+/-1 [P=0.02]) and reinjection perfusion score (14+/-1 and 11.1+/-1 [P=0.07]) also improved after PCI. The presence of angina was strongly associated with an improvement in left ventricular function and wall motion score (P<0.01). PCI significantly improved the regional and global left ventricular function in patients with chronic total coronary occlusion. This procedure may provide symptom benefits in selected patients.
    The Canadian journal of cardiology 03/2005; 21(3):275-80. · 3.71 Impact Factor
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    ABSTRACT: Paraoxonase-1 (PON1) is a high-density lipoprotein (HDL)-associated enzyme capable of hydrolyzing lipid peroxides. Thus, PON1 plays a preventing role in atherosclerosis by protecting against lipid peroxidation. The incidence of coronary artery disease (CAD) is high in the Turkish population, and many risk factors have been studied as determinants of CAD. In Turkish people living in the Antalya region, we aimed to determine serum PON1 activity and its relation to lipoproteins and lipid peroxidation markers. We measured the activity of serum PON1 together with concentrations of a variety of lipid constituents--total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), HDL cholesterol (HDL-C), triglycerides (TG), apolipoprotein (apo) A-I, apoB, and lipid peroxidation indicators (conjugated diene [CD] and thiobarbituric acid-reactive substances [TBARS])--in 108 patients with CAD and 64 healthy subjects (controls). We found that the PON1 activity was significantly reduced in patients with CAD (222.37 +/- 11.31 IU/l) compared with controls (331.75 +/- 20.98 IU/l). These patients had significantly lower HDL-C, PON1/HDL-C, apoA-I, PON1/ApoA-I, and ApoA-I/ApoB, and higher LDL-C, TC/HDL-C, LDL-C/HDL-C, apoB, CD and TBARS than did controls. Total cholesterol and apoA-I concentrations were significantly higher in women than in men in both groups. After multiple logistic regression analysis, TBARS (odds ratio [OR] 568.87; p = 0.000), age (OR 1.10; p = 0.000), gender (OR 4.58; p = 0.008), apoA-I/apoB (OR 0.046; p = 0.003), and PON1/apoA-I (OR 0.58; p = 0.007) were independently indicative of the presence of CAD. This is the first report of decreased serum PON1 activity and increased lipid peroxidation indicators (CD and TBARS) of patients with CAD living in Antalya, Turkey. Our results indicate that TBARS levels, age, gender, apoA-1/ApoB, and PON1/apoA-I ratios are important markers of CAD.
    Clinical Cardiology 07/2004; 27(7):426-30. DOI:10.1002/clc.4960270714 · 2.59 Impact Factor