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Öğe Assessment of the autonomic nervous system is an appropriate biological marker for the well-being in erectile dysfunction(Blackwell Publishing, 2008) Dogru, Tolga; Kocakz, Orhan Murat; Erberk-Ozenz, Nurper; Basar, MuratAim: To investigate whether the autonomic nervous system (ANS) components are suitable biological markers for representing well-being in patients with erectile dysfunction (ED). Methods: The present study included 74 male patients who had applied for check-ups in the cardiology outpatient clinic at Kirikkale University (Kirikkale, Turkey) and who had been diagnosed as having hyperlipidemia. Of these patients, 26 had an additional diagnosis of ED and made up the patient group. The remaining 48 patients formed the control group. Well-being was assessed with short-form 36 (SF-36). The International Index of Erectile Function (IIEF) was used as a measure of libido and erectile function. Quantitative assessment of the ANS was made based on the analysis of heart rate variability by means of 24-h holter monitorization. Results: Comparisons between the ED and control groups showed significant differences only in energy scale of SF-36. The ED group also had significantly higher values of sympathetic activity. Except for the general health score of SF-36, which was found to be correlated with parasympathetic activity only in ED group, there were similar correlation patterns within the groups. Although well-being and sympathetic activity were correlated negatively, parasympathetic activity and well-being were correlated positively. Conclusion: Quantitative assessment of the ANS by heart rate variability analysis might be a suitable marker for well-being of patients with ED.Öğe Coonhound Paralysis in A Dog(Kafkas Univ, Veteriner Fakultesi Dergisi, 2010) Gazyagci, Serkal; Dogru, Tolga…Öğe The effect of the angiotensin-converting enzyme gene polymorphism on the depression and anxiety levels(Cumhuriyet Univ Tip Fak Psikiyatri Anabilim Dali, 2009) Ozen, Nurper Erberk; Kocak, Orhan Murat; Dogru, Tolga; Sayin, D. BeyzaObjective: We aimed to investigate the relationship between the angiotensin-converting enzyme (ACE) gene insertion (I) and deletion (D) polymorphism and the levels of anxiety and depression. Methods: This is a cross-sectional study, which included the cases who admitted a university hospital cardiology department with the complaint of chest pain without cardiac etiology. It is well known that there is a strong connection between the ACE and hypertension (HT) and coronary arterial diseases (CAH) among peripheral mechanisms. Hence, the subjects included the study were preferred that have no cardiovascular diseases at that time. In this way, it was aimed to conclude that ACE might have an effect on the levels of the anxiety and depression via possible central mechanisms. The study group, which was total 39 patients, was constituted that 26 female with the mean age 51.92 +/- 9.78 and 13 male with the mean age 49.77 +/- 10.01. Their first examination was carried out in cardiology department and performed the necessary techniques. Then the subjects were given the Beck Depression Inventory and Beck Anxiety Inventory in psychiatry department. Serum samples of the group were transferred to genetic laboratory. The statistical analyses were performed by SPSS 15.0 for Windows. MANOVA, Post Hoc Bonferroni Test, Kruskal Wallis Test and Fischer's Exact Test were used with a related manner. Results: It was found that DID polymorphism that is related with the high ACE activity has a significant association between I/I polymorphism that is related with the low ACE activity and D/I polymorphism that is related with the moderate ACE activity in terms of BDI scores (p=0.010 and p=0.030, respectively). On the other hand, in the BAI scores, DID polymorphism was seen to be a significant association only with I/I polymorphism (p=0.002). Conclusion: It is well established that the ACE gene D polymorphism could be associated with the essential hypertension in the human. In our study, significant relation with the D genotyping and the levels of depression and anxiety were observed in a group, which have no cardiovascular problem detected. It could be suggested that the effect of the ACE system on the arterial pressure may have a role in a different manner from the central mechanisms which may be related the anxiety and depression etiology. (Anatolian Journal of Psychiatry 2009; 10:181-186)Öğe Heart Rate Variability in Neonates with Hypoxic Ischemic Encephalopathy(All India Inst Medical Sciences, 2012) Aliefendioglu, Didem; Dogru, Tolga; Albayrak, Meryem; DibekMisirlioglu, Emine; Sanli, CihatObjective To evaluate the changes in heart rate variability (HRV) in newborns with hypoxic-ischemic encephalopathy (HIE). Methods Twenty-two newborns (14 boys, 8 girls) with moderate or severe HIE and 24 term neonates with similar gestational and postnatal age for control were included in this study. Normalized low and high frequency components of HRV and their ratio were evaluated for 24-h in newborns with HIE and control subjects. Results The newborns with hypoxic-ischemic encephalopathy had significantly lower normalized low frequency (LFn) and low frequency (LF) / high frequency (HF) values and higher normalized high frequency (HFn) values when compared with the control babies. In addition, when the cases with severe HIE are compared with those of moderate HIE, decreased LFn, LF/HF values and also increased HFn values were present in the severe cases. Conclusions HIE is associated with reduced sympathetic nervous system activity, and increased parasympathetic nervous system activity and these activities also correlate with the severity of the disease.Öğe The relationship between orthostatic differences in arterial blood pressure and autonomic tone: gender variability(Aves, 2007) Dogru, Tolga; Gunaydin, Serdar; Simsek, Vedat; Tulmac, Murat; Tireli, EmineObjectives: The differences in orthostatic blood pressure result from dynamic changes in the sympathovagal balance. We studied sex-related variations in autonomic tone regulation. Study design: The study included 237 individuals (114 males, 123 females) who were asymptomatic and had no abnormal laboratory or physical findings. The mean age was 47 years (range 20 to 79 years) for men, and 39 years (range 20 to 71 years) for women. All the participants were subjected to a careful history taking, physical examination, routine biochemical examinations, electrocardiographic recording, 24-hour Holter monitoring, and orthostatic tests. Results: In heart rate variability analysis, parasympathetic tone parameters, in particular the high frequency (HF) component was significantly high in females, whereas sympathetic tone parameters, in particular the low frequency (LF)/HF ratio was significantly high in males (p< 0.001). The normalized LF component in males showed positive correlations with systolic (r= 0.308, p= 0.001) and diastolic (r= 0.301, p= 0.002) blood pressures during the rapid stand test; this correlation was not seen in females. Blood pressures obtained in the second minute of the rapid supine test following the stand test were in positive correlation with the LF/HF ratio in both sexes. In males, variations in systolic and diastolic blood pressures during rest, stand, and supine positions were primarily influenced by the LF component and HF component, respectively. In females, variations in systolic blood pressure during the three positions were not correlated with autonomic tone components, but variations in diastolic blood pressure were primarily affected by the LF/HF ratio. Conclusion: Autonomic system works through varying priorities in both sexes and this causes sex-related differences in orthostatic tolerance.Öğe The relationship between the QT interval and autonomous and anthropometric features(Aves, 2007) Dogru, Tolga; Gunaydin, Serdar; Simsek, Vedat; Tulmac, Murat; Guneri, MahmutObjectives: We investigated the effect of anthropometric and autonomous factors on the QT interval in both sexes. Study design: The study included 237 individuals (114 males, 123 females) who were asymptomatic and had no abnormal laboratory or physical findings. The mean age was 47 years (range 20 to 79 years) for men, and 39 years (range 20 to 71 years) for women. All the participants were subjected to a careful history taking, physical examination, routine biochemical examinations, electrocardiographic recording, 24-hour Holter monitoring, and when necessary, color Doppler echocardiography and treadmill exercise test. Serum estrogen levels, serum free and total testosterone levels were also measured in males. Results: The minimum QT interval was significantly lower in males (p=0.043). The mean QT (p=0.022) and QTc (p< 0.001) intervals in females, and QT dispersion in males (p=0.025) were significantly higher. In male participants, the maximum QT interval (p=0.049) and QT dispersion (p=0.043) were significantly different between age groups of 20-44 years and 45-69 years. Parasympathetic activity played a determinant role in the mean and maximum QT intervals. Anthropometric features were not correlated with the QT interval in females, whereas in males, waist-hip ratio was positively correlated with the mean QT and minimum QTc intervals (r=0.188, p=0.049 and r=0.236, p=0.013, respectively). Serum sex hormone levels were significantly effective on the QT interval in males. Conclusion: Concerning anthropometric and autonomic factors, the QT interval is significantly influenced by gender-related features.
