Yazar "Ugur-Altun, B" seçeneğine göre listele
Listeleniyor 1 - 13 / 13
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Autoimmune polyglandular syndrome type III in monozygotic twins: A case report(Taylor & Francis Ltd, 2004) Ugur-Altun, B; Arikan, E; Guldiken, S; Kara, M; Tugrul, AAutoimmune polyglandular syndrome is characterized by the coexistence of several autoimmune diseases, affecting predominantly the endocrine glands. Autoimmune polyglandular syndrome type III, as a subdivision of autoimmune polyglandular syndrome type H, is the co-occurrence of autoimmune thyroid disease with other autoimmune disorders without Addison disease. We present a rare case of autoimmune polyglandular syndrome type III in monozygotic twins. One of the twins also had autoimmune leukopenia. To our knowledge, leukopenia is the first mentioned coexistence in the literature of autoimmune polyglandular syndrome.Öğe Decreased serum osteoprotegerin levels in cardiac syndrome x(Nature Publishing Group, 2004) Altun, A; Ugur-Altun, B; Tatli, E[Abstract Not Available]Öğe Decreased serum osteoprotegerin levels in patients with cardiac syndrome X(Springer, 2004) Altun, A; Ugur-Altun, B; Tatli, EReceptor activator of nuclear factor kappaB (RANK) and osteoprotegerin (Cl represent the ligand and decoy receptor, respectively, of a pleiotropic cytokine system that regulates bone metabolism and vascular biology. Several studies supported systemic microvascular abnormalities in patients with cardiac syndrome X (CSX). This study investigates serum Cl levels in healthy obese subjects and healthy lean controls affected by cardiac syndrome X. Methods: We compared the Cl levels in 8 patients with cardiac syndrome X [2 males, 6 females; age: 46 +/- 6 yr; body mass index (BMI): 30 +/- 5 kg/m(2)] with 24 obese subjects (8 males, 16 females; age: 38 +/- 5 yr; BMI: 35 +/- 5 kg/m(2)) and 15 healthy lean controls (6 males, 9 females; age: 36 +/- 5 yr; BMI: 23 +/- 2 kg/m(2); BMI<25kg/m(2)). Results: Serum Cl levels in patients with cardiac syndrome X were lower than those in obese subjects and lean controls (11..45 +/- 8.36 pg/ml, 14.78 +/- 8.22 pg/mI, 19.24 +/- 6.96 pg/ml, respectively, cardiac syndrome X vs lean controls, P = 0.039). Conclusions: Serum OPG levels are lower in patients with CSX. Further studies on the mechanisms of OPG in microangiopathy may help to evaluate the OPG system role as a marker for disease activity, prognosis and response to therapy in cardiovascular diseases. (C) 2004, Editrice Kurtis.Öğe Distal sensorimotor polyneuropathy affects skeletal muscle perfusion and metabolism by Tc-99m sestarnibi leg scintigraphy in patients with type 2 diabetes(Lippincott Williams & Wilkins, 2005) Ugur-Altun, B; Durmus-Altun, G; Ustun, F; Turgut, N; Altun, A; Tugrul, AWe evaluated the effects of distal symmetric sensorimotor polyneuropathy (DSP) on skeletal muscle perfusion and metabolism in patients with type 2 diabetes. Twenty-three patients with type 2 diabetes under-went electrophysiological and Tc-99m sesta-mibi leg scintigraphic studies. The study patients were divided into 2 groups: group I (n = 14) with DSP and group 11 (n = 9) without DSP. We found decreased Tc-99m sestamibi uptake ratios (UR) of both legs in patients with DSP (right UR 7.98 +/- 6.85, left UR 7.78 +/- 7.01 vs. right UR 8.91 +/- 7.98, left UR 8.67 +/- 8.23, respectively) than without DSP, although it did not reach statistical significance. The regression equation of right UR was (Tc-99m sestarnibi UR = [1.927 X velocity of tibial nerve] - [0.942 X amplitude of sural nerve] - 81.94). In conclusion, electrophysiological variables of tibial motor and sural sensory nerves predict Tc-99m sestarnibi UR at leg scintigraphy in patients with type 2 diabetes. Additionally, decreased Tc-99m sestarnibi UR in patients with type 2 diabetes with DSP was found.Öğe Does body mass index of the patients with hypertension affect the risk of cardiovascular disease?(Nature Publishing Group, 2004) Arikan, E; Guldiken, S; Ugur-Altun, B; Kara, M; Tugrul, A[Abstract Not Available]Öğe Factors related to exercise capacity in asymptomatic middle-aged type 2 diabetic patients(Elsevier Ireland Ltd, 2005) Ugur-Altun, B; Altun, A; Tatli, E; Tugrul, AAim: We aimed to look at the relationship between exercise capacity and metabolic variables in unselected consecutive asymptomatic middle-aged type 2 diabetic patients as a potential marker for undiagnosed coronary heart disease. Method: Ninety patients (49 6 years) were included in the study. All patients performed a treadmill exercise test using the Bruce protocol. According to achieved EC, patients were separated into three groups; Group I (n, 24) 8 > metabolic equivalents (METs) greater than or equal to 5, Group II (n, 54) 11 > METs > 8 and Group III (n, 12) METs > 11. Results: Patients in group I are more likely to be of female gender and to have a family history of coronary heart disease (CHD) than in group III (P = 0.015, P = 0.009, respectively). When compared to group 111, patients in group I had higher fasting insulin and fibrinogen levels (P = 0.049 and P = 0.01, respectively). Homeostasis model assessment for insulin resistance (HOMA-IR) index (P = 0.03) was also higher in group I than in group III. We found a significant negative correlation between achieved exercise capacity and age (r = -0.204, P = 0.048), fasting insulin (r = -0.209, P = 0.048), HOMA-IR (r = -0.204, P = 0.048) as well as fibrinogen (r = -0.301, P = 0.007). Conclusion: Reduced exercise capacity was associated with increased insulin resistance as assessed by HOMA-IR index in asymptornatic middle-aged type 2 diabetic patients. (C) 2004 Elsevier Ireland Ltd. All rights reserved.Öğe Increased P wave dispersion: A new finding in patients with syndrome X(Pulsus Group Inc, 2002) Altun, A; Erdogan, O; Tatli, E; Ugur-Altun, B; Durmus-Altun, G; Ozbay, GThe present clinical study was undertaken in patients with syndrome X, namely angina with normal coronary arteries, to investigate the presence of increased P wave dispersion by comparing patients with coronary artery disease (CAD) and healthy control subjects. Three groups were studied - group A, 21 patients (48 6 years) with syndrome X; group B, 16 patients (56 9 years) with CAD; and group C, 16 healthy subjects (49 8 years). Patients with CAD were older than those in groups A and C (P=0.005 and P=0.035, respectively). All groups demonstrated similar PQ, QRS and RR intervals. Group B had a lower minimum P wave duration than group C (P=0.05). P wave dispersion in group A was found to be higher than that in groups B and C (P=0.018 and P=0.0001, respectively). Patients with syndrome X demonstrated increased P wave dispersion compared to patients with CAD and healthy subjects. High sympathetic tone or autonomic imbalance observed in patients with syndrome X may affect intra-atrial and interatrial conduction times, and leave them prone to develop atrial arrhythmias.Öğe The relationship between insulin resistance and serum osteoprotegerin level in obese patients(Nature Publishing Group, 2004) Ugur-Altun, B; Altun, A; Gerenli, M; Tugrul, A[Abstract Not Available]Öğe Relationship between insulin resistance assessed by HOMA-IR and exercise test variables in asymptomatic middle-aged patients with Type 2 diabetes(Springer, 2004) Ugur-Altun, B; Altun, A; Tatli, E; Arikan, E; Tugrul, AWe investigated the relationship between index of insulin resistance (IR) and exercise test variables in middle-aged asymptomatic patients with Type 2 diabetes. Methods: 90 patients (48 men, 42 women; age: 49+/-6 yr) were included in the study. We used homeostasis model assessment for IR (HOMA-IR) index as index of IR. All patients were subjected to treadmill exercise test. Four subjects were tested positive (4.4%). Study patients were separated into three groups: group I (no.=26) HOMA-IR index <2.24; group II (no.=26) index 2.24-3.59; group III (no.=38) index >3.59. Results: group I had less frequency of cardiovascular risk factors than group II and III (p=0.001). Systolic blood pressure baseline as well as peak exercise values, were higher in group III than in group I and II (p=0.048 vs p=0.01, respectively). Higher total exercise time and peak workload were found in group I than group II and III (p=0.04). The recovery of heart rate (Delta HRpr) was similar among the study groups. We found significant negative correlations between HOMA-IR and total exercise time and peak workload. In addition we found significant negative correlations between age vs chronotrophic index (CI), Delta HRpr, and peak workload. There were also similar negative correlations between duration of diabetes vs CI and Delta HRpr. Conclusions: IR is associated with a variety of cardiovascular risk factors. Some exercise test variables point out changes of autonomic tone during exercise in elevated IR group. Negative correlation between HOMA-IR and peak exercise capacity (METs) may well confirm increased mortality in hyperinsulinemia. (C) 2004, Editrice Kurtis.Öğe The relationship between insulin resistance assessed by HOMA-IR and serum osteoprotegerin levels in obesity(Elsevier Ireland Ltd, 2005) Ugur-Altun, B; Altun, A; Gerenli, M; Tugrul, AAim: We investigated the relationship between insulin resistance and serum osteoprotegerin (OPG) levels in healthy obese subjects and healthy lean controls. Methods: Fifty obese subjects (age: 31 +/- 8 years) and 24 lean controls (age: 30 7 years) were included in the study. We used the homeostasis model assessment for insulin resistance (HOMA-IR) index as the index of insulin resistance. OPG levels were measured with the commercial ELISA kit. Obese subjects were studied in three groups: Group I (n = 25) HOMA-IR index < 2.24, Group II (n = 13) index 2.24-3.59, Group III (n = 12) index > 3.59. Group IV (n = 24) was the lean controls with HOMA-IR index < 2.24. Results: Obese subjects with increased insulin resistance (Group III) had lower OPG values than other groups (11.88 +/- 7.43 pg/ ml, 16.39 +/- 6.39 pg/ml, 17.37 +/- 9.61 pg/ml, and 18.1 +/- 6.65 pg/ml, respectively; Group I versus Group III p = 0.036; Group III versus Group IV p = 0.012). We also found significant inverse correlations between OPGc (corrected for BMI) and fasting glucose (r = -0.325, p = 0.005), fasting insulin (r = -0.404, p = 0.0001) as well as HOMA-IR (r = -0.428, p = 0.0001). Increased fibrinogen level was found in Group III than Group IV (9.32 +/- 1.97 mu mol/1 versus 7.47 +/- 1.65 mu mol/1, respectively; p = 0.005). In conclusion, insulin resistance in obesity is associated with decreased serum OPG levels and increased fibrinogen levels. The relationship between serum OPG levels and HOMA-IR may provide an insight into vascular endothelial dysfunction in obesity. (c) 2004 Elsevier Ireland Ltd. All rights reserved.Öğe Relationships existing between the serum cytokine levels and bone mineral density in women in the premenopausal period affected by Graves' disease with subclinical hyperthyroidism(Taylor & Francis Inc, 2003) Ugur-Altun, B; Altun, A; Arikan, E; Guldiken, S; Tugrul, AWe examined the relationships existing between serum cytokine levels and bone mineral density (BMD) in women of premenopausal age affected by Graves' disease with subclinical hyperthyroidism. The study population consisted of 21 women with untreated hyperthyroid Graves' disease (group H) (age, 36 +/- 2 years), eight women with untreated subclinical hyperthyroid status (group SH) (age, 33 +/- 5 years) and 10 healthy women (group N) (age, 35 +/- 3 years). The following measurements were made in all patients: free T-4 (fT(4)), free T-3 (fT(3)), thyroid stimulating hormone (TSH), TSH receptor antibody (TRab), anti-thyroid peroxidase antibody (anti-TPO), anti-thyroglobulin antibody (anti-Tg), interleukin-2 receptor (IL-2r), interleukin-4 (IL-4), interleukin-8 (IL-8) and interleukin-13 (IL-13). IL-2r and IL-8 levels significantly increased in group H compared with group SH (p < 0.01 and p = 0.05, respectively) and group N (p < 0.001 and p = 0.02, respectively). IL-4 and IL-13 levels tended to be lower in groups H and SH compared with group N, although this difference did not reach statistical significance. Bone mineral density was significantly reduced in only two areas of the femur in group H compared with group N. There was no difference in BMD between groups SH and N. There was no correlation between thyroid hormones, serum cytokine levels and BMD in either group. In conclusion, these results suggest that there were no relationships existing between the serum level of these cytokines and BMD in women of premenopausal age affected by Graves' disease with subclinical hyperthyroidism.Öğe Serum osteoprotegerin levels in the presence and severity of obesity: A healthy younger adult population study(Nature Publishing Group, 2004) Ugur-Altun, B; Altun, A; Uysal, O; Kunduracilar, H; Arikan, E; Tugrul, A[Abstract Not Available]Öğe Sudden cardiac death in a hunger striker(Karger, 2003) Altun, G; Ugur-Altun, B; Altun, A; Azmak, D[Abstract Not Available]
