Publications by authors named "Elif Yorulmaz"

20 Publications

  • Page 1 of 1

Role of serum organic solute transporter alpha/beta and sodium taurocholate cotransporting polypeptide in intrahepatic cholestasis of pregnancy.

Ginekol Pol 2021 Apr 12. Epub 2021 Apr 12.

Department of Gastroenterology, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey.

Objectives: This study aimed to assess the role of OST-α, OST-β and NTCP in patients with ICP, with a view to determine patients with severe prognosis and to minimize adverse fetal outcomes.

Material And Methods: Sixty-nine pregnant women diagnosed with ICP and 50 healthy women were included the study. Serum OST-α, OST-β and NTCP were measured using ELISA kits.

Results: The median OST-α levels were 176.3 pg/mL in women with ICP and 201 pg/mL in healthy subjects (p = 0.205). The median OST-β levels were found to be 51.17 pg/mL in patients with ICP and 40.9 pg/mL in controls (p = 0.033). Median NTCP levels were 519.7 ng/mL in the ICP group and 483.3 ng/mL in healthy women (p = 0.051).

Conclusions: This is the first study to evaluate serum levels of OST-α, OST-β and NTCP in patients with ICP. It is likely that OST-α, OST-β and NTCP contribute to the etiopathogenesis of ICP. Serum OST-α and OST-β levels can be used as diagnostic and monitoring markers of ICP, and the inhibition of these molecules could provide therapeutic benefit in ICP by reducing the circulation of enterohepatic bile acids.
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http://dx.doi.org/10.5603/GP.a2021.0063DOI Listing
April 2021

Therapeutic effectiveness of rectally administered fish oil and mesalazine in trinitrobenzenesulfonic acid-induced colitis.

Biomed Pharmacother 2019 Oct 24;118:109247. Epub 2019 Jul 24.

Departments of Internal Medicine, Bağcılar Training and Research Hospital, Istanbul, Turkey.

Aim: Fish oil (FO) and mesalazine have well-known anti-inflammatory and antioxidant effects; on the other hand, information related to combined intrarectal administration of FO and mesalazine is limited. The present study was conducted to make comparison on therapeutic effectiveness of rectally administered FO and mesalazine in rats with trinitrobenzenesulfonic acid (TNBS)-induced colitis.

Methods: Wistar rats were randomly assigned to 5 groups as (1) Control, (2) Colitis, (3) Colitis + Mesalazine (Colitis + M), (4) Colitis + Fish Oil (Colitis + F), and (5) Colitis + Mesalazine + Fish Oil (Colitis + M + F). Intrarectally administered TNBS induced colitis. At the end of the trial, the rats' macroscopic and histopathologic lesions were rated and tumour necrosis factor (TNF)-α, Interleukin 6 (IL6), glutathione reductase (GR), glutathione peroxidase (GP), myeloperoxidase (MPO), malondialdehyde (MDA), Superoxide dismutase (SOD), Total nitrate and nitrite, and catalase (CAT) in serum and tissue were detected.

Results: As a result of macroscopic and microscopic examination, although separate administrations of FO and mesalazine partly decreased the damage, their combined administration decreased the damage scores significantly (p < 0.01). It was observed that separate and combined administrations of FO and mesalazine decreased the increase in the serum and tissue TNF-α and IL-6 levels caused by colitis (p < 0.05). It was observed that the serum MPO, serum GR, tissue SOD, tissue nitrite/nitrate values of both Colitis + M and Colitis + F groups were close to the control in terms of all the parameter values in Colitis + M + F group (p > 0.05). Also based on the histological results, the inflammation damage in the tissue caused by colitis in the Colitis + M + F group recovered significantly.

Conclusions: We found that microscopic and macroscopic damage, serum IL-6 level decreased and increased serum and tissue GP and tissue GR values in Colitis + M + F group compared to Colitis + M and Colitis + F groups. Combined intrarectal administration of FO and mesalazine may bring a new insight concerning the treatment of ulcerative colitis.
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http://dx.doi.org/10.1016/j.biopha.2019.109247DOI Listing
October 2019

Extracellular matrix protein 1 gene rs3737240 single nucleotide polymorphism is associated with ulcerative colitis in Turkish patients.

Turk J Gastroenterol 2017 Jul;28(4):254-259

Department of Gastroenterology, İstanbul Medeniyet University School of Medicine, Göztepe Training and Research Hospital, İstanbul, Turkey.

Background/aims: Ulcerative colitis (UC) and Crohn's disease are chronic inflammatory diseases. Genetic, immunologic, and microbial factors play an important role in their pathogenesis. Extracellular matrix protein 1 (ECM1), a gene related to mucosal barrier function, has been shown to be associated with UC. This study aims to determine the relationship between ECM1 gene rs3737240 single nucleotide polymorphism (SNP) and UC in a group of Turkish patients.

Materials And Methods: Ninety-four UC patients and 120 healthy controls were enrolled in the study. ECM1 gene rs3737240 SNP genotyping was performed using the polymerase chain reaction-restriction fragment length polymorphism method.

Results: TT genotype was significantly more common in UC patients than in the healthy control group [p=0.034; odds ratio (OR) 2.34; 95% confidence interval (CI) 1.04-5.25]. The presence of C allele significantly lowered the UC risk (p=0.034; OR 0.42; 95% CI 0.19-0.95). TT genotype was significantly associated with azathioprine use in UC patients (p=0.037; OR 3.0; 95% CI 1.04-8.65). The C allele significantly reduced the probability of azathioprine use in UC patients (p=0.037; OR 0.33 CI 95% 0.11-0.96). No relation was found between rs3737240 SNP genotype and the phenotypical characteristics of UC patients.

Conclusion: The TT genotype of ECM1 gene rs3737240 SNP significantly increased susceptibility for UC and azathioprine use in UC patients in a Turkish population.
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http://dx.doi.org/10.5152/tjg.2017.17043DOI Listing
July 2017

Prevalence of celiac disease in adult type 1 patients with diabetes.

Pak J Med Sci 2015 Jul-Aug;31(4):865-8

Aytekin Oguz, Department of Internal Medicine, Scholl of Medicine, Istanbul Medeniyet University, Istanbul Turkey.

Objectives: Celiac disease, an autoimmune disease, is related to immune mediated intolerance to gluten. Some studies suggest that Celiac Disease was 20 times more frequent in type 1 patients with diabetes. The objective of our study was to evaluate the prevalence of celiac disease in hospital based type 1 diabetic adults.

Methods: Our study was carried out retrospectively in Medeniyet University Goztepe Training and Educational Hospital in Istanbul between 2012-2013. The cohort comprised 482 type 1 patients with diabetes attending the diabetes outpatient clinic. The data were analyzed by SPSS 10.5 package program. Student's t tests is used for comparative analyses. A p-value less than 0.05 was considered statistically significant.

Results: The cohort included 482 type 1 patients with diabetes. Fifty seven of them were not evaluated for Endomysium antibody positivity. Fifteen of the remaining 425 patients were positive for anti endomysial antibody (3.5%). The prevalence of biopsy proven celiac disease was 2.3% (10/425). There was no significant difference between Endomysial antibody positive and negative groups in regard of age, sex, or duration of the disease.

Conclusion: This study confirms that the celiac disease is common in type 1 diabetic patients. Since a small proportion of celiac patients are symptomatic this disorder should be screened in all adult type 1 patients with diabetes by antiendomysium antibody.
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http://dx.doi.org/10.12669/pjms.314.7206DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4590365PMC
October 2015

Mucocutaneous manifestations of inflammatory bowel disease in Turkey.

J Cutan Med Surg 2014 Nov;18(6):397-404

Background: Mucocutaneous manifestations of inflammatory bowel diseases are relatively common; the mean incidence is around 10% at the time of diagnosis. However, during follow-up, an increased variety of skin lesions, granulomatous cutaneous disease, reactive skin eruptions, nutritional defiencies, and other associated conditions may develop.

Objective: The objective of this study was to evaluate the prevalence of the mucocutaneous manifestations and their association with gender, duration of disease, arthritis, location of the bowel disease, and disease activity.

Methods: Fifty-six patients with ulcerative colitis (UC) and 36 patients with Crohn disease (CD) who were in follow-up in the Istanbul Medeniyet University Göztepe Training and Research Hospital Department of Gastroenterology were included in the study. Whole-body dermatologic examinations were performed for all patients, and patient files were evaluated for mucocutaneous manifestations.

Results: Of the 92 patients, 49 (53.26%) presented with at least one mucocutaneous manifestation (58.9% of patients with UC and 44.4% of patients with CD). Of these, 38 (41.3%) had at least one reactive skin eruption. Aphthous stomatitis was noted in 33 patients (35.86%) and became the most common mucocutaneous manifestation. Granulomatous cutaneous diseases were detected in 18 patients (19.57%), and none of the patients had a nutritional deficiency-associated skin condition. Only 3 patients (3.26%) had erythema nodosum and 2 patients (2.17%) had pyoderma gangrenosum.

Conclusions: We found that mucocutaneous manifestations of inflammatory bowel diseases are more common than thought and are more common in UC than in CD. No association was detected between mucocutaneous manifestions and gender, duration of disease, arthritis, location of the bowel disease, and activity of the disease.
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http://dx.doi.org/10.2310/7750.2014.13209DOI Listing
November 2014

Serum concentrations of insulin-like growth factor-binding protein 5 in Crohn's disease.

World J Gastroenterol 2013 Dec;19(47):9049-56

Gupse Adali, Elif Yorulmaz, Celal Ulasoglu, Yasar Colak, Ilyas Tuncer, Department of Gastroenterology, Goztepe Training and Research Hospital, Istanbul Medeniyet University, Doktor Erkin Caddesi Kadikoy, Istanbul 34730, Turkey.

Aim: To investigate serum insulin-like growth factor-binding protein 5 (IGFBP-5) levels and intestinal IGFBP-5 expression in patients with Crohn's disease (CD).

Methods: We analyzed the serum concentrations and intestinal expression of IGFBP-5 in 42 patients with CD, of whom 26 had endoscopically or radiologically proven stricture formation. Nine of the 42 patients had active disease, with a Crohn's disease activity index > 150. Serum IGFBP-5 levels were analyzed in 20 healthy controls matched by sex and age to the CD patients. Serum IGFBP-5 was measured using an enzyme-linked immunosorbent assay. Intestinal tissue was obtained from patients through endoscopic biopsies. IGFBP-5 expression was detected using immunohistochemistry and was scored semiquantitatively.

Results: The median serum IGFBP-5 concentrations of CD patients were significantly lower compared with healthy controls [median 7.2 (IQR: 5.5-11.3) ng/mL vs 11.3 (8.0-44.6) ng/mL, P < 0.001]. There was no significant difference between median serum IGFBP-5 levels in CD patients with or without stricture formation [6.9 (5.5-11.3) ng/mL vs 7.8 (5.3-10.1) ng/mL, P = 0.815]. The serum IGFBP-5 levels were not significantly different between patients with active disease and inactive disease [7.2 (6.5-7.6) ng/mL vs 7.2 (5.5-11.3) ng/mL, P = 0.890]. However, a significant correlation was observed between serum IGFBP-5 levels and platelet count (PLT) (r = 0.319, P = 0.0395). No significant correlation was found between tissue IGFBP-5 immunohistochemical staining intensity scores and serum IGFBP-5 levels. No significant difference was found when comparing the serum IGFBP-5 levels among the patients with different tissue IGFBP-5 staining scores (absent/very weak, weak, moderate or strong). There was a significant correlation between tissue IGFBP-5 staining scores and white blood cell count (r = 0.391, P = 0.01) and PLT (r = 0.356, P = 0.021).

Conclusion: Our results indicate that serum IGFBP-5 concentrations were lower in CD patients compared to healthy controls regardless of disease activity or the presence of stricture formation.
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http://dx.doi.org/10.3748/wjg.v19.i47.9049DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3870558PMC
December 2013

Prolonged QT dispersion in inflammatory bowel disease.

World J Gastroenterol 2013 Jan;19(1):65-71

Department of Gastroenterology, Goztepe Training and Research Hospital, 34470 Istanbul, Turkey.

Aim: To investigate the frequency and factors of prolonged QT dispersion that may lead to severe ventricular arrhythmias in patients with inflammatory bowel disease (IBD).

Methods: This study included 63 ulcerative colitis (UC) and 41 Crohn's disease (CD) patients. Forty-seven healthy patients were included as the control group. Heart rate was calculated using electrocardiography, corrected QT dispersion (QTcd) and the Bazett's formula. Homeostasis model assessment (HOMA) was used to determine insulin resistance (IR). HOMA values < 1 were considered normal and values > 2.5 indicated a high probability of IR.

Results: Prolonged QTcd was found in 12.2% of UC patients, and in 14.5% of CD patients compared with the control group (P < 0.05). A significant difference was found between the insulin values (CD: 10.95 ± 6.10 vs 6.44 ± 3.28, P < 0.05; UC: 10.88 ± 7.19 vs 7.20 ± 4.54, P < 0.05) and HOMA (CD: 2.56 ± 1.43 vs 1.42 ± 0.75, P < 0.05; UC: 2.94 ± 1.88 vs 1.90 ± 1.09, P < 0.05) in UC and CD patients with and without prolonged QTcd. Disease behavior types were determined in CD patients with prolonged QTcd. Increased systolic arterial pressure (125 ± 13.81 vs 114.09 ± 8.73, P < 0.01) and age (48.67 ± 13.93 vs 39.57 ± 11.58, P < 0.05) in UC patients were significantly associated with prolonged QTcd.

Conclusion: Our data show that IBD patients have prolonged QTcd in relation to controls. The routine follow-up of IBD patients should include determination of HOMA, insulin values and electrocardiogram examination.
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http://dx.doi.org/10.3748/wjg.v19.i1.65DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545229PMC
January 2013

Metabolic syndrome frequency in inflammatory bowel diseases.

Saudi J Gastroenterol 2011 Nov-Dec;17(6):376-82

Department of Gastroenterology, Goztepe, Training and Research Hospital, Istanbul, Turkey.

Background/aim: Metabolic syndrome (MetS) is a clinical condition characterized by central obesity, elevated triglycerides, low-high density lipoproteins, impaired fasting glucose, and hypertension. There is insufficient data on the prevalence of MetS in patients with inflammatory bowel disease (IBD). This study sought to determine the prevalence of MetS in a Turkish cohort of patients with IBD and the association between insulin resistance (IR) and the MetS parameters, in this population.

Patients And Methods: A total of 177 patients over 18 years of age (62 with Crohn's disease (CD) and 115 with ulcerative colitis (UC)) were enrolled in the study. The presence of at least three criteria of the International Diabetes Federation (IDF) was accepted for the diagnosis of MetS. The Homeostasis Model Assessment (HOMA) was used to determine IR. HOMA values < 1 were considered normal and values > 2.5 indicated a high probability of IR.

Results: MetS frequency was higher in patients n=34 (29.5%) with UC than in patients n=11 (17.7%) with CD (P < 0.01). MetS was detected in 12 of the 117 patients (10.3%) with IBD, under 45 years of age, and in 33 of 60 patients (55%) over 45 years of age. HOMA value in n=31 patients (27%) with UC was > 2.5. Body mass index, insulin (P < 0.001), waist circumference, fasting plasma glucose, leukocyte count (P < 0.01), triglycerides, C-reactive protein, and uric acid values (P < 0.05) were significantly higher in UC patients with IR than those without IR.

Conclusion: Frequent occurrence of MS with increasing age in IBD, particularly in UC, showed the importance of early diagnosis and treatment of cardiovascular disease risk factors in the long-term follow-up of these diseases.
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http://dx.doi.org/10.4103/1319-3767.87177DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3221110PMC
March 2012

SIRT1 as a potential therapeutic target for treatment of nonalcoholic fatty liver disease.

Med Sci Monit 2011 May;17(5):HY5-9

Department of Gastroenterology, S. B. Goztepe Education and Research Hospital, Istanbul, Turkey.

Sirtuins are members of the silent information regulator 2 (Sir2) family, a group of Class III histone/protein deacetylases. There are 7 different sirtuins in mammals (SIRT1-7), of which SIRT1 is the best known and most studied. SIRT1 is responsible for the regulation of protein activation by means of deacetylating a variety of proteins that play important roles in the pathophysiology of metabolic diseases. Recently, it has been shown that SIRT1 plays key roles in the regulation of lipid and glucose homeostasis, control of insulin secretion and sensitivity, antiinflammatory effects, control of oxidative stress and the improvements in endothelial function that result due to increased mitochondrial biogenesis and β-oxidation capacity. Nonalcoholic fatty liver disease (NAFLD) is currently the most common liver disease, and it has been accepted as the hepatic component of metabolic syndrome. Recent studies have shown that SIRT expression in the liver is significantly decreased in an NAFLD model of rats fed a high-fat diet, and moderate SIRT1 overexpression protects mice from developing NAFLD. In addition to resveratrol, a natural SIRT1 activator, small-molecule pharmacologic SIRT1 activators have positive effects on metabolic diseases. These effects are particularly promising in the case of diabetes mellitus, for which phase studies are currently being performed. With this information, we hypothesized that the pharmacologic activation of SIRT1, which has been implicated in the pathogenesis of NAFLD, will be a potential therapeutic target for treating NAFLD. In this paper, we review the metabolic effects of SIRT1 and its association with the pathophysiology of NAFLD.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3539588PMC
http://dx.doi.org/10.12659/msm.881749DOI Listing
May 2011

A case of Meckel's diverticulitis treated on the assumption of Crohn's disease.

Turk J Gastroenterol 2010 Jun;21(2):175-8

Department of Gastroenterology, Göztepe Training and Research Hospital, Istanbul.

Meckel's diverticulum is the most common congenital abnormality of the gastrointestinal system. It usually has an asymptomatic course and is detected incidentally during laparoscopy. Symptomatic cases are mostly observed under two years of age. In adults, it may rarely manifest with life-threatening complications. In this report, we present a 19-year-old case with Meckel's diverticulum operated with ileus while under followup, who was assumed to have Crohn's disease.
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http://dx.doi.org/10.4318/tjg.2010.0079DOI Listing
June 2010

Frequency of cardiovascular risk factors and metabolic syndrome in patients with chronic kidney disease.

Clin Med Res 2010 Dec 3;8(3-4):135-41. Epub 2010 Aug 3.

Department of Internal Medicine, Goztepe Training and Research Hospital, Istanbul, Turkey.

Objective: Metabolic syndrome is a clustering of cardio-metabolic risk factors. Cardiovascular disease is the main cause of morbidity and mortality in end-stage renal disease. The aim of this study was to elucidate the frequency of traditional and novel cardiovascular and metabolic syndrome risk factors in patients with chronic kidney disease. Identification of these risk factors will allow for precautions to be taken earlier to prevent cardiovascular diseases and metabolic syndrome in chronic kidney disease patients.

Methods: A total of 214 patients (91 females, 123 males, mean age 56.1 ± 14.4 years) with chronic kidney disease who were followed in the Nephrology Department of Istanbul Goztepe Training and Research Hospital were included in the study. Anthropometric and biochemical measurements for cardiovascular risk factors and metabolic syndrome parameters were recorded. Glomerular filtration rates (GFR) were estimated using the Cockroft Gault formula. Metabolic syndrome was defined according to International Diabetes Federation criteria.

Results: Thirty-seven percent of patients with chronic renal failure were found to have three or more major cardiovascular risk factors. Seventy percent of patients were found to have metabolic syndrome. The mean numbers of major cardiovascular risk factors and metabolic syndrome parameters in patients with different GFR stages were: 1.8 ± 1.0, 2.6 ± 1.2 (GFR <15 mL/min per 1.73 m(2), n = 102); 2.4 ± 1.0, 3.0 ± 1.0 (GFR 15-29 mL/min per 1.73 m(2), n = 51 ); 2.5 ± 1.1, 3.3 ± 1.0 (GFR 30-59 mL/min per 1.73 m(2), n = 39); 2.4 ± 1.1, 3.5 ± 0.7 (GFR 60-89 mL/min per 1.73 m(2), n = 22), respectively (P = .001).

Conclusion: Although the frequency of cardiovascular risk factors and metabolic syndrome were high in patients with chronic kidney disease, they were negatively correlated with the stage of renal failure.
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http://dx.doi.org/10.3121/cmr.2010.892DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3006534PMC
December 2010

A remarkable intestinal lipoma case.

Ulus Travma Acil Cerrahi Derg 2009 Jul;15(4):399-402

Department of Gastroenterology, Göztepe Training and Research Hospital, Istanbul, Turkey.

A 37-year-old female patient with a history of iron deficiency anemia for three years had been hospitalized and followed up with subileus. An obstruction at the proximal part of the jejunum was found by enteroclysis method and a filling defect due to a polypoid mass was determined. The small intestine was resected. It was reported as a submucosal lipoma based on results of the histopathological examination. In conclusion, benign tumors of the small intestine, including intestinal lipomas, should be considered during the diagnostic process of clinical ileus and anemia.
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July 2009

Frequency of abdominal obesity and metabolic syndrome in healthcare workers and their awareness levels about these entities.

Turk Kardiyol Dern Ars 2008 Jul;36(5):302-9

Department of Internal Medicine, Göztepe Training and Research Hospital, Istanbul, Turkey.

Objectives: We investigated the frequency of metabolic syndrome (MetS) and abdominal obesity and evaluated the level of awareness about these two conditions in healthcare workers.

Study Design: A total of 723 healthcare workers (372 physicians, 247 nurses, 104 other healthcare staff; mean age 32.8+/-8.2 years) from four centers were included. Demographic, anthropometric, and biochemical data were recorded, lifestyle features were inquired, and the levels of awareness about abdominal obesity and MetS were surveyed. The criteria recommended by the Adult Treatment Panel (ATP) III were used for the diagnosis of abdominal obesity and MetS. The presence of MetS was evaluated in 178 subjects. Univariate and multivariate analyses were performed to evaluate the association between lifestyle features and abdominal obesity.

Results: The frequency of abdominal obesity was 13.8% and it was significantly higher in males than in females (19.1% vs 10.6%; p=0.002). Metabolic syndrome was diagnosed in 14 participants (7.9%), and there was no significant difference between men and women in this respect (p>0.05). The cut-off values for abdominal obesity and at least three criteria of MetS were correctly listed by 47 participants (6.5%) and 240 participants (33.2%), respectively, with physicians showing significantly higher awareness levels (p=0.001). In multivariate analysis, age =or>40 years and male gender were significantly associated with abdominal obesity.

Conclusion: Our results demonstrate that only a minority of healthcare workers are cognizant of MetS as a clinical syndrome and the definition of abdominal obesity.
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July 2008

Takayasu's arteritis in a case diagnosed as Crohn's disease.

Turk J Gastroenterol 2007 Dec;18(4):250-3

Department of Gastroenterology, Göztepe Training and Research Hospital, Istanbul, Turkey.

Takayasu's arteritis is a chronic granulomatous vasculitis of unknown etiology that primarily affects the great arteries; the aorta and its branches, and pulmonary and coronary arteries are the most commonly affected. Takayasu's arteritis and inflammatory bowel disease in the same individual has been occasionally reported in the literature. We report a case with Takayasu's arteritis and Crohn's disease.
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December 2007

Effect of nebivolol and metoprolol treatments on serum asymmetric dimethylarginine levels in hypertensive patients with type 2 diabetes mellitus.

Anadolu Kardiyol Derg 2007 Dec;7(4):383-7

Department of Internal Medicine, Göztepe Training and Research Hospital, Istanbul, Turkey.

Objective: Elevated asymmetric dimethylarginine (ADMA) levels, an endogenous inhibitor of nitric oxide synthase, are an important cardiovascular risk factor. In patients with diabetes, increased ADMA levels have been reported, which may be associated with endothelial dysfunction. In this study, effect of nebivolol on serum ADMA levels in hypertensive patients with type 2 diabetes have been compared with metoprolol, an another beta-blocker.

Methods: A total of 54 patients (27 female, 27 male; mean age: 53.0+/-8.7 years) with type 2 diabetes and hypertension were included in this randomized, open-label, prospective study. Patients were randomized to receive either nebivolol 5 mg/day (n=28) or metoprolol 100 mg/day (n=26) for 12 weeks. When the patients could not reach target blood pressure levels at the end of week 4, indapamide (2.5 mg/day) was added. Enzyme Linked Immunosorbent Assay was used for serum ADMA measurements.

Results: Similar reductions in blood pressure values were observed in both groups (p>0.05). In nebivolol group, there were no significant changes in serum ADMA levels compared to baseline (0.6+/-0.2 micromol/l vs 0.6+/-0.1 micromol/l, p>0.05), whereas in metoprolol group a 35.6% increase in serum ADMA levels was observed (0.6+/-0.1 micromol/l vs 0.7+/-0.2 micromol/l, p<0.01).

Conclusion: We observed a significant increase in ADMA levels, a marker of endothelial dysfunction, during metoprolol treatment, whereas nebivolol had neutral effects on ADMA levels in patients with type 2 diabetes mellitus and hypertension.
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December 2007

Prevalence of subclinical hypothyroidism in patients with metabolic syndrome.

Endocr J 2007 Feb 14;54(1):71-6. Epub 2006 Nov 14.

Department of Internal Medicine, Goztepe Training and Research Hospital, Istanbul, Turkey.

Subclinical hypothyroidism (SCH) is a prevalent condition among adult population, however it is frequently overlooked. Thyroid functions affect metabolic syndrome (MetS) parameters including HDL cholesterol, triglycerides, blood pressure and plasma glucose. On the other hand, the relation between MetS and thyroid dysfunction is not clearly identified yet. The aim of the present study was to investigate the prevalence of SCH among MetS patients and to identify its relation with MetS parameters. Two hundred and twenty MetS patients (MetS group; 167 female, 53 male, mean age: 48.5 +/- 11.3) and 190 patients without MetS (Control group; 142 female, 48 male, mean age: 46.3 +/- 11.9) attending consecutively to Internal Medicine outpatient clinics were included in this study. Groups were compared in terms of SCH prevalence. SCH was defined as a condition with high thyrotrophin and normal free thyroxine levels. SCH was found in 36 (16.4%) cases in the MetS group and in 11 (5.8%) cases in the control group (p = 0.001). Only female gender was associated with the presence of SCH. About one sixth of MetS patients had SCH. This finding indicates a need for investigating the presence of SCH during the management of MetS patients.
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http://dx.doi.org/10.1507/endocrj.k06-124DOI Listing
February 2007

The effect of carvedilol on metabolic parameters in patients with metabolic syndrome.

Int Heart J 2006 May;47(3):421-30

Department of Internal Medicine, Goztepe Training and Research Hospital, Istanbul, Turkey.

The objective of the present study was to explore the effect of carvedilol treatment on metabolic parameters in patients with metabolic syndrome. A total of 77 patients > or = 20 years of age (59 females, 18 males, mean age, 52.3 +/- 10.3) with stage 1 hypertension who fulfilled at least 3 of the metabolic syndrome criteria proposed by NCEP-ATP III were included in this prospective, randomized, controlled study. Patients were randomly assigned to receive daily treatment with carvedilol (n = 27, 12.5 mg/day orally for the first 2 days and 25 mg/day thereafter), atenolol (n = 26, 50 mg/day orally), or doxazosin (n = 24, 2 mg/day orally) for 90 days. Doses were doubled at the end of the 3rd week in patients whose blood pressure was inadequately controlled and amlodipine 10 mg was added to the treatment if the target blood pressure was still not reached at the end of week 6. The biochemical parameters and insulin sensitivity based on the HOMA-IR model were evaluated at baseline and at the end of treatment. Similar reductions in systolic and diastolic blood pressure were observed in all groups (P > 0.05). A significant decrease in HDL cholesterol levels occurred in the doxazosin and atenolol groups compared to the carvedilol group (percent change: -5.6 +/- 13.5 and -8 +/- 9.8 versus -0.1 +/- 12.2, respectively; P < 0.05) and a significant increase in apolipoprotein A1 level was observed in the carvedilol group compared to the doxazosin and atenolol groups (percent change: + 4.3 +/- 9.6 versus - 0.5 +/- 10.6 and -2.3 +/- 6.6, respectively; P < 0.05). There were no significant differences among the groups with respect to other parameters. It is concluded antihypertensive treatment with carvedilol in patients with metabolic syndrome effectively reduces blood pressure without adversely affecting metabolic parameters.
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http://dx.doi.org/10.1536/ihj.47.421DOI Listing
May 2006
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