1
|
Bulut İ, Yegin Katran Z, Yavuz D, Yıldız AB, Yakut T, Örçen C, Mersin SS. [Effectiveness of mepolizumab in patients with severe eosinophilic asthma: In a real life study]. Tuberk Toraks 2023; 71:148-155. [PMID: 37345397 PMCID: PMC10795248 DOI: 10.5578/tt.20239918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023] Open
Abstract
Introduction We analyzed the effects of mepolizumab treatment on symptoms, asthma attacks, pulmonary function test parameters peripheral blood eosinophil level, and percentage in patients with severe eosinophilic asthma receiving mepolizumab treatment as the baseline, sixth and twelfthmonth data. Materials and Methods The medical records of patients diagnosed with severe eosinophilic asthma and treated with mepolizumab at our clinic were retrospectively reviewed for the period between January 2018 and December 2021. Demographic data of the patients, duration of asthma disease, comorbidities such as a nasal polyp, eosinophilic granulomatous polyangiitis, and nonsteroidal anti-inflammatory drug exacerbated respiratory disease were investigated. A comparison was made of various factors before initiating mepolizumab treatment, as well as at the sixth and twelfth month after treatment initiation. These factors include asthma control test scores, frequency of asthma attacks (including emergency admissions, hospitalizations, and intensive care admissions), peripheral blood eosinophil levels and percentages, and pulmonary function test parameters. Clinic and laboratory parameters that provide a prediction of being a responder and super responder were evaluated. Result A total of 21 patients were included in the study. Their mean age was 50.7 ± 11.9 years, and four (19%) were males. The mean duration of asthma diagnosis was 17.5 ±13.7 years. 14 patients (66.7%) were atopic. 4 patients (19%) had nasal polyps and four patients (19%) had NERD. Before mepolizumab, 13 (61.9%) patients had received omalizumab. The duration of receiving mepolizumab treatment was 29.2 ± 9.9 months. A statistically significant decrease was observed in both the number and percentage of eosinophils at months six and 12 (p<0.01). There was a statistically significant increase in FEV1 values both as a percentage and in milliliters at month 12. There was an increase in both percentage and milliliters in FEF25-75 values, but this increase did not reach statistical significance. There was a decrease in service admissions, intensive care admissions, and emergency admissions due to asthma exacerbations. Out of 21 patients, 11 (52.4%) were classified as responders, while 10 (47.6%) were classified as super responders. Conclusions Although the number of patients in our study was limited, mepolizumab improved symptom scores in severe eosinophilic asthma, reduced the number of attacks, and improved pulmonary function test values.
Collapse
Affiliation(s)
- İsmet Bulut
- Clinic of Allergy Immunology, Süreyyapaşa Chest Diseases-Thoracic Surgery Training and Research Hospital, University of Health Sciences İstanbul, Türkiye
| | - Zeynep Yegin Katran
- Clinic of Allergy Immunology, Süreyyapaşa Chest Diseases-Thoracic Surgery Training and Research Hospital, University of Health Sciences İstanbul, Türkiye
| | - Dilek Yavuz
- Clinic of Allergy Immunology, Süreyyapaşa Chest Diseases-Thoracic Surgery Training and Research Hospital, University of Health Sciences İstanbul, Türkiye
| | - Ali Burkan Yıldız
- Clinic of Allergy Immunology, Süreyyapaşa Chest Diseases-Thoracic Surgery Training and Research Hospital, University of Health Sciences İstanbul, Türkiye
| | - Tuğçe Yakut
- Clinic of Allergy Immunology, Diyarbakır Training and Research Hospital, Diyarbakır, Türkiye
| | - Cihan Örçen
- Clinic of Allergy Immunology, Derince Training and Research Hospital, Kocaeli, Türkiye
| | - Selver Seda Mersin
- Clinic of Allergy Immunology, Dr. Ersin Arslan Training and Research Hospital, Gaziantep, Türkiye
| |
Collapse
|
2
|
Katran ZY, Bulut İ, Babalık A, Keren M, Tepetam FM, Mersin SS, Örçen C, Yakut T, Yavuz D. Drug hypersensitivity in drug-resistant tuberculosis. World Allergy Organ J 2023; 16:100778. [PMID: 37251814 PMCID: PMC10213312 DOI: 10.1016/j.waojou.2023.100778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/03/2023] [Accepted: 04/14/2023] [Indexed: 05/31/2023] Open
Abstract
Objective To evaluate drug resıstant tuberculosis patients who developed drug hypersensitivity to antituberculosis drug. Methods This was a retrospective study. The primary aim of the study is to determine the demographic and clinical characteristics of patients who develop drug hypersensitivity in drug resistant tuberculosis patients. The secondary aim of the study is to examine the treatment results. Demographic features, tuberculosis diagnostic indicator, clinical signs of developing hypersensitivity reaction, reaction time, and treatment were evaluated. Results A total of 25 patients were included in the study. The prevalence of hypersensitivity in drug resistance patients was 11.9%. Twelve (48%) of the cases were women. Mean age (mean ± SD) was 37.24 ± 14.44 years; early type hypersensitivity reaction in 13 (52%). Three patients were isoniazid resistant; 19 patients were multidrug-resistant (MDR); 2 patients were pre-extensive drug resistant (Pre-XDR), 1 patient was extensive drug resistance (XDR) tuberculosis. The most common skin findings were maculopapular eruption and urticaria. But also we had seen ısole angıodema, urtıcarıa and angıoedema, erythema multıforme, lıchenoıd drug eruptıon and drug rash with eosinophilia and systemic symptoms. In patients who developed a hypersensitivity reaction, the responsible agent was identified in 14 cases in total. Among the drugs, pyrazinamide, ethambutol, moxifloxacin, amikacin, para amino salicylic, prothionamide, and cycloserine are the responsible agents. When evaluated in terms of treatment results, 15 (60%) patients successfully completed the treatment. Conclusion Our study is the first study in the literature that evaluated the drug hypersensitivity in drug resıstance tuberculosis patients. Drug hypersensitivity that develops with tuberculosis treatment may lead to discontinuation or change in treatment. İt can cause treatment failure, drug resistance, relapse, and even death. In resistant tuberculosis, the already existing resistance pattern may become more difficult to treat. Success can be achieved with the right management in these patients who have few treatment options, more drug side effects, and high treatment failure rates. The established regimen should be curative and prevent recurrence.
Collapse
Affiliation(s)
- Zeynep Yegin Katran
- Department of Allergy and Immunology, University of Health Sciences, Süreyyapaşa Training and Research Hospital, Istanbul, Turkey
| | - İsmet Bulut
- Department of Allergy and Immunology, University of Health Sciences, Süreyyapaşa Training and Research Hospital, Istanbul, Turkey
| | - Aylin Babalık
- Department of Chest Diseases, University of Health Sciences, Süreyyapaşa Training and Research Hospital, İstanbul, Turkey
| | - Metin Keren
- Department of Allergy and Immunology, University of Health Sciences, Süreyyapaşa Training and Research Hospital, Istanbul, Turkey
| | - Fatma Merve Tepetam
- Department of Allergy and Immunology, University of Health Sciences, Süreyyapaşa Training and Research Hospital, Istanbul, Turkey
| | - Selver Seda Mersin
- Department of Allergy and Immunology, Dr Ersin Arslan Training and Research Hospital, Gazıantep, Turkey
| | - Cihan Örçen
- Department of Allergy and Immunology, Derınce Training and Research Hospital, Kocaeli, Turkey
| | - Tuğçe Yakut
- Department of Allergy and Immunology, Diyarbakır Training and Research Hospital, Diyarbakır, Turkey
| | - Dilek Yavuz
- Department of Allergy and Immunology, University of Health Sciences, Süreyyapaşa Training and Research Hospital, Istanbul, Turkey
| |
Collapse
|
3
|
Akçay S, Talha Şişman I, Yavuz D. A rare reason for hospital admission with muscle weakness in the Covid-19 rra: CPT-2 deficiency. JCEM Case Reports 2023; 1. [DOI: 10.1210/jcemcr/luac014.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Introduction
Carnitine Palmitoyl Transferase-2 (CPT-2) is a mitochondrial enzyme involved in the pathway of long chain fatty acids. CPT-2 deficiency is a rare autosomal recessive disease. Except for neonatal and severe infantile hepatocardiomuscular forms, the myopathic form diagnosed at later ages often presents with attacks of muscle weakness and recurrent rhabdomyolysis attacks.
Clinical Case
A 27-year-old male patient who applied to the emergency department with complaints of pain all over the body, muscle weakness, nausea, vomiting, headache and decreased urine output in the last 2 days. He was consulted because of LDH: 456 U/L (0–248 U/L), CK: 5567 U/L (0–190 U/L), AST: 382 U/L (10–37), ALT: 89.8 U/L (10–40 U/L), creatinine: 1.23 mg/dL (0–1,2 mg/dL). He was interned with the prediagnosis of acute kidney injury secondary to rhabdomyolysis. It was learned that he had been fasting for 2 days and working at an intense physical pace. There were intensive care hospitalizations due to rhabdomyolysis at the age of 16 and 24 years and Reye's syndrome at the age of 15. It was not diagnosed at that time. His mother's cousin when he was 15 had sudden cardiac death. On physical examination, he was conscious and his general condition was poor. Blood pressure: 141/100mmHg, pulse: 76/min, and fever: 37.4. There were 4/5 muscle weakness in bilateral lower extremity proximal muscles 3/5, distal muscles 4/5, upper extremity proximal and distal muscles 4/5. Pre-diagnoses of very long chain fatty acid dehydration deficiency, CPT-2 deficiency, glutaric acidemia type-2 were considered, IV hydration and riboflavin 3×100mg, coenzyme-Q 2×100mg, carnitine 2×1gr mitochondrial cocktail were started. Tandem Mass and urine amino acid levels were requested from the patient who was in the attack period. During his hospitalization, he had increases of acute phase reactants and respiratory symptoms, Covid PCR+ was detected. Liver function tests increased under favipravir treatment. In the follow-up, the values of CK, creatinine and liver function tests decreased with hydration. Homozygous c.338C>T(p.Ser113Leu) mutation was detected in the CPT-2 gene.
Conclusion
CPT-2 deficiency should be kept in mind as a rare cause of increased muscle weakness after fasting, intense exercise, and all infections, especially Covid and other upper respiratory tract infections. Intense hydration and mitochondrial cocktail therapy should be added to the patient until the diagnosis is clarified.
Collapse
Affiliation(s)
- Seçkin Akçay
- Department of Endocrinology and Metabolism Diseases, Marmara University , Istanbul , Turkey
| | | | - Dilek Yavuz
- Department of Endocrinology and Metabolism Diseases, Marmara University , Istanbul , Turkey
| |
Collapse
|
4
|
Avınca Ö, Taş M, Karakoç Y, Yavuz D, Deveci E. Effects of thymoquinone on spinal cord injury in rats. Arch Ital Biol 2022; 160:147-157. [PMID: 36881916 DOI: 10.12871/000398292022344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
PURPOSE Spinal cord injury (SCI) is a condition that causes disturbances in normal sensory, motor, and autonomic functions. During SCI, damages occur such as, contusion, compression, distraction. The aim of this study was to investigate effects of the antioxidative thymoquinone on neuron and glia cells in SCI biochemically, immunohistochemically and ultrastructurally. METHODS Male Sprague-Dawley rats were divided into Control, SCI and SCI + Thymoquinone groups. After T10- T11 laminectomy was performed, a metal weight of 15 grams was left down the spinal tube for spinal damage. Immediately after the trauma, the muscles and skin incision were sutured. Thymoquinone was given to the rats by gavage as 30mg/kg/21days. Tissues fixed in 10% formaldehyde, embedded in paraffin wax and immunstained with Caspase-9 and phosphorylated signal transducer and activator of transcription 3 (pSTAT-3) antibodies. Remaining were stored at -80oC for biochemistry. Frozen spinal cord tissues were placed in a phosphate buffer solution and homogenized, centrifuged then used to measure malondialdehyde (MDA) levels, glutathione peroxidase (GSH) and Myeloperoxidase (MPO). RESULTS In the SCI group, MDA, MPO, neuronal degeneration, vascular dilatation, inflammation, apoptotic appearance in the nucleus, loss of membrane and cristae in mitochondria, and dilatation in the endoplasmic reticulum were observed due to degeneration in the neuron structure. In the electron microscopic examination of the trauma + thymoquinone group, the membranes of the nuclei of the glial cells were thick and euchromatin, and mitochondria were shortened in length. In the SCI group, pyknosis and apoptotic changes were observed in neuronal structures and nuclei of glia cells in the substantia grisea and substantia alba region, along with positive Caspase-9 activity. An increase in Caspase-9 activity was observed in endothelial cells in blood vessels. In the SCI + thymoquinone group, Caspase-9 expression was positive in some of the cells in the ependymal canal while the cuboidal cells showed a negative Caspase-9 reaction in the majority. A few degenerated neurons in the substantia grisea region showed a positive reaction with Caspase-9. In SCI group, pSTAT-3 expression was positive in degenerated ependymal cells, neuronal structures, and glia cells. pSTAT-3 expression was positive in the endothelium and surrounding aggregated cells of the enlarged blood vessels. In the SCI+ thymoquinone group, pSTAT-3 expression was negative in most of the bipolar and multipolar neuron structures and glial cells in ependymal cells, enlarged blood vessel endothelial cells. CONCLUSIONS It has been thought that thymoquinone application in spinal cord injuries may be an antioxidant that can be recommended as an alternative treatment in suppressing the apoptosis of neural cells by significantly reducing the inflammation process.
Collapse
Affiliation(s)
| | | | | | | | - E Deveci
- Dicle University, Medical School, Chief of Histology and Embryology Department, Diyarbakır, Turkey - E-mail:
| |
Collapse
|
5
|
Aydoğan-Coşkun B, Ercan M, Akbulut M, Çoklar H, Seymen M, Yavuz D, Kurtar E, Yavuz N, Süheri S, Türkmen Ö. Influence of grafting on fatty acid profile and some physicochemical properties of watermelon seed and seed oil. grasasaceites 2022. [DOI: 10.3989/gya.0784211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study aimed to investigate the effects of grafting on the fatty acid profile and some physicochemical properties of watermelon seed and seed oil. The ‘Crimson Tide’ cultivar was used as the scion while two wild watermelon (Citrullus lanatus var. citroides (A1 and A2)), one Lagenaria siceraria (A3) and one Cucurbita maxima Duchesne x Cucurbita moschata Duchesne (A4) were used as rootstocks. The use of rootstock significantly influenced the fatty acid profile and the physical parameters of seeds and seed oils. The highest linoleic acid ratio was found in the seed oil from A1 and A2, the oil from A3 had the highest oleic acid ratio. The results showed that the content and acid value in seed oils were improved, and that total phenolic compounds and antioxidant activity of both seed and oil were decreased by grafting. Wild rootstocks can be used in watermelon cultivation to obtain a watermelon seed which is rich in linoleic acid.
Collapse
|
6
|
Otçu S, Atiç EN, Yavuz D. Investigation of FAS and IL-6 Expression in Placentas with HELLP Syndrome. INT J MORPHOL 2022. [DOI: 10.4067/s0717-95022022000501228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
7
|
Bekir SA, Yalcinsoy M, Gungor S, Tuncay E, Akyil FT, Sucu P, Yavuz D, Boga S. Prognostic value of inflammatory markers determined during diagnosis in patients with sarcoidosis: chronic versus remission. Rev Assoc Med Bras (1992) 2021; 67:1575-1580. [DOI: 10.1590/1806-9282.20210627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 08/30/2023] Open
|
8
|
Yazici D, Sunbul M, Yasar M, Deyneli O, Yavuz D. Is there an increased cardiovascular risk in patients with prolactinoma? A challenging question. J Clin Ultrasound 2021; 49:870-877. [PMID: 34131923 DOI: 10.1002/jcu.23030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 04/28/2021] [Accepted: 06/06/2021] [Indexed: 06/12/2023]
Abstract
PURPOSE Epicardial adipose tissue thickness (EATT) is considered to be a surrogate for visceral fat and a novel cardiovascular risk indicator. Hyperprolactinemia has been shown to be associated with increased cardiovascular risk. The aim was to evaluate the association between EATT, carotid intima media thickness (CIMT), and cardiac functions in patients with prolactinoma. METHODS Patients with the diagnosis of prolactinoma were included. The control group consisted of healthy age matched individuals with normal prolactin levels. Prolactin, fasting blood glucose (FBG), insulin, hemoglobin A1c (HbA1c), alanine aminotransferase (ALT), total cholesterol, triglycerides, and high (HDL) and low density lipoprotein (LDL) cholesterol were measured. EATT, CIMT, cardiac systolic, and diastolic functions were determined using echocardiography. RESULTS We evaluated 67 patients with prolactinoma (aged 40.7 ± 11.9 years, F/M: 51/16) and 57 controls (aged 42.5 ± 7.4 years, F/M: 36/21). Of the 67 patients, 24 had normal prolactin levels. FBG level was higher in prolactinoma patients than in controls. Patients and controls had similar HbA1c, HOMA-IR, ALT, total, HDL, LDL cholesterol, and triglycerides levels, and similar cardiac systolic and diastolic functions. Prolactinoma patients had greater EATT (3.0 ± 0.5 mm vs. 2.6 ± 0.4 mm, p < 0.001) and CIMT (0.57 ± 0.08 mm vs. 0.52 ± 0.04 mm, p = 0.03) than controls. EATT was correlated with body mass index, FBG, HbA1c, and triglyceride levels. CONCLUSIONS EATT and CIMT were greater in patients with prolactinoma, although they had normal cardiac systolic and diastolic functions.
Collapse
Affiliation(s)
- Dilek Yazici
- Section of Endocrinology and Metabolism, Koç University Medical School, Istanbul, Turkey
| | - Murat Sunbul
- Department of Cardiology, Marmara University School of Medicine, Istanbul, Turkey
| | - Mehmet Yasar
- Section of Endocrinology and Metabolism, Marmara University School of Medicine, Istanbul, Turkey
| | - Oguzhan Deyneli
- Section of Endocrinology and Metabolism, Koç University Medical School, Istanbul, Turkey
| | - Dilek Yavuz
- Section of Endocrinology and Metabolism, Marmara University School of Medicine, Istanbul, Turkey
| |
Collapse
|
9
|
Apaydın T, İmre E, Yavuz D. Determinants of remission in a case series of medullary thyroid carcinoma. Turk J Med Sci 2021; 51:2050-2056. [PMID: 33984892 DOI: 10.3906/sag-2011-281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/09/2021] [Indexed: 11/03/2022] Open
Abstract
Background/aim We aimed to present the clinical results of patients with medullary carcinoma under follow-up in our center and to determine parameters affecting remission and lymph node metastases. Material and methods A retrospective analysis was performed of the medical records of 27 patients with MTC who were followed up between 2004 and 2020. Results The mean age at diagnosis was 47.7 ± 14 years. The mean follow-up was 7.29 ± 4.9 years. Metastatic neck lymphadenopathy was detected in eight (29.6%) patients; none had distant metastasis at the time of diagnosis. The median tumor diameter was 1.50 (range: 0.4–6) cm. The median postoperative calcitonin level was 3.3 (range, 0.5–871) ng/L. Relapse occurred in 2 (range, 1–14) years after the first surgery in three (11.1%) patients. In the last visit, 7 (25.9%) patients had a structural incomplete response, and three (11.1%) patients had a biochemical incomplete response. Seventeen (59.3%) patients were in remission, no patients died of MTC or any other cause. Elevated postoperative calcitonin level was a significant prognostic parameter for remission (p = 0.12) and lymph node metastasis (p < 0.001). Conclusion Elevated postoperative calcitonin level and perithyroid soft tissue invasion were significant prognostic parameters for remission and lymph node metastasis. Postoperative calcitonin level and calcitonin doubling time should be considered for prognostic and survival risk assessments.
Collapse
Affiliation(s)
- Tuğçe Apaydın
- Department of Endocrinology and Metabolism, Faculty of Medicine, Marmara University, İstanbul, Turkey
| | - Eren İmre
- Department of Endocrinology and Metabolism, Faculty of Medicine, Marmara University, İstanbul, Turkey
| | - Dilek Yavuz
- Department of Endocrinology and Metabolism, Faculty of Medicine, Marmara University, İstanbul, Turkey
| |
Collapse
|
10
|
Turkyilmaz A, Kurnaz E, Alavanda C, Yarali O, Kartal Baykan E, Yavuz D, Cayir A, Ata P. The Spectrum of Low-Density Lipoprotein Receptor Mutations in a Large Turkish Cohort of Patients with Familial Hypercholesterolemia. Metab Syndr Relat Disord 2021; 19:340-346. [PMID: 33794673 DOI: 10.1089/met.2021.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Monogenic hypercholesterolemia with Mendelian inheritance is a heterogeneous group of diseases that are characterized by elevated plasma low-density lipoprotein cholesterol (LDL-C) levels, and the most common form of this disorder is autosomal-dominant familial hypercholesterolemia (FH). Methods: A total of 104 index cases with the clinical diagnosis of FH were included in this study. Low-density lipoprotein receptor (LDLR) was sequenced using the Sanger sequencing method. Results: Pathogenic/likely pathogenic variants were detected in LDLR in 55 of the 104 cases (mutation detection rate = 52.8%). Thirty different variants were detected in LDLR, three of which were novel. The total cholesterol and LDL-C values of the patients in the group of premature termination codon (PTC) mutation carriers were significantly higher than those of the patients in the group of non-PTC mutation carriers. A total of 87 patients (17 pediatric and 70 adult cases) were diagnosed with cascade genetic screening. Statin treatment was recommended to all 87 patients and was accepted and initiated in 70 of these patients. Conclusions: This study is the largest patient cohort that evaluated FH cases in the Turkish population. Herein, we revealed the LDLR mutation spectrum for a Turkish population and compared the cases in the context of genotype-phenotype correlation. Genetic screening of individuals with suspected FH not only helps to establish their diagnosis, but also facilitates early diagnosis and treatment initiation in other family members through cascade screening.
Collapse
Affiliation(s)
- Ayberk Turkyilmaz
- Department of Medical Genetics, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Erdal Kurnaz
- Department of Pediatric Endocrinology, Dr. Sami Ulus Obstetrics and Gynecology, Children's Health and Disease Training and Research Hospital, Ankara, Turkey
| | - Ceren Alavanda
- Department of Medical Genetics, Marmara University School of Medicine, Istanbul, Turkey
| | - Oguzhan Yarali
- Department of Medical Genetics, Erzurum City Hospital, Erzurum, Turkey
| | | | - Dilek Yavuz
- Department of Endocrinology, Marmara University School of Medicine, Istanbul, Turkey
| | - Atilla Cayir
- Department of Pediatric Endocrinology, Erzurum City Hospital, Erzurum, Turkey
| | - Pinar Ata
- Department of Medical Genetics, Marmara University School of Medicine, Istanbul, Turkey
| |
Collapse
|
11
|
Ergun T, Yazici V, Yavuz D, Seckin-Gencosmanoglu D, Ozen G, Salman A, Direskeneli H, Inanc N. Advanced Glycation End Products, a Potential Link between Psoriasis and Cardiovascular Disease: A Case-control Study. Indian J Dermatol 2019; 64:201-206. [PMID: 31148858 PMCID: PMC6537697 DOI: 10.4103/ijd.ijd_396_18] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Context Advanced glycation end products (AGEs) promote oxidative stress and inflammation by altering structure and function of proteins. They are excessively produced mainly in hyperglycemia, chronic inflammation and are involved in the development of atherosclerosis and cardiovascular disease. Aims The aim of this study was to investigate whether skin AGEs levels were increased and had relation to premature atherosclerosis in patients with psoriasis. Subjects and Methods Fifty-two psoriasis patients and 20 healthy controls (HC) were included. AGEs were determined by skin autofluorescence (SAF) analysis. High-sensitive C-reactive protein (hsCRP) and carotid intima-media thickness (CIMT) were also investigated. Physical activity and dietary patterns were determined. Statistical Analysis Used Fisher's exact test, two-sample t-tests, Mann-Whitney-U test, Pearson correlation, Spearman correlation, and Wilcoxon test. Results SAFs were increased in psoriasis patients (1.8 arbitrary units [AUs]) compared to that in HC (1.6 AUs) (P = 0.057). Median CIMT values of HC and psoriasis groups were 0.43 (0.28-0.79), and 0.59 (0.44-0.98) respectively and the differences were significant (P = 0.001); hsCRP levels were not different between groups. Conclusions Skin AGE accumulation was found to have a correlation with CIMT in psoriasis patients providing evidence for the role of AGEs in premature atherosclerosis.
Collapse
Affiliation(s)
- Tulin Ergun
- Department of Dermatology, Marmara University School of Medicine, Istanbul, Turkey
| | - Vildan Yazici
- Department of Dermatology, Gebze Medical Park Hospital, Kocaeli, Turkey
| | - Dilek Yavuz
- Department of Endocrinology, Marmara University School of Medicine, Istanbul, Turkey
| | | | - Gulsen Ozen
- Department of Rheumatology, Marmara University School of Medicine, Istanbul, Turkey
| | - Andac Salman
- Department of Dermatology, Marmara University School of Medicine, Istanbul, Turkey
| | - Haner Direskeneli
- Department of Rheumatology, Marmara University School of Medicine, Istanbul, Turkey
| | - Nevsun Inanc
- Department of Rheumatology, Marmara University School of Medicine, Istanbul, Turkey
| |
Collapse
|
12
|
Acartürk Tunçay E, Karakurt Z, Aksoy E, Saltürk C, Gungor S, Ciftaslan N, Irmak İ, Yavuz D, Ocakli B, Adıgüzel N. Eosinophilic and non-eosinophilic COPD patients with chronic respiratory failure: neutrophil-to-lymphocyte ratio as an exacerbation marker. Int J Chron Obstruct Pulmon Dis 2017; 12:3361-3370. [PMID: 29200843 PMCID: PMC5703161 DOI: 10.2147/copd.s147261] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Aim Increased dyspnea, sputum volume, and purulence are subjective symptoms in COPD patients. To diagnose COPD exacerbations with chronic respiratory failure (CRF) and to assess the requirement for antibiotic treatment, physicians require more objective criteria. We aimed to investigate whether neutrophil-to-lymphocyte ratio (NLR) can be used as an infectious exacerbation marker in COPD patients with CRF. Patients and methods This retrospective cross-sectional study was performed in the intensive care outpatient clinic of a tertiary training hospital between 2014 and 2015. Patients admitted with CRF due to COPD and who had complete blood count (CBC) results were enrolled. CBC results and C-reactive protein (CRP) levels were obtained from the hospital online database. The “modified exacerbation model (MEM)” was defined as follows: exacerbation A, leukocytes ≥12,000/mm3, CRP >10 mg/dL; exacerbation B, leukocytes ≥10,000/mm3, CRP >10 mg/dL; exacerbation C, leukocytes ≥10,000/mm3, CRP >8 mg/dL; exacerbation D, leukocytes ≥10,000/mm3, CRP >5 mg/dL. The cutoff value of NLR was defined for each model. Patients were split into two groups based on the NLR cutoff value according to the “NLR exacerbation model” and further subgrouped according to peripheral eosinophil percentage (eosinophils ≥2% and <2%) and compared with the MEM. Results A total of 1,066 COPD patients (430 females, 40.3%), with a mean age of 66±13 years, were included. A NLR cutoff value of 3.54 (NLR ≥3.54, n=366, 34%) showed the highest sensitivity and specificity for model A (78%, 69%), model B (63%, 71%), model C (61%, 72%), and model D (58%, 72%). Peripheral eosinophilia (PE ≥2%) was present in 48 patients (4.5%). The ratio of patients with PE <2% in the NLR ≥3.54 group was significantly higher in the MEM (P<0.001). Conclusion The NLR presents an attractive option as an exacerbation marker in COPD patients with CRF due to its simplicity and cost-effectiveness. In COPD patients with CRF, where the NLR is ≥3.54, PE levels are <2%, and subjective symptoms are present, antibiotic treatment should be considered.
Collapse
Affiliation(s)
- Eylem Acartürk Tunçay
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Zuhal Karakurt
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Emine Aksoy
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Cuneyt Saltürk
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Sinem Gungor
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Nezihe Ciftaslan
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - İlim Irmak
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Dilek Yavuz
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Birsen Ocakli
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Nalan Adıgüzel
- Respiratory Intensive Care Unit, Sureyyapaşa Chest Diseases and Thoracic Surgery Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| |
Collapse
|
13
|
Deyneli O, Yavuz D, Velioglu A, Cacina H, Aksoy N, Haklar G, Taga Y, Akalin S. Effects of ACE Inhibition and Angiotensin II Receptor Blockade on Glomerular Basement Membrane Protein Excretion and Charge Selectivity in Type 2 Diabetic Patients. J Renin Angiotensin Aldosterone Syst 2016; 7:98-103. [PMID: 17083064 DOI: 10.3317/jraas.2006.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Angiotensin-converting enzyme (ACE) inhibitors may reduce urinary albumin excretion (UAE) by decreasing glomerular pressure and increasing glomerular charge selectivity through preservation of glycosaminoglycans. The effect of Angiotensin II antagonism on glomerular charge selectivity remains to be determined. The aim of this study was to compare the effects of an AT1 blocker losartan and an ACE inhibitor (ACE-I) enalapril on UAE, extracellular matrix proteins, glycosaminoglycan excretion (UGAG) and red blood cell anionic charge (RBCCh) which are the indirect markers of glomerular basement membrane anionic content in hypertensive Type 2 diabetic patients. Twenty-four patients were randomised into two groups and received either enalapril (5—20 mg/d) or losartan (50—100 mg/d). All parameters were measured at baseline and after six months of treatment. At the end of six months, systolic and diastolic blood pressures (BP), UAE rates, UGAG excretion and RBCCh were significantly and equally reduced in both treatment groups compared with baseline. RBCCh was negatively correlated with UAE (r=-0. O 57, p<0.0001) and UGAG excretion (r=-0.57, Rp<0.0001); UAE was correlated with UGAG excretion (r=0.58, p<0.0001). In conclusion, enalapril and losartan treatment were equally effective in reducing BP, UAE as well as UGAG excretion and preserving RBCCh in hypertensive Type 2 diabetic patients. ACE inhibition and AT1-receptor blockade may have favourable effects on preserving glomerular anionic content in hypertensive diabetic patients.
Collapse
Affiliation(s)
- Oguzhan Deyneli
- Section of Endocrinology and Metabolism Department of Internal Medicine, Marmara University, Istanbul, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Gunduz A, Kiziltan M, Kiziltan G, Yavuz D, Karadeniz D. Somatosensory and auditory startle reaction in patients with movement disorders. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
15
|
Haliloğlu Ö, Kasaci T, Yavuz D. Seasonal vitamin D status and endothelial function in healthcare workers. Turk J Med Sci 2016; 46:72-8. [PMID: 27511337 DOI: 10.3906/sag-1403-114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 06/18/2015] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM Healthcare workers have long working hours indoors and are at risk of vitamin D deficiency. The aim of this study was to determine seasonal vitamin D status and its relationship with early atherosclerotic markers, endothelial function, and carotid intima-media thickness (CIMT) in healthcare workers of Marmara University Hospital, İstanbul. MATERIALS AND METHODS One hundred and ninety healthy volunteer healthcare workers and 66 nonmedical volunteers of Marmara University Hospital were included in the study and 25-hydroxyvitamin D (25(OH)D), calcium, intact parathyroid hormone (PTH), endothelial function, and CIMT were measured twice during winter and summer seasons. RESULTS Mean vitamin D levels were 20 ng/mL in summer and 16.4 ng/mL in winter. Out of the healthcare workers, 48.9% were vitamin D deficient at the end of summer and 71.5% in winter. Flow-mediated dilation (FMD) values were similar in both groups in both seasons; however, FMD values of 64 healthcare workers in summer were significantly higher than in winter. Serum 25(OH)D was positively associated with FMD (r = 0.1797, P = 0.0441) and negatively correlated with serum PTH (r = -0.2459, P < 0.0001). A negative correlation between FMD and serum PTH (r = -0.1757, P = 0.0473) was observed. CONCLUSION Vitamin D levels of healthcare workers are very low, even in summer time. Healthcare workers must be considered a group at major risk for vitamin D deficiency.
Collapse
Affiliation(s)
- Özlem Haliloğlu
- Department of Internal Medicine, Faculty of Medicine, Marmara University, İstanbul, Turkey
| | - Tolga Kasaci
- Department of Biochemistry, Faculty of Medicine, Marmara University, İstanbul, Turkey
| | - Dilek Yavuz
- Department of Endocrinology and Metabolism, Faculty of Medicine, Marmara University, İstanbul, Turkey
| |
Collapse
|
16
|
Ekinci C, Tahaoglu AE, Balsak D, Deveci E, Yavuz D, Togrul C, Karaman E. Expression of Human Chorionic Gonadotropin (ßhCG) in Pre-eclamptic Placenta. INT J MORPHOL 2015. [DOI: 10.4067/s0717-95022015000200031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Ezel T, Kocyigit Y, Deveci E, Atamer Y, Sermet A, Uysal E, Aktaş A, Yavuz D. Biochemical and Histopathological Investigation of Resveratrol, Gliclazide, and Losartan Protective Effects on Renal Damage in a Diabetic Rat Model. Anal Quant Cytopathol Histpathol 2015; 37:187-198. [PMID: 26173356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To compare the protective effects of resveratrol, gliclazide, and losartan, at biochemical and histopathological levels, on the rat kidney with experimentally induced type 1 diabetes. STUDY DESIGN A total of 35 adult male Wistar rats were divided into control, diabetic, diabetic gliclazide, diabetic resveratrol, and diabetic losartan groups. For biochemical analysis, based on one of the kidneys, superoxide dismutase, malondialdehyde, and catalase were used for measurement. The other kidney was stained for histochemical and immunohistochemical markers and examined by light microscopy. RESULTS Nephropathy due to diabetes was developed at the end of the third week in the diabetic group: in the glomeruli, contraction from Bowman distance, diffuse mesangial matrix increasing and tubular dilation, and cytoplasmic vacuolar changes were observed. In tubulointerstitial areas, some tubular structures, an increased expression of VEGF was observed. CONCLUSION As a result, in diabetic rats, the effects of gliclazide, resveratrol, and losartan cure were equivalent to each other according to the parameters which were followed. Resveratrol, gliclazide, and losartan significantly protected renal glomeruli and the proximal and distal tubules.
Collapse
|
18
|
Yavuz D, Balsak D, Ekinci C, Tahaoglu AE, Togrul C, Görük N, Aktas A, Karaman E. Expression of VEGF and CD68 in the Placenta of Gestational Diabetic Mothers (Immunohistochemistry and Ultrastructural Study). INT J MORPHOL 2015. [DOI: 10.4067/s0717-95022015000200018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
19
|
Yavuz D, Gündüz A, Ertan S, Apaydın H, Şifoğlu A, Kiziltan G, Kiziltan ME. Specific brainstem and cortico-spinal reflex abnormalities in coexisting essential tremor and Parkinson's disease (ET-PD). Neurophysiol Clin 2015; 45:143-9. [PMID: 25892331 DOI: 10.1016/j.neucli.2015.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 10/15/2014] [Accepted: 01/04/2015] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE We aimed to analyze functional changes at brainstem and spinal levels in essential tremor (ET), Parkinson's disease (PD) and coexisting essential tremor and Parkinson's disease (ET-PD). PATIENTS AND METHOD Age- and gender-matched patients with tremor (15 ET, 7 ET with resting tremor, 25 ET-PD and 10 PD) and 12 healthy subjects were enrolled in the study. Diagnosis was established according to standardized clinical criteria. Electrophysiological studies included blink reflex (BR), auditory startle reaction (ASR) and long latency reflex (LLR). RESULTS Blink reflex was normal and similar in all groups. Probability of ASR was significantly lower in ET-PD group whereas it was similar to healthy subjects in ET and PD (P<0.001). LLR was recorded during voluntary activity in all three groups. LLR II was more common in ET, PD and ET-PD groups. LLR III was far more common in the PD group (n=3, 13.6% in ET; n=4, 16.0% in ET-PD and n=7, 46.7% in PD; p=0.037). CONCLUSIONS Despite the integrity of BR pathways, ASR and LLR show distinctive abnormalities in ET-PD. In our opinion, our electrophysiological findings support the hypothesis that ET-PD is a distinct entity.
Collapse
Affiliation(s)
- D Yavuz
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| | - A Gündüz
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey.
| | - S Ertan
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| | - H Apaydın
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| | - A Şifoğlu
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| | - G Kiziltan
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| | - M E Kiziltan
- Istanbul University, Cerrahpasa School of Medicine, Department of Neurology, 34098 K.M.Pasa, Istanbul, Turkey
| |
Collapse
|
20
|
Yazıcı D, Özben B, Toprak A, Yavuz D, Aydın H, Tarçın Ö, Deyneli O, Akalın S. Effects of restoration of the euthyroid state on epicardial adipose tissue and carotid intima media thickness in subclinical hypothyroid patients. Endocrine 2015; 48:909-15. [PMID: 25108389 DOI: 10.1007/s12020-014-0372-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 07/24/2014] [Indexed: 10/24/2022]
Abstract
Epicardial adipose tissue (EAT) thickness is a novel cardiovascular risk indicator, whereas carotid intima media thickness (CIMT) is a known marker of subclinical atherosclerosis. The aim of this study was to measure EAT thickness and CIMT in subclinical hypothyroid (SCH) patients and to determine the effect of restoration of the euthyroid state on these variables. The study included 43 patients with SCH (mean age: 35.2±10.7 years; F-M ratio: 42:1) and 30 healthy controls (mean age: 34.5±8.2 years; F-M ratio: 25:5). EAT thickness and CIMT were measured via conventional echocardiography and ultrasonography. Among the patients, 23 were followed up with L-thyroxine replacement until restoration of the euthyroid state and re-evaluated 6 months after baseline. Basal EAT thickness was higher in the SCH patients than in the controls (3.2±0.7 vs. 2.3±0.3 mm-p<0.0001), whereas CIMT was similar in both groups (0.50±0.09 vs. 0.48±0.04 mm). EAT thickness was correlated with CIMT in the patient group (r=0.39, p=0.01), but this correlation was not evident based on multivariate analysis when corrected for age and body mass index (r2=0.47 and p=0.0001 for the model). In the follow-up patient subgroup, both EAT thickness and CIMT decreased significantly following L-thyroxine treatment, when normal TSH levels were attained (3.4±0.7 vs. 2.3±0.5 mm-p=0.007 and 0.51±0.09 vs. 0.46±0.07 mm-p=0.01, respectively). EAT thickness was greater in the SCH patients than in controls, whereas CIMT was similar in both groups. Restoration of the euthyroid state with L-thyroxine treatment was associated with significant decreases in EAT thickness and CIMT in the group of patients that received L-thyroxine treatment and, as such, might reduce the cardiovascular risk associated with SCH.
Collapse
Affiliation(s)
- Dilek Yazıcı
- Section of Endocrinology and Metabolism, Marmara University Medical School, İskele Sok. Hüseyin Ayaz Apt. No:22/8 Caddebostan/Istanbul, Istanbul, Turkey,
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Ekinci C, Tahaoglu AE, Yavuz D, Deveci E, Aktas A, Yilmaz T, Yumusak Ö, Yükselmis O. Ultrastructural Effects of the Propineb on Brain of Fetuses During Rat Pregnancy. INT J MORPHOL 2014. [DOI: 10.4067/s0717-95022014000400054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
22
|
Sula B, Ekinci C, Uçak H, Uçmak D, Akkurt ZM, Yavuz D, Arica M, Deveci E. Immunohistochemical and histopathological changes in the skin of rats after maneb application. Anal Quant Cytopathol Histpathol 2014; 36:324-329. [PMID: 25803990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To determine the immunohistochemical and histopathological changes in facial skin after exposure to maneb (manganese ethylene bisdithiocarbamate), a fungicidal dithiocarbamate pesticide. STUDY DESIGN In the experimental group maneb was administered by inhalation to 10 male Wistar albino rats for 5 days each week for 3 weeks. As a biological control, the control group (n = 10) received distilled water by spray for the same time period. The experiment was terminated after 3 weeks. Sections of rat facial skin were examined histopathologically. RESULTS In the experimental group, microscopic examination of facial skin revealed degeneration of the epidermis, detection of mild inflammatory reaction, and vascular dilation in the connective tissue. Hair follicles and degenerative changes were observed in the deeper parts. In the experimental group, dilation of the blood vessels in the dermis and hemorrhage were supported by an increase in CD34 expression. In addition, a reduction in the number of melanocytes (hypopigmentation) was observed in the hair follicles and epidermis, along with a decrease in the expression of CD117. CONCLUSION Epidermal degeneration, intradermal cell infiltration, vascular changes, and reduction in the number of melanocytes in the follicle and content of cytokeratin in both the epidermis and hair follicle keratinocytes were detected after maneb application. These findings may have important implications in the association with main signaling pathways, including keratinocyte proliferation and differentiation. Disruption of these pathways may cause some dermatoses.
Collapse
|
23
|
Hazar A, Tokgöz F, Erdem İ, Ulusan N, Akdoğan MF, Öneş C, Çakar Ş, Irmak İ, Kasapoğlu US, Yavuz D. A rare reason of pleurisy: Adult-onset still disease. J Clin Exp Invest 2014. [DOI: 10.5799/ahinjs.01.2014.02.0417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
24
|
Altunoglu A, Yavuz D, Canoz MB, Yavuz R, Karakaş LA, Bayraktar N, Colak T, Sezer S, Ozdemir FN, Haberal M. Relationship Between Inflammation and Sex Hormone Profile in Female Patients Receiving Different Types of Renal Replacement Therapy. Transplant Proc 2014; 46:1585-90. [DOI: 10.1016/j.transproceed.2014.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/01/2014] [Indexed: 01/23/2023]
|
25
|
Akgun Z, Atasoy BM, Ozen Z, Yavuz D, Gulluoglu B, Sengoz M, Abacioglu U. V30 as a predictor for radiation-induced hypothyroidism: a dosimetric analysis in patients who received radiotherapy to the neck. Radiat Oncol 2014; 9:104. [PMID: 24885512 PMCID: PMC4029831 DOI: 10.1186/1748-717x-9-104] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 04/27/2014] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION The purpose of this study is to evaluate the possible predictors of thyroid disorders after neck radiotherapy, with a focus on radiation dose-volume factors. METHODS Thyroid function was measured in 100 patients who had received radiotherapy to the neck, including the thyroid. All radiation-induced thyroid dysfunctions were determined with an endpoint of abnormal thyroid stimulating hormone (TSH), free triiodothyronine (fT3) and thyroxine (fT4) and thyroid peroxidase antibodies and (TPA). The total volume of the thyroid, mean radiation dose to the thyroid (Dmean) and thyroid volume percentage that received radiation doses of 10-50 Gy (V10-V50) were calculated in all patients. The evaluated risk factors for thyroid dysfunction included dose-volume parameters, sex, age, previous surgery, chemotherapy and comorbidity. RESULTS There were 52 patients with hypothyroidism and V30 (p = 0.03), thyroid volume (p = 0.01) and Dmean (p = 0.03) appeared to be correlated with hypothyroidism in univariate analysis. However, there was not association found in multivariate analysis for these factors. CONCLUSIONS Thyroid disorders after radiation therapy to the neck still represent a clinically underestimated problem. V30 may be a useful tool for evaluating the risk of hypothyroidism when determining an individual patient's treatment.
Collapse
Affiliation(s)
- Zuleyha Akgun
- Department of Radiation Oncology, Bezmi Alem Vakif University Medical School, Adnan Menderes Bulvari, 34093 Istanbul, Fatih, Turkey.
| | | | | | | | | | | | | |
Collapse
|
26
|
Poesen R, Viaene L, Bammens B, Claes K, Evenepoel P, Meijers B, Bozic M, De Pablo C, Alvarez A, Sanchez-Nino MD, Ortiz A, Fernandez E, Valdivielso JM, Speer T, Zewinger S, Holy EW, Stahli BE, Triem S, Cvija H, Rohrer L, Seiler S, Heine GH, Jankowski V, Jankowski J, Camici G, Akhmedov A, Luscher TF, Tanner FC, Fliser D, Isoyama N, Leurs P, Qureshi AR, Anderstam B, Heimburger O, Barany P, Stenvinkel P, Lindholm B, Bolasco P, Palleschi S, Rossi B, Atti M, Amore A, Coppo R, Loiacono E, Ghezzi PM, Palladino G, Caiazzo M, Di Napoli A, Tazza L, Franco F, Chicca S, Bossola M, Di Lallo D, Michelozzi P, Davoli M, Lucisano S, Arena A, Lupica R, Cernaro V, Trimboli D, Aloisi C, Montalto G, Santoro D, Buemi M, Burtey S, Poitevin S, Darbousset R, Gondouin B, Dubois C, Erkmen Uyar M, Bal Z, Bayraktar N, Gurlek Demirci B, Sayin B, Sezer S, Rogacev K, Zawada A, Emrich I, Seiler S, Bohm M, Fliser D, Woollard K, Heine G, Gbandjaba NY, Ghalim N, Saile R, Khalil A, Fujii H, Yamashita Y, Yonekura Y, Nakai K, Kono K, Goto S, Sugano M, Goto S, Ito Y, Nishi S, Leurs P, Meuwese C, Carrero JJ, Qureshi AR, Anderstam B, Barany P, Heimburger O, Stenvinkel P, Lindholm B, Riccio E, Sabbatini M, Bellizzi V, Pisani A, Svedberg O, Stenvinkel P, Qureshi AR, Barany P, Heimburger O, Leurs P, Isoyama N, Lindholm B, Anderstam B, Barreto-Silva MI, Lemos C, Costa-Silva F, Mendes R, Bregman R, Barreto - Silva MI, Lemos C, Vargas S, Barja-Fidalgo TC, Bregman R, Sidoti A, Lusini ML, Biagioli M, Sereni L, Ghezzi PM, Caiazzo M, Palladino G, Kara E, Ahbap E, Basturk T, Koc Y, Sakaci T, Sahutoglu T, Sevinc M, Akgol C, Unsal A, Snaedal S, Qureshi AR, Carrero JJ, Heimburger O, Stenvinkel P, Barany P, Paliouras C, Haviatsos T, Lamprianou F, Papagiannis N, Ntetskas G, Roufas K, Karvouniaris N, Anastasakis E, Moschos N, Alivanis P, Santoro D, Ingegneri MT, Vita G, Pisacane A, Bellinghieri G, Savica V, Buemi M, Lucisano S, Kim HK, Kim SC, Kim MG, Jo SK, Cho WY, Altunoglu A, Yavuz D, Canoz MB, Yavuz R, Karakas LA, Bayraktar N, Colak T, Sezer S, Ozdemir FN, Haberal M, Akbasli AC, Keven K, Erbay B, Nebio lu S, Loboda O, Dudar I, Krot V, Alekseeva V, Grabulosa CC, De Carvalho JTG, Manfredi SR, Canziani ME, Quinto BMR, Peres AT, Batista MC, Cendoroglo M, Dalboni MA, Zingerman B, Azoulay O, Gamzo Z, Rozen-Zvi B, Stefan G, Capusa C, Stancu S, Ilyes A, Viasu L, Mircescu G, Yilmaz MI, Solak Y, Saglam M, Cayci T, Acikel C, Unal HU, Eyileten T, Oguz Y, Sari S, Carrero JJ, Stenvinkel P, Covic A, Kanbay M, Kim YN, Park K, Gwoo S, Shin HS, Jung YS, Rim H, Rhew HY, Gok M, Kurt Y, Unal HU, CetInkaya H, Karaman M, EyIeten T, Vural A, Yilmaz MI, Oguz Y, Flisi Ski M, Brymora A, StrozEcki P, Stefa Ska A, Manitius J, Donderski R, Mi Kowiec-Wi Niewska I, Kretowicz M, Johnson R, Kami Ska A, Junik R, Siodmiak J, Stefa Ska A, Odrowaz-Sypniewska G, Manitius J, Tasic D, Radenkovic S, Kocic G, Wyskida K, Spiechowicz-Zato U, Rotkegel S, Ciepal J, Klein D, Bozentowicz-Wikarek M, Brzozowska A, Olszanecka-Glinianowicz M, Chudek J, Dimitrijevic Z, Cvetkovic T, Mitic B, Paunovic K, Paunovic G, Stojanovic M, Velickovic-Radovanovic R, Gliga ML, Gliga PM, Stoica C, Tarta D, Dogaru G. CKD NUTRITION, INFLAMMATION AND OXIDATIVE STRESS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
27
|
Yavuz D, Acar FO, Yavuz R, Canoz M, Altunoglu A, Sezer S, Durukan E. Male Sexual Function in Patients Receiving Different Types of Renal Replacement Therapy. Transplant Proc 2013; 45:3494-7. [DOI: 10.1016/j.transproceed.2013.09.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
28
|
Kiziltan M, Yavuz D, Gunduz A, Ertan S, Şifoğlu A, Kiziltan G. Reflex studies in patients with essential/INS; tremor–/INS;Parkinson's disease: Comparisons to Parkinson's/INS; disease and essential tremor. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
29
|
Yazici D, Yavuz D, Tarcin O, Sancak S, Deyneli O, Akalin S. Vitamin D receptor gene ApaI, TaqI, FokI and BsmI polymorphisms in a group of Turkish patients with Hashimoto's thyroiditis. MINERVA ENDOCRINOL 2013; 38:195-201. [PMID: 23732374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM Previous studies have suggested an influence of vitamin D receptor polymorphisms on the development of autoimmune thyroid disease in different ethnic populations. We aimed to investigate the distribution of vitamin D receptor (VDR) alleles in a group of Turkish patients with Hashimoto's thyroiditis (HT). METHODS One hundred and eleven patients (male/female: 5/106, 47.9±12.8 years) and 159 healthy controls (male/female: 21/138, 30.5±6.3 yrs) were included in the study. VDR gene FokI, BsmI, ApaI TaqI polymorphisms were examined using a polymerase chain reaction (PCR) -based restriction analysis. Serum levels of (thyroid-stimulating hormone) TSH, anti-thyroid peroxidase and anti-thyroglobulin levels were determined. RESULTS The VDR TaqI "TT" (59.5% in patients vs. 27.6% in controls; 95% confidence interval [CI]: 0.14-0.46) and FokI 'FF' genotypes (67.6% in patients vs. 44.6% in controls; 95% CI: 0.46-0.81) occurred more frequently in patients, while VDR "Tt" (56.6% in patients vs. 32.4% in controls 95% CI: 1.22-2.14) and "Ff" genotypes (25.2% in patients vs. 49.1% in controls 95% CI: 1.27-2.18) were more common in controls. There were no differences in the genotype frequencies of the ApaI and BsmI polymorphisms in cases and controls. The most common genotypes were "bbAaTTFF" in the thyroiditis group (12.6% patients vs. 5.6% in controls, P>0.05) and "BbAaTtFf" in the control group (6.3% patients vs. 22.2% in controls, P=0.002). CONCLUSION VDR gene TaqI TT and FokI FF genotypes are associated with increased risk of HT disease in our group of Turkish patients. BbAaTtFf genotype seems to be protective for HT disease in our population.
Collapse
Affiliation(s)
- D Yazici
- Marmara University Medical School, Section of Endocrinology and Metabolism Istanbul, Turkey.
| | | | | | | | | | | |
Collapse
|
30
|
Fujii T, Suzuki S, Shinozaki M, Tanaka H, Bell S, Cooper S, Lomonte C, Libutti P, Chimienti D, Casucci F, Bruno A, Antonelli M, Lisi P, Cocola L, Basile C, Negri A, Del Valle E, Zanchetta M, Zanchetta J, Di Vico MC, Ferraresi M, Pia A, Aroasio E, Gonella S, Mongilardi E, Clari R, Moro I, Piccoli GB, Gonzalez-Parra E, Rodriguez-Osorio L, Ortiz-Arduan A, de la Piedra C, Egido J, Perez Gomez MV, Tabikh AA, Afsar B, Kirkpantur A, Imanishi Y, Yamagata M, Nagata Y, Ohara M, Michigami T, Yukimura T, Inaba M, Bieber B, Robinson B, Mariani L, Jacobson S, Frimat L, Bommer J, Pisoni R, Tentori F, Ciceri P, Elli F, Brancaccio D, Cozzolino M, Adamczak M, Wiecek A, Kuczera P, Sezer S, Bal Z, Tutal E, Kal O, Yavuz D, Y ld r m I, Sayin B, Ozelsancak R, Ozkurt S, Turk S, Ozdemir N, Lehmann R, Roesel M, Fritz P, Braun N, Ulmer C, Steurer W, Dagmar B, Ott G, Dippon J, Alscher D, Kimmel M, Latus J, Turkvatan A, Balci M, Mandiroglu S, Seloglu B, Alkis M, Serin M, Calik Y, Erkula S, Gorboz H, Afsar B, Mandiroglu F, Kirkpantur A, Lindley E, Cruz Casal M, Rogers S, Pancirova J, Kernc J, Copley JB, Fouque D, Kiss I, Kiss Z, Szabo A, Szegedi J, Balla J, Ladanyi E, Csiky B, orkossy O, Torok M, Turi S, Ambrus C, Deak G, Tisler A, Kulcsar I, K d r V, Altuntas A, Akp nar A, Orhan H, Sezer M, Filiopoulos V, Manolios N, Arvanitis D, Pani I, Panagiotopoulos K, Vlassopoulos D, Rodriguez-Ortiz ME, Canalejo A, Herencia C, Martinez-Moreno JM, Peralta-Ramirez A, Perez-Martinez P, Navarro-Gonzalez JF, Rodriguez M, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Munoz-Castaneda JR, Almaden Y, Munoz-Castaneda JR, Peralta-Ramirez A, Rodriguez-Ortiz M, Herencia C, Martinez-Moreno J, Lopez I, Aguilera-Tejero E, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Rodriguez M, Almaden Y, Hanafusa N, Masakane I, Ito S, Nakai S, Maeda K, Suzuki H, Tsunoda M, Ikee R, Sasaki N, Sato M, Hashimoto N, Wang MH, Hung KY, Chiang CK, Huang JW, Lu KC, Lang CL, Okano K, Yamashita T, Tsuruta Y, Hibi A, Miwa N, Kimata N, Tsuchiya K, Nitta K, Akiba T, Sasaki N, Tsunoda M, Ikee R, Sato M, Hashimoto N, Harb L, Komaba H, Kakuta T, Suzuki H, Suga T, Fukagawa M, Kikuchi H, Shimada H, Karasawa R, Suzuki M, Zhelyazkova-Savova M, Gerova D, Paskalev D, Ikonomov V, Zortcheva R, Galunska B, Jean G, Deleaval P, Hurot JM, Lorriaux C, Mayor B, Chazot C, Vannucchi H, Vannucchi MT, Martins JC, Merino JL, Teruel JL, Fernandez-Lucas M, Villafruela JJ, Bueno B, Gomis A, Paraiso V, Quereda C, Ibrahim FH, Fadhlina NZ, Ng EK, Thong KM, Goh BL, Sulaiman DM, Fatimah DAN, Evi DO, Siti SR, Wilson RJ, Keith M, Copley JB, Gros B, Galan A, Gonzalez-Parra E, Herrero JA, Oyaguez I, Keith M, Casado MA, Lucisano S, Coppolino G, Villari A, Cernaro V, Lupica R, Trimboli D, Aloisi C, Buemi M. CKD-MBD II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
31
|
Kalkanli S, Deveci E, Sak ME, Evsen MS, Baran O, Ozekinci S, Yavuz D. CD34 expression of chorionic villous in pre-eclamptic placenta: an immunohistochemical and ultrastructural study. CLIN EXP OBSTET GYN 2013; 40:425-428. [PMID: 24283180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this study, pre-eclampsia, proteinuria, and edema associated with hypertension in pregnancy were assessed at the Dicle University School of Medicine Department of Obstetrics and Gynecology Clinic. One group included 20 pre-eclamptic pregnant women with gestational age 20-35 weeks of pregnancy and the same in the control group that included; however, 20 normotensive pregnant women. Histochemistry, immunohistochemistry, and electron microscopy techniques were used. Histopathological examination of syncytial nodes and stromal cells were observed in the increase in hyperplasia and hyalinization. The evaluation immunohistochemical of chorionic villi, placenta, and hematopoietic stem cell markers showed a positive reaction with CD34. Ultrastructural examination showed endoplasmic reticulum dilatation, degeneration of mitochondria in endothelial cells, and capillary vessel edema.
Collapse
Affiliation(s)
- S Kalkanli
- Department of Immunology, Dicle University School of Medicine, Diyarbakir, Turkey
| | | | | | | | | | | | | |
Collapse
|
32
|
Tarçin Ö, Yazici D, İnce Ü, Deynelı O, Sancak S, Aydin H, Yavuz D, Akalin S. Bulky gastrinoma of the common bile duct: unusual localization of extrapancreatic gastrinoma--case report. Turk J Gastroenterol 2011; 22:219-23. [PMID: 21796565 DOI: 10.4318/tjg.2011.0198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Zollinger-Ellison syndrome is characterized by elevated levels of serum gastrin associated with increased gastric acid secretion, gastrointestinal ulcerations and diarrhea. Most gastrinomas (75%) occur sporadically and are located within the gastrinoma triangle. Extraduodenal, extrapancreatic and extranodal gastrinomas have been shown in 5.6% of the patients with Zollinger-Ellison syndrome who underwent surgery. We report a 44-year-old female who had been complaining of nausea and diarrhea for 12 years. Abdominal computed tomography and magnetic resonance imaging detected a homogeneous, regular-shaped 6 x 7 cm solid mass, located between the liver, right kidney and inferior vena cava. Somatostatin receptor positive scanning led us to investigate a neuroendocrine tumor. Serum gastrin level was found very high and the patient underwent surgery. Local excision of the tumor was performed, and an 8x6x5 cm, well-capsulated, solitary mass, originating from the common bile duct was removed. The unique feature of our case is the unusual localization, and although the tumor was very large in size, only capsule invasion was observed with no evidence of distant metastasis.
Collapse
Affiliation(s)
- Özlem Tarçin
- Department of Endocrinology and Metabolism, Marmara University Hospital, İstanbul, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Yazıcı D, Özben B, Yavuz D, Deyneli O, Aydın H, Tarcin Ö, Akalın S. Epicardial adipose tissue thickness in type 1 diabetic patients. Endocrine 2011; 40:250-5. [PMID: 21553302 DOI: 10.1007/s12020-011-9478-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Accepted: 04/12/2011] [Indexed: 12/22/2022]
Abstract
Insulin resistance is getting important in the course of type 1 diabetes mellitus. Visceral fat depot is associated with insulin resistance and assessment of epicardial fat thickness is a way of measuring visceral fat. The aim of the study was to measure epicardial adipose tissue (EAT) thickness and to determine its relationship with waist-hip-ratio (WHR) and estimated glucose disposal rate (eGDR) in adult type 1 diabetic patients. Thirty-six type 1 diabetic patients (aged 31±8 years; Female/Male: 22/14) and 43 age, gender and BMI matched healthy controls were included. Fasting blood glucose (FBG), hemoglobin A1c, and lipid profiles were measured. Waist-hip-ratio (WHR) was calculated. Daily insulin dose/kg of patients were recorded and eGDR of all subjects was calculated. Epicardial adipose tissue (EAT) thickness was evaluated by echocardiography. EAT thickness of the type 1 diabetic patients was significantly higher than controls (3.30±1.06 vs. 2.30±0.34 mm, P<0.0001). EAT thickness was correlated with age (P=0.05; r=0.35), WHR (P=0.003; r=0.67), daily insulin dose/kg (r=0.45, P=0.005), and eGDR (r=-0.55, P=0.0004). Multivariate analysis revealed WHR and eGDR to be related to EAT among age, WHR, daily insulin dose/kg, eGDR, FBG, and hemoglobin A1c (r2 of the model=0.64). Epicardial adipose tissue thickness is increased in type 1 diabetic patients compared to controls and is related to WHR and eGDR in this group of patients. This measurement may point to the presence of insulin resistance in type 1 diabetic patients.
Collapse
Affiliation(s)
- Dilek Yazıcı
- Section of Endocrinology and Metabolism, Marmara University Medical School, Istanbul, Turkey.
| | | | | | | | | | | | | |
Collapse
|
34
|
Yazıcı D, Yavuz D, Öğünç AV, Sirikçi Ö, Toprak A, Deyneli O, Akalın S. Serum adipokine levels in type 1 diabetic patients: association with carotid intima media thickness. Metab Syndr Relat Disord 2011; 10:26-31. [PMID: 21933002 DOI: 10.1089/met.2011.0052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Adipokines are markers of insulin resistance and play a role in the atherosclerotic process. The association of adipokines with the macrovascular complications of type 1 diabetes mellitus (DM) needs to be determined. The aim of this study was to measure serum adiponectin, leptin, and resistin levels in type 1 DM patients and investigate their relationship with carotid intima media thickness (CIMT), a clinical marker of atherosclerosis. METHODS Seventy-five type 1 DM patients and 115 sex and age-matched healthy controls were included in the study. Serum adiponectin, leptin, and resistin levels were measured by the enzyme-linked immunosorbent assay (ELISA method). CIMT was assessed by Doppler ultrasonography. RESULTS Adiponectin levels in diabetics were higher (25.8±14.8 μg/mL vs. 5.5±7.3 μg/mL; P<0.0001) and leptin levels were lower than controls (9.4±6.2 ng/mL vs. 12.8±8.6 ng/mL; P=0.01). Resistin levels were also higher in the diabetic group compared to controls (2.1±1.4 ng/mL vs. 1.6±0.8 ng/mL; P=0.04). Adiponectin was correlated negatively with CIMT (r=-0.24, P=0.03), age (r=-0.30, P=0.02), BMI (r=-0.33, P=0.02), waist-to-hip ratio (WHR) (r=-0.38, P=0.01) and positively with creatinine (r=0.44, P=0.004). Leptin levels were correlated with total cholesterol (r=0.53, P=0.01) and high-density lipoprotein (HDL) (r=0.67, P=0.001). Resistin was correlated with CIMT (r=0.24, P=0.03) and systolic blood pressure (r=0.48, P=0.009). Multivariate analysis revealed resistin and creatinine to be independent predictors of CIMT among adiponectin, leptin, resistin, WHR, glycosylated hemoglobin (HbA1c), and creatinine. CONCLUSIONS Increased adiponectin correlates negatively and resistin positively with CIMT in type 1 diabetic patients, but adjusting for other known predictors reveals only resistin to be associated with subclinical atherosclerosis in this group of patients.
Collapse
Affiliation(s)
- Dilek Yazıcı
- Section of Endocrinology and Metabolism, Marmara University Medical School, Istanbul, Turkey.
| | | | | | | | | | | | | |
Collapse
|
35
|
Aydin H, Deyneli O, Yavuz D, Yüksel M, Tarçin O, Yazici D, Tutepe H, Akalin S. Effect of oxidative stress on aorta and tibia osteoprotegerin gene expression in ovariectomized rats. MINERVA ENDOCRINOL 2011; 36:107-115. [PMID: 21519319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM Atherosclerosis and osteoporosis share some common pathophysiological pathways. Increase in oxidative stress and activation of cytokines that increase osteoclastogenesis were reported in postmenopausal period. The aim of this study was to determine the link between these two states. METHODS A total of 32 female adult Wistar albino rats were included in the study. Rats in control group were sham operated, vehicle group were ovariectomized and given 17.5%hydroxypropyl-β-cyclodextrin. Rats in group III and IV were ovariectomized and given 17β-estradiol or raloxifene for 12 weeks, respectively. Aorta and tibia bone samples were collected. Tissue oxidative stress was determined via measurement of malondialdehyde levels and osteoprotegerin gene expression with RT-PCR. RESULTS Ovariectomy increased MDA levels both in bone and aorta compared to sham operated rats. Use of 17β-estradiol or raloxifene did not create a significant difference compared to ovariectomized rats. Ovariectomy caused a significant decrease in OPG gene expression in the tibia and aorta compared to sham operated rats. Although 17β-estradiol and raloxifene preserved gene expression in aorta they did not have any effect on bone tissue. OPG mRNA expression was negatively correlated with tissue MDA levels only in ovariectomized rats. CONCLUSION This study confirms the increase in ovariectomy-induced oxidative stress and association of it to bone and vascular tissue OPG mRNA expression.
Collapse
Affiliation(s)
- H Aydin
- Section of Endocrinology and Metabolism, Department of Internal Medicine, Yeditepe University Medical FacultyIstanbul, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Kiziltan M, Sifoglu A, Kiziltan G, Yavuz D. P6.19 Myoclonus, palmomental reflex and cognitive functions in Parkinson's disease. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60308-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Asicioglu E, Gonenli G, Kahveci A, Yildizeli B, Deyneli O, Yavuz D, Yuksel M, Akalin S. Thymic neuroendocrine carcinoma presenting as cushing's syndrome: treatment with octreotide combined with surgery and radiotherapy. ACTA ACUST UNITED AC 2011; 34:46-9. [PMID: 21346385 DOI: 10.1159/000323348] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Ebru Asicioglu
- Department of Internal Medicine, Marmara University School of Medicine, Istanbul, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Yazıcı D, Aydın SZ, Yavuz D, Tarçın O, Deyneli O, Direskeneli H, Akalın S. Anti-Saccaromyces Cerevisiae antibodies (ASCA) are elevated in autoimmune thyroid disease ASCA in autoimmune thyroid disease. Endocrine 2010; 38:194-8. [PMID: 21046480 DOI: 10.1007/s12020-010-9372-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Accepted: 07/01/2010] [Indexed: 10/19/2022]
Abstract
Environmental factors have been implicated in the development of autoimmune thyroid disease (AITD). Anti-Saccaromyces Cerevisiae Antibodies (ASCA) were shown to be elevated in several autoimmune diseases. The aim of the study was to determine ASCA levels and their relationship with thyroid autoantibodies in patients with AITD. One-hundred and twelve patients with AITD (age 41.1±12.8 years; F/M:96/16) and 103 healthy controls (38.5±10.3 years; F/M:82/21) were included. Twenty-four patients had Graves disease (GD), and 88 had Hashimoto's thyroiditis (HT). ASCA IgA and IgG, TSH, free T4, anti-thyroglobulin, and anti-thyroid peroxidase antibody concentrations were determined. ASCA IgA positivity in patients with GD (16.6%) was similar to patients with HT (13.6%) and was higher than controls (5.8%). No significant difference was present between the frequencies of IgG positivity among GD (12.5%), HT (7.9%), and control groups (5.8%). The mean levels of ASCA IgA and IgG were comparable within the groups. No correlation of ASCA and anti-thyroglobulin and anti-thyroid peroxidase levels was observed. Increased IgA ASCA positivity is observed in patients with GD, suggesting a role of environmental stimuli in its pathogenesis. The role of ASCA in the etiology of AITD needs to be further examined.
Collapse
Affiliation(s)
- Dilek Yazıcı
- Section of Endocrinology and Metabolism, Marmara University Medical School, Istanbul, Turkey.
| | | | | | | | | | | | | |
Collapse
|
39
|
Aydın H, Toprak A, Deyneli O, Yazıcı D, Tarçın Ö, Sancak S, Yavuz D, Akalın S. Epicardial Fat Tissue Thickness Correlates with Endothelial Dysfunction and Other Cardiovascular Risk Factors in Patients with Metabolic Syndrome. Metab Syndr Relat Disord 2010; 8:229-34. [PMID: 20156077 DOI: 10.1089/met.2009.0080] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Hasan Aydın
- Department of Internal Medicine, Section of Endocrinology and Metabolism, Yeditepe University Medical Faculty, Istanbul, Turkey
| | - Ahmet Toprak
- Department of Internal Medicine, Marmara University Medical Faculty, Istanbul, Turkey
| | - Oğuzhan Deyneli
- Section of Endocrinology and Metabolism, Marmara University Medical Faculty, Istanbul, Turkey
| | - Dilek Yazıcı
- Division of Endocrinology and Metabolism, Kosuyolu Teaching and Research Hospital, Istanbul, Turkey
| | - Özlem Tarçın
- Division of Endocrinology and Metabolism, Siyami Ersek Teaching and Research Hospital, Istanbul, Turkey
| | - Seda Sancak
- Section of Endocrinology and Metabolism, Marmara University Medical Faculty, Istanbul, Turkey
| | - Dilek Yavuz
- Section of Endocrinology and Metabolism, Marmara University Medical Faculty, Istanbul, Turkey
| | - Sema Akalın
- Section of Endocrinology and Metabolism, Marmara University Medical Faculty, Istanbul, Turkey
| |
Collapse
|
40
|
Aydin H, Deyneli O, Yavuz D, Gözü H, Mutlu N, Kaygusuz I, Akalin S. Short-term oral magnesium supplementation suppresses bone turnover in postmenopausal osteoporotic women. Biol Trace Elem Res 2010; 133:136-43. [PMID: 19488681 DOI: 10.1007/s12011-009-8416-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Accepted: 05/20/2009] [Indexed: 10/20/2022]
Abstract
Magnesium has been shown to increase bone mineral density when used in the treatment of osteoporosis, yet its mechanism of action is obscure. In this study, the effects of daily oral magnesium supplementation on biochemical markers of bone turnover were investigated. Twenty postmenopausal women have been divided into two groups. Ten patients were given magnesium citrate (1,830 mg/day) orally for 30 days. Ten postmenopausal women of matching age, menopause duration, and BMI were recruited as the control group and followed without any medication. Fasting blood and first-void urine samples were collected on days 0, 1, 5, 10, 20, and 30, respectively. Total magnesium, calcium, phosphorus, iPTH and osteocalcin were determined in blood samples. Deoxypyridinoline levels adjusted for creatinine were measured in urine samples. Thirty consecutive days of oral magnesium supplementation caused significantly decrease in serum iPTH levels in the Mg-supplemented group (p < 0.05). Serum osteocalcin levels were significantly increased (p < 0.001) and urinary deoxypyridinoline levels were decreased (p < 0.001) in the Mg-supplemented group. This study has demonstrated that oral magnesium supplementation in postmenopausal osteoporotic women suppresses bone turnover.
Collapse
Affiliation(s)
- Hasan Aydin
- Department of Internal Medicine, Section of Endocrinology and Metabolism, Yeditepe University Hospital, Devlet Yolu Ankara Cad. No: 102, Kozyatagi, Istanbul, 34752, Turkey.
| | | | | | | | | | | | | |
Collapse
|
41
|
Abstract
Vitamin D has immunomodulatory and anti-inflammatory activities in the healthy population and in various disease states. There are few data on the quantification of vitamin D status and inflammation with respect to changes in bone mineral density among renal transplantation patients. We analyzed the influence of vitamin D levels on allograft function and inflammatory status at the time of enrollment and at 1-year follow-up. Sixty-four renal transplant patients, including 38 males, showed an overall age of 38.61 +/- 1.05 years, had a mean graft age of 6.15 +/- 3.17 years. We excluded patients who had diabetes mellitus, chronic inflammatory disease, or chronic allograft nephropathy. We obtained pre- and posttransplantation serum samples and daily proteinuria on each patient. Measurements of bone mineral density were performed by dual-energy X-ray absortiometry. After enrollment, we followed the patients for 1 year. Thereafter we assessed serum creatinine, C-reactive protein, albumin, and spot urinary protein levels. The patients were divided into two groups based upon vitamin D levels: group I (n = 29), <20 microg/L versus group II (n = 35), >or=20 microg/L. There was no significant difference in intact parathyroid hormone levels between the two groups. Vitamin D level positively correlated with serum creatinine (r = .32, P = .01) and serum albumin levels (r = .28, P = .023) at the time of enrollment. At 1 year, patients in group I showed significantly higher creatinine (P < .001) and proteinuria levels (P < .05) than those in group II. Low vitamin D levels are not uncommon among renal transplant recipients. There was a significant association of vitamin D levels with renal allograft function. Low vitamin D levels may be a predictor of worsening of graft function and increasing proteinuria.
Collapse
Affiliation(s)
- S Sezer
- Department of Nephrology, Baskent University Faculty of Medicine, Ankara, Turkey
| | | | | | | | | |
Collapse
|
42
|
Yazici D, Ozben B, Yavuz D, Tarcin O, Deyneli O, Akalin S. EPICARDIAL FAT THICKNESS IS NOT INCREASED IN ADULT TYPE 1 DIABETIC PATIENTS. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70731-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
43
|
Tahan V, Eren F, Avsar E, Yavuz D, Yuksel M, Emekli E, Imeryuz N, Celikel C, Uzun H, Haklar G, Tozun N. Rosiglitazone attenuates liver inflammation in a rat model of nonalcoholic steatohepatitis. Dig Dis Sci 2007; 52:3465-72. [PMID: 17436085 DOI: 10.1007/s10620-007-9756-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2006] [Accepted: 01/01/2007] [Indexed: 12/11/2022]
Abstract
Rosiglitazone is an insulin-sensitizing agent. We aimed to assess the effects of rosiglitazone on a methionine- and choline-deficient diet (MCDD) model of nonalcoholic steatohepatitis (NASH) in rats. Wistar rats were fed either MCDD or a control diet in the 4-week induction study; they were given saline or 4 mg/kg/day rosiglitazone. After the induction study period, the rats were divided into four groups and fed MCDD or given a control diet for an additional 8 weeks and received saline or rosiglitazone. Serum and tissue samples were obtained. Rosiglitazone improved inflammation in NASH and improved ALT, alkaline phosphatase, and interleukin-6 levels in the induction study and interleukin-1beta, interleukin-6, and tumor necrosis factor-alpha levels in the treatment study. Our preliminary study is the first to show the anti-inflammatory effects of rosiglitazone in NASH. Rosiglitazone's effect on cytokines may be a key mechanism of its anti-inflammatory effect in NASH.
Collapse
Affiliation(s)
- Veysel Tahan
- Department of Gastroenterology, Marmara University School of Medicine, Istanbul, Turkey.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Abstract
OBJECTIVE Three molecular forms of PRL with molecular weights of 23, 50-60 and > 100 kDa have been defined. The high-molecular-weight forms are called macroprolactin. Different immunoassays produce varyingly elevated results with macroprolactin-containing sera. The kidneys are reported to clear 25% of PRL from the circulation. Hyperprolactinaemia is seen in 20-75% of patients with chronic renal failure (CRF). PRL clearance rate has been reported to be reduced in CRF and the resulting hyperprolactinaemia is due to reduced renal function. PATIENTS To determine the contribution of macroprolactinaemia to elevated PRL levels in CRF, 91 patients receiving haemodialysis (HD), continuous ambulatory peritoneal dialysis (CAPD) and renal transplantation (RT) therapies and 72 control subjects were included in the study. MEASUREMENTS Serum PRL levels were measured by a sandwich immunoassay with electrochemical detection. Following polyethylene glycol (PEG) precipitation, recovery ratios were calculated and samples with a recovery of < 50% were identified as having macroprolactin isoforms. RESULTS The serum and supernatant PRL levels of CRF patients were significantly higher than those of the control group (P < 0.001). The serum PRL levels of HD and CAPD patients were significantly higher than those of the RT patients (P < 0.001). The serum PRL levels of the RT patients and the control group did not differ significantly (P > 0.05). A moderate correlation was found between PRL and creatinine levels (r = 0.609, P < 0.001). CONCLUSIONS The hyperprolactinaemia seen in renal replacement therapy is not associated with the presence of macroprolactin isoforms but with the decline in renal function.
Collapse
Affiliation(s)
- Dilek Yavuz
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Marmara University School of Medicine, Istanbul, Turkey
| | | | | | | | | |
Collapse
|
45
|
Abstract
BACKGROUND QT dispersion (QTd) is a good prognostic marker in type 2 diabetic patients without previous cardiovascular disease. Diabetic patients with an attenuated decline in nocturnal blood pressure (non-dippers) have been shown to have increased risk of diabetic complications, vascular events and mortality. AIM The aim of this study was to evaluate the relationship between diurnal blood pressure rhythm, QTd and microvascular complications in type 2 diabetic patients. METHODS Cardiovascular autonomic function tests, 24-h ambulatory blood pressure monitoring and urinary albumin excretion measurements were performed in healthy controls (n = 25), normoalbuminuric (n = 34) and microalbuminuric (n = 23) type 2 diabetic patients. QTd was assessed manually from 12-lead surface electrocardiograms. RESULTS Compared with the controls, both normoalbuminuric and microalbuminuric diabetic patients had increased QTd (59.11 +/- 15.86; 60.27 +/- 17.95 vs. 40.48 +/- 10.92, p < 0.001 and p < 0.001, respectively). Similarly, diabetic patients had increased QTd regardless of the presence of autonomic neuropathy. On the other hand, non-dipper diabetic patients had increased QTd compared with the controls and dipper diabetic patients (69.73 +/- 14.50 vs. 40.48 +/- 10.92; 47.84 +/- 9.62 ms, p < 0.001). There was a negative correlation between QTd and diurnal diastolic blood pressure change (r = -0.48, p < 0.0005). CONCLUSION Patients with type 2 diabetes mellitus were found to have increased QT dispersion irrespective of the presence of diabetic autonomic neuropathy. However, QT dispersion in dipper diabetic patients was similar to the controls. This finding might point out that attenuated decline of nocturnal blood pressure could be a more sensitive marker for autonomic neuropathy.
Collapse
Affiliation(s)
- O Deyneli
- Marmara University Division of Endocrinology and Metabolism, Istanbul, Turkey.
| | | | | | | | | |
Collapse
|
46
|
Yavuz D, Tuğtepe H, Cetinel S, Uyar S, Kaya H, Haklar G, Civelek S, Deyneli O, San T, Burçak G, Akalin S. Collagen ultrastructure and TGF-beta1 expression preserved with aminoguanidine during wound healing in diabetic rats. Endocr Res 2005; 31:229-43. [PMID: 16392625 DOI: 10.1080/07435800500373140] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Advanced glycoxidation end products have been implicated in delayed diabetic wound healing. In this study, we evaluated the effects of aminoguanidine, which is an advanced glycation and nitric oxide (NO) synthase inhibitor, on extracellular matrix protein expression, collagen configuration, and nitrite/nitrate levels in wounds of diabetic rats. Sixteen Wistar male rats were made diabetic by streptozotocin. Of these, eight rats were given AG (aminoguanidine bicarbonate (AG) (group DAG) in their drinking water, and eight rats were followed as diabetic paired controls (group D). Eight healthy rats were followed as the healthy control group (group H). At the eighth week, a 2 x 2 cm area full-thickness skin defect was created. The degree of contraction of the open wounds was evaluated for 2 weeks duration. On the 15th postoperative day, wound surface areas were measured, and wound specimens and blood samples were collected. The shrinking percentage of the wounds was small in both groups H and DAG compared with group D (p < 0.05). Similar to healthy rats, the aminoguanidine-treated diabetic rats had very strong transforming growth factor (TGF)-beta1 expression in granulation tissue and intact skin in comparison with diabetic controls. In the diabetic group, the intact skin demonstrated sparsely distributed regular collagen fibers in the granulation zone, and the regular pattern of collagen fibers was lost. In conclusion, aminoguanidine improves wound healing, restores growth factor TGF-beta1 expression, and preserves collagen ultra structure, whereas it has no prominent effect on NO levels within wound tissue in diabetic rats.
Collapse
Affiliation(s)
- Dilek Yavuz
- Marmara University Medical School, Section of Endocrinology and Metabolism, Istanbul, Turkey.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Budak Y, Demirci H, Akdogan M, Yavuz D. Erytrocyte membrane anionic charge in type 2 diabetic patients with retinopathy. BMC Ophthalmol 2004; 4:14. [PMID: 15473902 PMCID: PMC526283 DOI: 10.1186/1471-2415-4-14] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2004] [Accepted: 10/08/2004] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The Steno hypothesis states that changes in basement membrane anionic charge leads to diabetic microvascular complications. In diabetic nephropathy, loss of basement membrane glycosaminoglycans and the association between glomerular basement membrane heparan sulphate and proteinuria has been documented. A correlation between erythrocyte surface and the glomerular capillary wall charges has also been observed. The aim of this study is to evaluate the relationship between retinopathy and erythrocyte anionic charge and urinary glycosaminoglycan excretion in type 2 diabetic patients. METHODS 49 subjects (58 +/- 7 yrs, M/F 27/22) with type 2 diabetes with proliferative retinopathy (n = 13), nonproliferative retinopathy (n = 13) and without retinopathy (n = 23) were included in the study. 38 healthy subjects were selected as control group (57 +/- 5 yrs, M/F 19/19). Erythrocyte anionic charge (EAC) was determined by the binding of the cationic dye, alcian blue. Urinary glycosaminoglycan and microalbumin excretion were measured. RESULTS EAC was significantly decreased in diabetic patients with retinopathy (255 +/- 30 ng alcian blue/10(6) RBC, 312 +/- 30 ng alcian blue/10(6) RBC for diabetic and control groups respectively, p < 0.001). We did not observe an association between urinary GAG and microalbumin excretion and diabetic retinopathy. EAC is found to be negatively correlated with microalbuminuria in all groups. CONCLUSIONS We conclude that type 2 diabetic patients with low erythrocyte anionic charge are associated with diabetic retinopathy. Reduction of negative charge of basement membranes may indicate general changes in microvasculature rather than retinopathy. More prospective and large studies needs to clarify the role of glycosaminoglycans on progression of retinopathy in type 2 diabetic patients.
Collapse
Affiliation(s)
- Yasemin Budak
- SSK Sevket Yilmaz Hospital, Section of Clinical Chemistry, Turkey
| | - Hakan Demirci
- SSK Sevket Yilmaz Hospital, Section of Family Medicine, Turkey
| | - Muberra Akdogan
- SSK Sevket Yilmaz Hospital, Section of Ophthalmology, Turkey
| | - Dilek Yavuz
- Marmara University Medical School, Section of Endocrinology and Metabolism, Turkey
| |
Collapse
|
48
|
|
49
|
Yavuz D, Koç M, Toprak A, Akpinar I, Velioğlu A, Deyneli O, Haklar G, Akalin S. Effects of ACE inhibition and AT1-receptor antagonism on endothelial function and insulin sensitivity in essential hypertensive patients. J Renin Angiotensin Aldosterone Syst 2003; 4:197-203. [PMID: 14608527 DOI: 10.3317/jraas.2003.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE Disturbed endothelial function is closely associated with hyperinsulinaemia and insulin resistance in essential hypertension. The aims of this study were: 1) to evaluate whether the two alternative drugs, angiotensin-converting enzyme (ACE) inhibitors and Angiotensin II (Ang II) antagonists, had comparable effects on glucose metabolism and endothelial function. 2) to determine whether they improve endothelial dysfunction through modulating insulin resistance and oxidative stress. STUDY DESIGN AND METHODS Essential hypertensive patients were randomised into two groups: Twelve (nine patients in final analysis) patients were given enalapril (enalapril group), and twelve (nine patients in final analysis) were given losartan (losartan group). Twelve sex- and age-matched normotensive volunteers were included as controls. Before and after six months of treatment, endothelial function, insulin sensitivity and lipid peroxidation (TBARs) and NO metabolites (NOx) were evaluated. RESULTS Endothelial function, measured as flow mediated dilatation (FMD), was improved in both of the treatment groups (p=0.0001). Calculated insulin sensitivity index also improved in the enalapril-treated group (p=0.05) but not in the losartan-treated group, compared with baseline levels. TBARS values decreased significantly in the enalapril group compared with baseline levels (p<0.001). FMD was positively correlated with insulin sensitivity index (r=0.32, p<0.05) and NOx levels (r=0.39, p=0.01) and negatively correlated with TBARS levels (r=-0.53, p=0.0002) in hypertensive patients. CONCLUSION Inhibition of the renin-angiotensin system, either with ACE inhibitors or AT(1)-receptor blockers improves endothelial dysfunction. ACE inhibition has prominent effects on improving insulin sensitivity and decreasing oxidative stress in essential hypertensive patients.
Collapse
Affiliation(s)
- Dilek Yavuz
- Section of Endocrinology and Metabolism, Marmara University, Istanbul, 34660, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Yavuz D, Küçükkaya B, Haklar G, Ersöz O, Akoğlu E, Akalin S. Effects of captopril and losartan on lipid peroxidation, protein oxidation and nitric oxide release in diabetic rat kidney. Prostaglandins Leukot Essent Fatty Acids 2003; 69:223-7. [PMID: 12907131 DOI: 10.1016/s0952-3278(03)00088-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Increased oxidative stress has an important role in the pathogenesis of diabetic nephropathy. The aim of this study was to evaluate the effects of renin-anigiotensin system blockage, either by angiotensin-converting enzyme inhibition or angiotensin receptor blockage, on oxidative stress and nitric oxide release in diabetic rat kidneys. After induction of diabetes, six rats were given captopril, six rats were given losartan, and six rats served as diabetic controls. Six healthy rats were also included. At the end of an 8-week period nitric oxide release, lipid peroxidation and protein oxidation were measured in kidney cortices, and urinary albumin excretion (UAE) was determined in 24-h urine samples. Losartan- and captopril-treated diabetic rats had lower levels of UAE than diabetic controls. Diabetic rats had higher levels of lipid peroxidation and protein oxidation compared to healthy rats. NO release was significantly lower in diabetic groups than healthy controls. UAE levels showed a positive correlation with lipid peroxidation and a negative correlation with NO release. Inhibition of lipid peroxidation could be one of the protective mechanisms of renin-angiotensin axis inhibition in diabetic kidney tissues.
Collapse
Affiliation(s)
- Dilek Yavuz
- Section of Endocrinology and Metabolism, Marmara University Medical School, Istanbul, Turkey.
| | | | | | | | | | | |
Collapse
|