17 results on '"Yildiz SM"'
Search Results
2. β-Globin chain abnormalities with coexisting α-thalassemia mutations
- Author
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Cagatay Unsal, Birol Guvenc, Hakan Erkman, Suleyman Dincer, Abdullah Canataroglu, Ferda Tekin Turhan, Sevcan Tug Bozdogan, Sule Menziletoglu Yildiz, Çukurova Üniversitesi, Guvenc, B., Canataroglu, A., Unsal, C., Yildiz, S.M., Turhan, F.T., Bozdogan, S.T., Erkman, H., Yeditepe Üniversitesi, Guvenc, B, Canataroglu, A, Unsal, C, Yildiz, SM, Turhan, FT, Bozdogan, ST, and Erkman, H
- Subjects
Sickle cell trait ,Mutation ,S-a-thalassemia ,business.industry ,Thalassemia ,Prenatal diagnosis ,General Medicine ,medicine.disease ,medicine.disease_cause ,Bioinformatics ,Compound heterozygosity ,Molecular biology ,Sickle cell anemia ,a-globin gene ,b-globin gene ,sickle cell anemia ,Clinical Research ,Genotype ,medicine ,mutation ,Restriction fragment length polymorphism ,business - Abstract
WOS: 000308829800011 PubMed ID: 23056075 Introduction: The frequency of hemoglobinopathies is still high in Adana, the biggest city of the Cukurova Region that is located in the southern part of Turkey. Our aim was to identify the concomitant mutations in alpha- and beta-globin genes which lead to complex hemoglobinopathies and to establish an appropriate plan of action for each subject, particularly when prenatal diagnosis is necessary. Material and methods: We studied the association between the beta-globin gene and alpha-thalassemia genotypes. The reverse hybridization technique was employed to perform molecular analysis, and the results were confirmed by amplification refractory mutation system (ARMS) or restriction fragment length polymorphism (RFLP) technique. Results: We evaluated 36 adult subjects (28 female and 8 male; age range: 18-52 years) with concomitant mutations in their alpha- and beta-globin genes. The alpha(3.7)/alpha alpha deletion was the commonest defect in the alpha-chain as expected, followed by alpha(3.7)/alpha(3.7) deletion. Twenty-five of 36 cases were sickle cell trait with coexisting alpha-thalassemia, while seven Hb S/S patients had concurrent mutations in their alpha-genes. The coexistence of alpha(PolyA-2)alpha/alpha with Hb A/D and with Hb S/D, which is very uncommon, was also detected. There was a subject with compound heterozygosity for beta-globin chain (-alpha(3.7)/alpha alpha with IVSI.110/S), and also a case who had -alpha(3.7)/alpha alpha deletion with IVSI.110/A. Conclusions: Although limited, our data suggest that it would be valuable to study coexisting alpha-globin mutations in subjects with sickle cell disease or beta-thalassemia trait during the screening programs for premarital couples, especially in populations with a high frequency of hemoglobinopathies.
- Published
- 2012
- Full Text
- View/download PDF
3. beta-Thalassemia mutations and hemoglobinopathies in Adana, Turkey: results from a single center study
- Author
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Birol Guvenc, Hakan Erkman, Suleyman Dincer, Abdullah Canataroglu, Cagatay Unsal, Sule Menziletoglu Yildiz, Sevcan Tug Bozdogan, Ferda Tekin Turhan, Çukurova Üniversitesi, Guvenc, B, Canataroglu, A, Unsal, C, Yildiz, SM, Turhan, FT, Bozdogan, ST, Erkman, H, Yeditepe Üniversitesi, Guvenc, B., Canataroglu, A., Unsal, C., Yildiz, S.M., Turhan, F.T., Bozdogan, S.T., and Erkman, H.
- Subjects
Pediatrics ,medicine.medical_specialty ,Thalassemia ,β-Globin StripAssay ,Gene mutation ,medicine.disease_cause ,Single Center ,beta-thalassemia ,sickle cell anemia ,hemic and lymphatic diseases ,ß-thalassemia ,medicine ,hemoglobinopathy ,Mutation ,beta-Globin StripAssay ,business.industry ,General Medicine ,medicine.disease ,Molecular biology ,Sickle cell anemia ,Abnormal hemoglobin ,Hemoglobinopathy ,Basic Research ,ß-Globin StripAssay ,β-thalassemia ,Hemoglobin ,mutation ,business - Abstract
WOS: 000306150200004 PubMed ID: 22851993 Introduction: beta-Thalassemia and hemoglobinopathies are common genetic disorders in Turkey and in this retrospective study our aim was to determine the frequency of beta-thalassemia and hemoglobinopathies in Adana, which is one of the biggest cities located in the southern part of Turkey. Material and methods: Data from 3000 individuals admitted to Seyhan Hereditary Blood Disorders Center in Adana were evaluated. The blood samples were collected into EDTA-containing tubes and hematological parameters were analyzed using an automatic cell counter. High performance liquid chromatography technique was used to determine the type, of hemoglobin. Molecular screening of the beta-globin gene was performed with beta-Globin StripAssay. Results: Of 3000 cases, 609 were diagnosed as beta-thalassemia or hemoglobinopathy. We have found that the rates of occurrence of beta-thalassemia and hemoglobinopathies are 13.46% and 6.83% respectively in this area. We have identified 18 different beta-thalassemia mutations and three separate abnormal hemoglobins: HbS, HbD Los Angeles, and HbE. In molecular analyses, beta-thalassemia gene mutations of IVSI.110 (G>A), codon 8 (-AA), IVSI.1 (G>A), IVSI.6 (T>C), -30 (T>A), IVSII.1 (G>A), codon 39 (C>T), codon 44 (-C), IVSI.5 (G>C), codon 5 (-CT), codon 8/9 (+G), IVSII.745 (C>G), codon 22 (7bp del), -101(C>T), codon 36/37 (-T), IVSI.15 (T>G), codon 6 (-A), 88 (G>A) were detected. Conclusions: Considering the high incidence of mutations that we have found, beta-thalassemia and hemoglobinopathies still seem to be a public health problem in Adana.
- Published
- 2012
4. Molecular Characterization of alpha-Thalassemia in Adana, Turkey: A Single Center Study
- Author
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Hakan Erkman, Inci Akyuzluer, Suleyman Dincer, Ferda Tekinturhan, Secaatin Okten, Birol Guvenc, Sule Menziletoglu Yildiz, Çukurova Üniversitesi, Guvenc, B., Yildiz, S.M., Tekinturhan, F., Dincer, S., Akyuzluer, I., Okten, S., Erkman, H., Yeditepe Üniversitesi, Guvenc, B, Yildiz, SM, Tekinturhan, F, Dincer, S, Akyuzluer, I, Okten, S, and Erkman, H
- Subjects
Male ,Turkey ,Frequency, alpha-thalassemia ,Alpha-thalassemia ,Biology ,Single Center ,Molecular properties, ?-thalassemia ,Polymerase Chain Reaction ,law.invention ,alpha(3.7) deletion ,alpha-Globins ,alpha-Thalassemia ,law ,Frequency, ?-thalassemia ,hemic and lymphatic diseases ,Prevalence ,medicine ,?3.7 deletion ,Humans ,Mass Screening ,Polymerase chain reaction ,Mass screening ,Retrospective Studies ,Genetics ,Genetic disorder ,?-Thalassemia ,Hematology ,General Medicine ,Gene deletion ,Molecular properties, alpha-thalassemia ,medicine.disease ,Female ,Heterogeneity ,Gene Deletion ,Mutations - Abstract
Background/Aim: α-Thalassemia (α-thal) is a widespread genetic disorder throughout the world caused primarily by reduced synthesis of the α-globin chains, and it has been found at a high incidence in Turkey. Our aim in this study was to determine the frequency and molecular properties of α-thal in Adana, Turkey. Material and Methods: A total of 3,000 individuals comprising premarital couples or patients with anemia were screened between 2007 and 2008. Hematological parameters were analyzed using an automatic cell counter, and to detect the carriers of hemoglobin variants, high-performance liquid chromatography was used. Molecular screening of the α-globin gene was carried out by an Alpha-Globin StripAssay® which is based on multiplex PCR for specific amplification. Results: We have identified 225 cases with α-thal and found that the prevalence of α-thal is 7.5% in this area. In molecular analyses, the α-thal gene mutations α3.7, α4.2, --MED, --20.5, αPA-2α, αααanti-3.7, and αPA-1α were detected. Conclusion: Our results showed that the α-thal mutations represent a great heterogeneity and that the -α3.7 deletion has the highest frequency in Adana.
- Published
- 2010
5. Application of the #Enzian classification for endometriosis on MRI: prospective evaluation of inter- and intraobserver agreement.
- Author
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Harth S, Kaya HE, Zeppernick F, Meinhold-Heerlein I, Keckstein J, Yildiz SM, Nurkan E, Krombach GA, and Roller FC
- Abstract
Objectives: The purpose of this investigation was to evaluate the inter- and intraobserver variability of the updated #Enzian classification of endometriosis on MRI and to evaluate the influence of reader experience on interobserver concordance., Methods: This was a prospective single-center study. All patients were included who received an MRI of the pelvis for evaluation of endometriosis between March and July 2023 and who have provided written informed consent. Images were reviewed independently for endometriosis by three radiologists, utilizing the MRI-applicable categories of the #Enzian classification. Two radiologists had experience in pelvic MRI and endometriosis imaging. One radiologist had no specific experience in pelvic MRI and received a one-hour briefing beforehand., Results: Fifty consecutive patients (mean age, 34.9 years ±8.6 [standard deviation]) were prospectively evaluated. Interobserver agreement was excellent for diagnosis of deep infiltrating endometriosis (Fleiss' kappa: 0.89; 95% CI 0.73-1.00; p < 0.001) and endometriomas (Fleiss' kappa: 0.93; 95% CI 0.77-1.00; p < 0.001). For the experienced readers, interobserver agreement in the assessment of compartments A, B and C was excellent (κ
w ranging from 0.84; 95% CI 0.71-0.97; p < 0.001 to 0.89; 95% CI 0.82-0.97; p < 0.001). For the pairings of the experienced readers to the reader without specific experience in pelvic MRI, agreement was substantial to excellent (κw ranging from 0.64; 95% CI 0.44-0.85; p < 0.001 to 0.91; 95% CI 0.84-0.98; p < 0.001). Intraobserver variability was excellent for compartments A, B and C (κw ranging from 0.85; 95% CI 0.73-0.96; p < 0.001 to 0.95; 95% CI 0.89-1.00; p < 0.001)., Conclusion: With sufficient experience, the #Enzian classification enables the achievement of excellent inter- and intraobserver agreement in MRI-based diagnosis of deep infiltrating endometriosis and endometriomas., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Harth, Kaya, Zeppernick, Meinhold-Heerlein, Keckstein, Yildiz, Nurkan, Krombach and Roller.)- Published
- 2023
- Full Text
- View/download PDF
6. Tuberkulöse Perikarditis.
- Author
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Yildiz SM, Roller FC, and Krombach GA
- Subjects
- Humans, Pericardial Effusion, Pericarditis, Tuberculous
- Abstract
Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht.
- Published
- 2022
- Full Text
- View/download PDF
7. [Myelolipoma: A rare but important differential diagnosis of accidentally detected fatty retroperitoneal and adrenal masses].
- Author
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Yildiz SM, Krombach GA, and Roller FC
- Subjects
- Diagnosis, Differential, Humans, Retroperitoneal Space diagnostic imaging, Adrenal Gland Neoplasms diagnostic imaging, Adrenal Gland Neoplasms surgery, Myelolipoma diagnostic imaging, Myelolipoma surgery, Retroperitoneal Neoplasms diagnostic imaging, Retroperitoneal Neoplasms surgery
- Abstract
Competing Interests: Die Autorinnen/Autoren geben an, dass kein Interessenkonflikt besteht.
- Published
- 2022
- Full Text
- View/download PDF
8. Noninvasive prediction of pulmonary hemodynamics in chronic thromboembolic pulmonary hypertension by electrocardiogram-gated computed tomography.
- Author
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Roller FC, Yildiz SM, Kriechbaum SD, Harth S, Breithecker A, Liebetrau C, Schüßler A, Mayer E, Hamm CW, Guth S, Krombach GA, and Wiedenroth CB
- Abstract
Purpose: The aim of the study was to investigate the potential of electrocardiogram (ECG)-gated computed tomography pulmonary angiography (CTPA) as a predictor of disease severity in patients with chronic thromboembolic pulmonary hypertension (CTEPH)., Method: Forty-five CTEPH patients with a mean age of 63.8 years±12.7 y (±standard deviation) who had undergone ECG-gated CTPA and right heart catheterization (RHC) were included in the study. Right ventricular to left ventricular volume ratio (RVV/LVV), diameter ratio on 4-chamber view (RVD4CH/LVD4CH), pulmonary trunk (PT) diameter, PT to aortic diameter ratio (PT/A), and septal angle were correlated to mean pulmonary artery pressure (mPAP). Moreover, RVV/LVV and RVD4CH/LVD4CH were adjusted to pulmonary diameter index (PADi) and PT/A index. Areas under the curve (AUC) for predicting mPAP above 40 mmHg, 35 mmHg, and 30 mmHg were calculated., Results: RVD4CH/LVD4CH revealed the strongest correlation to mPAP before (r = 0.6507) and after (r = 0.7650; p < 0.0001) PT/A adjustment. The AUCs for predicting pH with mPAP over 40 mmHg and 30 mmHg were 0.9229 and 0.864, respectively. A cutoff value of 1.298 enabled prediction of pH with mPAP over 40 mmHg with a sensitivity, specificity, positive predictive, and negative predictive value of 80.00 %, 95.83 %, 88.46 %, and 94.12 %, respectively. Intra- and interobserver variability were excellent for all parameters., Conclusion: Combining different and easily evaluable ECG-gated CTPA parameters enables excellent prediction of pulmonary hemodynamics in CTEPH patients. Ventricular diameter ratio on 4-chamber view adjusted by the PT/A ratio yielded the best correlation to mPAP., Competing Interests: CBW has received speaker fees and/or consultant honoraria from Actelion, AOP Orphan Pharmaceuticals AG, Bayer AG, BTG, MSD, and Pfizer. SG has received speaker fees from Actelion, Bayer, GSK, MSD and Pfizer. The other authors declare that they have no competing interests., (© 2021 Published by Elsevier Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
9. Hemoglobinopathies in the Çukurova Region and Neighboring Provinces.
- Author
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Yuzbasioglu Ariyurek S, Yildiz SM, Yalin AE, Guzelgul F, and Aksoy K
- Subjects
- DNA Mutational Analysis methods, Gene Frequency, Genetic Carrier Screening, Hemoglobin, Sickle genetics, Hemoglobinopathies genetics, Humans, Molecular Epidemiology, Mutation, Turkey epidemiology, alpha-Thalassemia genetics, beta-Thalassemia genetics, Hemoglobinopathies epidemiology, Hemoglobins, Abnormal genetics
- Abstract
To contribute to the creation of a mutation map of the region, we aimed to determine the mutation spectrum of thalassemias and abnormal hemoglobins (Hbs) in the Çukurova region and surrounding provinces. In this study, a total of 8135 samples from Adana, Hatay, Mersin, Konya and Kayseri provinces between 1993 and 2014 were analyzed. Complete blood cell (CBC) counts and Hb typing were carried out using automatic cell counters, cellulose acetate membrane electrophoresis and high performance liquid chromatography (HPLC), respectively. For the molecular analyses, genomic DNA was extracted using both manual and automated DNA extraction devices. Determination of Hb mutations were done by microarray, restriction fragment length polymorphism (RFLP), amplification refractory mutation system (ARMS) and gap-polymerase chain reaction (gap-PCR) methodologies. Samples were analyzed for abnormal Hb and thalassemia mutations. Out of 8135 samples, 1382 were observed to be carrying Hb mutations. It was identified that 826 mutation carriers included abnormal Hbs with a frequency of 59.7%, 416 carriers included β-thalassemia (β-thal) mutations with a frequency of 30.7% and 136 carriers included α-thalassemia (α-thal) mutations with a frequency of 9.9%. In this study, the most frequently observed abnormal Hb in the region was Hb S [β6(A3)Glu→Val (GTG > GAG), HBB: c.20T > A], whereas the most commonly observed mutations were the IVS-I-110 (G > A) (HBB: c.93-21G > A) point mutation in β-thal and the 3.7 kb deletion in α-thal.
- Published
- 2016
- Full Text
- View/download PDF
10. Hepatitis B, Hepatitis C, Human immunodeficiency virus and syphilis frequency among blood donors: A single center study.
- Author
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Yildiz SM, Candevir A, Kibar F, Karaboga G, Turhan FT, Kis C, Dincer S, and Guvenc B
- Subjects
- Adult, Female, HIV Seropositivity blood, HIV Seroprevalence, Hepatitis B blood, Hepatitis C blood, Humans, Male, Syphilis blood, Turkey epidemiology, Blood Donors, HIV Seropositivity epidemiology, HIV-1, HIV-2, Hepacivirus, Hepatitis B epidemiology, Hepatitis B virus, Hepatitis C epidemiology, Syphilis epidemiology
- Abstract
We aimed to provide updated results for seroprevalence of hepatitis B, hepatitis C viruses while presenting first data for human immunodeficiency virus and syphilis seropositivity amongst blood donors in Adana, Turkey. Screening and confirmatory test results of 62,461 donors were evaluated. HBsAg, anti-HCV, anti-HIV1/2 and syphilis seropositivity was 1.92%, 0.48%, 0.20%, 0.18% respectively, based on screening tests, and 1.66%, 0.05%, 0.003%, 0.10% respectively, according to confirmatory tests. Transfusion-transmitted infections (TTI) was more prevalent in low-educated donors. HBsAg and syphilis seropositivity rates were higher in married subjects. We found that the prevalence of HBV and HCV was significantly decreased in the last two decades in Adana. Importantly, this study provides first data in HIV and syphilis seropositivity rates among blood donors in our region and both HIV and syphilis seroprevalences were found to be low compared to many regions of Turkey. However, considering the fact that increasing number of immigrants may change prevalences and trends of TTI both in Adana and in Turkey, strict monitorization and yearly reporting of TTI rates seem necessary to be able to take proactive measures., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
11. β-Globin chain abnormalities with coexisting α-thalassemia mutations.
- Author
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Guvenc B, Canataroglu A, Unsal C, Yildiz SM, Turhan FT, Bozdogan ST, Dincer S, and Erkman H
- Abstract
Introduction: The frequency of hemoglobinopathies is still high in Adana, the biggest city of the Cukurova Region that is located in the southern part of Turkey. Our aim was to identify the concomitant mutations in α- and β-globin genes which lead to complex hemoglobinopathies and to establish an appropriate plan of action for each subject, particularly when prenatal diagnosis is necessary., Material and Methods: We studied the association between the β-globin gene and α-thalassemia genotypes. The reverse hybridization technique was employed to perform molecular analysis, and the results were confirmed by amplification refractory mutation system (ARMS) or restriction fragment length polymorphism (RFLP) technique., Results: We evaluated 36 adult subjects (28 female and 8 male; age range: 18-52 years) with concomitant mutations in their α- and β-globin genes. The -α(3.7)/αα deletion was the commonest defect in the α-chain as expected, followed by α(3.7)/-α(3.7) deletion. Twenty-five of 36 cases were sickle cell trait with coexisting α-thalassemia, while seven Hb S/S patients had concurrent mutations in their α-genes. The coexistence of α(PolyA-2)α/αα with Hb A/D and with Hb S/D, which is very uncommon, was also detected. There was a subject with compound heterozygosity for β-globin chain (-α(3.7)/αα with IVSI.110/S), and also a case who had -α(3.7)/αα deletion with IVSI.110/A., Conclusions: Although limited, our data suggest that it would be valuable to study coexisting α-globin mutations in subjects with sickle cell disease or β-thalassemia trait during the screening programs for premarital couples, especially in populations with a high frequency of hemoglobinopathies.
- Published
- 2012
- Full Text
- View/download PDF
12. β-Thalassemia mutations and hemoglobinopathies in Adana, Turkey: results from a single center study.
- Author
-
Guvenc B, Canataroglu A, Unsal C, Yildiz SM, Turhan FT, Bozdogan ST, Dincer S, and Erkman H
- Abstract
Introduction: β-Thalassemia and hemoglobinopathies are common genetic disorders in Turkey and in this retrospective study our aim was to determine the frequency of β-thalassemia and hemoglobinopathies in Adana, which is one of the biggest cities located in the southern part of Turkey., Material and Methods: Data from 3000 individuals admitted to Seyhan Hereditary Blood Disorders Center in Adana were evaluated. The blood samples were collected into EDTA-containing tubes and hematological parameters were analyzed using an automatic cell counter. High performance liquid chromatography technique was used to determine the type of hemoglobin. Molecular screening of the β-globin gene was performed with β-Globin StripAssay., Results: Of 3000 cases, 609 were diagnosed as β-thalassemia or hemoglobinopathy. We have found that the rates of occurrence of β-thalassemia and hemoglobinopathies are 13.46% and 6.83% respectively in this area. We have identified 18 different β-thalassemia mutations and three separate abnormal hemoglobins: HbS, HbD Los Angeles, and HbE. In molecular analyses, β-thalassemia gene mutations of IVSI.110 (G > A), codon 8 (-AA), IVSI.1 (G > A), IVSI.6 (T > C), -30 (T > A), IVSII.1 (G > A), codon 39 (C > T), codon 44 (-C), IVSI.5 (G > C), codon 5 (-CT), codon 8/9 (+G), IVSII.745 (C > G), codon 22 (7bp del), -101(C > T), codon 36/37 (-T), IVSI.15 (T > G), codon 6 (-A), -88 (G > A) were detected., Conclusions: Considering the high incidence of mutations that we have found, β-thalassemia and hemoglobinopathies still seem to be a public health problem in Adana.
- Published
- 2012
- Full Text
- View/download PDF
13. Instruments for measuring service quality in sport and physical activity services.
- Author
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Yildiz SM
- Subjects
- Humans, Physical Fitness, Health Services Research, Quality Assurance, Health Care methods, Recreation, Sports standards
- Abstract
Studies that conceptualize and measure quality in sport services date back to the last two decades. The present study aims to examine quality in sport services in terms of the classification of participant services and spectator services and to provide a summary of the empirical studies carried out to date. This study demonstrates that sport services literature is still in its infancy and no agreement exists on the developed models. Furthermore, the research models examined indicate that sports services not only possess different attributes and dimensions than other service industries but also differ in themselves. Consequently, the produced models need to be tested in the future on different sample groups for further clarification.
- Published
- 2012
14. The training and employment of teachers of physical education and sports in Turkey.
- Author
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Yildiz SM
- Subjects
- Adult, Career Choice, Humans, Sports statistics & numerical data, Turkey epidemiology, Workforce, Employment statistics & numerical data, Faculty supply & distribution, Physical Education and Training statistics & numerical data, Universities statistics & numerical data
- Abstract
This paper examines the phenomenon of training teachers of Physical Education and Sports (PES) in Turkey with respect to its dimensions of student quotas, graduates, and employment; and performs analytical evaluations through the numeric data. In the last five years, the number of labor force participants in PES teaching posts was 14,459 on average and the average employment volume was 10.29%, which means that a great number of graduates have accumulated against employment. Thus, this indicates that no realistic planning was done in the past years "so as to create a supply-demand equilibrium between training and employment of PES teachers".
- Published
- 2012
15. Relationship between leader-member exchange and burnout in professional footballers.
- Author
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Yildiz SM
- Subjects
- Adult, Football, Humans, Leadership, Turkey, Burnout, Professional, Interprofessional Relations, Occupations, Soccer psychology
- Abstract
Numerous variables influence burnout, one of which is leader-member exchange. The present study was conducted to determine whether leader-member exchange quality affects burnout in professional footballers. The study used the Leader-Member Exchange-7 scale developed by Scandura and Graen ( 1984 ) to measure leader (coach)-member (player) exchange and Pines's ( 2005 ) abbreviated version of the burnout scale developed by Pines and Aronson ( 1988 ) to measure burnout. The data were obtained from the professional players (N = 107) of six football clubs in the Turkish Secondary Football League in western Turkey. The results demonstrated that quality of leader-member exchange significantly and inversely influenced burnout of professional footballers. The study also evaluated quality of leader-member exchange in terms of three strengths of relationship (low, fair, and high) between the coach and players. Contrary to expectations, the results revealed significant differences in burnout when comparing low versus fair quality and low versus high quality, while no significant difference in burnout was observed between fair and high quality.
- Published
- 2011
- Full Text
- View/download PDF
16. Molecular characterization of alpha-Thalassemia in Adana, Turkey: A single center study.
- Author
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Guvenc B, Yildiz SM, Tekinturhan F, Dincer S, Akyuzluer I, Okten S, and Erkman H
- Subjects
- Female, Humans, Male, Mass Screening, Polymerase Chain Reaction, Prevalence, Retrospective Studies, Turkey, alpha-Thalassemia embryology, Gene Deletion, alpha-Globins genetics, alpha-Thalassemia genetics
- Abstract
Background/aim: alpha-Thalassemia (alpha-thal) is a widespread genetic disorder throughout the world caused primarily by reduced synthesis of the alpha-globin chains, and it has been found at a high incidence in Turkey. Our aim in this study was to determine the frequency and molecular properties of alpha-thal in Adana, Turkey., Material and Methods: A total of 3,000 individuals comprising premarital couples or patients with anemia were screened between 2007 and 2008. Hematological parameters were analyzed using an automatic cell counter, and to detect the carriers of hemoglobin variants, high-performance liquid chromatography was used. Molecular screening of the alpha-globin gene was carried out by an Alpha-Globin StripAssay which is based on multiplex PCR for specific amplification., Results: We have identified 225 cases with alpha-thal and found that the prevalence of alpha-thal is 7.5% in this area. In molecular analyses, the alpha-thal gene mutations alpha(3.7), alpha(4.2), --(MED), --(20.5), alpha(PA-2)alpha, alphaalphaalpha(anti-3.7), and alpha(PA-1)alpha were detected., Conclusion: Our results showed that the alpha-thal mutations represent a great heterogeneity and that the -alpha(3.7) deletion has the highest frequency in Adana., (2010 S. Karger AG, Basel.)
- Published
- 2010
- Full Text
- View/download PDF
17. Nonsynergistic effects of trimetazidine and selenium combination therapy on renal ischemic-reperfusion injury in rats.
- Author
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Karayaylali I, Emre M, Seyrek N, Yildiz SM, Erdogan S, Balal M, Paydas S, Tuncer I, and Alparslan N
- Subjects
- Animals, Drug Synergism, Drug Therapy, Combination, Lipid Peroxidation drug effects, Male, Rats, Rats, Wistar, Reperfusion Injury prevention & control, Acute Kidney Injury prevention & control, Selenium administration & dosage, Trimetazidine administration & dosage, Vasodilator Agents administration & dosage
- Abstract
Reactive oxygen species (ROS) have been postulated to play a major role in postischemic acute renal injury. Moreover, lipid peroxidation has been described as an important pathway of ROS-induced postischemic acute renal failure. To evaluate effects of selenium (Se) and trimetazidine (TMZ) on postischemic renal failure, renal tissue malondialdehyde (MDA) and superoxide dismutase (SOD) concentrations were measured in Wistar rats with ischemic renal failure. Treatment groups consisted of rats treated with TMZ (5 mg/kg orally) or Se (30 microg/kg orally) or TMZ+Se for 15 days. Ischemic groups consisted of rats with clamped left renal arteries for 1 hour. Before left renal arterial clamping, right nephrectomy was performed; after 24 hours, left nephrectomy was done. The animals were divided into 5 groups. Group 1 (n=7) was the nonischemic control group without treatment; Group 2 (n=6) was the ischemic control group treated with physiologic solution; Group 3 (n=5) received TMZ; Group 4 (n=5) received Se; and Group 5 (n=6) received TMZ+Se for 15 days. After TMZ and Se treatment, right renal tissue MDA significantly decreased in Groups 3-5 when compared with those in Group 1. There was no significant difference between nonischemic and ischemic renal tissue MDA in Groups 3, 4, and 5. Postischemic renal tissue SOD levels were higher than nonischemic levels in Group 3. In Groups 4 and 5, no significant differences were observed between nonischemic and ischemic renal tissue SOD levels. Moreover, total scores obtained from histopathologic evaluation of ischemic and nonischemic kidney samples in Groups 3, 4, and 5 were similar, but these scores in Group 2 were significantly different from those of Groups 3, 4, and 5. These results indicate that, under these study conditions, TMZ, Se, and TMZ+Se treatments prevent lipid peroxidation in ischemic and nonischemic renal tissue. Moreover, these treatments prevent histologic findings of postischemic-perfusion renal injury.
- Published
- 2004
- Full Text
- View/download PDF
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