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Kılıç İ, Palabıyık O, Kurultak İ, Sipahi T, Üstündağ S. The role of eNOS gene polymorphisms on contrast induced nephropathy development in chronic kidney disease patients. Ther Apher Dial 2023; 27:240-245. [PMID: 36053923 DOI: 10.1111/1744-9987.13921] [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: 07/02/2022] [Revised: 08/06/2022] [Accepted: 08/16/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Contrast nephropathy is a result of contrast media given through intravascular routes. Nitric oxide gene polymorphisms may alter the hemodynamic stability resulting in medullary ischemia Nitric oxide gene polymorphisms may have an enhancing role in contrast media related renal injury. The aim of this study was to investigate the role of eNOS intron 4a/b, T786C, and G894T gene polymorphisms on contrast-nephropathy risk. METHODS Ninety-four chronic kidney disease patients with contrast nephropathy and 120 chronic kidney disease patients without contrast nephropathy were included. DNA isolation was performed and specific regions of DNA for eNOS G894T, T786C, and intron 4a/b genes were amplified by polymerase chain reaction technique. RESULTS TT polymorphism of T786C gene and GG polymorphism of G894T gene were detected to be possibly protective from contrast induced nephropathy. CONCLUSION Endothelial nitric oxide synthase G894T gene polymorphisms, older age, and presence of diabetes mellitus may influence contrast nephropathy development.
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Affiliation(s)
- İlhan Kılıç
- Nephrology Department, Edirne Sultan 1.Murat State Hospital, Edirne, Turkey
| | | | - İlhan Kurultak
- Nephrology Department, Trakya University, Edirne, Turkey
| | - Tammam Sipahi
- Biophysics Department, Trakya University, Edirne, Turkey
| | - Sedat Üstündağ
- Nephrology Department, Trakya University, Edirne, Turkey
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Ay A, Alkanli N, Atli E, Gurkan H, Gulyasar T, Guler S, Sipahi T, Sut N. Investigation of Relationship Between Small Noncoding RNA (sncRNA) Expression Levels and Serum Iron, Copper, and Zinc Levels in Clinical Diagnosed Multiple Sclerosis Patients. Mol Neurobiol 2023; 60:875-883. [PMID: 36383327 DOI: 10.1007/s12035-022-03135-4] [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: 09/17/2022] [Accepted: 11/08/2022] [Indexed: 11/17/2022]
Abstract
In our study, we aimed to investigate the relationship between microRNA (miRNA) expression levels and serum iron (Fe), copper (Cu), and zinc (Zn) levels in Multiple sclerosis (MS) patients. Total RNA was isolated from peripheral venous blood containing ethylenediaminetetraacetic acid (EDTA) of MS patients and controls. Total RNA was labeled with Cy3-CTP fluorescent dye. Hybridization of samples was performed on microarray slides and arrays were scanned. Data argument and bioinformatics analysis were performed. Atomic absorption spectrophotometer method was used to measure serum Fe, Cu, and Zn levels. In our study, in bioinformatics analysis, although differently expressed miRNAs were not detected between 16 MS patients and 16 controls, hsa-miR-744-5p upregulation was detected between 4 MS patients and 4 controls. This may be stem from the patient group consisting of MS patients who have never had an attack for 1 year. Serum iron levels were detected significantly higher in the 16 MS patients compared to the 16 controls. This may be stem from the increase in iron accumulation based on inflammation in MS disease. According to the findings in our study, hsa-miR-744-5p upregulation has been determined as an early diagnostic biomarker for the development together of insulin resistance, diabetes mellitus associated with insulin signaling, and Alzheimer's diseases. Therefore, hsa-miR-744-5p is recommended as an important biomarker for the development together of diabetes mellitus, Alzheimer's disease, and MS disease. In addition, increased serum Fe levels may be suggested as an important biomarker for neurodegenerative diseases such as Parkinson's disease, Alzheimer's disease, and MS disease.
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Affiliation(s)
- Arzu Ay
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey.
| | - Nevra Alkanli
- Department of Biophysics, Faculty of Medicine, Haliç University, Istanbul, 34060, Turkey
| | - Engin Atli
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
| | - Hakan Gurkan
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
| | - Tevfik Gulyasar
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
| | - Sibel Guler
- Department of Neurology, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
| | - Necdet Sut
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey
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Yukcu F, Sipahi T, Guldiken S, Ustundag S, Sut N. The effects of angiotensinogen M235T/T174M and angiotensin type 1 receptor a1166c gene polymorphisms on the development of diabetic nephropathy in type 2 diabetes mellitus patients. BRATISL MED J 2023; 124:175-181. [PMID: 36598307 DOI: 10.4149/bll_2023_028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
AIMS Diabetic nephropathy is one of the major complications of Type 2 diabetes mellitus. In this study, we aimed to investigate the effects of angiotensinogen M235T/T174M and angiotensin type 1 receptor A1166C gene polymorphisms on the development of diabetic nephropathy in patients with type 2 diabetes mellitus. METHODS This study included 100 type‑2 diabetes mellitus patients with diabetic nephropathy patients (patient group) and 99 type‑2 diabetes mellitus patients without diabetic nephropathy (control group). Polymerase chain reaction and restriction fragment length polymorphism methods were used to identify polymorphisms in the angiotensinogen M235T/T174M and angiotensin type 1 receptor A1166C genes. RESULTS There was no significant difference in genotype frequencies of M235T gene polymorphism between patient and control groups (χ2 = 4.01, df = 2, p = 0.13). There was no significant difference in genotype frequencies of T174M gene polymorphism between patient and control groups (X2 = 0.36, df = 2, p = 0.83). There was no significant difference in genotype frequencies of A1166C gene polymorphism between patient and control groups (χ2 = 0.51, df = 2, p = 0.77). CONCLUSIONS The results showed no significant difference in angiotensinogen M235T/T174M and angiotensin type 1 receptor A1166C gene polymorphisms between the patient and control groups. Future studies are needed to validate the results of this study and to explore underlying mechanisms (Tab. 3, Fig. 3, Ref. 35). Text in PDF www.elis.sk Keywords: type 2 diabetes mellitus, diabetic nephropathy, angiotensinogen gene polymorphism, angiotensin type 1 receptor, gene polymorphism.
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Kılıç İ, Palabıyık O, Taylan G, Sipahi T, Üstündağ S. Ace gene polymorphisms are ineffective on contrast induced nephropathy. Meta Gene 2022. [DOI: 10.1016/j.mgene.2021.100992] [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: 11/28/2022] Open
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Ay A, Alkanli N, Sipahi T, Gulyasar T, Ustundag S, Guldiken S, Sut N. Investigation of the relationship between MTHFR, IRS and CALCA gene polymorphisms and development of diabetic nephropathy in patients with type 2 diabetes mellitus. BIOTECHNOL BIOTEC EQ 2018. [DOI: 10.1080/13102818.2018.1485514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Arzu Ay
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Nevra Alkanli
- Department of Biophysics, Faculty of Medicine, T.C. Halic University, Istanbul, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Tevfik Gulyasar
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Sedat Ustundag
- Department of Internal Medicine (Nephrology), Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Sibel Guldiken
- Department of Internal Medicine (Endocrinology and Metabolic Diseases), Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Necdet Sut
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Trakya University, Edirne, Turkey
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Kilic I, Guldiken S, Sipahi T, Palabiyik O, Akker M, Celik O, Soysal-Atile N, Tuncbilek N, Guven HM, Gundogdu AS, Sut N. Investigation of VEGF and IL-8 Gene Polymorphisms in Patients with Differentiated Thyroid Cancer. Clin Lab 2017; 62:2319-2325. [PMID: 28164553 DOI: 10.7754/clin.lab.2016.160403] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Differentiated thyroid carcinomas (DTC) account for most of the thyroid cancers. The emergence of DTC may be affected by various predisposing genetic alterations and environmental factors The aim of this study was to investigate the role of VEGF C936T and IL-8 A251T gene polymorphisms in the pathogenesis and metastasis of differentiated thyroid cancer. METHODS The study consisted of 101 patients DTC patients and 109 healthy controls. The parameters of the stage of cancer of the DTC patients at the time of diagnosis (TNM) were recorded. DNA was isolated from blood using a DNA isolation kit. VEGF C936T and IL-8 A251T gene polymorphisms were determined using the polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) methods. Distributions of gene polymorphisms were evaluated according to the Hardy-Weinberg principle. RESULTS The TT genotype from the VEGF C936T genotype distributions was higher in the control group than in the DTC group (p < 0.05). In contrast, the IL-8 A-251T genotype distributions were similar in both groups. No relationship was found between either cytokine gene polymorphism or the DTC stages. The frequency of IL-8 TT was higher in the DTC group with lymph gland metastasis (TT 92%) than in the group without lymph gland metastasis (TT 45.9%) (p < 0.05). CONCLUSIONS We consider that the VEGF 936 TT genotype may play a protective role in the development of DTC and that the IL-8 A-251 TT genotype may contribute to the DTC lymph node metastasis. Therefore, these genotypes may hold a key to the evaluation of thyroid nodules and the metastasis of DTC.
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Bulut E, Budak M, Öztürk L, Türkmen MT, Uzun C, Sipahi T. DNA methylation of the prestin gene and outer hair cell electromotileresponse of the cochlea in salicylate administration. Turk J Med Sci 2017; 47:1626-1633. [PMID: 29152945 DOI: 10.3906/sag-1604-137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Background/aim: Activity of the prestin gene may have a role in the pathogenesis of salicylate-induced ototoxicity. We investigated DNA methylation for prestin gene exon 1 in salicylate-injected guinea pigs.Materials and methods: Fifteen guinea pigs (30 ears) underwent audiological evaluation including 1000 Hz probe-tone tympanometry and a distortion product otoacoustic emission (DPOAE) test. The animals were randomly divided into three groups. Groups 2 (8 ears) and 3 (14 ears) were injected with intramuscular saline and sodium salicylate (200 mg/kg), respectively twice daily for 2 weeks. Group 1 (8 ears) received no injection. DPOAE measurements were performed at baseline; after 1, 2, 4, and 8 h (acute effect); and after 1 and 2 weeks (chronic effect). After audiological measurements, the animals were sacrificed for DNA isolation.Results: While a significant decrease (P < 0.01) was found for the acute effect in all frequencies in Group 3 according to baseline measurements, there was no difference in terms of chronic effect. DNA methylation increased during the acute phase of salicylate administration, whereas it returned to initial levels during the chronic phase.Conclusion: Salicylate-induced changes in DPOAE responses may be related to prestin-gene methylation. These results may have important implications for salicylate ototoxicity.
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Alkanli N, Sipahi T, Ay A, Guldiken B, Bakir A, Alkanli SS, Celebi C, Atilgan E. Calcitonin related polypeptide alpha gene polymorphisms according to plasma total homocysteine levels in ischemic stroke patients of Trakya Region. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1372218] [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] [Indexed: 10/18/2022] Open
Affiliation(s)
- Nevra Alkanli
- Department of Biophysics, Faculty of Medicine, T.C. Halic University, Istanbul, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Arzu Ay
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Baburhan Guldiken
- Department of Neurology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Alev Bakir
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, T.C. Halic University, Istanbul, Turkey
| | | | - Canan Celebi
- Department of Neurology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Emre Atilgan
- Department of Health Management, Faculty of Health Sciences, Trakya University, Edirne, Turkey
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Palabiyik O, Karaca A, Taştekin E, Yamasan BE, Tokuç B, Sipahi T, Vardar SA. The Effect of a High-Protein Diet and Exercise on Cardiac AQP7 and GLUT4 Gene Expression. Biochem Genet 2016; 54:731-45. [PMID: 27294385 DOI: 10.1007/s10528-016-9753-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 06/08/2016] [Indexed: 12/18/2022]
Abstract
High-protein (HP) diets are commonly consumed by athletes despite their potential health hazard, which is postulated to enforce a negative effect on bone and renal health. However, its effects on heart have not been known yet. Aquaporin-7 (AQP7) is an aquaglyceroporin that facilitates glycerol and water transport. Glycerol is an important cardiac energy production substrate, especially during exercise, in conjunction with fatty acids and glucose. Glucose transporter 4 (GLUT4) is an insulin-sensitive glucose transporter in heart. We aimed to investigate the effect of HPD on AQP7 and GLUT4 levels in the rat heart subjected to exercise. Male Sprague-Dawley rats were divided into control (n = 12), exercise (E) training (n = 10), HPD (n = 12), and HPD-E training (n = 9) groups. The HPD groups were fed a 45 % protein-containing diet 5 weeks. The HPD-E and E groups were performed the treadmill exercise during the 5-week study period. Real-time polymerase chain reaction and immunohistochemistry techniques were used to determine the gene expression and localization of AQP7 and GLUT4 in heart tissue. Results of relative gene expression were calculated by the 'Pfaffl' mathematical method using the REST program. Differences in AQP7 and GLUT4 gene expression were expressed as fold change compared to the control group. Heart weight/tibia ratio and ventricular wall thickness were evaluated as markers of cardiac hypertrophy. Further, serum glucose, glycerol, and insulin levels were also measured. AQP7 gene expression was found to be increased in the E (3.47-fold, p < 0.001), HPD (5.59-fold, p < 0.001), and HPD-E (3.87-fold, p < 0.001) groups compared to the control group. AQP7 protein expression was also increased in the HPD and HPD-E groups (p < 0.001). Additionally, cardiac mRNA expression levels of GLUT4 showed a significant increase in the E (2.16-fold, p < 0.003), HPD (7.14-fold, p < 0.001), and HPD-E (3.43-fold, p < 0.001) groups compared to the control group. GLUT4 protein expression was significantly increased in the E, HPD, and HPD-E groups compared to the control group (p = 0.024, p < 0.001, and p < 0.001, respectively). Furthermore, Serum glucose levels were significantly different between groups (p < 0.005). This difference was observed between the HPD groups and normal-protein diet groups (C and E). Serum insulin levels were higher for HPD groups compared with the normal-protein diet groups (p < 0.001), whereas no differences were observed between the exercise and sedentary groups (p = 0.111). Serum glycerol levels were significantly increased in the HPD groups compared with control and E groups (p < 0.05 and p < 0.05, respectively). Consumption of HPD supplementation caused the increased effects on AQP7 and GLUT4 expression in rat heart.
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Affiliation(s)
- Orkide Palabiyik
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey.
| | - Aziz Karaca
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Bilge Eren Yamasan
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Burcu Tokuç
- Department of Public Health, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Selma Arzu Vardar
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
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Soysal-Atile N, Guldiken S, Sipahi T, Yukcu F, Ekiz-Bilir B, Huseyin S, Ege T, Tugrul A. Relationship Between an Osteoprotegerin Gene Polymorphism and Diabetic Vascular Complications. Clin Lab 2015; 61:595-601. [DOI: 10.7754/clin.lab.2014.141126] [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: 11/03/2022]
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Sivri N, Unlu A, Palabiyik O, Budak M, Kacmaz Y, Yalta K, Sipahi T. Endothelial nitric oxide synthase intron 4a/b polymorphism in coronary artery disease in Thrace region of Turkey. BIOTECHNOL BIOTEC EQ 2014; 28:1115-1120. [PMID: 26019598 PMCID: PMC4433908 DOI: 10.1080/13102818.2014.980030] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 04/12/2014] [Indexed: 11/30/2022] Open
Abstract
Coronary artery disease (CAD) is one of the frequent cardiovascular mortality causes in the world. Common risk factors explain only about half the risk of CAD. The healthy familial predisposition to CAD, combined with advances in genetic analysis, has led to a number of studies in recent years making an effort to identify the genetic factors that influence the risk. The approach taken by most studies was to examine the association of naturally occurring genetic polymorphisms in candidate genes with risk of or severity of CAD. Endothelial nitric oxide synthase (eNOS) is important for vascular and tissue protection and is found in endothelial cells that encompass the entire vasculature, including the vessels in the heart. Nitric oxide (NO) is produced in a catabolic reaction in the endothelial cells, neurons, glia and macrophages by nitric oxide synthase (NOS) isoenzymes. eNOS is a subgroup of this family of enzymes that catalyses the production of nitric oxide (NO) from L-arginine and oxygen, which leads to vascular relaxation by activating the guanylate cyclase. This finally induces smooth muscle relaxation. The aim of this study was to investigate the allelic frequency and the genotypic distribution of the variable number of tandem repeat 27 (27 VNTR) gene polymorphism in intron 4 of the eNOS (eNOS 4a/b) gene in Thrace region, to compare CAD patients with appropriate healthy controls and to correlate the genetic findings with CAD subtypes. The study group included 281 (153 subjects with CAD and 128 controls) patients. The eNOS polymorphism was identified with a polymerase chain reaction. Genotypes were defined as aa, ab and bb according to the presence of a and b alleles. In this case–control study, we found that there was sensible correlation between eNOS gene intron 4a/b VNTR polymorphism and the risk of CAD in Thrace region of Turkey. However, there was no major difference for the genotype distribution and the allelic frequency among the CAD subtypes. Further studies on the interaction of such genes are needed to clarify the association between eNOS 4a/b polymorphism and CAD patients.
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Affiliation(s)
- N Sivri
- Department of Cardiology, School of Medicine, Trakya University , Edirne , Turkey
| | - A Unlu
- Department of Biophysics, School of Medicine, Trakya University , Edirne , Turkey
| | - O Palabiyik
- Department of Biophysics, School of Medicine, Trakya University , Edirne , Turkey
| | - M Budak
- Department of Biophysics, School of Medicine, Trakya University , Edirne , Turkey
| | - Y Kacmaz
- Department of Cardiology, School of Medicine, Trakya University , Edirne , Turkey
| | - K Yalta
- Department of Cardiology, School of Medicine, Trakya University , Edirne , Turkey
| | - T Sipahi
- Department of Biophysics, School of Medicine, Trakya University , Edirne , Turkey
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Gülyaşar T, Oztürk L, Sipahi T, Bayraktar B, Metin G, Yücesir I, Süt N. GNB3 gene c.825C>T polymorphism and performance parameters in professional basketball players. Acta Physiol Hung 2014; 101:176-184. [PMID: 24901079 DOI: 10.1556/aphysiol.101.2014.2.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
UNLABELLED This study has been conducted to determine whether mean values of peak oxygen consumption (VO(2peak)), anaerobic test parameters and knee isokinetic test measurements are different among guanine nucleotide-binding protein, beta-3 (GNB3) genotype groups in a group of basketball players. METHODS Seventy-two healthy male (mean age, 22.9 ± 5.3 years) basketball players from the first division of national league participated. We studied GNB3 gene c.825C>T (rs5443) polymorphism, then divided the subjects into three groups as CC (n = 21), CT (n = 35), and TT (n =1 6). Mean VO(2peak), Wingate anaerobic test results, and isokinetic knee muscle strength measurements were compared among the genotype groups. RESULTS Mean VO(2peak) (60.1 ± 3.9; 56.7 ± 3.6; and 57.8 ± 3.3, respectively, p < 0.01), mean anaerobic minimum power (5.1 ± 0.4; 5.3 ± 0.5; and 4.4 v 0.5 W/kg, respectively, p < 0.001), mean anaerobic power drop (57.0 ± 6.2; 54.2 ± 6.9; and 62.9 ± 5.3%, respectively, p < 0.001) were significantly different among the study groups, CC, CT, and TT. Individuals with TT genotype exerted lower performance in terms of isokinetic knee muscle strength. CONCLUSION The presence of 825T-allele may impair athletic performance and may serve as a genetic marker of low capacity for athletic performance in male basketball players.
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Affiliation(s)
- T Gülyaşar
- Trakya University Faculty of Medicine, Department of Biophysics Edirne Turkey
| | - Levent Oztürk
- Trakya University Faculty of Medicine, Department of Physiology Edirne Turkey
| | - T Sipahi
- Trakya University Faculty of Medicine, Department of Biophysics Edirne Turkey
| | - B Bayraktar
- Istanbul University Faculty of Medicine, Department of Sports Medicine Istanbul Turkey
| | - G Metin
- Istanbul University Faculty of Medicine, Department of Sports Medicine Istanbul Turkey
| | - I Yücesir
- Istanbul University Physical Education and Sports School Istanbul Turkey
| | - N Süt
- Trakya University Faculty of Medicine, Department of Biostatistics Edirne Turkey
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Basak AA, Sipahi T, Ustundag S, Ozgen Z, Budak M, Sen S, Sener S. Association of Angiotensinogen T174M and M235T Gene Variants with Development of Hypertension in Turkish Subjects of Trakya Region. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2008.10817593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Sipahi T, Budak M, Şen S, Ay A, Şener S. Association Between ACE Gene Insertion (I)/Deletion (D) Polymorphism and Primary Hypertension in Turkish Patients of Trakya Region. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2006.10817350] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Sipahi T, Basak A, Ozgen Z, Aksoy A, Omurlu I, Palabiyik O, Cakina S, Sener S. Lack of Evidence for Contribution of Endothelial Nitric Oxide Synthase Intron 4 VNTR Gene Polymorphisms to Development of Ischemic Stroke in Turkish Subjects. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10817673] [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: 10/25/2022] Open
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Akker M, Güldiken S, Sipahi T, Palabıyık O, Tosunoğlu A, Çelik Ö, Tunçbilek N, Sezer A, Süt N. Investigation of insulin resistance gene polymorphisms in patients with differentiated thyroid cancer. Mol Biol Rep 2014; 41:3541-7. [PMID: 24504452 DOI: 10.1007/s11033-014-3218-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 01/28/2014] [Indexed: 12/15/2022]
Abstract
We aimed to investigate insulin receptor substrate-1 (IRS-1), insulin receptor substrate-2 (IRS-2), insulin-like growth factor binding protein-3 (IGFBP-3) genotypes, which are thought to be involved in the pathogenesis of many solid tumors and have thus far not been studied in patients with differentiated thyroid cancer (DTC). The study consisted of 93 patients diagnosed with DTC (79 females, 14 males) and 111 healthy control subjects (63 females, 48 males). The anthropometric measurements, lipid profiles, thyroid function tests and homeostatic model assessment (HOMA) as an indicator of insulin resistance (IR) of all patients were recorded. In addition IRS-1, IRS-2 and IGFBP-3 gene polymorphisms were determined by using polymerase chain reaction and restriction fragment length polymorphism. Hardy-Weinberg equilibrium was tested for each gene polymorphisms, and genetic effects were evaluated by the Chi Square test and multiple logistic regression. Homeostasis model assessment of insulin resistance (HOMA-IR), body mass index, waist circumference and serum total cholesterol levels were significantly higher in patients with DTC than in the control group. There was no difference between the two groups with respect to IRS-1, IRS-2 and IGFBP-3 gene polymorphisms. In addition, these gene polymorphisms were found to have no effect on lymph node metastases or tumor staging. While, obesity and increased HOMA-IR may be risk factors in DTC development, we suggest that IRS-1, IRS-2 and IGFBP-3 gene polymorphisms do not play an important role in pathogenesis of DTC.
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Affiliation(s)
- Mustafa Akker
- Department of Internal Medicine, School of Medicine, University of Trakya, Edirne, Turkey
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Sipahi T, Güldiken B, Kabayel L, Palabiyik O, Özkan H, Kiliç TO, Süt N, Turgut N. Endothelial Nitric Oxide Synthase and Angiotensin Converting Enzyme Gene Polymorphisms in Migraine Patients. Noro Psikiyatr Ars 2013; 50:274-278. [PMID: 28360555 DOI: 10.4274/npa.y6665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Accepted: 08/13/2012] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION In this study, we investigated the association of migraine with the Variable Number of Tandem Repeats (VNTR), repeated as 27 base pair, gene polymorphism in intron 4 of the endothelial nitric oxide synthase (eNOS) and the insertion/deletion of angiotensin converting enzyme (ACE) gene polymorphisms. METHODS One hundred and five migraine and ninety seven healthy female control subjects were enrolled in the study. The patients were subdivided as migraine with aura and without aura, and the frequency and severity of migraine headaches were recorded. The eNOS VNTR (eNOS 4 a/b) and ACE insertion/deletion gene polymorphisms (ACE I/D) were assessed by polymerase chain reactions. RESULT The allele and genotype frequencies of eNOS 4 a/b gene polymorphism showed no difference between the migraine and control groups. The genotypic distribution of the ACE I/D gene polymorphism in the migraine group significantly differed from that in the control group. The DD and ID genotype increased the risk of migraine as much as 2.571 (95% CI-1.138-5.811) and 4.453 (95% CI-2.006-9.883) compared to the II genotype. The same increased risk sustained for both genotypes in the migraine with aura subgroup, but only the ID genotype remained as the risk factor in the migraine without aura subgroup (OR-3.750, 95% CI-1.493-9.420). No association of gene polymorphisms with migraine frequency and severity was observed. CONCLUSION Our findings support the relationship between migraine and the ACE I/D gene polymorphism. However, no association was found between migraine and the eNOS 4 a/b gene polymorphism.
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Affiliation(s)
- Tammam Sipahi
- Trakya University, Medical Faculty, Department of Biophysics, Edirne, Turkey
| | - Babürhan Güldiken
- Trakya University, Medical Faculty, Department of Neurology, Edirne, Turkey
| | - Levent Kabayel
- Edirne Public Hospital University Medical Faculty, Department of Neurology, Edirne, Turkey
| | - Orkide Palabiyik
- Trakya University, Medical Faculty, Department of Biophysics, Edirne, Turkey
| | - Hülya Özkan
- Edirne Public Hospital University Medical Faculty, Department of Neurology, Edirne, Turkey
| | - Tülay Okman Kiliç
- Trakya University Medical Faculty, Department of Obstetrics and Gynecology, Edirne, Turkey
| | - Necdet Süt
- Trakya University Medical Faculty, Department of Biostatistics, Edirne, Turkey
| | - Nilda Turgut
- Namık Kemal University Medical Faculty, Department of Neurology, Tekirdağ, Turkey
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Cakina S, Gulyasar T, Ozen A, Sipahi T, Kocak Z, Sener S. Relationship between cyclin D1 (A870G) gene polymorphism and lung cancer. Indian J Biochem Biophys 2013; 50:233-236. [PMID: 23898488] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The roles of many genes in the pathophysiology of lung cancer have been investigated in different studies. Cyclin D1 (CCND1) gene plays a significant role in the transition from G1 to S phase of the cell cycle and in the phosphorylation of retinoblastoma tumor suppressor protein. In this study, we aimed to identify the relationship between CCND1 A870G gene polymorphism with lung cancer. CCND1 A870G genotypes were determined in 75 patients with lung cancer and in 65 control subjects. DNA was isolated from blood samples and then CCND1 A870G gene polymorphism was identified using PCR and RFLP assay. The distribution of CCND1 A870G polymorphism did not show any significant differences in all lung cancer patients and controls. There was no correlation between CCND1 A870G polymorphism and histopathological findings. However, the AA + AG genotype was significantly higher in metastatic patients, when compared with non-metastatic patients. Thus, the results show that CCND1 gene polymorphism may be a predictor for detecting patients with poor survival who having metastatic disease.
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Affiliation(s)
- Suat Cakina
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey.
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Ozen A, Kocak Z, Sipahi T, Oz-Puyan F, Cakina S, Saynak M, Ibis C, Karagol H. The prognostic significance of p21 and Her-2 gene expression and mutation/polymorphism in patients with gastric adenocarcinoma. Med Oncol 2012; 30:357. [PMID: 23275116 DOI: 10.1007/s12032-012-0357-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 08/18/2012] [Indexed: 12/20/2022]
Abstract
Analyses of gene expression status and genetic polymorphisms are methods to identify novel histopathological prognostic factors. In patients with gastric cancer, some cell cycle regulators p53, p21, p27 and Her-2 oncogene have been proposed as prognostic factors. We aimed to investigate the expression and mutation/polymorphism of p21 and Her-2 and also relationship between that genes status and histopathological factors and prognosis in patients with gastric cancer. Forty-four patients with locally advanced gastric cancer were analyzed in this study from January 2000 to December 2008. Clinicopathological parameters, expression and mutation/polymorphism of p21 and Her-2 results were used to predict disease-free survival and overall survival. The positive expression of p21 and Her-2 was observed in 61.4 % (n = 27) and 9.1 % (n = 4) of all 44 tumors, respectively. p21 gene mutation and Her-2 gene polymorphism were detected in 20 % (n = 11) and 2.3 % (n = 1, II phenotype) of cases, respectively. The negative expression of p21 was correlated significantly with diffuse and undifferential type histologies, whole gastric involvement and positive vascular/neural invasion. The median survival rate of patients with negative expression was significantly poorer than that of patients with positive expression of p21 (17 vs. 27 months, p = 0.01, cox regression). p21 mutation was significantly higher in patients with diffuse (p = 0.03) and undifferential (p = 0.02) type histologies. There was no statistically significant association between histopathological parameters and Her-2 gene polymorphism/expression. The negative expression of p21 correlates with disease survival and may be a poor prognostic factor in patients with resected gastric cancer treated with adjuvant chemotherapy.
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Affiliation(s)
- Alaattin Ozen
- Department of Radiation Oncology, Medical Faculty Hospital, Trakya University, 22030 Edirne, Turkey.
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Özen A, Cakina S, Sipahi T, Cosar R, Gulyasar T, Sener S, Cukurcayir F, Uzal M. EP-0975 EVALUATION OF P21 GENE MUTATION IN PATIENTS WITH TRIPLE NEGATIVE AND ER(−), PR(−), HER-2(+) BREAST CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71308-7] [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: 11/30/2022]
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Salih B, Sipahi T, Dönmez EO. Ancient nigella seeds from Boyali Höyük in north-central Turkey. J Ethnopharmacol 2009; 124:416-420. [PMID: 19505557 DOI: 10.1016/j.jep.2009.05.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Revised: 05/11/2009] [Accepted: 05/28/2009] [Indexed: 05/27/2023]
Abstract
AIM OF THE STUDY The seeds of nigella (black cumin) (Nigella sativa L.) have been widely used as a natural remedy, either alone or in combination with bee products, for the treatment of many acute as well as chronic conditions for centuries, especially in the Middle East and Southeast Asia. In consideration of potential utilization, in recent years the seeds have been extensively studied in terms of pharmacological effects. It has been shown that the seeds have significant effects on multiple biological systems. In addition, the protective roles of the seeds with bee products (honey and wax) have been recently proved. This study reports the palaeoethnobotanical find of nigella seeds recovered in a pilgrim flask from the Old Hittite Period level of Boyali Höyük (Mound), dating from around 1650 BC, in north-central Turkey. The study also deals with a comparison between the chemical properties of the Boyali Höyük nigella seeds (ancient seeds) and those of modern nigella seeds. The results of chemical analysis of the debris found in the pilgrim flask to test the presence of bee product are also presented here. MATERIALS AND METHODS All macro-remains found in the pilgrim flask were first examined under a zoom stereomicroscope for specific determination and all were identified as nigella seeds using the reference collection of modern seeds. Ethyl alcohol and dichloromethane (Aldrich, Buch-Switzerland) were used for the extraction of the ancient seeds and modern nigella seeds to trace both polar and non-polar chemical compounds by a Gas Chromatography-Mass Spectrometer (GC-MS) system. Characterization of the chemical compounds in propolis extracts was also made by GC-MS. RESULTS The GC-MS chromatograms showed that the ancient and modern seed samples were similar in essential oil acids. Many organic compounds of bee products, such as wax and phenolic antioxidants, were also detected in the container. CONCLUSION The results of this study indicated that the Hittite pilgrim flask contained a pure cache of nigella seeds mixed with bee products, wax and propolis. There has been no direct archaeological evidence for medicinal use of nigella seeds with bee products by the inhabitants of Boyali Höyük or the Hittities so far. However, in view of the folkloric use of nigella seeds in combination with bee products for treatments of disorders and promotion of health, it is thought that the Boyali Höyük material would represent a remedy used by the Hittites in Anatolia about 3600 years ago.
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Affiliation(s)
- B Salih
- Department of Chemistry, Hacettepe University, 06800, Beytepe, Ankara, Turkey
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Guldiken B, Sipahi T, Guldiken S, Ustundag S, Budak M, Turgut N, Ozkan H. Glu298Asp polymorphism of the endothelial nitric oxide synthase gene in Turkish patients with ischemic stroke. Mol Biol Rep 2008; 36:1539-43. [DOI: 10.1007/s11033-008-9348-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2008] [Accepted: 08/26/2008] [Indexed: 10/21/2022]
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Abstract
Activating mutations of the G proteins, Gsalpha (gsp) and Gi2alpha (gip) have been reported in subsets of pituitary tumors. The objective of the study was to assess the frequency of gsp and gip mutations in pituitary tumors from Turkish patients and to investigate the possibility of mutations of protein kinase A catalytic subunit (PKAC) that activates the downstream effectors of adenylyl cyclase. PCR-amplified genomic DNA was analyzed for the presence of mutations in codons 201 and 227 of Gsalpha, codon 179 and 205 of Gi2alpha and codon 196 of PKAC, by single strand conformation polymorphism analysis, allele-specific oligonucleotide hybridization and DNA sequencing. Twenty-two patients from Turkey, 15 females and 7 males were investigated; 7 somatotroph adenomas, 7 clinically non-functioning tumors, 7 prolactinomas and 1 corticotroph adenoma. G protein mutations were identified in 6 of 22 (27.3%) pituitary tumors. Four tumors (3/7 somatotroph adenomas, 43%, 1/7 clinically non-functioning tumor) demonstrated gsp mutations at codon 201 arginine to cysteine and one recurrent somatotroph adenoma demonstrated a mutation of the Gi2alpha gene at codon 193 lysine to arginine. One tumor exhibited a C to T variation in the intervening sequence between codons 179 and 205 of the Gi2alpha gene. No mutations at codon 227 of Gsalpha, codons 179 and 205 of Gi2alpha and codon 196 of the PKAC gene were identified.
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Affiliation(s)
- Beki Kan
- Department of Biophysics, Marmara University School of Medicine, Istanbul, Turkey.
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Kara F, Yesildaglar N, Tuncer RA, Semerci N, Onat N, Yilmazer YC, Sipahi T, Erkaya S. A case report of prenatally diagnosed ophthalmo-acromelic syndrome type Waardenburg. Prenat Diagn 2002; 22:395-7. [PMID: 12001194 DOI: 10.1002/pd.331] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [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: 11/06/2022]
Abstract
Ophthalmo-acromelic syndrome type Waardenburg is an extremely rare autosomal recessive syndrome comprising eye malformations ranging from true anophthalmia to mild microphthalmia with acromelic malformations. We report a case of ophthalmo-acromelic syndrome type Waardenburg diagnosed prenatally.
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Affiliation(s)
- F Kara
- Zübeyde Hn. Women's Hospital, Ankara, Turkey
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Abstract
Heterozygosity and/or homozygosity for mutations at the genes of the enzymes involved in homocysteine metabolism may confer an increased risk for thrombosis by causing hyperhomocysteinemia. Although the mutations related to homocysteine metabolism possibly increase the risk of stroke, the data are conflicting and there are very few reports linking these defects to acute stroke in children. We aimed to study the role of these mutations in Turkish children with ischemic stroke. Forty-six patients having cerebral infarct were clinically diagnosed, and the infarction verified with magnetic resonance imaging of the brain was included in the study. All patients were below the age of 18 (10 months to 18 years). Sixty-eight controls, consecutively selected among healthy unrelated subjects from the same geographic area of Turkey without personal and family history of thrombosis, stroke or Behest's disease, were included. Genotyping for the common mutations was carried out by the methods described previously. There was no difference between the pediatric stroke patients and controls for the distribution of methylene tetrahydrofolate reductase (MTHFR) 677 C-T, MTHFR 1298 A-C, methylene tetrahydrofolate dehydrogenase (MTHFD) 1958 G-A and methionine synthase reductase (MTRR) 66 A-G alleles. There was no risk for double gene alterations (MTHFR 677 C-T vs. 1298 A-C) after individuals with FV 1691 A mutation is excluded. Twelve of the 46 patients were found to carry FV 1691 A mutation (26.0%), one being homozygote. The cerebral infarct risk for FV 1691 A was found to be 6.4 (CI 95% 1.7-23.0). Eight of the 46 patients were found to carry PT 20210 A mutation (16.6%). Two of the FV 1691 A heterozygous patients carried PT 20210 A mutation at the same time (4.2%). As a conclusion, we can say that FV 1691 A and PT 20210 A mutations are important and must be included to the routine analysis of pediatric stroke patients.
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Affiliation(s)
- N Akar
- Pediatric Molecular Genetics and Pediatric Neurology, Department of Ankara University, Ankara, Turkey.
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Akar N, Duman T, Akar E, Deda G, Sipahi T. The alpha2 Gene alleles of the platelet collagen receptor integrin alpha2 beta1 in Turkish children with cerebral infarct. Thromb Res 2001; 102:121-3. [PMID: 11323022 DOI: 10.1016/s0049-3848(01)00228-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 10/18/2022]
Abstract
The possible role of point mutations in the platelet integrin alpha2 beta1 gene in Turkish children with ischemic stroke was evaluated in this study. The case-control study included 44 pediatric patients with cerebral infarct (age range, 10 months to 18 years) and 96 healthy unrelated individuals. Genotyping was performed according to previously described methods. Distribution of the three haplotypes were 36.4%, 45.3%, 10.4% and 31.8%, 50.0%, 13.6% for the controls and the patients, respectively. A new fourth haplotype was found which was 7.8% and 4.5% respectively. Our data indicated that these haplotypes are not risk factors in pediatric stroke group.
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Affiliation(s)
- N Akar
- Department of Pediatric Molecular Genetics, Ankara University, Ankara, Turkey.
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Sipahi T, Akar N, Dinçer N, Eğin Y, Cin S. Serum interleukin-2 and interleukin-6 levels in zinc deficiency. J Trop Pediatr 2001; 47:120-2. [PMID: 11336132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Sipahi T, Akar N, Dinçer N, Cin S. Plasma zinc levels in patients with iron-deficiency anemia. J Trop Pediatr 2001; 47:122-3. [PMID: 11336133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Sipahi T, Duru F, Yarah N, Akar N. Compound heterozygosity for factor V Leiden and prothrombin G20210A mutations in a child with Budd-Chiari syndrome. Eur J Pediatr 2001; 160:198. [PMID: 11277387 DOI: 10.1007/pl00008425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sahin F, Sipahi T, Doğan H, Oksal A, Ertan U. Special feature: pathological case of the month. Glycogen storage disease with renal tubular dysfunction (type XI, Fanconi-Bickel syndrome). Arch Pediatr Adolesc Med 2000; 154:1165-6. [PMID: 11074862 DOI: 10.1001/archpedi.154.11.1165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Yarali N, Duru F, Sipahi T, Kara A, Teziç T. Parvovirus B19 infection reminiscent of myelodysplastic syndrome in three children with chronic hemolytic anemia. Pediatr Hematol Oncol 2000; 17:475-82. [PMID: 10989468 DOI: 10.1080/08880010050120836] [Citation(s) in RCA: 24] [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] [Indexed: 10/17/2022]
Abstract
The authors have seen transient pancytopenia with erythroid hypoplasia and striking trilineage myelodysplasia reminiscent of true myelodysplastic syndrome (MDS) in 3 children, 1 with thalassemia intermedia and the other 2 with previously undiagnosed hereditary spherocytosis. In these 3 children transient pancytopenia and myelodysplasia coincided with serological evidence of acute parvovirus-B19 (PV-B19) infection, strongly suggesting their relevance. It is of interest that these 3 cases were encountered within a period of 6 months. This might be an incidental event, but it might also be concluded that acute PV-B19 infection associated transient pancytopenia with morphological appearance of MDS may occur more frequently than reported in the literature. So, PV-B19-associated nonclonal MDS should be considered in the differential diagnosis of true clonal MDS.
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Affiliation(s)
- N Yarali
- Department or Pediatric Hematology, Dr. Sami Ulus Children's Disease Centre, Ankara, Turkey.
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Sipahi T, Uner C, Yildiz YT, Akar N. Inherited protein-C deficiency, factor V G 1691 A and FV A 4070 G mutations in a child with internal cerebral venous thrombosis. Pediatr Radiol 2000; 30:420-3. [PMID: 10876830 DOI: 10.1007/s002470050776] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 10/27/2022]
Abstract
Common systemic disorders that cause cerebral venous thrombosis (CVT) in children include dehydration, trauma, infection and haematological diseases. No cause for CVT is identified in one quarter of all cases. We report a child with thalamic infarcts due to internal CVT who had congenital heterozygous protein-C deficiency, factor V G 1691 A and A 4070 G mutations.
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Affiliation(s)
- T Sipahi
- Department of Paediatric Haematology, Dr Sami Ulus Children's Medical Centre, Altindağ, Ankara, Turkey
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Abstract
Inherited gene defects related to the coagulation system have been reported as risk factors for stroke. Recently, a genetic component in the factor V (FV) gene that contributes to activated protein C resistance both in the presence and absence of FV 1691 G-->A was reported. This highly conserved FV gene haplotype was marked as R2 polymorphism, an A to G alteration at position 4070 in exon 13 that predicts the His 1299 Arg substitutions. The aim of this study was to evaluate the role of this mutation in Turkish children with ischemic infarct. The case-control study included 48 patients with cerebral infarction; all were 18 years of age or younger (range: 10 months to 18 years). Ten (20.8%) of the 48 patients were found to carry the FV 1299 His-->Arg mutation, one being homozygous. One patient who had a combination of FV 1691 G-->A and protein C deficiency also carried the FV 4070A mutation. A homozygous FV 1299A patient had a prothrombin (PT) 20210A mutation in the heterozygous state. The cerebral infarct risk for FV 1299 was found to be 2.4 (95% confidence interval 0.9-6.8) for all groups. When underlying conditions were excluded, the incidence of FV 1299 was found to be 8/35 (22.8%), but the risk was almost the same. When two other common thrombophilic mutations (i.e. FV 1691 G-->A and PT 20210 G-->A) were excluded, the incidence of FV 4070 mutation increased to 7/21 (33.3%). The risk also increased to 3.9 (95% confidence interval 1.2-12.3).
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Affiliation(s)
- N Akar
- Pediatric Molecular Genetics and Pediatric Neurology Departments of Ankara University, Ankara, Turkey.
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Akar N, Akar E, Deda G, Sipahi T, Orsal A. Factor V1691 G-A, prothrombin 20210 G-A, and methylenetetrahydrofolate reductase 677 C-T variants in Turkish children with cerebral infarct. J Child Neurol 1999; 14:749-51. [PMID: 10593555 DOI: 10.1177/088307389901401113] [Citation(s) in RCA: 41] [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] [Indexed: 11/16/2022]
Abstract
Inherited gene defects related to the coagulation system have been reported as risk factors for ischemic stroke. These gene defects include a G-A transition at nucleotide 1691 in exon 10 of the Factor V gene causing activated protein C resistance; a G-A transition in the 3' untranslated region of the prothrombin gene at nucleotide position 20210 (G-A), which is associated with increased levels of prothrombin activity; and a C-T polymorphism at nucleotide 677 in the methylenetetrahydrofolate reductase gene responsible for an alanine to valine substitution, resulting in the synthesis of a thermolabile form of methylenetetrahydrofolate reductase that causes increased levels of homocysteine. The case-control study included 28 patients with cerebral infarction; all were 18 years of age or younger (range, 10 months to 18 years). Seven (25%) of the 28 patients were heterozygous for the FV1691 mutation. Five (17.8%) of the patients carried the PT20210A mutation. Two (7.1%) of the patients carried both mutations. When compared to controls, the difference was significant for both mutations (P = .007; .04). The frequency of allele T of methylenetetrahydrofolate reductase 677 was 0.3214, which was not significant when compared to controls (0.231; P = .3). A total of 12 (42.8%) patients carried one or both of the mutations FV1691 G-A and PT20210 G-A. From our data, it appears that FV1691 G-A and PT20210 G-A are associated with cerebral infarct risk independently. Risk assessment of double prothrombotic gene alterations did not reveal synergy between these mutations. In conclusion, the presence of FV1691 A and PT20210 A mutations but not the methylenetetrahydrofolate reductase 677 TT mutation correlate with the occurrence of cerebral infarction in children.
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Affiliation(s)
- N Akar
- Department of Pediatric Molecular Genetics, Ankara University, Turkey.
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Akar N, Akar E, Deda G, Sipahi T, Ezer U. Coexistence of two prothrombotic mutations, factor V 1691 G-A and prothrombin gene 20210 G-A, and the risk of cerebral infarct in pediatric patients. Pediatr Hematol Oncol 1999; 16:565-6. [PMID: 10599099 DOI: 10.1080/088800199276886] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
It is known that a blood transfusion is necessary for survival in patients with thalassemia, but it may cause myocardial dysfunction due to myocardial siderosis as in other organs. The aim of this study was to evaluate myocardial perfusion by means of stress thallium scanning (MPS) and left ventricular functions by rest radionuclide ventriculography (RNV). Twenty-one patients at ages 9-16 (mean 12.1 +/- 3.2) who have been diagnosed with thalassemia for 4-15 years (mean 12.7 +/- 4.8) were included in the study. They had blood transfusions 78-318 times (mean 162.1 +/- 71). MPS and RNV was performed within two days after the any transfusion. MPS showed ischemia in 3 patients and normal perfusion in 18 patients. RNV revealed normal systolic parameters (wall motion, EF, PER, TPE) but diminished diastolic parameters (TPF, PFR) compared with normal values (p < 0.05). We conclude that ischemia or fixed defects may be seen in stress MPS as a result of cardiac involvement in patients with thalassemia. But, RNV is an important and preferable test for the early detection of subclinic cardiomyopathy. RNV may therefore show diastolic abnormalities before the systolic abnormalities show up.
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Affiliation(s)
- N O Küçük
- Department of Nuclear Medicine, Ankara University Medical School, Turkey
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Sipahi T, Duru F, Ciftçi E, Sahin F, Akar N. Cerebral infarct associated with prothrombin gene G 20210 A variant in a Turkish child with cystic fibrosis: an unusual coexistence. Eur J Haematol Suppl 1999; 62:281-3. [PMID: 10227463 DOI: 10.1111/j.1600-0609.1999.tb01759.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sipahi T, Okumuş N, Sahin F, Kuyucu N, Tan E, Gürer Y. Congenital insensitivity to pain with anhidrosis: report of a 68-day-old case. Eur J Pediatr 1999; 158:268-9. [PMID: 10094459 DOI: 10.1007/s004310051068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
The aim of this study was to investigate the serum levels of interleukin-2 (IL-2) and interleukin-6 (IL-6) in children with iron deficiency anemia before and after iron supplementation. Twenty-five children with iron deficiency anemia 6 months to 3 years of age were included in the study. Ten age- and sex-matched healthy children constituted the control group. In the iron-deficiency group the production of IL-2 was found to be significantly lower than that in controls and became normal after iron supplementation (P < .001). But there was no difference in serum levels of IL-6 in iron deficiency anemia before and after iron supplementation (P > .05).
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Affiliation(s)
- T Sipahi
- Dr. Sami Ulus Children's Medical Center, Department of Pediatric Hematology, Ankara University, Turkey
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44
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Abstract
Twenty-two deliveries were followed by emergency postpartum hysterectomy among 109,842 deliveries in the last 10 years, an incidence of 1 in 4992 deliveries (20/100,000). The leading causes of emergency postpartum hysterectomy were uterine rupture in 8 (36.3%), uterine atony in 7 (31.8%), and abnormally adherent placenta in 6 (27.3%) patients. Five of the uterine rupture cases followed previous cesarean births, whereas the other 3 followed dystocia. Of the 7 patients with uterine atony, 4 were after vaginal delivery and 3 were after cesarean birth. Of the 6 patients with adherent placenta, 4 had repeat cesarean deliveries and the other 2 were subjected to cesarean section for postterm pregnancies. The maternal mortality rate was found to be 4.5% (1/22). The perioperative morbidity included blood transfusion in 72.2%, febrile morbidity in 40.9%, and wound infection in 13.6% of the patients. Fetal mortality rate was 45.4%.
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Affiliation(s)
- R Tuncer
- Zübeyde Hanim Maternity Hospital, Altundağ, Ankara, Turkey
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45
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Abstract
BACKGROUND To determine the leading causes of maternal mortality in a large maternity hospital and to define priorities regarding this subject throughout Turkey. METHODS Retrospective, institutional study among 100,531 live births between 1983 and 1992. RESULTS Seventeen maternal deaths took place in this institution. Thus, the overall maternal mortality ratio was 16.9 per 100,000. The leading causes of maternal mortality were hemorrhage in seven (41.2%) and pulmonary embolism in six (35.3%) patients. The majority of deaths were observed in the 25-29 and 30-34 age groups and in patients with parity more than two. CONCLUSION The relatively low figure of 16.9/100,000 for maternal mortality may be seen as a promising health index. However, obstetric hemorrhage is still the leading cause of this series. Pregnant women less than 20 years old and greater than 35 years old, and grand multiparous women as well as women with hypertension and heart disease are at high mortality risk. The observation of such cases demands further efforts for improved obstetric care in the hospital and throughout Turkey.
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Affiliation(s)
- R A Tuncer
- Zübeyde Hanim Maternity Hospital, Section of Obstetrics, Altindağ, Ankara, Turkey
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Karademir S, Demirçeken F, Atalay S, Demircin G, Sipahi T, Teziç T. Acute rheumatic fever in children in the Ankara area in 1990-1992 and comparison with a previous study in 1980-1989. Acta Paediatr 1994; 83:862-5. [PMID: 7981564 DOI: 10.1111/j.1651-2227.1994.tb13158.x] [Citation(s) in RCA: 19] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Two hundred and twenty-eight patients with acute rheumatic fever (ARF), who were admitted to Dr Sami Ulus Children's Hospital between January 1990 and November 1992, were evaluated. Compared with the 1980s, an increase in the frequency of the disease was observed. The majority of patients (56.5%) were between 9 and 12 years old and 36.8% were admitted in winter. One hundred patients had arthritis only, 59 carditis and 40 chorea; 5 had carditis and chorea and 24 had arthritis and carditis. Nineteen percent of patients had a history of a previous attack. Seven of 84 patients with carditis had congestive heart failure and 2 had pericarditis. Cardiomegaly was present in 36 patients. The mitral valve was affected in 77 patients, tricuspid valve in 1 patient and both miral and aortic valves in 6 patients. One patient died as a result of severe congestive cardiac failure. Twenty-one patients had a recurrent attack. We observed that ARF is still a significant cause of morbidity in our country. As the disease is preventable by the eradication of streptococcus, we conclude that more effort should be made in the early detection and treatment of streptococcal infections.
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Affiliation(s)
- S Karademir
- Doctor Sami Ulus Children's Hospital, Ankara, Turkey
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48
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Abstract
A 20-year-old-woman, gravida II, para I, was admitted to the hospital with vaginal bleeding 17 weeks after her last menstrual period. Her pelvic examination was found to be compatible with 3.5 months of pregnancy by the attending physician. Ultrasonographic examination revealed an empty uterus and two dead fetuses with biometric data consistent with 14 weeks of pregnancy located in the left ovarian region. She was subjected to an explorative laparotomy and an intact gestational sac including the left ovary with normal tubes was observed; a unilateral salpingo-oophorectomy was carried out. Histologic studies confirmed a twin ovarian pregnancy. Although rare, ovarian pregnancy should be considered when approaching a case of ectopic pregnancy. Early diagnosis is generally based on ultrasonographic findings. Advanced cases with unruptured sac and multiple gestations may also be present.
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Affiliation(s)
- R Tuncer
- Department of Obstetrics and Gynecology, Zübeyde Hanum Maternity Hospital, Ankara, Turkey
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