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Demirhan O, Yüksel B, Yilmaz S, Cetinel N. Different Clinical Effects of Ectodermal Dysplasias in Four Generations. Actas Dermosifiliogr 2023; 114:918-920. [PMID: 37276991 DOI: 10.1016/j.ad.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 09/25/2022] [Accepted: 11/22/2022] [Indexed: 06/07/2023] Open
Affiliation(s)
- O Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Çukurova, Adana, Turkey.
| | - B Yüksel
- Department of Pediatrics, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - S Yilmaz
- Department of Endodontics, Faculty of Dentistry, Cukurova University, Adana, Turkey
| | - N Cetinel
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Çukurova, Adana, Turkey
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Demirhan O, Yüksel B, Yilmaz S, Cetinel N. Different Clinical Effects of Ectodermal Dysplasias in Four Generations. Actas Dermosifiliogr 2023; 114:T918-T920. [PMID: 37716501 DOI: 10.1016/j.ad.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 09/25/2022] [Accepted: 11/22/2022] [Indexed: 09/18/2023] Open
Affiliation(s)
- O Demirhan
- Departamento de Medicina Biológica y Genética, Facultad de Medicina, Universidad de Çukurova, Adana, Turquía.
| | - B Yüksel
- Departamento de Pediatría, Facultad de Medicina, Universidad de Çukurova, Adana, Turquía
| | - S Yilmaz
- Departamento de Endodoncia, Facultad de Odontología, Universidad de Çukurova, Adana, Turquía
| | - N Cetinel
- Departamento de Medicina Biológica y Genética, Facultad de Medicina, Universidad de Çukurova, Adana, Turquía
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Demirhan O, Hergüner Ö, Tunç E. A Cytogenetic Study of Turkish Children with Global Developmental Delay. J Pediatr Genet 2022. [DOI: 10.1055/s-0042-1758872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
AbstractGlobal developmental delay (GDD)/intellectual disability (ID) is common in children and its etiology is unknown in many cases. Chromosomal abnormalities are predominant genetic causes of GDD/ID. The aim of this study is to determine the genetic risk factors that may be involved in the etiology of GDD/ID. In this study, 810 children with moderate to severe, clinically unexplained GDD/ID for whom cytogenetic analysis were performed were retrospectively rescreened. The results showed that GDD/ID affected more females than males (2 girls:1 boy). A total of 54 children (6.7%) with GDD showed chromosomal aberrations (CAs): 59.3% of these CAs were structural aberrations, and the rest were numerical aberrations (40.7%). Specifically, inversions, deletions, and reciprocal and robertsonian translocations, which were detected in 1, 0.7, 0.8, and 0.4% of the children, respectively, constituted important categories of structural CAs. Among numerical CAs, classic Turner and mosaics were detected in 1.2% of all children. Trisomy 21 and mosaic trisomy 21 were detected in 1% of the children. Marker chromosomes and 47,XXY karyotypes were found in two children each. Our results suggest that female sex is more affected by CAs among GDD/ID cases, and cytogenetic analysis is useful in the etiological diagnosis of GDD/ID.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
| | - Özlem Hergüner
- Department of Child Neurology, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
| | - Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
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Demirhan O, Tunç E. Cytogenetic status of patients with congenital malformations or suspected chromosomal abnormalities in Turkey: a comprehensive cytogenetic survey of 11,420 patients. Chromosoma 2022; 131:225-237. [PMID: 36219240 DOI: 10.1007/s00412-022-00782-3] [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: 03/17/2022] [Revised: 09/22/2022] [Accepted: 09/26/2022] [Indexed: 11/29/2022]
Abstract
Cytogenetic analysis is helpful in diagnostic workup of patients having prenatal or early postnatal medical problems and provides a basis for genetic counseling or deciding on clinical treatment options. Chromosomal abnormalities (CAs) constitute one of the most important category of genetic defects which have the potential to cause irreversible disorders. In this study, chromosome analysis results of 11,420 patients having congenital malformations or suspected of having chromosomal abnormalities, who were referred to Çukurova University Research and Training Hospital Cytogenetic Laboratory over a 16-year period, were investigated, retrospectively. Of all patients analyzed, CAs were found in 1768 cases, accounting for 15.5% of all cases. It was observed that 1175 (15.5%) of CAs were numerical (10.3%) and 593 (5.2%) were structural chromosome abnormalities. Among numerical CAs, Down syndrome (DS), Turner syndrome (TS) and Klinefelter syndrome (KS) constituted common categories which were observed in 7, 1.1 and 0.9% of all cases, respectively. Among the structural CAs, translocations, inversions, fragilities, deletions,, and others were the most common categories and constituted 2.2, 0.9, 0.9, 0.7, 0.3, and 0.3% of all cases, respectively. The sex ratio (male/female) of all cases was 1.01 and of DS cases was 1.6. Our results further confirmed that cytogenetic analysis is necessary in terms of making definite diagnosis of genetic disorders, providing proper genetic counseling and clinical treatment, assessing the recurrence risk, and preventing the hereditary genetic diseases and disorders. Besides, such studies will greatly assist in constituting national and international databases or records of genetic disorders.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey.
| | - Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
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Tardieu C, Demirhan O, Akbal E, Ozgozen L, Biçer ÖS, Delapré A, Cornette R, Herrel A. Modifications of the locomotor system in habitually quadrupedal humans. J Anat 2022; 241:765-775. [PMID: 35661351 DOI: 10.1111/joa.13693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 05/08/2022] [Accepted: 05/08/2022] [Indexed: 12/01/2022] Open
Abstract
The acquisition of habitual bipedal locomotion, which resulted in numerous modifications of the skeleton was a crucial step in hominid evolution. However, our understanding of the inherited skeletal modifications versus those acquired while learning to walk remains limited. We here present data derived from X-rays and CT scans of quadrupedal adult humans and compare the morphology of the vertebral column, pelvis and femur to that of a bipedal brother. We show how a skeleton forged by natural selection for bipedal locomotion is modified when used to walk quadrupedally. The quadrupedal brother is characterised by the absence of femoral obliquity, a very high anteversion angle of the femoral neck, a very high collo-diaphyseal angle and a very reduced lordosis. The differences in the pelvis are more subtle and complex, yet of functional importance. The modification of the ischial spines to an ischial ridge and the perfectly rounded shape of the sacral curvature are two unique features that can be directly attributed to a quadrupedal posture and locomotion. We propose a functional interpretation of these two exceptional modifications. Unexpectedly, the quadrupedal brother and sister show a greater angle of pelvic incidence compared to their bipedal brother, a trait previously shown to increase with learning to walk in bipedal subjects. Moreover, the evolution from an occasional towards a permanent bipedality has given rise to a functional association between the angle of pelvic incidence and the lumbar curvature, with high angles of incidence and greater lumbar curvature promoting stability during bipedal locomotion. The quadrupedal brother and sister with a high angle of incidence and a very reduced lordosis thus show a complete decoupling of this complex functional integration.
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Affiliation(s)
- Christine Tardieu
- UMR 7179 C.N.R.S/M.N.H.N. MECADEV, Département Adaptations du Vivant, Paris, France
| | - Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Eylül Akbal
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Levent Ozgozen
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Ömer Sunkar Biçer
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Arnaud Delapré
- Muséum National d'Histoire Naturelle (MNHN), Institut de Systématique, Évolution, Biodiversité, (ISYEB), UMR 7205 CNRS/MNHN/UPMC/EPHE, Paris, France
| | - Raphaël Cornette
- Muséum National d'Histoire Naturelle (MNHN), Institut de Systématique, Évolution, Biodiversité, (ISYEB), UMR 7205 CNRS/MNHN/UPMC/EPHE, Paris, France
| | - Anthony Herrel
- UMR 7179 C.N.R.S/M.N.H.N. MECADEV, Département Adaptations du Vivant, Paris, France
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Sagliker Y, Demirhan O, Sagliker HS, Sagliker Ozkaynak P, Paylar N, Sagliker C, Emir I, Ozkaynak I. P0907STRIKING NOVEL MULTI-MISMUTATIONS ON GNAS1,FGF23,FGFR3 GENES IN CKD WITH SECONDARY HYPERPARATHYROIDISM.(SH).SAGLIKER SYNDROME(SS).SS IS A COMBINATION-COMPULSION OF BONE DYSPLASIAS-HEREDITARY OSTEODYSTROPHİES AND SH AND CKD. Nephrol Dial Transplant 2020. [DOI: 10.1093/ndt/gfaa142.p0907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and Aims
Sagliker Syndrome seems to be related to CKD and the consequent SH.SS starts and develops particularly before puberty while CKD reaches stage III level with overt SH. Since it occurs in some patients, it is plausible to think SS is genetically predisposed.GNAS1, FGF23 and FGFR3 genes' mismutations on the genesis of SS is unclear, and no data are available.
Method
We conducted clinical, radiological, laboratory studies and screening for mutations in GNAS1 gene in 23 patients, FGF23 and FGFR3 genes in 17 patients.DNA isolations were performed from blood samples and mutations regions were amplified by Polymerase Chain Reaction (PCR).
Results
In 73.9% (17/23) patients, 17 different genetic abnormalities in GNAS1 were detected.Seven (58.3% ) of the 12 nucleotide alterations comprised novel missense mutations in different manners. There were also 6 heterozygous tranversion polymorphism in exons.Six of them were introngenic mismutations found in exons (introns; 65626, 70387 and 70817).We found 10 different mismutations in FGF23 gene. 8 were novel mismutations and are defined first in our study. 3 of them were in intronic region near exon 2.In FGFR3 gene we also found 22 different mutations. 16 were novel mismutations defined first in our study.8 of them were in intronic region near exon 11,last 2 were in non-coding exonic region of exon 18. Twelve mismutations were found in exons, 8 were found in introns and 2 were found in non-coding exonic regions. One was in the exon-exon junction region between exon 11 and 12 Therefore this mutation might be preventing splicing of this intron.
Conclusion
There are plenty of mutations on those three genes in Sagliker Syndrome and are consistent with an insufficiency of those three genes playing a role in the clinical phenotype of loss of function mutations and with functional alleles having predominant roles in preventing the hormonal resistance.Since the incidence of
CKD late stage III is around 8% in the world but the incidence of Sagliker Syndrome is around 0.5% in CKD patients, these gene mismutations might be responsible for bone Displasias-- Hereditary Osteodystrophies such as Mc Cune- Albright syndrome, achondroplasias etc.., although our patients were not resembling any of them but they could be in between and Sagliker Syndrome might be a combination-compulsion of Bone displasias-Hereditary Osteodystrophies and SH and CKD.
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Affiliation(s)
| | - Osman Demirhan
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey
| | | | | | - Nuray Paylar
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey
| | - Cemal Sagliker
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey
| | - Idris Emir
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey
| | - Isıl Ozkaynak
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey
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SAGLIKER YAHYA, Demirhan O, Arslan A, Akbal E, Ergun S, Bayraktar R, Sagliker HS, Gunesacar R, Ozkaynak SP, Paylar N, Idris E. FP472STRIKING NOVEL MULTI- MISMUTATIONS ON GNAS1 , FGF23 AND FGFR3 GENES IN CKD WITH SECONDARY HYPERPARATHYROIDISM( SH ) . SAGLIKER SYNDROME( SS ) . SS IS A COMBINATION -COMPULSION OF BONE DISPLASIAS-HEREDITARY OSTEODYSTROPHIES AND SH AND CKD. Nephrol Dial Transplant 2019. [DOI: 10.1093/ndt/gfz106.fp472] [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: 11/13/2022] Open
Affiliation(s)
- YAHYA SAGLIKER
- SAGLIKER HYPERTENSION AND NEPHROLOGY UNIT, Adana, Turkey
| | | | | | | | | | | | | | | | | | - Nuray Paylar
- SAGLIKER HYPERTENSION AND NEPHROLOGY UNIT, Adana, Turkey
| | - Emir Idris
- Private Emir Dialysis Center, , Antakya, Turkey
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Yılmaz MB, Tunç E, Ilgaz NS, Öksüz H, Öztecik E, Özpak L, Öcal I, Pazarbaşı A, Demirhan O. Kanserli hücre hatları, pasaj sayısı arttıkça genomik organizasyonunu ve karyotipini değiştirir: sitogenetik bir çalışma. Cukurova Medical Journal 2018. [DOI: 10.17826/cumj.375325] [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: 11/07/2022] Open
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9
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Demirhan O, Tunç E, Altunbaşak Ş. 16. kromozomun q kolunda gözlenen kalıtımsal mozaisizm ve fenotipik etkileri. Cukurova Medical Journal 2018. [DOI: 10.17826/cumj.372388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Sagliker Y, Demirhan O, Arslan A, Sagliker HS, Bayraktar R, Dogan E, Sagliker Ozkaynak P, Paylar N, Akbal E, Akbal E, Ergun S. FP400MULTIPLE GNAS1, FGF23, FGFR3 GENES’ STRİKİNG MUTATIONS IN CKD PATIENTS WITH SH. NEW BONE DISPLASIA-HEREDİTARY OSTEODISTROPHY AND UGLIFYING HUMAN FACE APPEARANCES. SAGLIKER SYNDROME(SS ). Nephrol Dial Transplant 2018. [DOI: 10.1093/ndt/gfy104.fp400] [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: 11/14/2022] Open
Affiliation(s)
- Yahya Sagliker
- Hypertension and Nephrology, Sagliker Hypertension and Nephrology Unit, Adana, Turkey
| | | | - Ahmet Arslan
- Molecular Genetics, Gaziantep University, Adana, Turkey
| | | | | | - Ekrem Dogan
- Molecular Genetics, Sutcu Imam University, KahramanMaras, Turkey
| | | | - Nuray Paylar
- Hypetension, Sagliker Hypertension Unit, Adana, Turkey
| | - Eylül Akbal
- Molecular Genetics, Cukurova University, Adana, Turkey
| | - Eylül Akbal
- Molecular Genetics, Cukurova University, Adana, Turkey
| | - Sercan Ergun
- Molecular Genetics, Gaziantep University, Gaziantep, Turkey
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Tanrıverdi N, Demirhan O, Süleymanova D, Pazarbaşı A. Frequencies and distributions of sex chromosome abnormalities in females with the Turner phenotype: a long-term retrospective study in the southern region of Turkey. Turk J Med Sci 2017; 47:1447-1455. [PMID: 29151316 DOI: 10.3906/sag-1602-23] [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: The genetic background of Turner syndrome (TS) is highly variable. The correlation between genotype and phenotype is not yet well understood. The aim of this study was to describe the frequencies and distributions of Turner karyotypes and to discuss the phenotype/genotype relation in a very large group of individuals with TS. Materials and methods: The karyotype results of 248 female participants were evaluated retrospectively.Results: Of 248 females with the Turner phenotype, 14.5% had normal karyotypes and 85.5% had Turner karyotypes. About 72.2% of the abnormalities were numerical aberrations and 27.8% were structural aberrations. The most frequent karyotype was monosomy X, which was found in 135 females (63.7%), followed by 44 mosaics (21%), 40 isochromosomes of the long and short arms of chromosome X (19.1%), and 17 deletions of the short and long arms of chromosome X (8.0%). One case of Robertsonian translocation and one case of mosaic TS with marker chromosome were detected. Conclusion: This study shows the frequency and distribution of karyotypes in females with TS. There is great value to be gleaned from studies of females with TS in furthering our understanding of the atypical clinical features associated with TS. Studies involving genetic analyses will be necessary to examine gene expression profiles in girls with TS and identify potential candidate genes underlying the atypical clinical features associated with TS.
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Sagliker Y, Demirhan O, Arslan A, Sagliker HS, Akbal E, Ergün S, Bayraktar R, Gunesacar R, Sagliker Ozkaynak P, Paylar N. SP386MULTIPLE GNAS1, FGF23, FGFR3 GENES’ STRİKİNG MUTATIONS IN CKD PATIENTS WITH SH. NEW BONE DISPLASIA-HEREDİTARY OSTEODISTROPHY AND UGLIFYING HUMAN FACE APPEARANCES. SAGLIKER SYNDROME. Nephrol Dial Transplant 2017. [DOI: 10.1093/ndt/gfx147.sp386] [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: 11/12/2022] Open
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Demirhan O, Yilmaz MB, Tanriverdi N, Kocaturk-Sel S, Erkoc MA, Oksuz H. Identification of the short arm of the Y chromosome by cytogenetic and molecular analyses. CYTOL GENET+ 2017. [DOI: 10.3103/s009545271701011x] [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: 11/30/2022]
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Tunç E, Demirhan O, Sağliker Y, Yildiz İ, Paylar N, Güzel Aİ. Chromosomal findings and sequence analysis of target exons of calcium-sensingreceptor (CaSR) gene in patients with Sagliker syndrome. Turk J Med Sci 2017; 47:13-21. [PMID: 28263480 DOI: 10.3906/sag-1507-102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 01/28/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND/AIM Sagliker syndrome (SS) develops as a continuation of chronic kidney disease and secondary hyperparathyroidism conditions. It was thought that there are some genetic predisposition factors leading to SS. The calcium-sensing receptor (CaSR) is essential for calcium homeostasis in the body. We aimed to examine SS patients for chromosome aberrations (CAs) and CaSR gene abnormalities in exons 2 and 3. MATERIALS AND METHODS Twenty-three patients and 23 control subjects were admitted to Balcalı Hospital of the Medical Faculty of Çukurova University in Turkey between 2009 and 2011. Chromosomal analysis was performed according to standard cytogenetic methods. Full sequencing of exons 2 and 3 of the CaSR gene was done. RESULTS We found base alterations and deletions in exons 2 and 3 of the CaSR gene. We also found a statistically significant increase in the rate of CAs in patients compared to controls. In total we evaluated 639 metaphase plaques in 23 patients and found 241 CAs, of which 88% were structural and 12% were numerical abnormalities. CONCLUSION There is no relation between the etiology of SS and nucleotide alterations that we could find in exons 2 and 3 of the CaSR gene. Our data suggest that there may be a correlation between CAs and the progression of SS.
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Affiliation(s)
- Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Yahya Sağliker
- Department of Internal Medicine, Faculty of Medicine, Çukurova University, Adana, Turkey
| | | | - Nuray Paylar
- Department of Internal Medicine, Faculty of Medicine, Çukurova University, Adana, Turkey
| | - Ali İrfan Güzel
- Department of Medical Biology and Genetics, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize, Turkey
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Boga A, Emre M, Sertdemir Y, Uncu İ, Binokay S, Demirhan O. Effects of GSM-like radiofrequency irradiation during the oogenesis and spermiogenesis of Xenopus laevis. Ecotoxicol Environ Saf 2016; 129:137-144. [PMID: 27017260 DOI: 10.1016/j.ecoenv.2016.03.015] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/17/2016] [Accepted: 03/14/2016] [Indexed: 06/05/2023]
Abstract
We aimed to evaluate the effect of GSM-like radiofrequency electromagnetic radiation (RF-EMR) on the oogenesis, and spermiogenesis of Xenopus laevis, and so the development of the embryos obtained from Normal Females+Normal Males (i.e. "N(F)+N(M)"); Normal Females+RF-exposed Males (i.e. "N(F)+RF(M)"); RF-exposed Female+Normal Male (i.e. "RF(F)+N(M)"); and RF-exposed Female+RF-exposed Male (i.e. "RF(F)+RF(M)". Various, assessments were performed to determine potential teratogenic effects and mortality, body growth and behavior on first generation embryos. After exposing adults frogs of both sexes to 900MHz RF-EMR (at 1.0W/kg) for 8h a day over a 5-week period, the embryos' specific energy absorption rate (SAR) was calculated. In our present study (control group; 2.2% abnormal, 0.0% dead); with the N(F)+RF(M) combination, the long-term exposure of adult males to GSM-like radiation at 900MHz (RF: 2W) for 5 week/8h/day resulted in normal, abnormal and dead embryo ratios of 88.3%, 3.3% and 8.3%, respectively (p<0.001). In the RF(F)+N(M) combination, long-term exposure (5 week/8h/day) of adult females led to normal, abnormal and dead embryo ratios of 76.7%, 11.7%, and 11.7%, respectively (p<0.001). And in the RF(F)+RF(M) combination, long-term exposure (5 week/8h/day) of both adult males and females led to normal, abnormal and dead embryo ratios of 73.3%, 11.7%, and 15%, respectively (p<0.001). With the exception RF(F)+RF(M) group (p<0.001), no significant changes were observed on body growth (lengths) in comparison to the control group. It was also observed that the offspring of female adult Xenopus exposed to RF-EMR during oogenesis exhibited a more aggressive behavior compared to the control group. Cell phones radiation can thus lead to detrimental effects in humans' male and female reproductive cells.
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Affiliation(s)
- Ayper Boga
- Department of Medical Physiology, Cukurova University Medical Faculty, Adana, Turkey.
| | - Mustafa Emre
- Department of Biophysics, Cukurova University Medical Faculty, Adana, Turkey
| | - Yasar Sertdemir
- Department of Biostatistics, Cukurova University Medical Faculty, Adana, Turkey
| | - İbrahim Uncu
- Department of Biophysics, Cukurova University Medical Faculty, Adana, Turkey
| | - Secil Binokay
- Department of Medical Physiology, Cukurova University Medical Faculty, Adana, Turkey
| | - Osman Demirhan
- Department of Medical Biology, Cukurova University Medical Faculty, Adana, Turkey
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Demirhan O, Arslan A, Sagliker Y, Akbal E, Ergun S, Bayraktar R, Sagliker HS, Dogan E, Gunesacar R, Sagliker Ozkaynak P, Paylar N. MP386MULTIPLE GENE MUTATIONS IN GNAS1, FGF23 AND FGFR3 GENES IN CKD PATIENTS WITH SH SAGLIKER SYNDROME. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw190.43] [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: 11/12/2022] Open
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17
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Tunç E, Tanrıverdi N, Demirhan O, Süleymanova D, Çetinel N. Chromosomal analyses of 1510 couples who have experienced recurrent spontaneous abortions. Reprod Biomed Online 2016; 32:414-9. [PMID: 26874988 DOI: 10.1016/j.rbmo.2016.01.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [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: 08/12/2015] [Revised: 01/14/2016] [Accepted: 01/19/2016] [Indexed: 12/19/2022]
Abstract
In this retrospective study, karyotype results of 1510 couples with a history of recurrent spontaneous abortion were evaluated. The study was conducted at Balcalı Hospital in Adana region of Turkey. For all cases, peripheral blood lymphocytes were cultured for chromosome study using the standard method. Chromosome aberrations were detected in 62 couples (4.1% of all couples). At an individual level, chromosome aberrations were found in a total of 65 cases (41 females and 24 male cases), with structural chromosomal aberrations in 58 cases including balanced translocations in 30 cases, Robertsonian translocations in 12 cases, deletions in seven cases, inversions in nine cases and numerical chromosome aberrations in seven cases. The results of the study indicated that structural aberrations, particularly translocations, were the most common type of aberration observed among couples who had experienced recurrent spontaneous abortions and that these couples might benefit from cytogenetic analyses.
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Affiliation(s)
- Erdal Tunç
- Medical Biology and Genetics Department, Çukurova University, 01330, Adana, Turkey
| | - Nilgün Tanrıverdi
- Medical Biology and Genetics Department, Çukurova University, 01330, Adana, Turkey
| | - Osman Demirhan
- Medical Biology and Genetics Department, Çukurova University, 01330, Adana, Turkey.
| | - Dilara Süleymanova
- Medical Biology and Genetics Department, Çukurova University, 01330, Adana, Turkey
| | - Nesrin Çetinel
- Medical Biology and Genetics Department, Çukurova University, 01330, Adana, Turkey
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Demirhan O, Tanriverdi N, Yilmaz MB, Kocaturk-Sel S, Inandiklioglu N, Luleyap U, Akbal E, Comertpay G, Tufan T, Dur O. Report of a new case with pentasomy X and novel clinical findings. Balkan J Med Genet 2015; 18:85-92. [PMID: 26929910 PMCID: PMC4768830 DOI: 10.1515/bjmg-2015-0010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Pentasomy X is an extremely rare sex chromosome abnormality, a condition that only affects females, in which three more X chromosomes are added to the normally present two chromosomes in females. We investigated the novel clinical findings in a 1-year-old female baby with pentasomy X, and determined the parental origins of the X chromosomes. Our case had thenar atrophy, postnatal growth deficiency, developmental delay, mongoloid slant, microcephaly, ear anomalies, micrognathia and congenital heart disease. A conventional cytogenetic technique was applied for the diagnosis of the polysomy X, and quantitative fluorescent polymerase chain reaction (QF-PCR) using 11 inherited short tandem repeat (STR) alleles specific to the chromosome X for the determination of parental origin of X chromosomes. A cytogenetic evaluation revealed that the karyotype of the infant was 49,XXXXX. Comparison of the infant's features with previously reported cases indicated a clinically recognizable specific pattern of malformations referred to as the pentasomy X syndrome. However, to the best of our know-ledge, this is the first report of thenar atrophy in a patient with 49,XXXXX. The molecular analysis suggested that four X chromosomes of the infant originated from the mother as a result of the non disjunction events in meiosis I and meiosis II. We here state that the clinical manifestations seen in our case were consistent with those described previously in patients with pentasomy X. The degree of early hypotonia constitutes an important early prognostic feature in this syndrome. The pathogenesis of pentasomy X is not clear at present, but it is thought to be caused by successive maternal non disjunctions.
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Affiliation(s)
- O Demirhan
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - N Tanriverdi
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - M B Yilmaz
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - S Kocaturk-Sel
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - N Inandiklioglu
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - U Luleyap
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - E Akbal
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - G Comertpay
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - T Tufan
- Department of Medical Biology and Genetics, Çukurova University, Faculty of Medicine, Adana, Turkey
| | - O Dur
- Department of Pediatrics, Çukurova University, Faculty of Medicine, Adana, Turkey
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Demirhan O, Arslan A, Sagliker Y, Akbal E, Ergun S, Bayraktar R, Sagliker HS, Dogan E, Gunesacar R, Ozkaynak PS. Gene mutations in chronic kidney disease patients with secondary hyperparathyroidism and Sagliker syndrome. J Ren Nutr 2015; 25:176-86. [PMID: 25701941 DOI: 10.1053/j.jrn.2014.12.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/22/2014] [Accepted: 12/22/2014] [Indexed: 12/26/2022] Open
Abstract
Sagliker syndrome (SS) develops particularly before puberty while chronic kidney disease (CKD) reaches stage 3 with overt secondary hyperparathyroidism. We conducted screening for mutations in all the 13 exons of GNAS1 gene, all 3 exons of FGF23, and all 18 exons in FGFR3 genes in 23 patients. In 73.9% (17 of 23) patients, 17 genetic abnormalities in GNAS1 were detected. Seven (58.3%) of 12 nucleotide alterations comprised novel missense mutations and 3 nonsense. Mismutations were in different manner. There were also 6 heterozygous transversion polymorphisms in exons. Six were introngenic mutations (introns 65626, 70387, 70817). We found 10 mutations with different manner in FGF23 gene. Two were defined previously but remaining 8 were novel mutations. Three were in intronic region near exon 2. We sequenced all exons and intronic regions near exon-exon junction regions of FGFR3 gene. We found 22 mutations with different manner. Six were defined previously and remaining 16 were novel mutations. Eight of them were in intronic region near exon 11 and the last 2 were in noncoding exonic region of exons. One was in the exon-exon junction region between exon 11 and 12, therefore this mutation might be preventing splicing of this intron. Because the incidence of CKD late stage 3 is around 8% but the incidence of SS is around 0.5% in CKD, these gene mismutations might be responsible for bone deformities such as McCune-Albright syndrome and achondroplasias. Although our patients were not resembling any of them, they could be in between, and SS might be a combination-compulsion of bone dysplasias-hereditary osteodystrophies and CKD.
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Affiliation(s)
| | | | - Yahya Sagliker
- Sagliker Hypertension and Nephrology Unit, Adana, Turkey.
| | | | | | | | | | - Ekrem Dogan
- Sutcu Imam University, Kahramanmaras, Turkey
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Ozbek C, Sever K, Demirhan O, Mansuroglu D, Kurtoglu N, Ugurlucan M, Sevmis S, Karakayali H. MID TERM RESULTS AFTER OPEN HEART SURGERY IN HEMODIALYSIS PATIENTS AWAITING KIDNEY TRANSPLANT: DOES CARDIOVASCULAR SURGICAL INTERVENTION PRIOR TO TRANSPLANTATION PROLONG SURVIVAL? Georgian Med News 2015:42-51. [PMID: 26719549] [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: 06/05/2023]
Abstract
The aim of this study was to compare the mid and long term postoperative outcomes between the hemodialysis-dependent patients awaiting kidney transplantat who underwent open heart surgery in our department during the last five years, and those who did not receive a renal transplant, to determine the predictors of mortality, and assess the possible contribution of post heart surgery kidney transplantation to survival. The patients were separated into two groups: those who underwent a transplantation after open heart surgery were included in the Tp+ group, and those who did not in the Tp- group Between June 2008 and December 2012, 127 dialysis dependent patients awaiting kidney transplant and who underwent open heart surgery were separated into two groups. Those who underwent transplantation after open heart surgery were determined as Tp+ (n=33), and those who did not as Tp- (n=94). Both groups were compared with respect to preoperative paramaters including age, sex, diabetes mellitus (DM), hypertension (HT), hyperlipidemia (HL), obesity, smoking, chronic obstructive pulmonary disease (COPD), peripheral vascular disease (PVD), left ventricle ejection fraction (EF), Euroscore; operative parameters including cross clamp time, perfusion time, number of grafts, use of internal mammary artery (IMA); postoperative parameters including revision, blood transfusion, ventilation time, use of inotropic agents, length of stay in the intensive care unit and hospital, and follow up findings. Problems encountered during follow up were recorded. Predictors of mortality were determined and the survival was calculated. Among the preoperative parameters, when compared with the Tp- group, the Tp+ group had significantly lower values in mean age, presence of DM, obesity, PVD, and Euroscore levels, and higher EF values. Assessment of postoperative values showed that blood transfusion requirement and length of hospital stay were significantly lower in the Tp+ group compared to the Tp- group, whereas the length of follow up was significantly higher in the Tp+ group. The use of inotropic agents was significantly higher in the Tp- group. A logistic regression analysis was made to determine the factors affecting mortality. Revision (p=0.013), blood transfusion (p=0.017), ventilation time (p=0.019), and length of stay in the intensive care unit (p=0.009) were found as predictors of mortality. Survival rates at years 1, 2 and 3 were 86.1%, 81%, 77.5% in the Tp- group, and 96.0%, 96.3%, 90.4% in the Tp+ group. Median survival rate was 41.35±2.02 in the Tp- group, and 49.64±1.59 in the Tp+ group which was significantly higher compared to the Tp- group (p=0.048). Chronic renal failure is among the perioperative risk factors for patients undergoing open heart surgery. Transplantation is still an important health issue due to insufficiency of available transplant organs. Patients with chronic renal failure are well known to have higher risks for coronary artery disease. A radical solution of the cardiovascular system problems prior to kidney transplantation seems to have a significant contribution to the post transplant survival.
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Affiliation(s)
- C Ozbek
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - K Sever
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - O Demirhan
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - D Mansuroglu
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - N Kurtoglu
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - M Ugurlucan
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - S Sevmis
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
| | - H Karakayali
- Gaziosmanpasa Hospital, Cardiovascular Surgery Department; Istanbul Bilim University, Thoracic Surgery Department; Gaziosmanpasa Hospital, Cardiology Department; Istanbul University, Medical Faculty, Department of Cardiovascular Surgery; Gaziosmanpasa Hospital, Transplantation Department, Istanbul, Turkey
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Korkmaz DT, Demirhan O, Abat D, Demirberk B, Tunç E, Kuleci S. Microchimeric Cells, Sex Chromosome Aneuploidies and Cancer. Pathol Oncol Res 2015; 21:1157-65. [PMID: 26003190 DOI: 10.1007/s12253-015-9934-7] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 03/18/2015] [Indexed: 02/04/2023]
Abstract
The phenomenon of feta-maternal microchimerisms inspires numerous questions. Many questions remain to be answered regarding this new avenue of genetics. The X and Y chromosomes have been associated with malignancy in different types of human tumors. We aimed to investigate the numerical aberrations of chromosomes X and Y in lung cancer (LC) and bladder cancer (BC) and review recent evidence for possible roles of microchimeric cells (McCs) in these cancers. We carried out cytogenetic analysis of the tumor and blood sampling in 52 cases of people with BC and LC, and also with 30 healthy people. A total of 48 (92.3 %) of the patients revealed sex chromosome aneuploidies (SCAs). A total SCAs was found in 9.8 % of 2282 cells that were analyzed as one or more cells in each case. The 68 and 95 SCAs were found in the 1952 (8.4 %) cells in peripheral blood, and 41 and 19 SCAs in the 330 (18.2 %) cells in the tumoral tissues respectively. There was a significant difference in the frequencies of SCAs between the patients and the control groups determined by the Fischer's Exact Test (p < 0.0001). The frequencies of SCAs were higher in the tumoral tissues than in the blood (p < 0.0001). There was a significant difference in the frequencies of SCAs between the tumor and blood tissues, and this was higher in the tumor tissue (p < 0.0001). In general, 78.9 % (41) of the 52 patients with LC and BC had X and Y chromosome monosomies. Largely a Y chromosome loss was present in 77.8 % of the men, and the 47, XXY karyotype was found in 33.3 % of them. The second most common SCA was monosomy X, and was found in 71.4 % of the women. McCs were observed in 26.9 % of the 52 patients, and the frequencies of McCs were higher in the blood than in the tissues (p < 0.0001). XY cells were identified in the lung and bladder tissues of the women who had been pregnant with boys, but not in those who had not. There was a significant difference in the frequencies of McCs between the LC and BC patients (p < 0.0005). We speculate that the microchimerism could have a general beneficial role in cancer, in which some sites may not be evident because of an allogeneic maternal immune reaction that hastens cancer development. A further understanding of McCs may help in anticipating its implications in cancer. Our results may suggest that SCAs may be contributing factors in the development of LC and BC, and aneuploidies of X and Y chromosomes play a role in the pathogenesis of cancers.
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Demirhan O, Sagliker Y, Akbal E, Paylar N, Sagliker HS, Sagliker Ozkaynak P, Yildiz I, Inandıklıoglu N, Tunc E, Balal M, Emir I, Esentürk M, Eyupoglu K, Dogramaci E. FP430WHOLE 13 EXONS OF GNAS1 GENE IN SAGLIKER SYNDROME( SS ).COMBINATION-COMPULSION OF BONE DYSPLASIAS-HEREDITARY OSTEODISTROPHIES(BD),CHRONIC KIDNEY DISEASES ( CKD ) AND SECONDARY HYPERPARATHYROIDISM( SH ). Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv177.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Demirhan O, Arslan A, Sagliker Y, Akbal E, Ergun S, Bayraktar R, Sagliker HS, Dogan E, Gunesacar R, Sagliker Ozkaynak P, Paylar N. SaO028NOVEL STRIKING MISMUTATIONS ON GNAS1, FGF23 AND FGFR3 GENES IN CKD WITH SECONDARY HYPERPARATHYROIDISM (SH) AND SAGLIKER SYNDROME (SS).SS IS A COMBINATION-COMPULSION OF BONE DISPLASIAS-HEREDITARY OSTEODYSTROPHIES AND CKD. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv150.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Boga A, Emre M, Sertdemir Y, Akillioglu K, Binokay S, Demirhan O. The effect of 900 and 1800 MHz GSM-like radiofrequency irradiation and nicotine sulfate administration on the embryonic development of Xenopus laevis. Ecotoxicol Environ Saf 2015; 113:378-390. [PMID: 25531835 DOI: 10.1016/j.ecoenv.2014.12.020] [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] [Received: 07/10/2014] [Revised: 12/03/2014] [Accepted: 12/08/2014] [Indexed: 06/04/2023]
Abstract
The aim of this study was to investigate the effects of GSM-like radiofrequency electromagnetic radiation (RF EMR) and nicotine sulfate (NS) exposure on Xenopus embryonic development.The developmental effects of GSM-like RF-EMR (900-1800 MHz, at a SAR value of 1W/kg and NS on Xenopus laevis embryos were investigated). Following the application of radiofrequency radiation and/or NS administration, the embryos were closely examined in order to determine their possible teratogenic effects. Xenopus frogs obtained from the Department of Physiology of the Cukurova University, in accordance described by the Standard Guide of the American Society for Testing and Materials (ASTM). Following the exposure of Xenopus embryos to RF-EMR at 900 and 1800 MHz (1.0W/kg) for 4, 6 and 8h; the whole body specific energy absorption rate (SAR) of the embryos was calculated. With the exception of irradiation at 1800 MHz no dramatic developmental anomalies were observed in the Xenopus embryos in association with RF-EMR applications. Combined RF-EMR and NS applications resulted in dramatic abnormalities and death among the Xenopus embryos. The study results indicated that GSM-like RF-EMR (e.g. radiation from cell phones) was not as harmful to Xenopus embryos as might have been expected. However, the combined effects of GSM-like RF-EMR and NS on Xenopus embryos were more severe than the effect of RF-EMR or NS alone. In conclusion, the study results appear to suggest that the combined use of nicotine and cell phones might result in more pronounced detrimental effects on the health of smokers.
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Affiliation(s)
- Ayper Boga
- Department of Physiology, Cukurova University Medical Faculty, Adana, Turkey.
| | - Mustafa Emre
- Department of Biophysics, Cukurova University Medical Faculty, Adana, Turkey
| | - Yasar Sertdemir
- Department of Biostatistics, Cukurova University Medical Faculty, Adana, Turkey
| | - Kubra Akillioglu
- Department of Physiology, Cukurova University Medical Faculty, Adana, Turkey
| | - Secil Binokay
- Department of Physiology, Cukurova University Medical Faculty, Adana, Turkey
| | - Osman Demirhan
- Department of Medical Biology, Cukurova University Medical Faculty, Adana, Turkey
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Demirhan O, Tanrıverdi N, Tunç E, Inandıklıoğlu N, Süleymanova D. Frequency and types of chromosomal abnormalities in Turkish women with amenorrhea. J Pediatr Adolesc Gynecol 2014; 27:274-7. [PMID: 25023981 DOI: 10.1016/j.jpag.2013.11.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 11/18/2013] [Accepted: 11/19/2013] [Indexed: 12/01/2022]
Abstract
STUDY OBJECTIVE To estimate the frequency and the type of chromosomal abnormalities (CA) in patients with primary (PA) and secondary amenorrhea (SA). DESIGN This retrospective study was comprised of patients had been referred to our laboratory between 1990 to 2008 and designed as original article. SETTING Medical Faculty of Cukurova University in Turkey. PARTICIPANTS Chromosomal analysis was carried out on 393 patients with PA and SA that were referred to Cytogenetic laboratory of Medical Biology and Genetic Department, Faculty of Medicine, Çukurova University. INTERVENTIONS Lymphocyte culturing depended karyotyping. MAIN OUTCOME MEASURES Standard lymphocyte culturing procedure and karyotyping was performed to all samples. RESULTS PA and SA were identified in 393 patients. The karyotype was normal in 337 cases (85.8%) and abnormal in 56 (14.2%) patients. CAs were found in 54 (13.7%) and 2 (0.5%) of women with PA and SA, respectively. Females carrying rearrangements between autosomal and sex chromosomes were detected in 2% (8/393). The numerical abnormalities of the X chromosome were detected in 39.3% (22/56) (monosomy and mosaic). Structural abnormalities of the X and the other chromosomes were detected in 25.5% (13 of 56). Structural mosaicism of X chromosome was found in 5.4% (3 of 56). Male karyotype (46, XY) was found in 33.9% (19/56). The most frequently detected abnormality were X chromosome monosomies or mosaics. CONCLUSIONS Our study revealed that some causes of amenorrhea could be due to CAs. Therefore, cytogenetic study should be important test in the evaluation of patients with PA or SA. The most common abnormality seen is 45,X karyotype (monosomy X/Turner Syndrome) and its variants.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey.
| | - Nilgün Tanrıverdi
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
| | - Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
| | - Nihal Inandıklıoğlu
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
| | - Dilara Süleymanova
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Balcali-Adana, Turkey
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Inandiklioglu N, Demirhan O, Bayram I, Kasap M, Yilmaz S, Tanyeli A. PP-046 THE INVESTIGATION OF VEGF-A, MMP-2, MMP-9, TIMP-1, TIMP-2 GENES EXPRESSION ALTERATIONS AND METHYLATION LEVELS IN CHILDREN WITH ACUTE LYMPHOBLASTIC LEUKEMIA. Leuk Res 2014. [DOI: 10.1016/s0145-2126(14)70100-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hakverdi S, Demirhan O, Tunc E, Inandiklioglu N, Uslu IN, Gungoren A, Erdem D, Hakverdi AU. Chromosome imbalances and alterations in the p53 gene in uterine myomas from the same family members: familial leiomyomatosis in Turkey. Asian Pac J Cancer Prev 2014; 14:651-8. [PMID: 23621213 DOI: 10.7314/apjcp.2013.14.2.651] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Uterine leiomyomas (UL) are extremely common neoplasms in women of reproductive age, and are associated with a variety of characteristic choromosomal aberrations (CAs). The p53 gene has been reported to play a crucial role in suppressing the growth of a variety of cancer cells. Therefore, the present study investigated the effects of CAs and the p53 gene on ULs. We performed cytogenetic analysis by G-banding in 10 cases undergoing myomectomy or hysterectomy. Fluorescence in situ hybridization (FISH) with a p53 gene probe was also used on interphase nuclei to screen for deletions. In patients, CAs were found in 23.4% of 500 cells analysed, significantly more frequent than in the control group (p<0.001). In the patients, 76% of the abnormalities were structural aberrations (deletions, translocations and breaks), and only 24% were numerical. Deletions were the most common structural aberration observed in CAs. Among these CAs, specific changes in five loci 1q11, 1q42, 2p23, 5q31 and Xp22 have been found in our patients and these changes were not reported previously in UL. The chromosome breaks were more frequent in cases, from high to low, 1, 2, 6, 9, 3, 5, 10 and 12. Chromosome 22, X, 3, 17 and 18 aneuploidy was observed to be the most frequent among all numerical aberrations. We observed a low frequency of p53 losses (2-11%) in our cases. The increased incidence of autosomal deletions, translocations, chromatid breaks and aneuploidy, could contribute to the progression of the disease along with other chromosomal alterations.
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Affiliation(s)
- Sibel Hakverdi
- Department of Pathologi, Tayfur Ata Sokmen Faculty of Medicine, Mustafa Kemal University, Hatay, Turkey
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Tunç E, Demirhan O, Pazarbaşı A, Taştemir D, Güzel Aİ, Kasap M, Özgünen FT, Yılmaz B, Kocatürk-Sel S. Çukurova Populasyonunda Gebelik Zamanı ve Maternal Yaşın Fetal Cinsiyet Oranı Üzerine Olan Etkisi. Cukurova Medical Journal 2014. [DOI: 10.17826/cutf.53278] [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: 11/07/2022] Open
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Abat D, Demirhan O, Inandiklioglu N, Tunc E, Erdogan S, Tastemir D, Uslu IN, Tansug Z. Genetic alterations of chromosomes, p53 and p16 genes in low- and high-grade bladder cancer. Oncol Lett 2014; 8:25-32. [PMID: 24959214 PMCID: PMC4063627 DOI: 10.3892/ol.2014.2108] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 04/26/2013] [Accepted: 03/12/2014] [Indexed: 12/31/2022] Open
Abstract
A majority of patients with bladder cancer present with superficial disease and subsequently, some patients show progression to muscle invasive or metastatic disease. Bladder cancer has a complex genetic process and identification of the genetic alterations which occur during progression may lead to the understanding of the nature of the disease and provide the possibility of early treatment. The aim of the present study was to compare the structural and numerical chromosomal differences and changes in the p16 and p53 genes between low-grade (LG) and high-grade (HG) bladder cancer (BC) using cytogenetic and molecular cytogenetic methods. Between March 2009 and March 2010, cytogenetic analyses were carried out on tumor and blood samples in 34 patients with transitional cell type BC, and on blood samples of 34 healthy patients as a control group. Fluorescence in situ hybridization probes for the p16 and p53 genes were also used to screen the alterations in these genes in 32 patients with BC. The patients were divided into two groups (LG and HG) and the findings were compared. A total of 11 (32.3%) patients exhibited LGBC, 22 (64.7%) exhibited HGBC and one (3%) patient exhibited carcinoma in situ. There were no differences between the LGBC and HGBC groups according to the number of chromosomal aberrations (P=0.714); however, differences between alterations of the p16 and p53 genes were significant (P=0.002 and P=0.039). Almost all structural abnormalities were found to be located to the 1q21, 1q32, 3p21 and 5q31 regions in patients with HG tumors. In conclusion, the p16 and p53 genes were altered more prominently in patients with HG tumors compared with LG tumors. The structural abnormalities in the 1q21, 1q32, 3p21 and 5q31 regions were observed more frequently in patients with HG tumors. These regions may play significant roles in the progression of BC, but further studies are required to find candidate genes for a panel of BC.
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Affiliation(s)
- Deniz Abat
- Department of Urology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Osman Demirhan
- Department of Medical Biology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Nihal Inandiklioglu
- Department of Medical Biology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Erdal Tunc
- Department of Medical Biology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Seyda Erdogan
- Department of Pathology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Deniz Tastemir
- Vocational School of Health Services, Adıyaman University, 02040 Adıyaman, Turkey
| | - Inayet Nur Uslu
- Department of Medical Biology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
| | - Zuhtu Tansug
- Department of Urology, Faculty of Medicine, Çukurova University, 01330 Adana, Turkey
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Diaz-Tocados JM, Herencia C, Martinez-Moreno JM, Montes De Oca A, Rodriguez-Ortiz ME, Gundlach K, Buchel J, Steppan S, Passlick-Deetjen J, Rodriguez M, Almaden Y, Munoz-Castaneda JR, Nakano C, Hamano T, Fujii N, Matusi I, Mikami S, Tomida K, Mori D, Kusunoki Y, Shimomura A, Obi Y, Hayashi T, Rakugi H, Isaka Y, Tsubakihara Y, Jorgensen HS, Winther S, Hauge EM, Rejnmark L, Botker HE, Bottcher M, Svensson M, Ivarsen P, Sagliker Y, Demirhan O, Yildiz I, Paylar N, Inandiklioglu N, Akbal E, Tunc E, Tartaglione L, Rotondi S, Pasquali M, Muci ML, Mandanici G, Leonangeli C, Sotir N, Sales S, Mazzaferro S, Gigante M, Cafiero C, Brunetti G, Simone S, Grano M, Colucci S, Ranieri E, Pertosa G, Gesualdo L, Evenepoel P, Goffin E, Meijers B, Kanaan N, Bammens B, Coche E, Claes K, Jadoul M, Louvet L, Metzinger L, Buchel J, Steppan S, Massy ZA, Prasad B, St.Onge JR, Tentori F, Zepel L, Comment L, Akiba T, Bommer J, Fukagawa M, Goodkin DA, Jacobson SH, Robinson BM, Port FK, Evenepoel P, Viaene L, Poesen R, Bammens B, Meijers B, Naesens M, Sprangers B, Kuypers D, Claes K, Tominaga Y, Hiramitsu T, Yamamoto T, Tsujita M, Makowka A, G Yda M, Rutkowska-Majewska E, Nowicki MP, Takeshima A, Ogata H, Yamamoto M, Ito H, Kinugasa E, Kadokura Y, Dimkovic N, Dellanna F, Spasovski G, Wanner C, Locatelli F, Troib A, Assadi MH, Landau D, Rabkin R, Segev Y, Ciceri P, Elli F, Cappelletti L, Tosi D, Savi F, Bulfamante G, Cozzolino M, Barreto FC, De Oliveira RB, Benchitrit J, Louvet L, Rezg R, Poirot S, Jorgetti V, Drueke TB, Riser BL, Massy ZA, Pasquali M, Tartaglione L, Rotondi S, Muci ML, Mandanici G, Leonangeli C, Massimetti C, Utzeri G, Biondi B, Mazzaferro S, Verkaik M, Eringa EC, Musters RJ, Pulskens WP, Vervloet MG, Ter Wee PM, Schiller A, Onofriescu M, Apetrii M, Schiller O, Bob F, Timar R, Mihaescu A, Florea L, Mititiuc I, Veisa G, Covic A, Krause R, Kaase H, Stange R, Hopfenmuller W, Chen TC, Holick MF, Kawasaki T, Ando R, Maeda Y, Arai Y, Sato H, Iimori S, Okado T, Rai T, Uchida S, Sasaki S, An WS, Jeong E, Son SH, Kim SE, Son YK, Baxmann AC, Menon VB, Moreira SR, Medina-Pestana J, Carvalho AB, Heilberg IP, Bergman A, Qureshi AR, Haarhaus MH, Lindholm B, Barany P, Heimburger O, Stenvinkel P, Anderstam B, Wilson RJ, Copley JB, Keith MS, Preston P, Santos RSS, Moyses RMA, Silva BC, Jorgetti V, Coelho FMS, Elias RM, Wanderley RA, Ferreira LQO, Sena TCM, Valerio TR, Gueiros JEB, Gueiros APS, Awata R, Goto S, Nakai K, Fujii H, Nishi S, Sagliker Y, Dingil M, Paylar N, Kapur S, Kim B, Lee DY, Yang S, Kim HW, Moon KH, Palmer S, Teixeira-Pinto A, Saglimbene V, Macaskill P, Craig J, Strippoli G, Marks A, Nguyen H, Fluck N, Prescott G, Robertson L, Black C. CKD BONE DISEASE. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Demirhan O, Cekin N, Taştemir D, Tunç E, Güzel Aİ, Meral D, Demirbek B. Are there fetal stem cells in the maternal brain? Neural Regen Res 2013; 8:593-8. [PMID: 25206703 PMCID: PMC4145981 DOI: 10.3969/j.issn.1673-5374.2013.07.002] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Accepted: 01/23/2013] [Indexed: 11/18/2022] Open
Abstract
Fetal cells can enter maternal blood during pregnancy but whether they can also cross the blood-brain barrier to enter the maternal brain remains poorly understood. Previous results suggest that fetal cells are summoned to repair damage to the mother's brain. If this is confirmed, it would open up new and safer avenues of treatment for brain damage caused by strokes and neural diseases. In this study, we aimed to investigate whether a baby's stem cells can enter the maternal brain during pregnancy. Deceased patients who had at least one male offspring and no history of abortion and blood transfusion were included in this study. DNA was extracted from brain tissue samples of deceased women using standard phenol-chloroform extraction and ethanol precipitation methods. Genomic DNA was screened by quantitative fluorescent-polymerase chain reaction amplification together with short tandem repeat markers specific to the Y chromosome, and 13, 18, 21 and X. Any foreign DNA residues that could be used to interpret the presence of fetal stem cells in the maternal brain were monitored. Results indicated that fetal stem cells can not cross the blood-brain barrier to enter the maternal brain.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - Necmi Cekin
- Department of Forensic Medicine, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - Deniz Taştemir
- Vocational School of Health Services, Adiyaman University, Adiyaman, Turkey
| | - Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Çukurova, Adana, Turkey
| | - Ali İrfan Güzel
- Department of Medical Biology and Genetics, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Demet Meral
- Department of Forensic Medicine, Faculty of Medicine, University of Çukurova, Adana, Turkey
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Hanta I, Tastemir-Korkmaz D, Demirhan O, Hanta D, Kuleci S, Seydaoglu G. Association of the Nramp1 gene polymorphisms and clinical forms in patients with tuberculosis. ACTA ACUST UNITED AC 2013; 113:657-60. [PMID: 23137204 DOI: 10.4149/bll_2012_148] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Recent studies have reported that Nramp1 polymorphisms might have an important role in the development of tuberculosis in various populations. In this study, we aimed to determine Nramp1 polymorphisms in our patients with tuberculosis population. METHODS We enrolled 127 patients with active tuberculosis and 116 healthy adults with similar age and gender. Peripheral blood samples were taken for determining the Nramp1 polymorphisms. By using Polymerase Chain Reaction (PCR) - Restriction Fragment Length Polymorphisms (RFLP) technique, we evaluated the polymorphisms of Nramp1 at the regions of D543N and INT4. RESULTS We found that the Nramp1 polymorphisms at the region of D543N (OR: 0.44, 95%CI: 0.09-2.06 for GA allele) were not a risk factor for tuberculosis. Furthermore, we could not able to detect Nramp1 polymorphism at the regions of INT4 (OR: 0.97, 95%CI: 0.55-1.72 for GC allele and OR: 0.90, 95%CI: 0.21-3.77 for CC allele). CONCLUSION The findings of the present study do not support the hypothesis that Nramp1 at the regions of D543 and INT4 might play a role in influencing the growth of bacilli and progression of cavitary tuberculosis rather than susceptibility to M. tuberculosis infection. Future studies are needed to elucidate the role of Nramp1 variants in the pathogenesis of tuberculosis (Tab. 3, Ref. 29).
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Affiliation(s)
- I Hanta
- Department of Chest Diseases, Faculty of Medicine, Cukurova University, Adana, Turkey.
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Inandiklioglu N, Yilmaz S, Demirhan O, Erdogan S, Tanyeli A. Chromosome Imbalances and Alterations of AURKA and MYCN Genes in Children with Neuroblastoma. Asian Pac J Cancer Prev 2012. [DOI: 10.7314/apjcp.2012.13.11.5391] [Citation(s) in RCA: 7] [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: 11/10/2022] Open
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Yildiz I, Sagliker Y, Demirhan O, Tunc E, Inandiklioglu N, Tasdemir D, Acharya V, Zhang L, Golea O, Sabry A, Ookalkar DS, Capusa C, Radulescu D, Garneata L, Mircescu G, Ben Maiz H, Chen CH, Prado Rome J, Benzegoutta M, Paylar N, Eyuboglu K, Karatepe E, Esenturk M, Yavascan O, Grzegorzevska A, Shilo V, Mazdeh MM, Francesco RC, Gouda Z, Adam SM, Emir I, Ocal F, Usta E, Kiralp N, Sagliker C, Ozkaynak PS, Sagliker HS, Bassuoni M, Sekin O. International evaluation of unrecognizably uglifying human faces in late and severe secondary hyperparathyroidism in chronic kidney disease. Sagliker syndrome. A unique catastrophic entity, cytogenetic studies for chromosomal abnormalities, calcium-sensing receptor gene and GNAS1 mutations. Striking and promising missense mutations on the GNAS1 gene exons 1, 4, 10, 4. J Ren Nutr 2012; 22:157-61. [PMID: 22200434 DOI: 10.1053/j.jrn.2011.10.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 10/13/2011] [Indexed: 12/21/2022] Open
Abstract
Hypotheses explaining pathogenesis of secondary hyperparathyroidism (SH) in late and severe CKD as a unique entity called Sagliker syndrome (SS) are still unclear. This international study contains 60 patients from Turkey, India, Malaysia, China, Romania, Egypt, Tunisia, Taiwan, Mexico, Algeria, Poland, Russia, and Iran. We examined patients and first degree relatives for cytogenetic chromosomal abnormalities, calcium sensing receptor (Ca SR) genes in exons 2 and 3 abnormalities and GNAS1 genes mutations in exons 1, 4, 5, 7, 10, 13. Our syndrome could be a new syndrome in between SH, CKD, and hereditary bone dystrophies. We could not find chromosomal abnormalities in cytogenetics and on Ca SR gene exons 2 and 3. Interestingly, we did find promising missense mutations on the GNAS1 gene exons 1, 4, 10, 4. We finally thought that those catastrophic bone diseases were severe SH and its late treatments due to monetary deficiencies and iatrogenic mistreatments not started as early as possible. This was a sine qua non humanity task. Those brand new striking GNAS1 genes missense mutations have to be considered from now on for the genesis of SS.
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Loh ZY, Yap CW, Anantharaman V, How P, Hirata M, Aizawa K, Yogo K, Tashiro Y, Takeda S, Endo K, Fukagawa M, Serizawa KI, Fujii H, Fujii H, Kono K, Nakai K, Goto S, Hirata M, Shinohara M, Kitazawa R, Kitazawa S, Fukagawa M, Nishi S, Oruc A, Korkmaz S, Bal O, Yilmaztepe Oral A, Ersoy A, Gullulu M, Ketteler M, Martin K, Amdahl M, Cozzolino M, Goldsmith D, Sharma A, Khan S, Ketteler M, Martin K, Amdahl M, Cozzolino M, Goldsmith D, Sharma A, Khan S, Chitalia N, Afzali B, Edozie F, Manghat P, Wierzbicki A, Hampson G, Goldsmith D, Corradini M, Iannuzzella F, Manenti L, Ciarrocchi A, Albertazzi L, Somenzi D, Pasquali S, Calabria Baxmann A, Barcellos Menon V, Froeder L, Medina-Pestana JO, Barbosa Carvalho A, Pfeferman Heilberg I, Sola L, De Souza N, Flores J, Perico N, Yuste C, Garcia DE Vinuesa MS, Luno J, Goicoechea MA, Barraca D, Panizo N, Quiroga B, Kim SM, Kwon SK, Kim HY, Cournoyer S, Bell R, Berbiche D, Menard L, Viaene L, Evenepoel P, Meijers B, Overbergh L, Mathieu C, Pasquali M, Rotondi S, Conte C, Pirro G, Mazzaferro S, Frasheri A, Marangella M, Tartaglione L, Park JS, Koo TY, Kim GH, Kang CM, Lee CH, Hiemstra TF, Casian A, Boraks P, Jayne D, Schoenmakers I, Schmiedeke B, Niemann M, Schmiedeke D, Davydenko I, Emmert A, Pilz S, Obermayer-Pietsch B, Weidemann F, Breunig F, Wanner C, Drechsler C, Shiizaki K, Ito C, Onishi A, Nakazawa E, Ogura M, Kusano E, Ermolenko V, Mikhaylova N, Mikhaylova N, Vartanjan K, Levchuk D, Dobrina E, Capusa C, Stancu S, Maria D, Vladu I, Barsan L, Garneata L, Mota E, Mircescu G, Capusa C, Stancu S, Barsan L, Ilyes A, Dorobantu N, Petrescu L, Mircescu G, Martinez-Gallardo R, Martinez-Gallardo R, Ferreira F, Garcia-Pino G, Luna E, Caravaca F, De Jager DJ, Grootendorst DC, Postmus I, De Goeij MCM, Boeschoten EW, Sijpkens YWJ, Dekker FW, Halbesma N, Wuthrich RP, Covic A, Gaillard S, Rakov V, Louvet L, Buchel J, Steppan S, Passlick-Deetjen J, Massy ZA, Akalin N, Akalin N, Altiparmak MR, Trabulus S, Yalin AS, Seyahi N, Ataman R, Serdengecti K, Donate-Correa J, Martinez-Sanz R, Muros-de-Fuentes M, Garcia J, Garcia P, Cazana V, Mora-Fernandez C, Navarro-Gonzalez JF, Chitalia N, Afzali B, Edozie F, Manghat P, Wierzbicki A, Hampson G, Goldsmith D, Berutti S, Marranca D, Soragna G, Erroi L, Migliardi M, Marangella M, Corradini M, Iannuzzella F, Belloni L, Somenzi D, Parmeggiani M, Pasquali S, Camerini C, Pezzotta M, Zani R, Movilli E, Cancarini G, Anwar S, Pruthi R, Kenchayikoppad S, Reyes J, Dasilva I, Furlano M, Calero F, Montanes R, Ayasreh N, Del Pozo M, Estorch M, Rousaud F, Ballarin JA, Bover J, Resende A, Dias CB, Dos Reis L, Jorgetti V, Woronik V, Panuccio V, Panuccio V, Enia G, Tripepi R, Cutrupi S, Pizzini P, Aliotta R, Zoccali C, Yildiz I, Sagliker Y, Demirhan O, Tunc E, Inandiklioglu N, Tasdemir D, Acharya V, Zhang L, Golea O, Sabry A, Ookalkar D, Capusa C, Radulescu D, Garneata L, Mircescu G, Ben Maiz H, Chen CH, Rome JP, Benzegoutta M, Paylar N, Eyupoglu K, Karatepe E, Esenturk M, Yavascan O, Grzegorzevska A, Shilo V, M-Mazdeh M, Francesco RC, Gouda Z, Adam SM, Emir I, Ocal F, Usta E, Kiralp N, Sagliker C, S Ozkaynak P, Sagliker HS, Bassuoni M, El-Wakil HS, Akar H, Yenicerioglu Y, Kose E, Sekin O. Mineral and bone disease - CKD 1-5. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Demirhan O, Demir C, Tunç E, nandıklıoğlu N, Sütcü E, Sadıkoğlu N, Ozcan B. The genotoxic effect of nicotine on chromosomes of human fetal cells: the first report described as an important study. Inhal Toxicol 2012; 23:829-34. [PMID: 22035122 DOI: 10.3109/08958378.2011.617398] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Recent studies have suggested a direct contribution of nicotine--the addictive component of tobacco and tobacco smoke--to human carcinogenesis, and it remains the most common harmful substance to which pregnant women are exposed. Also, it has deleterious effects on the fetus. The sperm of smoking fathers and newborns of smoking mothers have elevated frequencies of chromosome translocations and DNA strand breaks. OBJECTIVE We tried to understand the genotoxic effect of nicotine in pregnancies of active or passive smoking mothers. For this reason, we provide the evidence that nicotine exposure in vitro has detrimental effects on fetal cells. MATERIALS AND METHODS We examined the effect of nicotine sulphate on amniotic cells by designing an experimental setting consisting fetal cells grown in nicotine containing medium (25 ng/mL) in study group and fetal cells grown in control medium, which did not contain nicotine. RESULTS According to our findings, there is a significant difference of chromosomal aberrations (CAs) between nicotine containing medium grown cells and control medium grown cells, determined by the χ² test (P <0.001). We found CAs in 21.5% of cells analyzed. The 19.4% of the all cells had numerical aberrations. Chromosomes 21, 22, 8, 15 and 20 related numerical abnormalities were found to be the most frequent numerical abnormalities. CONCLUSION Results of this study confirm that the nicotine leads to significant direct genotoxic effects in human fetal cells in vitro. We speculate that there is an association between prenatal exposure to cigarette smoke and in utero aneuploidies.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, 01330 Balcalı, Adana, Turkey.
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Turgut M, Demirhan O, Tunc E, Bucak IH, Canoz PY, Temiz F, Tumgor G. Diagnosis of chromosomal abnormalities in a patient with thanatophoric dysplasia (TD) type I: The first report describing an important association between cytogenetic findings and TD. Am J Case Rep 2012; 13:109-13. [PMID: 23569503 PMCID: PMC3615938 DOI: 10.12659/ajcr.883026] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 05/10/2012] [Indexed: 11/11/2022]
Abstract
Background: Thanatophoric dysplasia (TD) is the most lethal and most severe type of dysplasia. It has distinct features, the most important of which is short tubular bones and short ribs with platyspondyly, allowing a precise radiologic and prenatal ultrasonographic diagnosis. It has been reported to be caused by mutations in the FGFR3 gene, but exactly how cytogenetic abnormalities might lead to TD is unclear. Case Report: We report a case of TD with different prenatal sonographic features compatible with the classification of type I. In the result of cytogenetic examination, we found de novo CAs in 28% of cells analyzed from the affected infant; 75% of the abnormalities were numerical, and of those, 25% were structural aberrations; 21% of cells revealed predominantly numerical aberrations. Monosomy 18, 21 and 22 was observed in 4% of cells, monosomy 20 in 2%, and monosomy 7, 8, 14, 17 and 19 in 1%. Structural changes were observed in 7% of cells. Conclusions: It appears that these chromosomes may be preferentially involved in and important for TD development.
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Affiliation(s)
- Mehmet Turgut
- Department of Pediatrics, Faculty of Medicine, Adıyaman University, Adiyaman, Turkey
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Inandiklioğlu N, Yilmaz S, Demirhan O, Erdoğan S, Tanyeli A. Chromosome imbalances and alterations of AURKA and MYCN genes in children with neuroblastoma. Asian Pac J Cancer Prev 2012; 13:5391-5397. [PMID: 23317189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND Neuroblastoma (NB), like most human cancers, is characterized by genomic instability, manifested at the chromosomal level as allelic gain, loss or rearrangement. Genetics methods, as well as conventional and molecular cytogenetics may provide valuable clues for the identification of target loci and successful search for major genes in neuroblastoma. We aimed to investigate AURKA and MYCN gene rearrangements and the chromosomal aberrations (CAs) to determine the prognosis of neuroblastoma. METHODS We performed cytogenetic analysis by G-banding in 25 cases [11 girls (44%) and 14 boys (66%)] and in 25 controls. Fluorescence in situ hybridization (FISH) with AURKA and MYCN gene probes was also used on interphase nuclei to screen for alterations. RESULTS Some 18.4% of patient cells exhibited CAs., with a significant difference between patient and control groups in the frequencies (P<0.0001). Some 72% of the cells had structural aberrations, and only 28% had numerical chnages in patients. Structural aberrations consisted of deletions, translocations, breaks and fragility in various chromosomes, 84% and 52% of the patients having deletions and translocations, respectively. Among these expressed CAs, there was a higher frequency at 1q21, 1q32, 2q21, 2q31, 2p24, 4q31, 9q11, 9q22, 13q14, 14q11.2, 14q24, and 15q22 in patients. 32% of the patients had chromosome breaks, most frequently in chromosomes 1, 2, 3, 4, 5, 8, 9, 11, 12, 19 and X. The number of cells with breaks and the genomic damage frequencies were higher in patients (p<0.001). Aneuploidies in chromosomes X, 22, 3, 17 and 18 were most frequently observed. Numerical chromosome abnormalities were distinctive in 10.7% of sex chromosomes. Fragile sites were observed in 16% of our patients. CONCLUSION Our data confirmed that there is a close correlation between amplification of the two genes, amplification of MYCN possibly contributing significantly to the oncogenic properties of AURKA. The high frequencies of chromosomal aberrations and amplifications of AURKA and MYCN genes indicate prognostic value in children with neuroblastomas and may point to contributing factors in their development.
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Affiliation(s)
- Nihal Inandiklioğlu
- Department of Medical Biology and Genetics, Faculty of Medicine, Çukurova University, Adana, Turkey
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Demirhan O, Taştemir D, Güneşaçar R, Güzel Aİ, Alptekin D. The first report described as an important study: The association of mannose-binding lectin gene 2 polymorphisms in children with Down syndrome. Indian J Hum Genet 2011; 17:59-64. [PMID: 22090714 PMCID: PMC3214319 DOI: 10.4103/0971-6866.86176] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND: Mannose-binding lectin gene 2 (MBL2) plays a very important role in the first line of host immune response in Down syndrome (DS). The importance of MBL2 gene polymorphisms in children with DS is unclear, and no research has addressed MBL2 gene polymorphisms in patients with DS. This is the first report describing an important association between MBL2 gene polymorphisms and infections in children with DS. MATERIALS AND METHODS: We compared the frequency of single-nucleotide polymorphisms (SNPs) at two codons of the MBL2 gene in a cross sectional cohort of 166 children with DS and 229 controls. Polymorphisms at codons 54 (GGC→GAC) and 57 (GGA→GAA) in exon 1 of the MBL2 gene were typed by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) technique using the restriction enzymes BshN1 (derivated from Bacillus sphaericus) and MboII (derivated from Moraxella bovis), respectively. RESULTS: MBL2 codon 54 GA genotype frequency was found to be lower in patients with DS (22.9%) than those of healthy controls (35.8%), differences were statistically significant (OR = 0.532, 95% CI = 0.339-0.836, P = 0.008). On the other hand, codon 57 polymorphism in the MBL2 gene was detected in none of the DS patients, but only one person in the control group showed codon 57 GA genotype (OR = 1.004, 95% CI = 0.996-1.013, P = 1.000). CONCLUSION: Our data provides an evidence for the first time that a homozygote or heterozygote for the variant, MBL2 alleles, is not associated with infections in patients with DS, and do not influence the incidence of infections.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Çukurova University, Adana, Turkey
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Demirhan O, Pazarbaşı A, Güzel Aİ, Taştemir D, Yılmaz B, Kasap M, Özgünen FT, Evrüke C, Demir C, Tunç E, Kocatürk-Sel S, Onatoğlu-Arıkan D, Koç S, Özer O, İnandıklıoğlu N. The Reliability of Maternal Serum Triple Test in Prenatal Diagnosis of Fetal Chromosomal Abnormalities of Pregnant Turkish Women. Genet Test Mol Biomarkers 2011; 15:701-7. [PMID: 21699408 DOI: 10.1089/gtmb.2010.0171] [Citation(s) in RCA: 2] [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: 11/12/2022] Open
Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Ayfer Pazarbaşı
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Ali İrfan Güzel
- Department of Medical Biology and Genetics, Faculty of Medicine, Rize University, Rize, Turkey
| | - Deniz Taştemir
- Vocational School of Health Services, Adiyaman University, Adiyaman, Turkey
| | - Bertan Yılmaz
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Mülkiye Kasap
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Fatma Tuncay Özgünen
- Department of Obstetrics and Gynecology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Cüneyt Evrüke
- Department of Obstetrics and Gynecology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Cansun Demir
- Department of Obstetrics and Gynecology, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Erdal Tunç
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Sabriye Kocatürk-Sel
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Dilge Onatoğlu-Arıkan
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Semra Koç
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Onur Özer
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Nihal İnandıklıoğlu
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
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Izmirli M, Inandiklioglu N, Abat D, Alptekin D, Demirhan O, Tansug Z, Bayazit Y. MTHFR gene polymorphisms in bladder cancer in the Turkish population. Asian Pac J Cancer Prev 2011; 12:1833-1835. [PMID: 22126575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Bladder cancer is the 9th most common cancer and is responsible for malignancy related death all on the world. Folate and folate related enzyme polymorphisms related to the cancer risk. The methylene tethrahydrofolate reductase (MTHFR) enzyme is folate related and association of bladder cancer and MTHFR gene. Our purpose was to assess the prevalence of MTHFR gene 677 CT and 1298 AC polymorphisms and Bladder cancer in Turkey. We intended that bladder cancer patients and controls and we used the Polymerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP) methods. The MTHFR gene C677T and A1298C polymorphisms were associated with an increased risk of bladder cancer in our population (For the MTHFR gene C677T polymorphism and A1298C polymorphism; p=0.036<0.05; p=0.278>0.05 respectively). Consequently, the MTHFR gene C677T polymorphism augments the risk of bladder cancer in Turkey.
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Affiliation(s)
- Muzeyyen Izmirli
- Department of Medical Biology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey.
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Yilmaz M, Pazarbasi A, Guzel A, Kocaturk-Sel S, Kasap H, Kasap M, Urunsak I, Basaran S, Alptekin D, Demirhan O. Association of serum sex steroid levels and bone mineral density with CYP17 and CYP19 gene polymorphisms in postmenopausal women in Turkey. Genet Mol Res 2011; 10:1999-2008. [DOI: 10.4238/vol10-3gmr1204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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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Abstract
Ring chromosome 22, a rare cytogenetic anomaly, has been described in over 60 cases in the medical literature. The aim of this report was to present a case carrying ring chromosome 22, and her family. It is a case report of a patient presented at Medical Faculty of Çukurova University in Turkey. An 8-year-old girl with ring chromosome 22 and her family were evaluated cytogenetically and clinically. A chromosome analysis of the proband revealed a de novo 46, XX, r(22)(p11.2;q13) karyotype. Our subject demonstrated the prominent features of this syndrome including profound mental retardation, language impairment, dysmorphic features, lack of speech, hyperactivity, and behavioral disorders. There is lack of consistency between the physical abnormalities that we observed in our subject and those observed for such patients in the literature. The wide range of manifestations observed in patients with this cytogenetic alteration is probably due to size differences in the deleted region.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Çukurova, Adana, Turkey
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Cetiner S, Demirhan O, Inal TC, Tastemir D, Sertdemir Y. Analysis of peripheral blood T-cell subsets, natural killer cells and serum levels of cytokines in children with Down syndrome. Int J Immunogenet 2010; 37:233-7. [DOI: 10.1111/j.1744-313x.2010.00914.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yilmaz M, Demirhan O, Kuçukosmanoglu E, Pehlivan M, Okan V, Balat O, Pehlivan S. Pregnancy in patients with chronic myeloid leukemia treated with imatinib. Leuk Lymphoma 2009; 48:2454-6. [DOI: 10.1080/10428190701658751] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
PURPOSE Genetic factors are known to be important in the etiology of bipolar disorder (BD). The fragile sites (FSs) are a very interesting subject for the study of clinical disorders. The aim of this study was to evaluate fragile sites seen in patients with bipolar disorder and find a correlation between some fragile sites and bipolar disorder. PATIENTS AND METHODS The frequencies of folate sensitive FSs were compared in short-term whole blood cultures from bipolar patients and from normal individuals. RESULTS The rate of FS expression in the patients was considerably higher than in the controls (p < 0.001). Several chromosome regions including 1p36, 1q21, 1q32, 3p25, 7q22, 7q32, 11q23, 12q24, 13q32, 14q24, Xp22 and Xq26 were represented considerably more often in the patients than in the controls (p value between 0.001 to 0.036). Among these FSs, the sites 1p36, 1q21, 3p25, 7q22, 7q32, and 14q24 were not observed in other studies. CONCLUSION These regions can be the most active of hot spots in the genomes of bipolar patients, and may harbor important genes associated with BD.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Balcali-Adana, Turkey.
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Guzel AI, Demirhan O, Pazarbasi A, Ozgunen FT, Kocaturk-Sel S, Tastemir D. Detection of Parental Origin and Cell Stage Errors of a Double Nondisjunction in a Fetus by QF-PCR. Genet Test Mol Biomarkers 2009; 13:73-7. [DOI: 10.1089/gtmb.2008.0054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ali Irfan Guzel
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Ayfer Pazarbasi
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Fatma Tuncay Ozgunen
- Department of Obstetrics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Sabriye Kocaturk-Sel
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
| | - Deniz Tastemir
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Adana, Turkey
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Demirhan O, Pazarbaşi A, Tanriverdi N, Aridoğan A, Karahan D. The clinical effects of isochromosome Xq in Klinefelter syndrome: report of a case and review of literature. Genet Couns 2009; 20:235-242. [PMID: 19852429] [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: 05/28/2023]
Abstract
We describe a male with a variant Klinefelter syndrome (KS), and trisomy Xq resulting from an isochromosome Xq [47,Xi(Xq)Y]. He had many characteristics of classical KS: bilateral atrophic testes and microcalcifications, normal masculinization, azoospermia, hypergonadotropic hypogonadism, elevated FSH and LH, normal intelligence and normal androgenization, but his stature was not increased. Ultrasonographic evaluation also revealed parenchymal alterations secondary to previous epididymo-orchitis. After initial evaluation the patient underwent incisional biopsy of testes which showed tubular hyalinisation, Leydig cell hyperplasia and Certoli cell syndrome. The i(Xq) was found in all cells analyzed. These findings indicate that extra copies of the long arm of X have phenotypic expression, even though activated only in early development. In conclusion, review of literature on 20 adult patients supports the view that the presence of an isochromosome Xq in KS has a favorable prognosis in terms of normal mental development and normal stature.
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Affiliation(s)
- O Demirhan
- Department of Medical Biology, University of Cukurova, Adana, Turkey
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Demirhan O, Pazarbaşi A, Tunç E, Karahan D, Tanriverdi N, Avci A, Tahiroğlu AY. The effect of a de novo pericentric inversion (10)(p11.1;q22.1) on aggressive behavior and hyperactivity. Genet Couns 2009; 20:69-71. [PMID: 19400544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Demirhan O, Pazarbasi A, Suleymanova-Karahan D, Tanriverdi N, Kilinc Y. Correlation of clinical phenotype with a pericentric inversion of chromosome 9 and genetic counseling. Saudi Med J 2008; 29:946-951. [PMID: 18626518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
OBJECTIVE To describe the history of 157 carriers of pericentric inversions on chromosome 9 [inv9] with karyotype analyses and evaluate the significance of these findings. METHODS We studied the incidence, clinical significance, and genetic counseling of inv9 p11;q12, p11;q13, and p11;q21 patients who were referred to our laboratory from various clinics of the Medical Faculty, Cukurova University, Adana, Turkey retrospectively from 157 cases of 15528 cytogenetic analyses collected between May 1993 and February 2007. RESULTS We found the incidence of inv9 to be 1.01%. From a review of 157 cases with inv9, it is concluded that the incidence of the spontaneous abortion group 30.6% appeared to be high among the adult patients with inv9. The 17 cases were found to have mental retardation, which gave an incidence of 10.8%. We here report the clinical and cytogenetic findings of 157 inv9 cases that had different problems. CONCLUSION Although, inv9 has been considered to be a normal variant, our observation implies a possible association between inv9 and abnormalities, suggesting that a susceptibility locus for these phenotypes may be located at the breakpoint of the inversion on chromosome 9, which may lead to cloning of a susceptibility gene for unspecified abnormalities. These findings could be used widely in clinical genetics, and as an effective tool for genetic counseling and reproductive guidance.
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Affiliation(s)
- Osman Demirhan
- Department of Medical Biology and Genetics, Faculty of Medicine, Cukurova University, Balcali, Adana, Turkey
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