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Stiburkova B, Gabrikova D, Čepek P, Šimek P, Kristian P, Cordoba-Lanus E, Claverie-Martin F. Prevalence of URAT1 allelic variants in the Roma population. Nucleosides Nucleotides Nucleic Acids 2017; 35:529-535. [PMID: 27906637 DOI: 10.1080/15257770.2016.1168839] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The Roma represents a transnational ethnic group, with a current European population of 8-10 million. The evolutionary process that had the greatest impact on the gene pool of the Roma population is called the founder effect. Renal hypouricemia (RHUC) is a rare heterogenous inherited disorder characterized by impaired renal urate reabsorption. The affected individuals are predisposed to recurrent episodes of exercise-induced nonmyoglobinuric acute kidney injury and nephrolithiasis. To date, more than 150 patients with a loss-of-function mutation for the SLC22A12 (URAT1) gene have been found, most of whom are Asians. However, RHUC 1 patients have been described in a variety of ethnic groups (e.g., Arab Israelis, Iraqi Jews, Caucasians, and Roma) and in geographically noncontiguous countries. This study confirms our previous findings regarding the high frequency of SLC22A12 variants observed. Frequencies of the c.1245_1253del and c.1400C>T variants were found to be 1.92% and 5.56%, respectively, in a subgroup of the Roma population from five regions in three countries: Slovakia, Czech Republic, and Spain. Our findings suggested that the common dysfunction allelic variants of URAT1 exist in the general Roma population and thus renal hypouricemia should be kept in differential diagnostic algorithm on Roma patients with defect in renal tubular urate transport. This leads to confirm that the genetic drift in the Roma have increased the prevalence of hereditary disorders caused by very rare variants in major population.
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Affiliation(s)
- Blanka Stiburkova
- a Institute of Rheumatology , Prague , Czech Republic.,b Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague , Prague , Czech Republic
| | - Dana Gabrikova
- c Department of Biology , Faculty of Humanities and Natural Sciences, University of Presov , Presov , Slovakia
| | - Pavel Čepek
- a Institute of Rheumatology , Prague , Czech Republic
| | - Pavel Šimek
- a Institute of Rheumatology , Prague , Czech Republic.,b Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague , Prague , Czech Republic
| | - Pavol Kristian
- d Department of Infectology and Travel Medicine , Faculty of Medicine, P.J.Šafárik University , Košice , Slovakia
| | | | - Felix Claverie-Martin
- e Unidad de Investigacion, Hospital N. S. de Candelaria , Santa Cruz de Tenerife , Spain
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Bozikova A, Gabrikova D, Pitonak J, Bernasovska J, Macekova S, Lohajova-Behulova R. Ethnic differences in the association of thrombophilic polymorphisms with obstetric complications in Slovak and Roma (Gypsy) populations. Genet Test Mol Biomarkers 2014; 19:98-102. [PMID: 25549181 DOI: 10.1089/gtmb.2014.0232] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS Hereditary as well as acquired thrombophilia is associated with a higher incidence of severe obstetric complications such as preeclampsia, spontaneous pregnancy loss, placental abruption, and fetal growth retardation. The aim of our study was to examine the association of selected thrombophilic polymorphisms (factor V Leiden, MTHFR C677T, and MTHFR A1298C) with pregnancy complications in the Slovak majority population and the Roma (Gypsy) ethnic population. The study included 354 women; 120 patients and 105 controls from the Slovak majority population, 50 patients and 79 controls from the Slovak Roma population. Genotyping was performed by the real-time polymerase chain reaction method using TaqMan(®) MGB probes. RESULTS A statistically significant higher frequency of factor V Leiden (p=0.001, odds ratio [OR]=5.9) and MTHFR C677T polymorphism (p=0.011, OR=1.7) was observed in the Slovak majority patient group compared to the control group. The incidence of MTHFR A1298C polymorphism between patients and controls did not differ significantly. None of the three polymorphisms studied was in association with pregnancy complications in the group of Roma women. CONCLUSIONS Our study has confirmed the variable distribution of selected thrombophilic polymorphisms in different ethnic groups as well as their various effects on the clinical phenotype.
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Affiliation(s)
- Alexandra Bozikova
- 1 Department of Biology, Faculty of Humanities and Natural Sciences, Presov University , Presov, Slovakia
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Ivanov IS, Azmanov DN, Ivanova MB, Chamova T, Pacheva IH, Panova MV, Song S, Morar B, Yordanova RV, Galabova FK, Sotkova IG, Linev AJ, Bitchev S, Shearwood AMJ, Kancheva D, Gabrikova D, Karcagi V, Guergueltcheva V, Geneva IE, Bozhinova V, Stoyanova VK, Kremensky I, Jordanova A, Savov A, Horvath R, Brown MA, Tournev I, Filipovska A, Kalaydjieva L. Founder p.Arg 446* mutation in the PDHX gene explains over half of cases with congenital lactic acidosis in Roma children. Mol Genet Metab 2014; 113:76-83. [PMID: 25087164 DOI: 10.1016/j.ymgme.2014.07.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/14/2014] [Accepted: 07/14/2014] [Indexed: 02/04/2023]
Abstract
Investigation of 31 of Roma patients with congenital lactic acidosis (CLA) from Bulgaria identified homozygosity for the R446* mutation in the PDHX gene as the most common cause of the disorder in this ethnic group. It accounted for around 60% of patients in the study and over 25% of all CLA cases referred to the National Genetic Laboratory in Bulgaria. The detection of a homozygous patient from Hungary and carriers among population controls from Romania and Slovakia suggests a wide spread of the mutation in the European Roma population. The clinical phenotype of the twenty R446* homozygotes was relatively homogeneous, with lactic acidosis crisis in the first days or months of life as the most common initial presentation (15/20 patients) and delayed psychomotor development and/or seizures in infancy as the leading manifestations in a smaller group (5/20 patients). The subsequent clinical picture was dominated by impaired physical growth and a very consistent pattern of static cerebral palsy-like encephalopathy with spasticity and severe to profound mental retardation seen in over 80% of cases. Most patients had a positive family history. We propose testing for the R446* mutation in PDHX as a rapid first screening in Roma infants with metabolic acidosis. It will facilitate and accelerate diagnosis in a large proportion of cases, allow early rehabilitation to alleviate the chronic clinical course, and prevent further affected births in high-risk families.
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Affiliation(s)
- Ivan S Ivanov
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Dimitar N Azmanov
- Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia; Department of Diagnostic Genomics, PathWest, Perth, Australia
| | | | | | - Ilyana H Pacheva
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Margarita V Panova
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Sharon Song
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Australia
| | - Bharti Morar
- Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia
| | - Ralitsa V Yordanova
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Fani K Galabova
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Iglika G Sotkova
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Alexandar J Linev
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Stoyan Bitchev
- National Genetic Laboratory, Medical University-Sofia, Bulgaria
| | - Anne-Marie J Shearwood
- Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia
| | - Dalia Kancheva
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB, University of Antwerp, Belgium; Department of Medical Chemistry and Biochemistry, Molecular Medicine Centre, Medical University-Sofia, Bulgaria
| | - Dana Gabrikova
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Slovakia
| | - Veronika Karcagi
- Department of Molecular Genetics and Diagnostics, NIEH, Budapest, Hungary
| | | | - Ina E Geneva
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | | | - Vili K Stoyanova
- Department of Pediatrics and Medical Genetics, Plovdiv Medical University, Bulgaria
| | - Ivo Kremensky
- National Genetic Laboratory, Medical University-Sofia, Bulgaria
| | - Albena Jordanova
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB, University of Antwerp, Belgium; Department of Medical Chemistry and Biochemistry, Molecular Medicine Centre, Medical University-Sofia, Bulgaria
| | - Aleksey Savov
- National Genetic Laboratory, Medical University-Sofia, Bulgaria
| | - Rita Horvath
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Matthew A Brown
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Australia
| | - Ivailo Tournev
- Department of Neurology, Medical University-Sofia, Bulgaria; Department of Cognitive Science and Psychology, New Bulgarian University, Sofia, Bulgaria
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia; School of Chemistry and Biochemistry, The University of Western Australia, Perth, Australia
| | - Luba Kalaydjieva
- Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia.
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Gabrikova D, Mistrik M, Bernasovska J, Bozikova A, Behulova R, Tothova I, Macekova S. Founder mutations in NDRG1 and HK1 genes are common causes of inherited neuropathies among Roma/Gypsies in Slovakia. J Appl Genet 2013; 54:455-60. [PMID: 23996628 DOI: 10.1007/s13353-013-0168-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 08/13/2013] [Accepted: 08/20/2013] [Indexed: 11/29/2022]
Abstract
Autosomal recessive forms of Charcot-Marie-Tooth disease (CMT) account for less than 10 % of all CMT cases, but are more frequent in the populations with a high rate of consanguinity. Roma (Gypsies) are a transnational minority with an estimated population of 10 to 14 million, in which a high degree of consanguineous marriages is a generally known fact. Similar to the other genetically isolated founder populations, the Roma harbour a number of unique or rare autosomal recessive disorders, caused by "private" founder mutations. There are three subtypes of autosomal recessive CMT with mutations private to the Roma population: CMT4C, CMT4D and CMT4G. We report on the molecular examination of four families of Roma origin in Slovakia with early-onset demyelinating neuropathy and autosomal recessive inheritance. We detected mutation p.R148X (g.631C>T) in the NDRG1 (NM_006096.3) gene in two families and mutation g.9712G>C in the HK1 (NM_033498) gene in the other two families. These mutations cause CMT4D and CMT4G, respectively. The success of molecular genetic analysis in all families confirms that autosomal recessive forms of CMT caused by mutations on the NDRG1 and HK1 genes are common causes of inherited neuropathies among Slovak Roma. Providing genetic analysis of these genes for patients with Roma origin as a common part of diagnostic procedure would contribute to a better rate of diagnosed cases of demyelinating neuropathy in Slovakia and in other countries with a Roma minority.
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Affiliation(s)
- Dana Gabrikova
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Ul. 17. Novembra 1, 08116, Presov, Slovakia,
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Fröjmark AS, Schuster J, Sobol M, Entesarian M, Kilander MBC, Gabrikova D, Nawaz S, Baig SM, Schulte G, Klar J, Dahl N. Mutations in Frizzled 6 cause isolated autosomal-recessive nail dysplasia. Am J Hum Genet 2011; 88:852-860. [PMID: 21665003 DOI: 10.1016/j.ajhg.2011.05.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 05/01/2011] [Accepted: 05/11/2011] [Indexed: 11/18/2022] Open
Abstract
Inherited and isolated nail malformations are rare and heterogeneous conditions. We identified two consanguineous pedigrees in which some family members were affected by isolated nail dysplasia that suggested an autosomal-recessive inheritance pattern and was characterized by claw-shaped nails, onychauxis, and onycholysis. Genome-wide SNP array analysis of affected individuals from both families showed an overlapping and homozygous region of 800 kb on the long arm of chromosome 8. The candidate region spans eight genes, and DNA sequence analysis revealed homozygous nonsense and missense mutations in FZD(6), the gene encoding Frizzled 6. FZD(6) belongs to a family of highly conserved membrane-bound WNT receptors involved in developmental processes and differentiation through several signaling pathways. We expressed the FZD(6) missense mutation and observed a quantitative shift in subcellular distribution from the plasma membrane to the lysosomes, where the receptor is inaccessible for signaling and presumably degraded. Analysis of human fibroblasts homozygous for the nonsense mutation showed an aberrant response to both WNT-3A and WNT-5A stimulation; this response was consistent with an effect on both canonical and noncanonical WNT-FZD signaling. A detailed analysis of the Fzd(6)(-/-) mice, previously shown to have an altered hair pattern, showed malformed claws predominantly of the hind limbs. Furthermore, a transient Fdz6 mRNA expression was observed in the epidermis of the digital tips at embryonic day 16.5 during early claw morphogenesis. Thus, our combined results show that FZD6 mutations can result in severe defects in nail and claw formation through reduced or abolished membranous FZD(6) levels and several nonfunctional WNT-FZD pathways.
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Affiliation(s)
- Anne-Sophie Fröjmark
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Jens Schuster
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Maria Sobol
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden; Department of General and Molecular Genetics, National Taras Shevchenko University of Kyiv, Kiev 03680, Ukraine
| | - Miriam Entesarian
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden; Current address: Department of Women's and Children's Health Center for Molecular Medicine, Karolinska University Hospital, 171 76 Stockholm, Sweden
| | - Michaela B C Kilander
- Department of Physiology and Pharmacology, Section for Receptor Biology and Signaling, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Dana Gabrikova
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Sadia Nawaz
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Shahid M Baig
- Human Molecular Genetics Laboratory, Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Gunnar Schulte
- Department of Physiology and Pharmacology, Section for Receptor Biology and Signaling, Karolinska Institutet, 171 76 Stockholm, Sweden
| | - Joakim Klar
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden
| | - Niklas Dahl
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory and Science for Life Laboratory, Uppsala University, 751 85 Uppsala, Sweden.
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Behulova R, Varga I, Strhakova L, Bozikova A, Gabrikova D, Boronova I, Repiska V. INCIDENCE OF MICRODELETIONS IN THE AZF REGION OF THE Y CHROMOSOME IN SLOVAK PATIENTS WITH AZOOSPERMIA. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2011; 155:33-8. [DOI: 10.5507/bp.2011.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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