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Saberzadeh J, Miri MR, Tabei MB, Dianatpour M, Fardaei M. Genetic variations of 21 STR markers on chromosomes 13, 18, 21, X, and Y in the south Iranian population. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049065. [PMID: 28002593 DOI: 10.4238/gmr15049065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Quantitative fluorescent polymerase chain reaction (QF-PCR), in recent years, has been accepted as a rapid, high throughput, and sensitive method for prenatal diagnosis of common chromosomal aneuploidies. Since short tandem repeats (STRs) are the cornerstone of QF-PCR technique, selection of the most polymorphic STR markers is an essential step for a successful QF-PCR assay. The genetic variation parameters of each STR marker differ among different populations. In this study, we investigated the size, frequency, heterozygosity, polymorphism information content, power of discrimination, and other genetic polymorphism data for 21 STR markers on chromosomes 13, 18, 21, X, and Y in 1000 amniotic fluid samples obtained from south Iranian women. Our results showed that all the 21 STR markers are highly polymorphic and informative in our population. The heterozygosity, polymorphism information content, and power of discrimination of the markers were 62-91.1%, 0.61-0.91, and 0.830-0.976, respectively. The locus D18S386 was the most polymorphic STR, while the locus DXYS218 was the least polymorphic STR among all the studied STRs. The present study has provided extensive data regarding the efficiency of the 21 STR markers for diagnosis of chromosomes 13, 18, 21, X, and Y aneuploidies in the south Iranian population.
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Affiliation(s)
- J Saberzadeh
- Medical Biotechnology Department, School of Advanced Medical Sciences and Technology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M R Miri
- Medical Biotechnology Department, School of Advanced Medical Sciences and Technology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M B Tabei
- Department of Medical Genetics, School of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Transgenic Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Dianatpour
- Department of Medical Genetics, School of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Transgenic Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M Fardaei
- Department of Medical Genetics, School of Medical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran .,Transgenic Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran .,Comprehensive Medical Genetic Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Miri M, Behzad-Behbahani A, Fardaei M, Farhadi A, Talebkhan Y, Mohammadi M, Tayebinia M, Farokhinejad F, Alavi P, Fanian M, Zare F, Saberzade J, Nikouyan N, Okhovat M, Ranjbaran R, Rafiei Dehbidi G, Naderi S. Construction of bacterial ghosts for transfer and expression of a chimeric hepatitis C virus gene in macrophages. J Microbiol Methods 2015; 119:228-32. [DOI: 10.1016/j.mimet.2015.11.009] [Citation(s) in RCA: 4] [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] [Received: 07/19/2015] [Revised: 11/10/2015] [Accepted: 11/10/2015] [Indexed: 01/06/2023]
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Manoochehri J, Masoumi Dehshiri R, Faraji H, Mohammadi S, Dastsooz H, Moradi T, Rezaei E, Sadeghi K, Fardaei M. Family screening for a novel ATP7B gene mutation, c.2335T>G, in the South of Iran. Iran J Ped Hematol Oncol 2014; 4:26-31. [PMID: 24734161 PMCID: PMC3980019] [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] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Accepted: 12/30/2013] [Indexed: 12/05/2022]
Abstract
BACKGROUND Wilson disease (WD) is a rare autosomal recessive disorder, which leads to copper metabolism, due to mutations in ATP7B gene. The gene responsible for WD consists of 21 exons that span a genomic region of about 80 kb and encodes a copper transporting P-type ATPase (ATP7B), a protein consisting of 1465 amino acids. Identifying mutation in ATP7B gene is important to find carrier individuals for proper counseling. A novel mutation in exon 8 of ATP7B gene, c.2335T>G (p.Trp779Gly), with severe neuropsychiatric condition in the South of Iran, was recently identified. The aim of this study was to screen 120 individuals from a large family using a simple amplification refractory mutation system PCR (ARMS-PCR) for carrier screening in the South of Iran. MATERIALS AND METHODS 120 individuals from family relatives of an index case in the Nasr Abad, south of Iran, were studied for screening of the c.2335T>G mutation. One patient with homozygous mutation and one homozygous normal individual were used as controls in this experiment. RESULTS Altogether, 16 out of 120 (13.3%) individuals within this region had heterozygous mutation. One individual with homozygote mutation was also identified. CONCLUSION Identification of carriers in families with affected individuals is of great importance for counseling before marriage. The results of this study can be used for further counseling programs in this population.
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Affiliation(s)
- J Manoochehri
- Department of Medical Genetics, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran,Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - R Masoumi Dehshiri
- Health Policy Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - H Faraji
- Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - S Mohammadi
- Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - H Dastsooz
- Department of Medical Genetics, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran,Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran,Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - T Moradi
- Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - E Rezaei
- Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - Kh Sadeghi
- Comprehensive Medical Genetics Centre, Shiraz, Iran
| | - M Fardaei
- Department of Medical Genetics, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran,Comprehensive Medical Genetics Centre, Shiraz, Iran,Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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Holt I, Furling D, Fardaei M, Sewry C, Jacquemin V, Butler-Browne G, Brook J, Morris G. D.P.4.10 Muscleblind-like proteins: Similarities and differences in normal and myotonic dystrophy muscle. Neuromuscul Disord 2008. [DOI: 10.1016/j.nmd.2008.06.258] [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: 11/26/2022]
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Abstract
Myotonic dystrophy (DM1) is the most common form of adult muscular dystrophy with an estimated incidence of 1/8000 births. The mutation responsible for this condition is an expanded CTG repeat within the 3' untranslated region of the protein kinase gene DMPK. Strong nucleosome positioning signals created by this expanded repeat cause a reduction in gene expression within the region. This "field effect" is further confounded by the retention of DMPK expansion containing transcripts, which acquire a toxic gain of function. Thus, the various manifestations exhibited by DM1 patients can be explained as a result of gene silencing, nuclear retention and sequestration of nuclear factors by the CUG containing transcript.
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Affiliation(s)
- K Larkin
- Department of Genetics, Queens Medical Centre, University of Nottingham, Nottingham, UK
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Abstract
Myotonic dystrophy (DM1) is the most common form of adult muscular dystrophy and is inherited as an autosomal dominant trait. The genetic basis of DM1 is the expansion of a CTG repeat in the 3' untranslated region of a protein kinase gene (DMPK). The molecular mechanism by which this expanded repeat produces the pathophysiology of DM1 remains unknown. Transcripts from the expanded allele accumulate as foci in the nucleus of DM1 cells and it has been suggested that these transcript foci sequester cellular proteins that are required for normal nuclear function. We have investigated the role of three RNA-binding proteins, CUG-BP, hnRNP C and MBNL, as possible sequestered factors. Using a combination of indirect immunofluorescence to detect endogenous proteins and overexpression of proteins with green fluorescent protein (GFP) tags we have shown that CUG-BP and hnRNP C do not co-localise with expanded repeat foci in DM1 cell lines. However, GFP-tagged MBNL does itself form foci in DM1 cell lines and co-localises with the foci of expanded repeat transcripts. GFP-tagged MBNL does not appear as foci in non-DM1 cell lines. This work provides further support for the involvement of MBNL in DM1.
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Affiliation(s)
- M Fardaei
- Institute of Genetics, University of Nottingham, Queen's Medical Centre, Nottingham NG7 2UH, UK
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