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Karamzade A, Babaei M, Saberi M, Golchin N, Khalil Nejad Sani Banaei A, Eshaghkhani Y, Golchehre Z, Keramatipour M. Identification of a novel truncating variant in AHI1 gene and a brief review on mutations spectrum. Mol Biol Rep 2021; 48:5339-5345. [PMID: 34191236 DOI: 10.1007/s11033-021-06508-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/21/2021] [Indexed: 10/21/2022]
Abstract
Joubert syndrome (JS) is a rare inherited neurodevelopmental condition characterized by hypotonia, ataxia, developmental delay, abnormal eye movements, neonatal respiratory disturbance and unique midbrain-hindbrain malformation, known as the molar tooth sign. JS is a genetically heterogeneous disorder with nearly 35 ciliary genes are implicated in its pathogenesis. AHI1 gene is one of the most frequently mutated gene in JS patients which is accounted for 8-11% of cases, particularly in Arab population. AHI1 encodes a cilium-localized protein with a significant role in mediating vesicle trafficking, ciliogenesis and cell polarity. Here, we report a novel pathogenic variant in AHI1 gene and review previously published mutations in AHI1 gene briefly. Whole exome sequencing was employed to determine the causative mutation in an Iranian Arab family with JS from southwestern Iran. Segregation analysis of the candidate variant in the family members was performed using PCR-Sanger sequencing. This approach found a novel homozygous nonsense variant c.832C > T (p.Gln278Ter) in AHI1. Segregation analysis was consistent with individual's phenotype and an autosomal recessive pattern in the family. The variant residing in a relatively highly conserved region and fulfilled the criteria required to be classified as a pathogenic variant based on American College of Medical Genetics and Genomics guidelines. This study confirms the diagnosis of JS in this family and highlights the efficiency of next-generation sequencing-based technique to identify the genetic causes of hereditary disorders with locus heterogeneity.
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Affiliation(s)
- Arezou Karamzade
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Watson Genetic Laboratory, North Kargar street, Tehran, Iran
| | - Meisam Babaei
- Department of Pediatrics, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Mohammad Saberi
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Golchin
- Watson Genetic Laboratory, North Kargar street, Tehran, Iran
| | | | - Yeganeh Eshaghkhani
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Golchehre
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Keramatipour
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. .,Watson Genetic Laboratory, North Kargar street, Tehran, Iran.
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Abstract
INTRODUCTION Ataxia telangiectasia (A-T) is a rare autosomal recessive, multisystemic disease. Patients with the A-T syndrome present a broad spectrum of disease phenotypes. The ATM (ataxia telangiectasia mutated) gene, the only causative gene for A-T. METHOD A patient of Persian origin presenting with typical A-T was referred to our genetics centre for specialized genetic counselling and testing. Targeted next-generation sequencing (NGS) was applied. Sanger sequencing was used to confirm the candidate variant. Modelling was performed using the SWISS-MODEL server. RESULTS A homozygous stop-gain variant c.829G > T (p.E277*) was found in the ATM gene. This variant was confirmed by Sanger sequencing and modelling of native structure, and truncated structure was performed. CONCLUSION To date, very few pathogenic variants of the ATM gene have been reported from the Iranian population. The finding has implications in molecular diagnostic for A-T in Iran.
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Affiliation(s)
- Azam Pourahmadiyan
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Paria Alipour
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Neda Golchin
- Ahvaz Noor Medical Genetics Laboratory, Ahvaz, Iran
| | - Mohammad Amin Tabatabaiefar
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
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Tahmasebi-Birgani M, Hajjari M, Golchin N, Shalbafan B, Mohammadi-Asl J, Sadeghian F. Whole exome sequencing revealed a novel dystrophin-related protein-2 ( DRP2) deletion in an Iranian family with symptoms of polyneuropathy. Iran J Basic Med Sci 2019; 22:576-580. [PMID: 31217940 PMCID: PMC6556509 DOI: 10.22038/ijbms.2019.30754.7414] [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] [Indexed: 11/16/2022]
Abstract
Objective(s): Charcot-Marie Tooth disease (CMT) is one of the main inherited causes of motor and sensory neuropathies with variable expressivity and age-of onset. Although more than 70 genes have been identified for CMT, more studies are needed to discover other genes involved in CMT. Introduction of whole exome sequencing (WES) to capture all the exons may help to find these genes. Materials and Methods: Here, we tried to find the genetic cause of the neuropathy in two Iranian brothers using WES. Blood sample was collected from probands and their family members to extract the genomic DNA. The extracted DNA from one of the affected case was subjected for WES. The variant calls were filtered to reveal the pathogenic variant. Presence of the candidate mutation was confirmed using Sanger sequencing. The pathogenic potential of the variant was examined using in silico software. Using ClustalW multiple alignment, the presence of variant in conserved domain of protein was investigated. The parent and another affected boy were also checked for presence of the variant using PCR-sequencing. Results: The obtained data presented a novel TTC del mutation in CDS 738 of dystrophin related protein 2 (DRP2) gene, which was validated by sequencing. The variant was located in a conserved domain of DRP2 protein and predicted as pathogenic. Two affected boys were hemizygous for the mutation and received the mutation from mother. Conclusion: Here, we provided the evidence for the contribution of DRP2 in CMT. Also, the symptoms shed light on molecular aspect of this genetically heterogeneous disease.
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Affiliation(s)
- Maryam Tahmasebi-Birgani
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammadreza Hajjari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | | | - Bita Shalbafan
- Iranian Social Security Organization, Labafinejad Hospital, Tehran, Iran
| | | | - Forouzan Sadeghian
- Aboozar Children's Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Helal M, Mazaheri N, Shalbafan B, Malamiri RA, Dilaver N, Buchert R, Mohammadiasl J, Golchin N, Sedaghat A, Mehrjardi MYV, Haack TB, Riess O, Chung WK, Galehdari H, Shariati G, Maroofian R. Clinical presentation and natural history of infantile-onset ascending spastic paralysis from three families with an ALS2 founder variant. Neurol Sci 2018; 39:1917-1925. [PMID: 30128655 DOI: 10.1007/s10072-018-3526-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 05/16/2018] [Accepted: 08/05/2018] [Indexed: 12/11/2022]
Abstract
Biallelic mutations of the alsin Rho guanine nucleotide exchange factor (ALS2) gene cause a group of overlapping autosomal recessive neurodegenerative disorders including infantile-onset ascending hereditary spastic paralysis (IAHSP), juvenile primary lateral sclerosis (JPLS), and juvenile amyotrophic lateral sclerosis (JALS/ALS2), caused by retrograde degeneration of the upper motor neurons of the pyramidal tracts. Here, we describe 11 individuals with IAHSP, aged 2-48 years, with IAHSP from three unrelated consanguineous Iranian families carrying the homozygous c.1640+1G>A founder mutation in ALS2. Three affected siblings from one family exhibit generalized dystonia which has not been previously described in families with IAHSP and has only been reported in three unrelated consanguineous families with JALS/ALS2. We report the oldest individuals with IAHSP to date and provide evidence that these patients survive well into their late 40s with preserved cognition and normal eye movements. Our study delineates the phenotypic spectrum of IAHSP and ALS2-related disorders and provides valuable insights into the natural disease course.
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Affiliation(s)
- Mayada Helal
- Department of Pediatrics, Division of Molecular Genetics, Columbia University Medical Center, 1150 St. Nicholas Avenue, Room 620, New York, NY, 10032, USA
| | - Neda Mazaheri
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.,Narges Medical Genetics and Prenatal Diagnosis Laboratory, East Mihan Ave., Kianpars, Ahvaz, Iran
| | - Bita Shalbafan
- Iranian Social Security Organization, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Azizi Malamiri
- Department of Paediatric Neurology, Golestan Medical, Educational, and Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nafi Dilaver
- Swansea University Medical School, Swansea University, Swansea, Wales, SA2 8PP, UK
| | - Rebecca Buchert
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, 72074, Tuebingen, Germany
| | - Javad Mohammadiasl
- Department of Genetics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Ahvaz Noor Genetics Laboratory, Ahvaz, Iran
| | | | - Alireza Sedaghat
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, East Mihan Ave., Kianpars, Ahvaz, Iran.,Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Yahya Vahidi Mehrjardi
- Medical Genetics Research Centre, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Tobias B Haack
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, 72074, Tuebingen, Germany
| | - Olaf Riess
- Institute of Medical Genetics and Applied Genomics, University of Tuebingen, 72074, Tuebingen, Germany
| | - Wendy K Chung
- Department of Pediatrics, Division of Molecular Genetics, Columbia University Medical Center, 1150 St. Nicholas Avenue, Room 620, New York, NY, 10032, USA.,Departments of Medicine, Columbia University Medical Center, 1150 St. Nicholas Avenue, Room 620, New York, NY, 10032, USA
| | - Hamid Galehdari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Gholamreza Shariati
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, East Mihan Ave., Kianpars, Ahvaz, Iran.,Department of Genetics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Reza Maroofian
- Molecular and Clinical Sciences Institute, St George's University of London, Cranmer Terrace, London, SW17 0RE, UK.
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Nikkhah E, Safaralizadeh R, Mohammadiasl J, Tahmasebi Birgani M, Hosseinpour Feizi MA, Golchin N. Identification of A Novel Compound Heterozygous Mutation in BBS12 in An Iranian Family with Bardet-Biedl Syndrome Using Targeted Next Generation Sequencing. Cell J 2018; 20:284-289. [PMID: 29633607 PMCID: PMC5893301 DOI: 10.22074/cellj.2018.5012] [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] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 03/21/2017] [Indexed: 01/27/2023]
Abstract
Bardet-Biedl syndrome (BBS) is a pleiotropic and multisystemic disorder characterized by rod-cone dystrophy, polydactyly,
learning difficulties, renal abnormalities, obesity and hypogonadism. This disorder is genetically heterogeneous. Until
now, a total of nineteen genes have been identified for BBS whose mutations explain more than 80% of diagnosed
cases. Recently, the development of next generation sequencing (NGS) technology has accelerated mutation screening
of target genes, resulting in lower cost and less time consumption. Here, we screened the most common BBS genes
(BBS1-BBS13) using NGS in an Iranian family of a proposita displaying symptoms of BBS. Among the 18 mutations
identified in the proposita, one (BBS12 c.56T>G and BBS12 c.1156C>T) was novel. This compound heterozygosity
was confirmed by Sanger sequencing in the proposita and her parents. Although our data were presented as a case
report, however, we suggest a new probable genetic mechanism other than the conventional autosomal recessive
inheritance of BBS. Additionally, given that in some Iranian provinces, like Khuzestan, consanguineous marriages
are common, designing mutational panels for genetic diseases is strongly recommended, especially for those with an
autosomal recessive inheritance pattern.
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Affiliation(s)
- Emad Nikkhah
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
| | - Reza Safaralizadeh
- Department of Animal Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran.
| | - Javad Mohammadiasl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Tahmasebi Birgani
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Golchin N, Hajjari M, Malamiri RA, Aminzadeh M, Mohammadi-Asl J. Identification of a novel mutation in ARSA gene in three patients of an Iranian family with metachromatic leukodystrophy disorder. Genet Mol Biol 2017; 40:759-762. [PMID: 29111560 PMCID: PMC5738620 DOI: 10.1590/1678-4685-gmb-2016-0110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 04/03/2017] [Indexed: 11/21/2022] Open
Abstract
Metachromatic leukodystrophy disorder (MLD) is an autosomal recessive and lysosomal storage disease. The disease is caused by the deficiency of the enzyme arylsulfatase A (ARSA) which is encoded by the ARSA gene. Different mutations have been reported in different populations. The present study was aimed to detect the mutation type of the ARSA gene in three relative Iranian patients. We found a novel homozygous missense mutation c.1070 G > T (p.Gly357Val) in exon 6 of these patients. The mutation was found to be reported for the first time in MLD patients. The data can update the mutation profile and contribute toward improved clinical management and counseling of MLD patients.
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Affiliation(s)
| | - Mohammadreza Hajjari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Reza Azizi Malamiri
- Department of Pediatric Neurology Golestan Medical, Educational and Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Aminzadeh
- Department of Pediatrics, Faculty of Medicine, Abuzar Children's Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Javad Mohammadi-Asl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Iran
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7
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Golchin N, Hajjari M, Mohammadi-asl J, Tahmasebi Birgani M. Identification of the mutation p.S867P in the PTPRQ gene in an Iranian family with hearing impairment. Meta Gene 2017. [DOI: 10.1016/j.mgene.2017.04.007] [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: 10/19/2022] Open
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Tabatabaiefar MA, Alipour P, Pourahmadiyan A, Fattahi N, Shariati L, Golchin N, Mohammadi-Asl J. A novel pathogenic variant in an Iranian Ataxia telangiectasia family revealed by next-generation sequencing followed by in silico analysis. J Neurol Sci 2017; 379:212-216. [PMID: 28716242 DOI: 10.1016/j.jns.2017.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 11/13/2016] [Revised: 06/04/2017] [Accepted: 06/11/2017] [Indexed: 01/27/2023]
Abstract
Ataxia telangiectasia (A-T) is a neurodegenerative autosomal recessive disorder with the main characteristics of progressive cerebellar degeneration, sensitivity to ionizing radiation, immunodeficiency, telangiectasia, premature aging, recurrent sinopulmonary infections, and increased risk of malignancy, especially of lymphoid origin. Ataxia Telangiectasia Mutated gene, ATM, as a causative gene for the A-T disorder, encodes the ATM protein, which plays an important role in the activation of cell-cycle checkpoints and initiation of DNA repair in response to DNA damage. Targeted next-generation sequencing (NGS) was performed on an Iranian 5-year-old boy presented with truncal and limb ataxia, telangiectasia of the eye, Hodgkin lymphoma, hyper pigmentation, total alopecia, hepatomegaly, and dysarthria. Sanger sequencing was used to confirm the candidate pathogenic variants. Computational docking was done using the HEX software to examine how this change affects the interactions of ATM with the upstream and downstream proteins. Three different variants were identified comprising two homozygous SNPs and one novel homozygous frameshift variant (c.80468047delTA, p.Thr2682ThrfsX5), which creates a stop codon in exon 57 leaving the protein truncated at its C-terminal portion. Therefore, the activation and phosphorylation of target proteins are lost. Moreover, the HEX software confirmed that the mutated protein lost its interaction with upstream and downstream proteins. The variant was classified as pathogenic based on the American College of Medical Genetics and Genomics guideline. This study expands the spectrum of ATM pathogenic variants in Iran and demonstrates the utility of targeted NGS in genetic diagnostics.
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Affiliation(s)
- Mohammad Amin Tabatabaiefar
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Paria Alipour
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Azam Pourahmadiyan
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Najmeh Fattahi
- Clinical Biochemistry Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Science, Shahrekord, Iran
| | - Laleh Shariati
- Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Javad Mohammadi-Asl
- Ahvaz Noor Genetics Laboratory, Ahvaz, Iran; Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Asnafi AA, Khodadi E, Golchin N, Alghasi A, Tavakolifar Y, Saki N. Association between microRNA-21, microRNA-150, and micro-RNA-451 expression and clinical outcome of patients with acute lymphoblastic leukemia. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s11515-016-1437-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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10
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Golchin N, Kheirandish M, Sharifi Z, Samiee S, Kokhaei P, Pourpak Z. Quantification of viral genome in cord blood donors by real time PCR to investigate human herpesvirus type 8 active infection. Transfus Apher Sci 2015; 53:378-80. [PMID: 26283174 DOI: 10.1016/j.transci.2015.08.001] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 08/02/2015] [Accepted: 08/04/2015] [Indexed: 02/08/2023]
Abstract
Umbilical cord blood (UCB) is one of the most important sources of hematopoietic stem cells which can be used for transplantation. The transplanted CB stem cells might cause infections in recipients. The aim of this study is to evaluate Human Herpes Virus8 (HHV8) as a Rhadinovirus among CB samples in order to assess safety of cord blood stem cells transplantation. To assess this aim, we surveyed 800 cord blood specimens by Real Time PCR.The overall HHV8 incidence in cord blood mononuclear cells was 1.38% and none of them was in lytic phase of HHV8. The authors suggest further HHV8 study on CB samples for transplantation.
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Affiliation(s)
- Neda Golchin
- Department of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Maryam Kheirandish
- Department of Immunology, Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
| | - Zohreh Sharifi
- Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Shahram Samiee
- Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Parviz Kokhaei
- Cancer Research Center and Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran
| | - Zahra Pourpak
- Department of Immunology, Asthma and Allergy Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Shahjahani M, Khodadi E, Seghatoleslami M, Asl JM, Golchin N, Zaieri ZD, Saki N. Rare Cytogenetic Abnormalities and Alteration of microRNAs in Acute Myeloid Leukemia and Response to Therapy. Oncol Rev 2015; 9:261. [PMID: 26779308 PMCID: PMC4698590 DOI: 10.4081/oncol.2015.261] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 08/06/2014] [Revised: 10/06/2014] [Accepted: 11/29/2014] [Indexed: 12/13/2022] Open
Abstract
Acute myeloid leukemia (AML) is the most common acute leukemia in adults, which is heterogeneous in terms of morphological, cytogenetic and clinical features. Cytogenetic abnormalities, including karyotype aberrations, gene mutations and gene expression abnormalities are the most important diagnostic tools in diagnosis, classification and prognosis in acute myeloid leukemias. Based on World Health Organization (WHO) classification, acute myeloid leukemias can be divided to four groups. Due to the heterogeneous nature of AML and since most therapeutic protocols in AML are based on genetic alterations, gathering further information in the field of rare disorders as well as common cytogenetic abnormalities would be helpful in determining the prognosis and treatment in this group of diseases. Recently, the role of microRNAs (miRNAs) in both normal hematopoiesis and myeloid leukemic cell differentiation in myeloid lineage has been specified. miRNAs can be used instead of genes for AML diagnosis and classification in the future, and can also play a decisive role in the evaluation of relapse as well as response to treatment in the patients. Therefore, their use in clinical trials can affect treatment protocols and play a role in therapeutic strategies for these patients. In this review, we have examined rare cytogenetic abnormalities in different groups of acute myeloid leukemias according to WHO classification, and the role of miRNA expression in classification, diagnosis and response to treatment of these disorders has also been dealt with.
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Affiliation(s)
- Mohammad Shahjahani
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Elahe Khodadi
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Seghatoleslami
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Javad Mohammadi Asl
- Department of Medical Genetics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Neda Golchin
- Noor Clinical & Specialty Laboratory, Ahvaz, Iran
| | - Zeynab Deris Zaieri
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia & Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Masbi MH, Mohammadiasl J, Galehdari H, Ahmadzadeh A, Tabatabaiefar MA, Golchin N, Haghpanah V, Rahim F. Characterization of Wild-Type and Mutated RET Proto-Oncogene Associated with Familial Medullary Thyroid Cancer. Asian Pac J Cancer Prev 2014; 15:2027-33. [DOI: 10.7314/apjcp.2014.15.5.2027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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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13
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Criswell S, Perlmutter J, Golchin N, Flores H, Hobson A, Aschner M, Erikson K, Checkoway H, Racette B. Basal ganglia intensity indices and diffusion weighted imaging in manganese-exposed welders. Occup Environ Med 2011. [DOI: 10.1136/oemed-2011-100382.19] [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: 11/04/2022]
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Karimi M, Golchin N, Tabbal SD, Hershey T, Videen TO, Wu J, Usche JWM, Revilla FJ, Hartlein JM, Wernle AR, Mink JW, Perlmutter JS. Subthalamic nucleus stimulation-induced regional blood flow responses correlate with improvement of motor signs in Parkinson disease. Brain 2008; 131:2710-9. [PMID: 18697909 DOI: 10.1093/brain/awn179] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Deep brain stimulation of the subthalamic nucleus (STN DBS) improves motor symptoms in idiopathic Parkinson's disease, yet the mechanism of action remains unclear. Previous studies indicate that STN DBS increases regional cerebral blood flow (rCBF) in immediate downstream targets but does not reveal which brain regions may have functional changes associated with improved motor manifestations. We studied 48 patients with STN DBS who withheld medication overnight and underwent PET scans to measure rCBF responses to bilateral STN DBS. PET scans were performed with bilateral DBS OFF and ON in a counterbalanced order followed by clinical ratings of motor manifestations using Unified Parkinson Disease Rating Scale 3 (UPDRS 3). We investigated whether improvement in UPDRS 3 scores in rigidity, bradykinesia, postural stability and gait correlate with rCBF responses in a priori determined regions. These regions were selected based on a previous study showing significant STN DBS-induced rCBF change in the thalamus, midbrain and supplementary motor area (SMA). We also chose the pedunculopontine nucleus region (PPN) due to mounting evidence of its involvement in locomotion. In the current study, bilateral STN DBS improved rigidity (62%), bradykinesia (44%), gait (49%) and postural stability (56%) (paired t-tests: P < 0.001). As expected, bilateral STN DBS also increased rCBF in the bilateral thalami, right midbrain, and decreased rCBF in the right premotor cortex (P < 0.05, corrected). There were significant correlations between improvement of rigidity and decreased rCBF in the SMA (r(s) = -0.4, P < 0.02) and between improvement in bradykinesia and increased rCBF in the thalamus (r(s) = 0.31, P < 0.05). In addition, improved postural reflexes correlated with decreased rCBF in the PPN (r(s) = -0.38, P < 0.03). These modest correlations between selective motor manifestations and rCBF in specific regions suggest possible regional selectivity for improvement of different motor signs of Parkinson's disease.
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Affiliation(s)
- M Karimi
- Department of Neurology, Washington University School of Medicine, St Louis, MO 63110, USA
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