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Wulandari RD, Lyrawati D, Fatchiyah F, Fitri LE. Thalassemia Major and Intermedia Patients in East Java do not Show Fetal Hemoglobin Level Difference in Relation to XMNI Polymorphism. Med Arch 2021; 74:90-94. [PMID: 32577047 PMCID: PMC7296421 DOI: 10.5455/medarh.2020.74.90-94] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Introduction Thalassemia is a genetic disorder, which shows, varies phenotype due to genetic modifier. XmnI is one of the genetic modifiers which affect clinical severity in thalassemia. XmnI polymorphism may increase HbF production beyond fetal life, thus ameliorating the clinical phenotype. Aim this study aimed to investigate the difference in HbF level and the relation of HbF level and XmnI polymorphism in Thalassemia Major (TM) and Thalassemia Intermedia (TI) patients. Methods forty-eight beta thalassemia patients (28 males and 20 females), consists of 16 TM and 32 TI; mean age, 25.30 year old. Hemoglobin Fetal and HbA2 level were determined using High performance Liquid Chromatography (HPLC), and XmnI polymorphism was confirmed by PCR-RFLP. Statistical analysis was done using T-test, Mann-Whitney and Pearson Chi-square. Results The frequency of heterozygote (+/-) XmnI polymorphism in TM and TI patients was 56.25% vs 71.87%, while the frequency of homozygote (-/-) in TM and TI was 43.75% vs 28.13% with p value >0.05. The insignificant difference also found in HbF level between XmnI +/- and -/- in TM and TI patients. Conclusion This study revealed that thalassemia major and thalassemia intermedia patients in East Java showed similar XmnI polymorphism. These phenomena also showed by HbF level in relation to XmnI polymorphism in the phenotype groups (TM and TI).
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Affiliation(s)
- Retno Dwi Wulandari
- Doctoral Program in Medical Science, Faculty of Medicine, University of Brawijaya, Indonesia.,Department of Biomedical, Faculty of Medicine, University of Wijaya Kusuma Surabaya, Indonesia
| | - Diana Lyrawati
- Department of Pharmacy, Faculty of Medicine, University of Brawijaya, Indonesia
| | - Fatchiyah Fatchiyah
- Department of Biology, Faculty of Mathematics and Natural Sciences, University of Brawijaya, Indonesia
| | - Loeki Enggar Fitri
- Department of Parasitology, Faculty of Medicine, University of Brawijaya, Indonesia
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Sajadpour Z, Amini-Farsani Z, Motovali-Bashi M, Yadollahi M, Khosravi-Farsani N. Association between Different Polymorphic Markers and β-Thalassemia Intermedia in Central Iran. Hemoglobin 2020; 44:27-30. [PMID: 31899996 DOI: 10.1080/03630269.2019.1709204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
β-Thalassemia intermedia (β-TI) is a clinical condition characterized by moderate, non transfusional anemia and hepatosplenomegaly. The main objective of this study was to determine the molecular basis of the clinical phenotype of β-TI in Iran. To elucidate the mild phenotype of many patients with β-TI, we screened for three prevalent β-globin gene mutations [IVS-II-1 (G>A) HBB: c.315+1G>A, IVS-I-110 (G>A) HBB: c.93-21G>A and IVS-I-5 (G>C) [HBB: c.92+5G>C], deletions on the α-globin genes, XmnI polymorphisms and restriction fragment length polymorphism (RFLP) haplotypes on the β-globin gene cluster in 50 β-TI patients. Fifty-eight percent of the patients (29 cases) were associated with the mentioned mutations. We showed that the HBB: c.315+1G>A mutation is linked to haplotype [+ - + +] (57.69%). This haplotype is in linkage disequilibrium with the XmnI polymorphism (NG_000007.3: g.42677C>T) and has been associated with increased expression of Hb F in β-TI patients. The XmnI polymorphism is defined in association with this prevalent mutation. Two patients had a single α-globin gene deletion [-α3.7 (rightward) deletion]. The main genetic factor in mild phenotype β-TI patients is the linkage of an XmnI polymorphism (NG_000007.3: g.42677C>T) with the HBB: c.315+1G>A (80.76%), which is associated with increased production of Hb F and coinheritance of haplotype [+ - + +] with β-TI, especially with the homozygous HBB: c.315+1G>A mutation. Molecular basis of β-TI could be explained by the involvement of different factors that tend to develop the disease phenotype.
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Affiliation(s)
- Zahra Sajadpour
- Genetic Division, Biology Department, Faculty of Sciences, University of Isfahan, Isfahan, Iran
| | - Zeinab Amini-Farsani
- Young Researchers and Elites Club, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Majid Motovali-Bashi
- Genetic Division, Biology Department, Faculty of Sciences, University of Isfahan, Isfahan, Iran
| | - Mitra Yadollahi
- Department of Operative Dentistry, School of Dentistry, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Doosti Irani A, Cheraghi Z, Bitaraf S, Cheraghi P, Safiri S. Prevalence of Alpha and Beta-Thalassemia Mutations Among Carriers of Thalassemia in Shadegan City, Southwest of Iran. ACTA ACUST UNITED AC 2015. [DOI: 10.17795/zjrms1032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Motovali-Bashi M, Ghasemi T. Role of XmnIgG Polymorphism in Hydroxyurea Treatment and Fetal Hemoglobin Level at Isfahanian Intermediate β-Thalassemia Patients. IRANIAN BIOMEDICAL JOURNAL 2015; 19:177-82. [PMID: 26024726 PMCID: PMC4571014 DOI: 10.7508/ibj.2015.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND β-thalassemia is the most common monogenic disorder in human. The (C-->T) polymorphism at -158 upstream region of the γG-globin gene and pharmacological factors such as hydroxyurea have been reported to influence γ-globin gene expression and the severity of clinical symptoms of β-thalassemia. METHODS In the present study, 51 β-thalassemia intermediate patients were studied. Xmn1γG polymorphism genotype was determined using Tetra-Primer ARMS-PCR technique. Hemoglobin (Hb) and fetal hemoglobin (HbF) levels were determined by gel electrophoresis. RESULTS Of 51 patients, 35 (68.6%) patients were heterozygous (CT) and 16 (31.4%) patients were homozygous (CC). Of 30 patients under treatment by hydroxyurea, 20 (66.7%) patients were heterozygous (CT) and 10 (33.3%) patients were homozygous (CC). Our results demonstrated that in the heterozygous (CT) genotype, the Hb (9.58 ± 1.25 gm/dl) and HbF (89.30 ± 21.87) levels were significantly higher in comparison with homozygous (CC) genotype (7.94 ± 1.34 gm/dl and 70.32 ± 40.56, respectively). Furthermore, we observed that after drug usage, the Hb and HbF levels in patients with heterozygous (CT) genotype (0.7 ± 1.26 gm/dl and 5.95 ± 14.8, respectively) raised more in comparison with homozygous (CC) genotype (0.26 ± 1.43 gm/dl and 0.8 ± 1.31, respectively). CONCLUSION Hb and HbF levels in the patients carrying T allele are increased significantly, and they also response to hydroxyurea treatment.
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Affiliation(s)
- Majid Motovali-Bashi
- Genetic Division, Dept. of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran
| | - Tayyebeh Ghasemi
- Genetic Division, Dept. of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran
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Said F, Abdel-Salam A. XmnI polymorphism: Relation to β-thalassemia phenotype and genotype in Egyptian Children. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2015. [DOI: 10.1016/j.ejmhg.2014.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Ali N, Ayyub M, Khan SA, Ahmed S, Abbas K, Malik HS, Tashfeen S. Frequency of Gγ-globin promoter −158 (C>T) XmnI polymorphism in patients with homozygous/compound heterozygous beta thalassaemia. Hematol Oncol Stem Cell Ther 2015; 8:10-5. [DOI: 10.1016/j.hemonc.2014.12.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 11/20/2014] [Accepted: 12/09/2014] [Indexed: 10/24/2022] Open
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Lim WF, Muniandi L, George E, Sathar J, Teh LK, Lai MI. HbF in HbE/β-thalassemia: A clinical and laboratory correlation. Hematology 2014; 20:349-53. [DOI: 10.1179/1607845414y.0000000203] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- Wai Feng Lim
- Department of PathologyFaculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
| | - Logeswaran Muniandi
- Department of PathologyFaculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
| | - Elizabeth George
- Department of PathologyFaculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
- Genetic Medicine Research Centre, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
| | - Jameela Sathar
- Department of HaematologyAmpang Hospital, Ampang, Selangor, Malaysia
| | - Lai Kuan Teh
- Department of PathologyFaculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
| | - Mei I Lai
- Department of PathologyFaculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
- Genetic Medicine Research Centre, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Malaysia
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Neishabury M, Zamani F, Keyhani E, Azarkeivan A, Abedini SS, Eslami MS, Kakroodi ST, Vesiehsari MJ, Najmabadi H. The influence of the BCL11A polymorphism on the phenotype of patients with beta thalassemia could be affected by the beta globin locus control region and/or the Xmn1-HBG2 genotypic background. Blood Cells Mol Dis 2013; 51:80-4. [DOI: 10.1016/j.bcmd.2013.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/20/2013] [Accepted: 02/23/2013] [Indexed: 10/27/2022]
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Carrocini GCDS, Zamaro PJA, Bonini-Domingos CR. What influences Hb fetal production in adulthood? Rev Bras Hematol Hemoter 2012; 33:231-6. [PMID: 23049301 PMCID: PMC3415736 DOI: 10.5581/1516-8484.20110059] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 03/22/2011] [Indexed: 11/27/2022] Open
Abstract
Human hemoglobin genes are located in α and β globin gene clusters in chromosomes 16 and 11, respectively. Different types of hemoglobin are synthesized according to the stage of development with fetal hemoglobin (α(2)γ(2)) (Hb F) being the main hemoglobin in the fetal period. After birth, there is a reduction (to about 1%) in Hb F levels and adult hemoglobin, Hb A (2α(2)β(2)), increases to more than 96% of total hemoglobin. However, some genetic conditions whether linked to the β-globin gene cluster or not are associated with high Hb F levels in adults. Among those linked to β-globin are hereditary persistence of fetal hemoglobin, delta-beta thalassemia (δβ-Thalassemia) and the XmnI polymorphism (-158 C = T). Other polymorphisms not related to β-globin gene cluster are known to influence the γ-globin gene expression in adulthood. The most relevant polymorphisms that increase concentrations of Hb F are the HMIP locus on chromosome 6, the BCL11A locus on chromosome 2, the Xp22.2 region of the X chromosome and the 8q region on chromosome 8. Findings from our research group studying genetic factors involved in γ-globin gene regulation in adults without anemia in the northwestern region of São Paulo State showed that high Hb F levels are influenced by the presence of hereditary persistence of fetal hemoglobin mutations and the XmnI polymorphism, suggesting that both genetic alterations characterize the molecular basis of the evaluated population.
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Affiliation(s)
- Gisele Cristine de Souza Carrocini
- Laboratory of Hemoglobin and Genetics of Hematologic Diseases, Universidade Estadual Paulista - UNESP/IBILCE, São José do Rio Preto, SP, Brazil
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Tantawy AAG, Andrawes NG, Ismaeil A, Kamel SA, Emam W. Prevalence of Xmnl Gγ polymorphism in Egyptian patients with β-thalassemia major. Ann Saudi Med 2012; 32:487-91. [PMID: 22871617 PMCID: PMC6080985 DOI: 10.5144/0256-4947.2012.487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND AND OBJECTIVES β-thalassemia results from a deficiency of β-globin chains leading to an excess in a globin chains resulting in hypochromic microcytic red cells, ineffective erythropoiesis and hemolytic anemia. It is a result of a decline of HbF synthesis during the first year of life. F-cell levels are influenced by a sequence variant (C->T) at position -158 upstream of the -globin gene, so the frequency of the Xmnl Gγ polymorphism in Egyptian patients with b-thalassemia major needed evaluation to decide on the value of HbF augmentation drugs in treating Egyptian b-thalessemia. DESIGN AND SETTING A cross-sectional study including 30 β-thalassemia major patients diagnosed and attending the Pediatric Hematology Unit, Children's University Hospital, Ain Shams University, Cairo, Egypt, in the period from October 2008 to October 2009. PATIENTS AND METHODS The 17 males and 13 females underwent a medical history and physical examination. Tests included a complete blood count, hemoglobin electrophoresis, serum ferritin, and detection of Xmnl Gγ polymorphism by PCR. RESULTS The mean (SD) age was [2]10.2 (6.9) years. The most frequent genotype observed was homozygosity for the absence of the site Xmnl (-/-) in 96% of cases. Heterozygosity (+/-) genotype was detected in 4% of cases, while homozygosity for the site XmnI (+/+) genotype was absent. Genotype was not related to age at first transfusion, fetal hemoglobin level or transfusion frequency. CONCLUSION Despite the small sample size, the study demonstrated that Egyptian β-thalessemia patients have low frequency of positivity for the Xmnl polymorphism whether in heterozygous (+/-) or homozygous (+/+) state.
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Affiliation(s)
- Azza A G Tantawy
- Pediatric Hematology Unit, Ain Shams University, Children's Hospital, Cairo, Egypt.
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Neishabury M, Zamani S, Azarkeivan A, Abedini SS, Darvish H, Zamani F, Najmabadi H. The modifying effect of Xmn1-HBG2 on thalassemic phenotype is associated with its linked elements in the beta globin locus control region, including the palindromic site at 5'HS4. Blood Cells Mol Dis 2011; 48:1-5. [PMID: 22036762 DOI: 10.1016/j.bcmd.2011.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 09/28/2011] [Indexed: 11/24/2022]
Abstract
The core sequence of 5'HS4-beta globin locus control region and Xmn1-HBG2 site were analyzed and compared among 86 thalassemia patients with homozygous or compound heterozygous beta globin gene mutations and 101 normal individuals. Frequency of the G allele in the polymorphic palindromic sequence of 5'HS4 (TGGGG A/G CCCCA) and positive Xmn1-HBG2 profile was significantly higher in thalassemia patients compared to the normal population. Linkage disequilibrium was observed between the G allele and positive Xmn1-HBG2 profile in patient population. Furthermore, dominance of IVSII-1 in the mutation spectrum of the patients enabled us to identify linkage disequilibrium relationships between IVSII-1, positive Xmn1-HBG2 and the G allele at 5'HS4. The frequency of milder clinical phenotype was significantly higher in patients with GG/++ than cases with AA/-- genotypic pattern in 5'HS4/Xmn1-HBG2 loci. These data together with biochemical evidence suggesting a role for the A/G polymorphism at 5'HS4 palindromic site on modifying chromatin structure and in the absence of any evidence from functional studies relating the Xmn1-HBG2 site to the increased gamma chain expression, suggest that the phenotype modifying role long time assigned to Xmn1-HBG2 is possibly played by more functionally potent elements linked to it in LCR.
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Affiliation(s)
- Maryam Neishabury
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
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Moosa MM, Ayub MI, Bashar AE, Sarwardi G, Khan W, Khan H, Yeasmin S. Combination of two rare mutations causes β-thalassaemia in a Bangladeshi patient. Genet Mol Biol 2011; 34:406-9. [PMID: 21931510 PMCID: PMC3168178 DOI: 10.1590/s1415-47572011005000026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 03/21/2011] [Indexed: 11/21/2022] Open
Abstract
Screening of mutations that cause β-thalassaemia in the Bangladeshi population led to the identification of a patient with a combination of two rare mutations, Hb Monroe and HBB: −92 C > G. The β-thalassaemia major male individual was transfusion-dependent and had an atypical β-globin gene cluster haplotype. Of the two mutations, Hb Monroe has been characterized in detail. Clinical effects of the other mutation, HBB: −92 C > G, are unknown so far. Bioinformatics analyses were carried out to predict the possible effect of this mutation. These analyses revealed the presence of a putative binding site for Egr1, a transcription factor, within the HBB: −92 region. Our literature survey suggests a close relationship between different phenotypic manifestations of β-thalassaemia and Egr1 expression.
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Affiliation(s)
- Mahdi Muhammad Moosa
- Department of Genetic Engineering & Biotechnology, University of Dhaka, Dhaka, Bangladesh
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Multiplexed genotyping of beta globin mutations with MALDI-TOF mass spectrometry. Clin Chim Acta 2011; 412:999-1002. [DOI: 10.1016/j.cca.2011.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Accepted: 02/04/2011] [Indexed: 11/20/2022]
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Analyzing 5′HS3 and 5′HS4 LCR core regions and NF-E2 in Iranian thalassemia intermedia patients with normal or carrier status for beta-globin mutations. Blood Cells Mol Dis 2011; 46:201-5. [DOI: 10.1016/j.bcmd.2010.12.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Accepted: 12/07/2010] [Indexed: 11/23/2022]
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Arab A, Karimipoor M, Rajabi A, Hamid M, Arjmandi S, Zeinali S. Molecular characterization of β-thalassemia intermedia: a report from Iran. Mol Biol Rep 2010; 38:4321-6. [PMID: 21120615 DOI: 10.1007/s11033-010-0557-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Accepted: 11/17/2010] [Indexed: 10/18/2022]
Abstract
Thalassemia intermedia is a clinical definition applied to patients whose clinical phenotype is milder than thalassemia major. To characterize different common mechanisms involving in pathogenesis of moderate to severe β-thalassemia intermedia, we have studied four factors in 38 Iranian patients with thalassemia intermedia: β-globin gene mutation, deletion in α-globin genes, presence of XmnI polymprphism and RFLP haplotype at β-globin gene cluster. The results showed that 84.4% of patients were associated with severe mutations in β-globin gene, mainly IVSII-1(G to A) (56.4%). The positive XmnI polymorphism was seen in 76.9% of the studied alleles which showed strong linkage to β° mutations and high level of fetal hemoglobin. Co-existence of α-globin gene deletions, β(+) mutation and the most frequent of RFLP haplotype (-/-, +/+, -/+, +/+, +/+, +/+, -/-) were seen in 7.7, 12.8 and 17.9%, respectively. In this group of our study it seems the main ameliorating factor in the patients was co-inheritance of a positive XmnI polymorphism with β° mutation especially IVSII-1, which were associated with increased production of fetal hemoglobin. However, the other probable genetic factors should be investigated to describe genotype-phenotype correlation in thalassemia intermedia patients.
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Affiliation(s)
- Aida Arab
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Pasteur Street, 13164 Tehran, Iran
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The XmnI Gγ polymorphism influences hemoglobin F synthesis contrary to BCL11A and HBS1L-MYB SNPs in a cohort of 57 β-thalassemia intermedia patients. Blood Cells Mol Dis 2010; 45:124-7. [DOI: 10.1016/j.bcmd.2010.04.002] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 03/30/2010] [Accepted: 03/31/2010] [Indexed: 11/23/2022]
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