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Fong C, Barreto G. Presencia de haplotipos no africanos incrementa la diversidad genética en pacientes con anemia falciforme en Colombia. ACTA BIOLÓGICA COLOMBIANA 2018. [DOI: 10.15446/abc.v23n3.69218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
El objetivo de este estudio fue identificar la frecuencia de haplotipos dentro del cluster de Beta globina presente en pacientes con anemia falciforme en Colombia, establecer la presencia de haplotipos no africanos en esta población, así como verificar variaciones en el patrón de desequilibrio de ligamiento dentro del cluster de Beta globina. Se analizaron 83 individuos con anemia falciforme, los haplotipos se formaron utilizando cinco sitios de restricción dentro del cluster de Beta globina, se estableció la frecuencia de haplotipos, se calculó el grado de desequilibrio de ligamiento entre los sitios de restricción, así como la similitud genética de esta población con otra de afectados en América. Los haplotipos más frecuentes en la población fueron Benín ( 35,1 %) y Bantú (26, 5 %), ambos africanos. Sin embargo, haplotipos presentes en poblaciones indígenas americanas y europeas alcanzaron frecuencias entre el 2 – 10 %, así como haplotipos que no han sido reportados en otras poblaciones. Los sitios de restricción presentaron bajo o nulo desequilibrio de ligamiento entre ellos. Al compararse con otras poblaciones, la población colombiana presentó mayor similitud con la población de Venezuela en donde Benin y Bantú son también predominantes. Nuestros resultados muestran que el mestizaje ha facilitado el paso de la mutación para la anemia falciforme a un contexto genético no africano (amerindio y europeo). Además, el mestizaje también ha alterado el patrón de desequilibrio de ligamiento dentro del cluster de Beta globina generando modificaciones que pueden tener influencia en estudios de asociación dentro de esta población de afectados.
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Ozturk O, Arikan S, Atalay A, Atalay EO. Estimating the age of Hb G-Coushatta [β22(B4)Glu→Ala] mutation by haplotypes of β-globin gene cluster in Denizli, Turkey. Mol Genet Genomic Med 2018; 6:547-554. [PMID: 29717566 PMCID: PMC6081228 DOI: 10.1002/mgg3.404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/16/2018] [Accepted: 04/03/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Hb G-Coushatta variant was reported from various populations' parts of the world such as Thai, Korea, Algeria, Thailand, China, Japan and Turkey. In our study, we aimed to discuss the possible historical relationships of the Hb G-Coushatta mutation with the possible migration routes of the world. For this purpose, associated haplotypes were determined using polymorphic loci in the beta globin gene cluster of hemoglobin G-Coushatta and normal populations in Denizli, Turkey. METHODS We performed statistical analysis such as haplotype analysis, Hardy-Weinberg equilibrium, measurement of genetic diversity and population differentiation parameters, analysis of molecular variance using F-statistics, historical-demographic analyses, mismatch distribution analysis of both populations and applied the test statistics in Arlequin ver. 3.5 software program. RESULTS The diversity of haplotypes has been shown to indicate different genetic origins for two populations. However, AMOVA results, molecular diversity parameters and population demographic expansion times showed that the Hb G-Coushatta mutation develops on the normal population gene pool. Our estimated τ values showed the average time since the demographic expansion for normal and Hb G-Coushatta populations ranged from approximately 42,000 to 38,000 ybp, respectively. CONCLUSION Our data suggest that Hb G-Coushatta population originate in normal population in Denizli, Turkey. These results support the hypothesis that the multiple origin of Hb G-Coushatta and indicate that mutation may have been triggered the formation of new variants on beta globin haplotypes.
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Affiliation(s)
- Onur Ozturk
- Department of BiophysicsInonu University School of MedicineMalatyaTurkey
| | - Sanem Arikan
- Department of BiophysicsPamukkale University School of MedicineDenizliTurkey
| | - Ayfer Atalay
- Department of BiophysicsPamukkale University School of MedicineDenizliTurkey
| | - Erol O. Atalay
- Department of BiophysicsPamukkale University School of MedicineDenizliTurkey
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Polimorfismos de los genes LEP, LDLR, APOA4, sus relaciones con sobrepeso, obesidad y riesgo de enfermedades crónicas en adultos del estado Sucre, Venezuela. BIOMEDICA 2015; 36:78-90. [DOI: 10.7705/biomedica.v36i1.2702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/12/2015] [Indexed: 01/05/2023]
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Luz JD, Ávila A, Icasuriaga S, Gongóra M, Castillo L, Serrón A, Kimura EM, Costa FF, Sans M, Sonati MDF. Frequency and spectrum of hemoglobinopathy mutations in a Uruguayan pediatric population. Genet Mol Biol 2013; 36:316-22. [PMID: 24130436 PMCID: PMC3795163 DOI: 10.1590/s1415-47572013005000027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 04/12/2013] [Indexed: 11/22/2022] Open
Abstract
Hemoglobinopathies are the most common recessive diseases worldwide but their prevalence in Uruguay has not been investigated. In this study, 397 unrelated outpatient children from the Pereira Rosell Hospital Center (CHPR), as well as 31 selected patients with microcytic anemia and 28 β-thalassemia carriers were analyzed for hemoglobinopathies by using biochemical and molecular biology methods. Parametric and non-parametric methods were used to compare the hematological indices between groups of genotypes. Of the 397 patients in the first group, approximately 1% (0.76% HbS and 0.25% β-thalassemia) had a mutation in the HBB gene and 3.3% had β-thalassemia. These mutations had a heterogeneous distribution that varied according to individual ancestry. HbS was found exclusively in individuals with declared African ancestry and had a carrier frequency of 2.2%. The frequency of α-thalassemia carriers in outpatients of European and African ancestry was 1.2% and 6.5%, respectively. In contrast, the frequency of α-thalassemia carriers in patients with microcytic anemia was 25.8%, significantly higher (p < 0.01) than that observed in the sample as a whole and in Afro-descendants and Euro-descendants. Significant differences were observed in the hematological parameters between individuals with thalassemia genotypes and those with a normal genotype. These results indicate that hemoglobinopathies are a relevant health problem in Uruguay.
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Affiliation(s)
- Julio Da Luz
- Departamento de Genética, Facultad de Medicina, Universidad de la República, Montevideo,
Uruguay
| | - Amalia Ávila
- Departamento de Genética, Facultad de Medicina, Universidad de la República, Montevideo,
Uruguay
| | - Sandra Icasuriaga
- Departamento de Laboratorio Clínico, Centro Hospitalario Pereira Rosell, Montevideo,
Uruguay
| | - María Gongóra
- Servicio de Hemato-Oncología Pediátrica, Centro Hospitalario Pereira Rosell, Montevideo,
Uruguay
| | - Luis Castillo
- Servicio de Hemato-Oncología Pediátrica, Centro Hospitalario Pereira Rosell, Montevideo,
Uruguay
| | - Alejandra Serrón
- Departamento de Genética, Facultad de Medicina, Universidad de la República, Montevideo,
Uruguay
| | - Elza Miyuki Kimura
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, SP,
Brazil
| | - Fernando Ferreira Costa
- Hemocentro, Faculdade de Ciências Médicas, Universidad Estadual de Campinas, Campinas, SP,
Brazil
| | - Mónica Sans
- Departmento de Antropología Biológica, Facultad de Humanidades y Ciencias de la Educación, Universidad de la República, Montevideo,
Uruguay
| | - Maria de Fátima Sonati
- Departamento de Patologia Clínica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, SP,
Brazil
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Guerra DCD, Pérez CF, Izaguirre MH, Barahona EA, Larralde AR, Lugo MVD. Gender Differences in Ancestral Contribution and Admixture in Venezuelan Populations. Hum Biol 2011; 83:345-61. [DOI: 10.3378/027.083.0302] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Rusanova I, Cossio G, Moreno B, Javier Perea F, De Borace RG, Perea M, Escames G, Acuña-Castroviejo D. β-globin gene cluster haplotypes in sickle cell patients from Panamá. Am J Hum Biol 2011; 23:377-80. [DOI: 10.1002/ajhb.21148] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 12/13/2010] [Accepted: 12/15/2010] [Indexed: 11/08/2022] Open
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Da Luz J, Kimura EM, Costa FF, Sonati MDF, Sans M. Beta-globin gene cluster haplotypes in Afro-Uruguayans from two geographical regions (South and North). Am J Hum Biol 2010; 22:124-8. [PMID: 19533614 DOI: 10.1002/ajhb.20961] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The beta-globin gene cluster haplotypes were identified in 52 and 40 chromosomes from two Afro-Uruguayan populations located in the South and North of the country, respectively. In both regions, the 5' haplotype 2 (+ - - - -), characteristic of non-African populations, was the most frequent, reflecting a strong process of admixture in Afro-Uruguayans (0.355 and 0.262, respectively). The haplotypes 3 (- - - - +) and 4 (- + - - +), characteristics of African sub-Saharan populations, present inverse frequencies in North and South: whereas in the South haplotype 3 is the second most frequent (0.232), and haplotype 4 presents a low frequency (0.019), in the North haplotype 4 is the third most frequent (0.140), and haplotype 3 only reaches an intermediate frequency (0.088). The pairwise F(ST) and the exact test of differentiation show genetic heterogeneity between both regions. Nei's genetic distance show that South and North present affinities with Bantu groups, although the North present the smallest genetic distance with the Mandenka, a Senegalese population. With respect to 3' haplotypes, haplotype I was the most frequent in both populations, followed by haplotype II, characteristic of sub-Saharan Africans. The high frequencies of haplotype III-Asian could indicate admixture with Native American populations. The differences observed between both Uruguayan regions could be explained by microevolutionary events as genetic drift, founder effects, differential admixture, and/or distinct origin of the African slaves introduced in those regions.
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Affiliation(s)
- Julio Da Luz
- Departamento de Genética, Universidad de la República, Montevideo, Uruguay
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Adorno EV, Zanette A, Lyra I, Souza CC, Santos LF, Menezes JF, Dupuit MF, Almeida MNT, Reis MG, Gonçalves MS. The β‐Globin Gene Cluster Haplotypes in Sickle Cell Anemia Patients from Northeast Brazil: A Clinical and Molecular View. Hemoglobin 2009; 28:267-71. [PMID: 15481897 DOI: 10.1081/hem-120040310] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The beta(S)-globin haplotypes were studied in 78 sickle cell Brazilian patients from Bahia, Northeast Brazil, that has a large population of African origin. Hemoglobin (Hb) profiles were developed by high-performance liquid chromatography (HPLC), and beta(S)-globin gene haplotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) techniques. We identified 44 (55.0%) patients with the CAR/Ben (Central African Republic/Benin) genotype, 16 (20.0%) Ben/Ben, 13 (16.2%) CAR/CAR and seven (8.8%) with other genotypes. Analyses of the phenotypes showed clinical differences related only to Hb F levels and blood transfusion therapy; the presence of -alpha(-3.7)-thalassemia (thal) demonstrated statistical significance when associated with hematocrit (p=0.044), MCV (p=0.0007), MCH (p=0.012) and spleen sequestration events. The haplotype diversity found in the present study can be justified by information about the origin of the slave traffic period in Bahia during the 19th century. The specific characteristics described among the Bahian sickle cell patients could be confirmed by increasing the number of patients with specific genotypes and further studies of genetic markers.
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Affiliation(s)
- Elisângela Vitória Adorno
- Laboratório de Patologia e Biologia Molecular, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador-Bahia, Brazil
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Adorno EV, Zanette Â, Lyra I, Seixas MO, Reis MG, Gonçalves MS. Clinical and molecular characteristics of sickle cell anemia in the northeast of Brazil. Genet Mol Biol 2008. [DOI: 10.1590/s1415-47572008000400003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | - Ângela Zanette
- Fundação de Hematologia e Hemoterapia do Estado da Bahia, Brazil
| | - Isa Lyra
- Fundação de Hematologia e Hemoterapia do Estado da Bahia, Brazil
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Mohammed AO, Attalla B, Bashir FMK, Ahmed FE, El Hassan AM, Ibnauf G, Jiang W, Cavalli-Sforza LL, Karrar ZAA, Ibrahim ME. Relationship of the sickle cell gene to the ethnic and geographic groups populating the Sudan. Public Health Genomics 2006; 9:113-20. [PMID: 16612062 DOI: 10.1159/000091489] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The presence of a geographical pattern in the distribution of the sickle cell gene (S gene) and its association with malaria is well documented. To study the distribution of the S gene among various ethnic and linguistic groups in the Sudan we analyzed a hospital-based sample of 189 sickle cell anemia (SCA) patients who reported to the Khartoum Teaching Hospital between June 1996 and March 2000 and 118 controls with other complaints, against their ethnic and linguistic affiliations and geographic origin. Electrophoresis for hemoglobin S and sickling tests were carried out on all patients and controls as a prerequisite for inclusion. The majority of patients (93.7%) belonged to families of single ethnic descent, indicating the high degree of within-group marriages and thus the higher risk of augmenting the gene. SCA was found to be predominant among the Afro-Asiatic-speaking groups (68.4%) including nomadic groups of Arab and non- Arab descent that migrated to the Sudan in various historical epochs. Those patients clustered in western Sudan (Kordofan and Darfur) from where 73% of all cases originate. The proportion of patients reporting from other geographic areas like the south (3.1%), which is primarily inhabited by Nilo-Saharan-speaking groups (19% of the whole sample) who populated the country in previous times, is disproportionate to their total population in the country (chi(2) = 71.6; p = 0.0001). Analysis of the haplotypes associated with the S gene indicated that the most abundant haplotypes are the Cameroon, Benin, Bantu and Senegal haplotypes, respectively. No relationship was seen between haplotypes and the various hematological parameters in the sub-sample analyzed for such association. These results provide an insight into the distribution of the sickle cell gene in the Sudan, and highlight the strong link of the middle Nile Valley with West Africa through the open plateau of the Sahel and the nomadic cattle herders and also probably the relatively young age of the S gene.
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Affiliation(s)
- Abdelrahim O Mohammed
- Department of Biochemistry, Faculty of Medicine University of Khartoum, Khartoum, Sudan.
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Luz JAD, Sans M, Kimura EM, Albuquerque DM, Sonati MDF, Costa FF. alpha-thalassemia, HbS, and beta-globin gene cluster haplotypes in two Afro-Uruguayan sub-populations from northern and southern Uruguay. Genet Mol Biol 2006. [DOI: 10.1590/s1415-47572006000400002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Lemos Cardoso G, Farias Guerreiro J. African gene flow to north Brazil as revealed by HBB*S gene haplotype analysis. Am J Hum Biol 2005; 18:93-8. [PMID: 16378338 DOI: 10.1002/ajhb.20467] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Haplotypes linked to the HBB*S gene were analyzed in a sample of 260 chromosomes of Brazilian sickle cell anemia patients from the population of Belém, state of Pará, to evaluate if the present-day haplotype frequencies correlate as well as expected with historical information on the geographic origin of African slaves sent directly to Northern Brazil. The HBB*S gene haplotype distribution (66% Bantu, 21.8% Benin, 10.9% Senegal, and 1.3% Cameroon) is in agreement with those observed for other Brazilian populations regarding the highest proportion of the Bantu type, followed by the Benin type, but it differs significantly concerning the Senegal type as this haplotype is rare or absent in samples from other Brazilian regions already studied. In addition, our results are in accordance with historical records that establish that about 90% of the slaves sent to Northern Brazil were from Angola, Congo, and Mozambique, where the Bantu haplotype predominates, in contrast to 10% of slaves from Senegambia, Guine-Bissau, and Cape Verde, where the Senegal haplotype is the most common. On the other hand, the observed frequency of the Benin haplotype in Belém was much higher than that expected by historical data. This fact corroborates the suggestion that the high prevalence of the Benin type in Belém is due to domestic slave trade and later internal migrations, mainly from the Northeast, since there are no historical records of direct slave trade from Central West Africa to North Brazil.
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Affiliation(s)
- Greice Lemos Cardoso
- Laboratory of Human and Medical Genetics, Department of Pathology, Center for Biological Sciences, Federal University of Pará, Belém, Pará, Brazil
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