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Díaz-Matallana M, Briceño I, Benavides-Benítez E, Bernal JE, Martínez-Lozano JC. Molecular characterisation of sickle cell disease and classification of major haplotypes associated with the β-globin cluster (HBB gene) by means of SNP marker sequencing in a group of samples from Bolívar, Colombia. Ann Hum Biol 2024; 51:2308714. [PMID: 38378484 DOI: 10.1080/03014460.2024.2308714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/08/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Colombia has a mestizo population and the prevalence of haemoglobin variants varies according to each region, but heterozygous carriers can be found in all of them. AIM To characterise sickle cell disease (SCD) haematologically, biochemically, and molecularly, and detect classic haplotypes by DNA sequencing in a group of samples from Bolívar, Colombia. SUBJECTS AND METHODS Blood samples were collected after informed consent from volunteers from eight communities in the Bolívar department, plus samples from the Pacific region, Providencia Island, and Bogotá were included. Data were obtained from: (1) haematological analyses; (2) biochemical tests: dHPLC was used to determine haemoglobin (Hb); and (3) DNA sequencing data through five SNPs. RESULTS 101 samples were identified by rs334 through Sanger's Sequencing, structural haemoglobinopathies HbAS (34.65%), HbSS (2.97%) and HbAC (1.98%) were found. When contrasting the Hb identification results between SNP rs334 Vs. dHPLC/Isoelectric Focusing (IEF), a coincidence was found in 39/43 samples analysed, therefore, when comparing these techniques, a significant correlation was found (Pearson's correlation coefficient r = 0.998). 26 samples previously analysed by rs334 were classified into classical haplotypes CAR (50.0%), BEN (30.76%), CAM (7.69%), SEN (3.84%), and ATP-I (7.69%). CONCLUSIONS SCD characterisation and SNPs-based classification through Sanger's DNA sequencing have not been performed before in Colombia. The results of this work will make it possible to expand the data or records of carriers and those affected, which will benefit patients and their families.
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Affiliation(s)
- Marcela Díaz-Matallana
- Faculty of Medicine, Human Genetics Laboratory, Universidad de La Sabana, Chía, Colombia
| | - Ignacio Briceño
- Faculty of Medicine, Human Genetics Laboratory, Universidad de La Sabana, Chía, Colombia
| | | | - Jaime E Bernal
- Medicine Program, Universidad del Sinú Elías Bechara Zainúm, Cartagena, Colombia
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Perdomo VA, Ortega DC, Barreto G. Polymorphisms of apolipoprotein E in the Afro-descendant population of Buenaventura, Colombia. REVISTA COLOMBIANA DE PSIQUIATRIA (ENGLISH ED.) 2022; 51:99-104. [PMID: 35803688 DOI: 10.1016/j.rcpeng.2020.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 10/05/2020] [Indexed: 06/15/2023]
Abstract
OBJETIVES To estimate the frequency distribution, both allelic and genotypic, of the APOE gene in the Afro-descendant population of Buenaventura, Colombia. METHODS Three hundred and forty-eight Afro-descendant individuals were analysed and the APOE locus was genotyped by PCR-RFLP. The allelic and genotypic frequencies were established by direct counting and the Hardy-Weinberg equilibrium was evaluated through χ2 test. The frequencies obtained in this study were compared with frequencies reported for other Colombian populations through the Fisher's exact test. RESULTS The following allelic frequencies were observed: E3, 70.8%; E4, 21.4%, and E2, 7.8%. The genotypic frequencies were: E3/E3, 51.1%; E3/E4, 27.3%; E2/E3, 12.1%; E4/E4, 6%; E2/E4, 3.5%, and E2/E2, 0%. The entire examined population was found in Hardy-Weinberg equilibrium (P=.074), and significant differences were found in the allele E4 when comparing this population with the Amerindian and mestizo populations of Bogotá, Quindío, Centro-Oriente, Valle del Cauca, Barranquilla and Medellín (P≤ 0.0345). CONCLUSIONS The allelic frequencies observed in this study were significantly different from the frequencies reported in other Colombian populations. The high representativeness of the E4 and E2 alleles validates the hypothesis that there are micro-evolutionary processes that have been acting on their frequencies and could be associated with susceptibility to neuropsychiatric diseases such as Alzheimer's disease, metabolic alterations of fats and/or coronary artery disease.
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Affiliation(s)
- Vivian Andrea Perdomo
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia
| | - Diana Carolina Ortega
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia
| | - Guillermo Barreto
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia.
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Perdomo VA, Ortega DC, Barreto G. Polymorphisms of apolipoprotein E in the Afro-descendant population of Buenaventura, Colombia. REVISTA COLOMBIANA DE PSIQUIATRIA (ENGLISH ED.) 2020; 51:S0034-7450(20)30091-3. [PMID: 33735031 DOI: 10.1016/j.rcp.2020.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 10/05/2020] [Indexed: 06/12/2023]
Abstract
OBJETIVES To estimate the frequency distribution, both allelic and genotypic, of the APOE gene in the Afro-descendant population of Buenaventura, Colombia. METHODS Three hundred and forty-eight Afro-descendant individuals were analysed and the APOE locus was genotyped by PCR-RFLP. The allelic and genotypic frequencies were established by direct counting and the Hardy-Weinberg equilibrium was evaluated through χ2 test. The frequencies obtained in this study were compared with frequencies reported for other Colombian populations through the Fisher's exact test. RESULTS The following allelic frequencies were observed: E3, 70.8%; E4, 21.4%, and E2, 7.8%. The genotypic frequencies were: E3/E3, 51.1%; E3/E4, 27.3%; E2/E3, 12.1%; E4/E4, 6%; E2/E4, 3.5%, and E2/E2, 0%. The entire examined population was found in Hardy-Weinberg equilibrium (P=.074), and significant differences were found in the allele E4 when comparing this population with the Amerindian and mestizo populations of Bogotá, Quindío, Centro-Oriente, Valle del Cauca, Barranquilla and Medellín (P≤ 0.0345). CONCLUSIONS The allelic frequencies observed in this study were significantly different from the frequencies reported in other Colombian populations. The high representativeness of the E4 and E2 alleles validates the hypothesis that there are micro-evolutionary processes that have been acting on their frequencies and could be associated with susceptibility to neuropsychiatric diseases such as Alzheimer's disease, metabolic alterations of fats and/or coronary artery disease.
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Affiliation(s)
- Vivian Andrea Perdomo
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia
| | - Diana Carolina Ortega
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia
| | - Guillermo Barreto
- Grupo de Genética Molecular Humana, Departamento de Biología, Universidad del Valle, Cali, Colombia.
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Isokpehi RD, Johnson CP, Tucker AN, Gautam A, Brooks TJ, Johnson MO, Cozart T, Wathington DJ. Integrating Datasets on Public Health and Clinical Aspects of Sickle Cell Disease for Effective Community-Based Research and Practice. Diseases 2020; 8:E39. [PMID: 33114600 PMCID: PMC7709136 DOI: 10.3390/diseases8040039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/11/2020] [Accepted: 10/20/2020] [Indexed: 11/22/2022] Open
Abstract
Sickle cell disease (SCD) is a genetic disease that has multiple aspects including public health and clinical aspects. The goals of the research study were to (1) understand the public health aspects of sickle cell disease, and (2) understand the overlap between public health aspects and clinical aspects that can inform research and practice beneficial to stakeholders in sickle cell disease management. The approach involved the construction of datasets from textual data sources produced by experts on sickle cell disease including from landmark publications published in 2020 on sickle cell disease in the United States. The interactive analytics of the integrated datasets that we produced identified that community-based approaches are common to both public health and clinical aspects of sickle cell disease. An interactive visualization that we produced can aid the understanding of the alignment of governmental organizations to recommendations for addressing sickle cell disease in the United States. From a global perspective, the interactive analytics of the integrated datasets can support the knowledge transfer stage of the SICKLE recommendations (Skills transfer, Increasing self-efficacy, Coordination, Knowledge transfer, Linking to adult services, and Evaluating readiness) for effective pediatric to adult transition care for patients with sickle cell disease. Considering the increased digital transformations resulting from the COVID-19 pandemic, the constructed datasets from expert recommendations can be integrated within remote digital platforms that expand access to care for individuals living with sickle cell disease. Finally, the interactive analytics of integrated expert recommendations on sickle cell disease management can support individual and team expertise for effective community-based research and practice.
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Affiliation(s)
- Raphael D. Isokpehi
- Center for Trans-Disciplinary Data Analytics, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (A.N.T.); (A.G.); (T.J.B.)
| | - Chomel P. Johnson
- Master of Public Health Program, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (C.P.J.); (M.O.J.); (T.C.); (D.J.W.)
- Health Equity Internship Program, Association of State Public Health Nutritionists, P.O. Box 37094, Tucson, AZ 85740, USA
| | - Ashley N. Tucker
- Center for Trans-Disciplinary Data Analytics, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (A.N.T.); (A.G.); (T.J.B.)
| | - Aakriti Gautam
- Center for Trans-Disciplinary Data Analytics, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (A.N.T.); (A.G.); (T.J.B.)
| | - Taylor J. Brooks
- Center for Trans-Disciplinary Data Analytics, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (A.N.T.); (A.G.); (T.J.B.)
| | - Matilda O. Johnson
- Master of Public Health Program, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (C.P.J.); (M.O.J.); (T.C.); (D.J.W.)
- Health Equity Internship Program, Association of State Public Health Nutritionists, P.O. Box 37094, Tucson, AZ 85740, USA
| | - Thometta Cozart
- Master of Public Health Program, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (C.P.J.); (M.O.J.); (T.C.); (D.J.W.)
- Health Equity Internship Program, Association of State Public Health Nutritionists, P.O. Box 37094, Tucson, AZ 85740, USA
- Department of Public Health and Health Equity, Bethune-Cookman University, Daytona Beach, FL 32114, USA
| | - Deanna J. Wathington
- Master of Public Health Program, Bethune-Cookman University, Daytona Beach, FL 32114, USA; (C.P.J.); (M.O.J.); (T.C.); (D.J.W.)
- Department of Public Health and Health Equity, Bethune-Cookman University, Daytona Beach, FL 32114, USA
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Fong C, Mendoza Y, Barreto G. Genetic variants in the G gamma-globin promoter modulate fetal hemoglobin expression in the Colombian population. Genet Mol Biol 2020; 43:e20190076. [PMID: 32325484 PMCID: PMC7210980 DOI: 10.1590/1678-4685-gmb-2019-0076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 11/28/2019] [Indexed: 11/23/2022] Open
Abstract
Fetal hemoglobin (HbF) is a determining factor for the development of sickle cell anemia. High HbF levels lower the intensity of symptoms of this disease. HbF levels can vary in patients with sickle cell anemia and individuals without the disease. The purpose of this study was to identify the genetic variants in the G gamma-globin gene promoter that can modulate HbF expression in patients with sickle cell anemia and healthy individuals from Colombia. In total, 413 bp of the G gamma-globin gene promoter were sequenced in 60 patients with sickle cell anemia and 113 healthy individuals. The allelic and genotype frequencies of the identified variants were compared between individuals with low and high HbF for both patients and healthy individuals. In total, we identified 15 variants in both groups, only three of which were shared between patients and healthy individuals. In healthy individuals, sites -16 and -309 (rs112479156) exhibited differences in allele frequencies. The mutant allele of -16 lowered the production of HbF, whereas the mutant allele of -309 increased its production. These results reveal the presence of different mechanisms of HbF regulation between patients with sickle cell and healthy individuals.
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Affiliation(s)
- Cristian Fong
- GIOD Group, Faculty of Dentistry, Universidad Cooperativa de Colombia, Pasto, Nariño, Colombia
| | - Yesica Mendoza
- Human Molecular Genetics Group, Biology Department, Universidad del Valle, Cali, Valle del Cauca, Colombia
| | - Guillermo Barreto
- Human Molecular Genetics Group, Biology Department, Universidad del Valle, Cali, Valle del Cauca, Colombia
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Yahouédéhou SCMA, da Guarda CC, Figueiredo CVB, Santiago RP, Carvalho SP, Fiuza LM, Ndidi US, Oliveira RM, Carvalho MOS, Nascimento VML, Rocha LC, Lyra IM, Adorno EV, Goncalves MS. Hydroxyurea alters hematological, biochemical and inflammatory biomarkers in Brazilian children with SCA: Investigating associations with βS haplotype and α-thalassemia. PLoS One 2019; 14:e0218040. [PMID: 31306416 PMCID: PMC6629070 DOI: 10.1371/journal.pone.0218040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 05/24/2019] [Indexed: 12/13/2022] Open
Abstract
This study investigated the effects of hydroxyurea (HU) on hematological, biochemical and inflammatory parameters in children with sickle cell anemia (SCA) in association with βS haplotype and α-thalassemia. We included 22 children with SCA who were followed for an average of 14.5 months. Laboratory parameters were assessed by electronic methods, and molecular analysis was investigated by PCR-RFLP and allele-specific PCR. Results showed significant increases in hemoglobin, HbF, hematocrit, MCV, MCH, glucose, HDL-C and albumin levels, as well as significant decreases in MCHC and AST levels, WBC, neutrophils, eosinophils, lymphocytes and reticulocytes, in children during HU therapy. HbF levels were positively correlated with hemoglobin, hematocrit, MCV and total protein, yet negatively correlated with MCHC, RDW, AAT and AST during HU therapy (p<0.05). Children who carried the Central African Republic haplotype, in response to HU therapy, presented significant increases in hemoglobin, hematocrit, triglycerides and uric acid levels, as well as significant decreases in MCHC, AST and direct bilirubin levels, WBC, neutrophils, eosinophils, lymphocytes and reticulocytes. Those with the Benin haplotype presented increases in HbF and albumin levels, and a reduction in platelet counts (p<0.05). Children with α-thalassemia presented decreased ALT during HU use, while those without this deletion presented increases in hemoglobin, hematocrit, MCV, MCH, HDL-C and albumin, as well as decreases in MCHC, neutrophils, lymphocytes, reticulocytes and AST (p<0.05). Hence, regardless of its use in association with βS haplotypes or α-thalassemia, HU seems to be linked to alterations in hemolytic, inflammatory, hepatic, lipid and glycemic profiles.
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Affiliation(s)
- Sètondji Cocou Modeste Alexandre Yahouédéhou
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Caroline Conceição da Guarda
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Camylla Vilas Boas Figueiredo
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Rayra Pereira Santiago
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Suellen Pinheiro Carvalho
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Luciana Magalhães Fiuza
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | | | - Rodrigo Mota Oliveira
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | | | | | | | - Isa Menezes Lyra
- Fundação de Hematologia e Hemoterapia da Bahia, Salvador, Bahia, Brasil
| | - Elisângela Vitória Adorno
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
| | - Marilda Souza Goncalves
- Laboratório de Investigação em Genética e Hematologia Translacional, Instituto Gonçalo Moniz, Salvador, Bahia, Brasil
- Laboratório de Pesquisa em Anemia, Departamento de Análises Clínicas, Faculdade de Farmácia, Universidade Federal da Bahia, Salvador, Bahia, Brasil
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Knight-Madden J, Lee K, Elana G, Elenga N, Marcheco-Teruel B, Keshi N, Etienne-Julan M, King L, Asnani M, Romana M, Hardy-Dessources MD. Newborn Screening for Sickle Cell Disease in the Caribbean: An Update of the Present Situation and of the Disease Prevalence. Int J Neonatal Screen 2019; 5:5. [PMID: 33072965 PMCID: PMC7510201 DOI: 10.3390/ijns5010005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/01/2019] [Indexed: 01/16/2023] Open
Abstract
The region surrounding the Caribbean Sea is predominantly composed of island nations for its Eastern part and the American continental coast on its Western part. A large proportion of the population, particularly in the Caribbean islands, traces its ancestry to Africa as a consequence of the Atlantic slave trade during the XVI-XVIII centuries. As a result, sickle cell disease has been largely introduced in the region. Some Caribbean countries and/or territories, such as Jamaica and the French territories, initiated newborn screening (NBS) programs for sickle cell disease more than 20 years ago. They have demonstrated the major beneficial impact on mortality and morbidity resulting from early childhood care. However, similar programs have not been implemented in much of the region. This paper presents an update of the existing NBS programs and the prevalence of sickle cell disease in the Caribbean. It demonstrates the impact of the Caribbean Network of Researchers on Sickle Cell Disease and Thalassemia (CAREST) on the extension of these programs. The presented data illustrate the importance of advocacy in convincing policy makers of the feasibility and benefit of NBS for sickle cell disease when coupled to early care.
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Affiliation(s)
- Jennifer Knight-Madden
- Caribbean Institute for Health Research—Sickle Cell Unit, The University of the West Indies, Mona, Kingston 7, Jamaica
| | - Ketty Lee
- Laboratory of Molecular Genetics, Academic Hospital of Guadeloupe, 97159 Pointe-à-Pitre, Guadeloupe
| | - Gisèle Elana
- Referral Center for Sickle Cell Disease, Department of Pediatrics, Academic Hospital of Martinique, 97261 Fort de France, Martinique, France
| | - Narcisse Elenga
- Referral Center for Sickle Cell Disease, Department of Pediatric Medicine and Surgery, Andrée Rosemon General Hospital, 97306 Cayenne, French Guiana, France
| | | | - Ngozi Keshi
- Paediatric Department, Scarborough General Hospital, 00000 Scarborough, Tobago
| | - Maryse Etienne-Julan
- Referral Center for Sickle Cell Disease, Sickle Cell Unit, Academic Hospital of Guadeloupe, 97159 Pointe-à-Pitre, Guadeloupe, France
| | - Lesley King
- Caribbean Institute for Health Research—Sickle Cell Unit, The University of the West Indies, Mona, Kingston 7, Jamaica
| | - Monika Asnani
- Caribbean Institute for Health Research—Sickle Cell Unit, The University of the West Indies, Mona, Kingston 7, Jamaica
| | - Marc Romana
- UMR Inserm 1134 Biologie Intégrée du Globule Rouge, Inserm/Université Paris Diderot—Université Sorbonne Paris Cité/INTS/Université des Antilles, Hôpital Ricou, Academic Hospital of Guadeloupe, 97159 Pointe-à-Pitre, Guadeloupe
- Laboratoire d’Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, 75015 Paris, France
| | - Marie-Dominique Hardy-Dessources
- UMR Inserm 1134 Biologie Intégrée du Globule Rouge, Inserm/Université Paris Diderot—Université Sorbonne Paris Cité/INTS/Université des Antilles, Hôpital Ricou, Academic Hospital of Guadeloupe, 97159 Pointe-à-Pitre, Guadeloupe
- Laboratoire d’Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, 75015 Paris, France
- CAribbean Network of REsearchers on Sickle Cell Disease and Thalassemia, UMR Inserm 1134, Hôpital Ricou, Academic Hospital of Guadeloupe, 97159 Pointe-à-Pitre, Guadeloupe
- Correspondence: ; Tel.: (+590)-590-83-48-99
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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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Aloni MN, Ngiyulu RM, Nsibu CN, Ekulu PM, Makulo JR, Gini‐Ehungu J, Nseka NM, Lepira FB. Congolese children with sickle cell trait may exhibit glomerular hyperfiltration: A case control study. J Clin Lab Anal 2017; 31:e22143. [PMID: 28102613 PMCID: PMC6817090 DOI: 10.1002/jcla.22143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 12/18/2016] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The prevalence of sickle cell trait is extremely high in sub-Saharan Africa. Recent studies have reported the impact of sickle cell carriers on renal function. However, data on renal abnormalities in children with sickle cell trait in this part of the world are unknown. In this report, we assess the glomerular function of children with sickle cell trait (SCT). METHODS A case control study was conducted to assess the glomerular function in 43 Congolese children with sickle cell trait (Hb-AS) matched for age to 65 children with sickle cell anemia in steady state (Hb-SS) and 67 normal controls (Hb-AA). RESULTS There was a significant difference in the blood pressure levels between the Hb-AS group vs Hb-SS group (P<.05). The estimated glomerular filtration rate (eGFR) corrected for body surface area was increased in Hb-AS group compared to Hb-AA group, but there was no significant difference between the two groups (P=.48). At the same time, the eGFR was decreased, but no significantly so, in the Hb-AS group compared to the Hb-SS group (P=.19). The proportion of children with Hb-AS (16.3%) who had hyperfiltration was higher compared to the proportion (6.1%) found in the Hb-AA group, but lower compared to the proportion found in the Hb-SS group (30%). However, in both situations, the difference was not statistically significant. No case of proteinuria was detected in children with Hb-AS. CONCLUSION It appears that at least one of six children with SCT had hyperfiltration. The findings could form a basis for further studies on this renal physiology among SCT individuals in Africa.
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Affiliation(s)
- Michel Ntetani Aloni
- Division of Hemato‐oncology and nephrologyDepartment of PaediatricsSchool of MedicineUniversity Hospital of KinshasaUniversity of KinshasaKinshasaCongo
| | - René Makwala Ngiyulu
- Division of Hemato‐oncology and nephrologyDepartment of PaediatricsSchool of MedicineUniversity Hospital of KinshasaUniversity of KinshasaKinshasaCongo
| | - Célestin Ndosimao Nsibu
- Intensive Care DivisionDepartment of PaediatricsSchool of MedicineUniversity Hospital of KinshasaUniversity of KinshasaKinshasaCongo
| | - Pépé Mfutu Ekulu
- Division of Hemato‐oncology and nephrologyDepartment of PaediatricsSchool of MedicineUniversity Hospital of KinshasaUniversity of KinshasaKinshasaCongo
| | - Jean Robert Makulo
- Division of Nephrology and DialysisDepartment of Internal MedicineSchool of MedicineUniversity Hospital of KinshasaKinshasaCongo
| | - Jean‐Lambert Gini‐Ehungu
- Division of Hemato‐oncology and nephrologyDepartment of PaediatricsSchool of MedicineUniversity Hospital of KinshasaUniversity of KinshasaKinshasaCongo
| | - Nazaire Mangani Nseka
- Division of Nephrology and DialysisDepartment of Internal MedicineSchool of MedicineUniversity Hospital of KinshasaKinshasaCongo
| | - François Bompeka Lepira
- Division of Nephrology and DialysisDepartment of Internal MedicineSchool of MedicineUniversity Hospital of KinshasaKinshasaCongo
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Arzuza-Ortega L, Polo A, Pérez-Tatis G, López-García H, Parra E, Pardo-Herrera LC, Rico-Turca AM, Villamil-Gómez W, Rodríguez-Morales AJ. Fatal Sickle Cell Disease and Zika Virus Infection in Girl from Colombia. Emerg Infect Dis 2016; 22:925-7. [PMID: 27089120 PMCID: PMC4861530 DOI: 10.3201/eid2205.151934] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Lindenau JD, Wagner SC, Castro SMD, Hutz MH. The effects of old and recent migration waves in the distribution of HBB*S globin gene haplotypes. Genet Mol Biol 2016; 39:515-523. [PMID: 27706371 PMCID: PMC5127156 DOI: 10.1590/1678-4685-gmb-2016-0032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/13/2016] [Indexed: 01/01/2023] Open
Abstract
Sickle cell hemoglobin is the result of a mutation at the sixth amino acid position of the beta (β) globin chain. The HBB*S gene is in linkage disequilibrium with five main haplotypes in the β-globin-like gene cluster named according to their ethnic and geographic origins: Bantu (CAR), Benin (BEN), Senegal (SEN), Cameroon (CAM) and Arabian-Indian (ARAB). These haplotypes demonstrated that the sickle cell mutation arose independently at least five times in human history. The distribution of βS haplotypes among Brazilian populations showed a predominance of the CAR haplotype. American populations were clustered in two groups defined by CAR or BEN haplotype frequencies. This scenario is compatible with historical records about the slave trade in the Americas. When all world populations where the sickle cell gene occurs were analyzed, three clusters were disclosed based on CAR, BEN or ARAB haplotype predominance. These patterns may change in the next decades due to recent migrations waves. Since these haplotypes show different clinical characteristics, these recent migrations events raise the necessity to develop optimized public health programs for sickle cell disease screening and management.
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Affiliation(s)
- Juliana D Lindenau
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Simone M de Castro
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mara H Hutz
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Bitoungui VJN, Pule GD, Hanchard N, Ngogang J, Wonkam A. Beta-globin gene haplotypes among cameroonians and review of the global distribution: is there a case for a single sickle mutation origin in Africa? OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2015; 19:171-9. [PMID: 25748438 DOI: 10.1089/omi.2014.0134] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Studies of hemoglobin S haplotypes in African subpopulations have potential implications for patient care and our understanding of genetic factors that have shaped the prevalence of sickle cell disease (SCD). We evaluated HBB gene cluster haplotypes in SCD patients from Cameroon, and reviewed the literature for a global distribution. We reviewed medical records to obtain pertinent socio-demographic and clinical features for 610 Cameroonian SCD patients, including hemoglobin electrophoresis and full blood counts. RFLP-PCR was used to determine the HBB gene haplotype on 1082 chromosomes. A systematic review of the current literature was undertaken to catalogue HBB haplotype frequencies in SCD populations around the world. Benin (74%; n = 799) and Cameroon (19%; n = 207) were the most prevalent haplotypes observed among Cameroonian patients. There was no significant association between HBB haplotypes and clinical life events, anthropometric measures, hematological parameters, or fetal hemoglobin (HbF) levels. The literature review of the global haplotype distributions was consistent with known historical migrations of the people of Africa. Previously reported data from Sudan showed a distinctly unusual pattern; all four classical haplotypes were reported, with an exceptionally high proportion of the Senegal, Cameroon, and atypical haplotypes. We did not observe any significant associations between HBB haplotype and SCD disease course in this cohort. Taken together, the data from Cameroon and from the wider literature suggest that a careful reassessment of African HBB haplotypes may shed further light on the evolutionary dynamics of the sickle allele, which could suggest a single origin of the sickle mutation.
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Affiliation(s)
- Valentina J Ngo Bitoungui
- 1 Department of Microbiology, Parasitology, and Hematology, Faculty of Medicine and Biomedical Sciences, University of Yaoundé , Yaoundé, Cameroon
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