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Santos GPD, Rabi LT, Bezerra AA, da Cunha MR, Iatecola A, Fernandes VAR. Transcriptional regulators of fetal hemoglobin. Hematol Transfus Cell Ther 2024:S2531-1379(24)00296-7. [PMID: 39237431 DOI: 10.1016/j.htct.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 06/25/2024] [Accepted: 06/25/2024] [Indexed: 09/07/2024] Open
Abstract
Sickle cell anemia is a hereditary disease caused by sickle-shaped red blood cells that can lead to vaso-occlusive crises. Treatment options are currently limited, highlighting the need to develop new clinical approaches. Studies demonstrated that elevated levels of fetal hemoglobin (Hb F) are associated with a reduction of mortality and morbidity in sickle cell anemia patients. In light of this, researchers have been trying to elucidate the transcriptional regulation of Hb F to develop new therapeutic interventions. The present study aimed to present the main transcription factors of Hb F and discuss the clinical feasibility of these molecular targets. Two search strategies were used in the PubMed, SciELO, and LILACS databases between July and August 2023 to conduct this review. Manual searches were also conducted by checking references of potentially eligible studies. Eligibility criteria consisted of clinical trials and cohort studies from the last five years that investigated transcription factors associated with Hb F. The transcription factors investigated in at least four eligible studies were included in this review. As a result, 56 eligible studies provided data on the BCL11A, LRF, NF-Y, GATA1, KLF1, HRI, ATF4, and MYB factors. The studies demonstrated that Hb F is cooperatively regulated by transcription factors with the BCL11A factor appearing to be the most specific target gene for γ-globin induction. Although these data are promising, there are still significant gaps and intervention limitations due to the adverse functions of the target genes. New studies that clarify the aspects and functionalities of Hb F regulators may enable new clinical approaches for sickle cell anemia patients.
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Affiliation(s)
| | - Larissa Teodoro Rabi
- Nossa Senhora do Patrocínio University Center, Itú, SP, Brazil; Laboratory of Cancer Molecular Genetics, School of Medical Sciences (FCM), University of Campinas (UNICAMP), Campinas, SP, Brazil; Institute of Health Sciences, Paulista University (UNIP), Campinas, SP, Brazil
| | - André Alves Bezerra
- Nossa Senhora do Patrocínio University Center, Itú, SP, Brazil; College of Medicine of Jundiaí, Jundiaí, SP, Brazil
| | - Marcelo Rodrigues da Cunha
- Nossa Senhora do Patrocínio University Center, Itú, SP, Brazil; College of Medicine of Jundiaí, Jundiaí, SP, Brazil
| | - Amilton Iatecola
- Nossa Senhora do Patrocínio University Center, Itú, SP, Brazil; College of Medicine of Jundiaí, Jundiaí, SP, Brazil
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Costa-Júnior DA, Souza Valente TN, Belisário AR, Carvalho GQ, Madeira M, Velloso-Rodrigues C. Association of ZBTB38 gene polymorphism (rs724016) with height and fetal hemoglobin in individuals with sickle cell anemia. Mol Genet Metab Rep 2024; 39:101086. [PMID: 38800625 PMCID: PMC11127270 DOI: 10.1016/j.ymgmr.2024.101086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/18/2024] [Accepted: 04/21/2024] [Indexed: 05/29/2024] Open
Abstract
Objectives Our study evaluated the association of the polymorphism rs724016 in the ZBTB38 gene, previously associated with height in other populations, with predictors of height, clinical outcomes, and laboratory parameters in sickle cell anemia (SCA). Methods Cross-sectional study with individuals with SCA and aged between 3 and 20 years. Clinical, laboratory, molecular, and bone age (BA) data were evaluated. Levels of IGF-1 and IGFBP-3 were adjusted for BA, target height (TH) was calculated as the mean parental height standard deviation score (SDS), and predicted adult height (PAH) SDS was calculated using BA. Results We evaluated 80 individuals with SCA. The homozygous genotype of the G allele of rs724016 was associated with a lower height SDS (p < 0.001) and, in a additive genetic model, was negatively associated with HbF levels (p = 0.016). Lower adjusted IGF-1 levels were associated with co-inheritance of alpha-thalassemia and with the absence of HU therapy. Elevated HbF levels were associated with a lower deficit in adjusted growth potential (TH minus PAH). Conclusion Our analysis shows that SNP rs724016 in the ZBTB38 is associated with shorter height and lower HbF levels, an important modifier of SCA.
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Affiliation(s)
- Domício Antônio Costa-Júnior
- Department of Medicine, Federal University of Juiz de Fora - Governador Valadares Campus (UFJF-GV), Minas Gerais (MG), Brazil
| | | | | | | | - Miguel Madeira
- Division of Endocrinology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
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Sales RR, Nogueira BL, Belisário AR, Faria G, Mendes F, Viana MB, Luizon MR. Fetal hemoglobin-boosting haplotypes of BCL11A gene and HBS1L-MYB intergenic region in the prediction of clinical and hematological outcomes in a cohort of children with sickle cell anemia. J Hum Genet 2022; 67:701-709. [PMID: 36167770 DOI: 10.1038/s10038-022-01079-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 11/09/2022]
Abstract
Single nucleotide polymorphisms (SNPs) of BCL11A gene and HBS1L-MYB intergenic region (named HMIP-2) affect both fetal hemoglobin (HbF) concentration and clinical outcomes in patients with sickle cell anemia (SCA). However, no previous study has examined the interaction among these SNPs in the regulation of HbF. We examined whether HbF-boosting haplotypes combining alleles of functional SNPs of BCL11A and HMIP-2 were associated with clinical outcomes and hematological parameters, and whether they interact to regulate HbF in a cohort of Brazilian children with SCA. The minor haplotype of BCL11A ("TCA", an allele combination of rs1427407, rs766432, and rs4671393) was associated with higher HbF, hemoglobin and lower reticulocytes count compared to reference haplotype "GAG". The minor haplotype of HMIP-2 ("CGC", an allele combination of rs9399137, rs4895441, and rs9494145) was associated with higher HbF and hemoglobin compared to reference haplotype "TAT". Subjects carrying minor haplotypes showed reduced rate of clinical complications compared to reference haplotypes. Non-carriers of both minor haplotypes for BCL11A and HMIP-2 showed the lowest HbF concentration. Subjects carrying only the minor haplotype of BCL11A showed significantly higher HbF concentration than non-carriers of any minor haplotype, which showed no significant difference compared to subjects carrying only the minor haplotype of HMIP-2. Interestingly, subjects carrying both minor haplotypes of BCL11A ("TCA") and HMIP-2 ("CGC") showed significantly higher HbF levels than subjects carrying only the minor haplotype of BCL11A. Our novel findings suggest that HbF-boosting haplotypes of BCL11A and HMIP-2 can predict clinical outcomes and may interact to regulate HbF in patients with SCA.
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Affiliation(s)
- Rahyssa Rodrigues Sales
- Programa de Pós-Graduação em Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Bárbara Lisboa Nogueira
- Programa de Pós-Graduação em Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - André Rolim Belisário
- Centro de Tecidos Biológicos de Minas Gerais, Fundação Hemominas, Lagoa Santa, Minas Gerais, 33400-000, Brazil
| | - Gabriela Faria
- Serviço de Pesquisa, Fundação Hemominas, Belo Horizonte, Minas Gerais, 30130-110, Brazil
| | - Fabiola Mendes
- Serviço de Pesquisa, Fundação Hemominas, Belo Horizonte, Minas Gerais, 30130-110, Brazil
| | - Marcos Borato Viana
- Faculdade de Medicina/NUPAD, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 30130-100, Brazil
| | - Marcelo Rizzatti Luizon
- Programa de Pós-Graduação em Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil. .,Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Delgadinho M, Ginete C, Santos B, Miranda A, Brito M. Genotypic Diversity among Angolan Children with Sickle Cell Anemia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18105417. [PMID: 34069401 PMCID: PMC8158763 DOI: 10.3390/ijerph18105417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/14/2021] [Accepted: 05/16/2021] [Indexed: 11/16/2022]
Abstract
Background. Sickle cell anemia (SCA) is an inherited blood disorder that affects over 300,000 newborns worldwide every year, being particularly prevalent in Sub-Saharan Africa. Despite being a monogenic disease, SCA shows a remarkably high clinical heterogeneity. Several studies have already demonstrated the existence of some polymorphisms that can provide major clinical benefits, producing a mild phenotype. Moreover, the existence of distinct haplotypes can also influence the phenotype patterns of certain populations, leading to different clinical manifestations. Our aim was to assess the association between polymorphisms in genes previously related to SCA disease severity in an Angolan pediatric population. Methods. This study analyzed clinical and biological data collected from 192 Angolan children. Using NGS data, we classified the HBB haplotypes based on four previously described SNPs (rs3834466, rs28440105, rs10128556, and rs968857) and the genotype for the SNPs in HBG2 (rs7482144), BCL11A (rs4671393, rs11886868, rs1427407, rs7557939), HBS1L-MYB (rs66650371) and BGLT3 (rs7924684) genes. Results. The CAR haplotype was undoubtedly the most common HBB haplotype in our population. The HbF values and the ratio of gamma chains were statistically significant for almost all of the variants studied. We reported for the first time an association between rs7924684 in the BGLT3 gene and gamma chains ratio. Conclusions. The current findings emphasize the importance personalized medicine would have if applied to SCA patient care, since some of the variants studied might predict the phenotype and the overall response to treatment.
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Affiliation(s)
- Mariana Delgadinho
- H&TRC—Health & Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisbon, Portugal; (M.D.); (C.G.)
| | - Catarina Ginete
- H&TRC—Health & Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisbon, Portugal; (M.D.); (C.G.)
| | - Brígida Santos
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Angola;
- Hospital Pediátrico David Bernardino (HPDB), Luanda 3067, Angola
| | - Armandina Miranda
- Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA), 1649-016 Lisbon, Portugal;
| | - Miguel Brito
- H&TRC—Health & Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisbon, Portugal; (M.D.); (C.G.)
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Angola;
- Correspondence: ; Tel.: +351-218980400
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Gueye Tall F, Martin C, Ndour EHM, Faes C, Déme Ly I, Pialoux V, Connes P, Gueye PM, Ndiaye Diallo R, Renoux C, Diagne I, Diop PA, Cissé A, Sall PL, Joly P. Influence of Oxidative Stress Biomarkers and Genetic Polymorphisms on the Clinical Severity of Hydroxyurea-Free Senegalese Children with Sickle Cell Anemia. Antioxidants (Basel) 2020; 9:antiox9090863. [PMID: 32937882 PMCID: PMC7555380 DOI: 10.3390/antiox9090863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 11/16/2022] Open
Abstract
Oxidative stress would play a role in the pathophysiology of sickle cell anemia (SCA). We tested the impact of common SCA genetic modifiers (alpha-thalassemia, G6PD deficiency, HbF quantitative trait loci; QTL) and pro/antioxidant genes polymorphisms (SOD2 rs4880, XO rs207454, MPO rs233322) on oxidative stress biomarkers (AOPP, MDA, MPO, XO, MnSOD, CAT, GPx) and clinical severity in 301 Senegalese SCA hydroxyurea-free children at steady-state (median age 9.1 years, sex ratio H/F = 1.3). Plasma oxidative stress biomarkers were compared with those of a control group (AA). CAT activity, AOPP, and MDA levels were higher in SCA than in AA individuals while XO, GPX, and MnSOD activities were lower. The presence of alpha-thalassemia decreased MDA level and MPO activity but no effect of the HbF QTL or G6PD deficiency was observed. SCA children who experienced their first hospitalized complication before 3 years old had higher MnSOD and CAT activities than the other children while those with no hospitalized VOC in the previous 2 years presented higher GPX activity. Age of the first hospitalized complication and AOPP levels were affected by the MPO rs2333227 SNP. Our results suggest that alpha-thalassemia modulates oxidative stress in SCA, presumably because of a reduction in the MPO activity.
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Affiliation(s)
- Fatou Gueye Tall
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
- Centre Hospitalier National d’Enfants Albert Royer-Dakar, Dakar BP 5005, Senegal; (C.M.); (I.D.L.)
| | - Cyril Martin
- Centre Hospitalier National d’Enfants Albert Royer-Dakar, Dakar BP 5005, Senegal; (C.M.); (I.D.L.)
- Laboratoire d’Excellence sur le Globule Rouge (Labex GR-Ex), 75000 Paris, France
| | - El hadji Malick Ndour
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
- Centre Hospitalier National d’Enfants Albert Royer-Dakar, Dakar BP 5005, Senegal; (C.M.); (I.D.L.)
| | - Camille Faes
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
| | - Indou Déme Ly
- Centre Hospitalier National d’Enfants Albert Royer-Dakar, Dakar BP 5005, Senegal; (C.M.); (I.D.L.)
- Service Universitaire de Pédiatrie-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal;
| | - Vincent Pialoux
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
| | - Philippe Connes
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
- Laboratoire d’Excellence sur le Globule Rouge (Labex GR-Ex), 75000 Paris, France
| | - Papa Madieye Gueye
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
| | - Rokhaya Ndiaye Diallo
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
| | - Céline Renoux
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
- UF Biochimie des Pathologies Erythrocytaires, Laboratoire de Biochimie et Biologie Moleculaire Grand-Est, Groupement Hospitalier Est, Hospices Civils de Lyon, 69500 Bron, France
| | - Ibrahima Diagne
- Service Universitaire de Pédiatrie-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal;
- UFR des Sciences de la Santé–Universite Gaston Berger, Saint-Louis 32002, Senegal
| | - Pape Amadou Diop
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
| | - Aynina Cissé
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
| | - Philomène Lopez Sall
- Laboratoire de Biochimie Pharmaceutique-FMPO, Universite Cheikh Anta Diop, Dakar BP 5005, Senegal; (F.G.T.); (E.h.M.N.); (P.M.G.); (R.N.D.); (P.A.D.); (A.C.); (P.L.S.)
- Centre Hospitalier National d’Enfants Albert Royer-Dakar, Dakar BP 5005, Senegal; (C.M.); (I.D.L.)
| | - Philippe Joly
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Equipe Biologie Vasculaire et du Globule Rouge, Universite Claude Bernard Lyon 1, COMUE Lyon, 69100 Villeurbanne, France; (C.F.); (V.P.); (P.C.); (C.R.)
- Laboratoire d’Excellence sur le Globule Rouge (Labex GR-Ex), 75000 Paris, France
- UF Biochimie des Pathologies Erythrocytaires, Laboratoire de Biochimie et Biologie Moleculaire Grand-Est, Groupement Hospitalier Est, Hospices Civils de Lyon, 69500 Bron, France
- Correspondence:
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Santos B, Delgadinho M, Ferreira J, Germano I, Miranda A, Arez AP, Faustino P, Brito M. Co-Inheritance of alpha-thalassemia and sickle cell disease in a cohort of Angolan pediatric patients. Mol Biol Rep 2020; 47:5397-5402. [PMID: 32632780 DOI: 10.1007/s11033-020-05628-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/26/2020] [Indexed: 12/19/2022]
Abstract
The aim of this study was to explore the association between alpha-thalassemia, fetal hemoglobin, hematological indices, and clinical adverse events in Angolan sickle cell disease pediatric patients. A total of 200 sickle cell disease (SCD) children were sampled in Luanda and Caxito. A venous blood sample was collected and used for hematological analyses, fetal hemoglobin quantification, and genotyping of 3.7 kb alpha-thalassemia deletion by GAP-PCR. The frequency of the 3.7 kb alpha-thalassemia deletion in homozygosity was 12.5% and in heterozygosity was 55.0%. An increase in alpha-thalassemia frequency was observed in children older than 5 years old (11.7% vs. 13.00%). Furthermore, 3.7 kb alpha-thalassemia deletion homozygotes had a significantly higher age of the first manifestation, lower number of blood transfusions by year, higher hemoglobin, lower mean corpuscular volume, mean corpuscular hemoglobin, and lower hemolytic rate observed by a lower number of reticulocytes count. There were no differences in fetal hemoglobin between the three genotypes. Moreover, the number of stroke events, osteomyelitis, splenomegaly, splenectomy, and hepatomegaly were lower when alpha-thalassemia was co-inherited. For the first time in Angolan population, the effect of alpha-thalassemia deletion in sickle cell disease was analyzed and results reinforce that this trait influences the hematological and clinical aspects and produces a milder phenotype.
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Affiliation(s)
- Brígida Santos
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Angola.,Hospital Pediátrico David Bernardino (HPDB), Luanda, Angola
| | - Mariana Delgadinho
- Health and Technology Research Center (H&TRC), Instituto Politécnico de Lisboa/Escola Superior de Tecnologia da Saúde (IPL/ESTESL), Lisbon, Portugal
| | - Joana Ferreira
- Health and Technology Research Center (H&TRC), Instituto Politécnico de Lisboa/Escola Superior de Tecnologia da Saúde (IPL/ESTESL), Lisbon, Portugal
| | - Isabel Germano
- Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA), Lisbon, Portugal
| | - Armandina Miranda
- Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA), Lisbon, Portugal
| | - Ana Paula Arez
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Paula Faustino
- Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA), Lisbon, Portugal.,Instituto de Saúde Ambiental (ISAMB), Faculdade de Medicina de Lisboa, Lisbon, Portugal
| | - Miguel Brito
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Angola. .,Health and Technology Research Center (H&TRC), Instituto Politécnico de Lisboa/Escola Superior de Tecnologia da Saúde (IPL/ESTESL), Lisbon, Portugal.
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