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Silva JDP, Lima ABD, Alvim LB, Malta FSV, Mendonça CPTB, Carvalho AHBD, Rios JSH, Fonseca PLC, Queiroz DC, Santos LCGDAE, Ferreira ACDS, Souza RPD, Aguiar RSD, Zauli DAG. Epidemiological Surveillance Reveals the Rise and Establishment of the Omicron SARS-CoV-2 Variant in Brazil. Viruses 2023; 15:v15041017. [PMID: 37112997 PMCID: PMC10145299 DOI: 10.3390/v15041017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The introduction of SARS-CoV-2 variants of concern (VOCs) in Brazil has been associated with major impacts on the epidemiological and public health scenario. In this study, 291,571 samples were investigated for SARS-CoV-2 variants from August 2021 to March 2022 (the highest peak of positive cases) in four geographical regions of Brazil. To identify the frequency, introduction, and dispersion of SARS-CoV-2 variants in 12 Brazilian capitals, VOCs defining spike mutations were identified in 35,735 samples through genotyping and viral genome sequencing. Omicron VOC was detected in late November 2021 and replaced the Delta VOC in approximately 3.5 weeks. We estimated viral load differences between SARS-CoV-2 Delta and Omicron through the evaluation of the RT-qPCR cycle threshold (Ct) score in 77,262 samples. The analysis demonstrated that the Omicron VOC has a lower viral load in infected patients than the Delta VOC. Analyses of clinical outcomes in 17,586 patients across the country indicated that individuals infected with Omicron were less likely to need ventilatory support. The results of our study reinforce the importance of surveillance programs at the national level and showed the introduction and faster dispersion of Omicron over Delta VOC in Brazil without increasing the numbers of severe cases of COVID-19.
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Affiliation(s)
- Joice do Prado Silva
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | - Aline Brito de Lima
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | - Luige Biciati Alvim
- Departamento de Produtos e Inovação, Instituto Hermes Pardini, Belo Horizonte 31270-901, Brazil
| | | | | | | | | | - Paula Luize Camargos Fonseca
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Daniel Costa Queiroz
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Luíza Campos Guerra de Araújo E Santos
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | - Renan Pedra de Souza
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Renato Santana de Aguiar
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
- Instituto D'Or de Pesquisa e Ensino (IDOR), Rio de Janeiro 22281-100, Brazil
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Lamarca AP, Souza UJBD, Moreira FRR, Almeida LGPD, Menezes MTD, Souza ABD, Ferreira ACDS, Gerber AL, Lima ABD, Guimarães APDC, Cavalcanti AC, Silva ABPE, Lima BI, Lobato C, Silva CGD, Mendonça CPTB, Queiroz DC, Zauli DAG, Menezes D, Possebon FS, Cardoso FDP, Malta FSV, Braga-Paz I, Silva JDP, Ferreira JGG, Galvão JD, Souza LMD, Ferreira L, Possuelo LG, Cavalcante LTDF, Alvim LB, Souza LFAD, Santos LCGDAE, Dias RC, Souza RB, Castro TRY, Valim ARDM, Campos FS, Araujo JP, Trindade PDA, Aguiar RS, Michael Delai R, Vasconcelos ATRD. The Omicron Lineages BA.1 and BA.2 ( Betacoronavirus SARS-CoV-2) Have Repeatedly Entered Brazil through a Single Dispersal Hub. Viruses 2023; 15:888. [PMID: 37112869 PMCID: PMC10146814 DOI: 10.3390/v15040888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Brazil currently ranks second in absolute deaths by COVID-19, even though most of its population has completed the vaccination protocol. With the introduction of Omicron in late 2021, the number of COVID-19 cases soared once again in the country. We investigated in this work how lineages BA.1 and BA.2 entered and spread in the country by sequencing 2173 new SARS-CoV-2 genomes collected between October 2021 and April 2022 and analyzing them in addition to more than 18,000 publicly available sequences with phylodynamic methods. We registered that Omicron was present in Brazil as early as 16 November 2021 and by January 2022 was already more than 99% of samples. More importantly, we detected that Omicron has been mostly imported through the state of São Paulo, which in turn dispersed the lineages to other states and regions of Brazil. This knowledge can be used to implement more efficient non-pharmaceutical interventions against the introduction of new SARS-CoV variants focused on surveillance of airports and ground transportation.
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Affiliation(s)
- Alessandra P Lamarca
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis 25651-075, Brazil
| | - Ueric José Borges de Souza
- Laboratório de Bioinformática e Biotecnologia, Universidade Federal do Tocantins, Campus de Gurupi, Palmas 77410-570, Brazil
| | - Filipe Romero Rebello Moreira
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Luiz G P de Almeida
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis 25651-075, Brazil
| | - Mariane Talon de Menezes
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | | | | | - Alexandra L Gerber
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis 25651-075, Brazil
| | - Aline B de Lima
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 30140-070, Brazil
| | - Ana Paula de C Guimarães
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis 25651-075, Brazil
| | | | - Aryel B Paz E Silva
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Bruna Israel Lima
- Laboratório de Biologia Molecular, Parque Científico e Tecnológico Regional, Universidade de Santa Cruz do Sul, Santa Cruz do Sul 96815-900, Brazil
| | - Cirley Lobato
- Centro de Ciências de Saúde e do Desporto, Universidade Federal do Acre, Rio Branco 69920-900, Brazil
| | | | - Cristiane P T B Mendonça
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 30140-070, Brazil
| | - Daniel Costa Queiroz
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | - Diego Menezes
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Fábio Sossai Possebon
- Instituto de Biotecnologia, Universidade Estadual Paulista, Botucatu 18618-689, Brazil
| | | | | | - Isabela Braga-Paz
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Joice do Prado Silva
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 30140-070, Brazil
| | - Jorge Gomes Goulart Ferreira
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | | | - Leonardo Ferreira
- Centro de Medicina Tropical da Tríplice Fronteira, Foz do Iguaçu 85866-010, Brazil
| | - Lia Gonçalves Possuelo
- Departmento de Ciências da Vida, Universidade de Santa Cruz do Sul, Santa Cruz do Sul 96815-900, Brazil
| | | | - Luige B Alvim
- Departamento de Pesquisa & Desenvolvimento, Instituto Hermes Pardini, Belo Horizonte 30140-070, Brazil
| | - Luiz Fellype Alves de Souza
- Centro de Infectologia Charles Mérieux and Laboratório Rodolphe Mérieux, Hospital das Clínicas do Acre, Rio Branco 69920-223, Brazil
| | - Luiza C G de Araújo E Santos
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Rillery Calixto Dias
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Rutilene Barbosa Souza
- Centro de Infectologia Charles Mérieux and Laboratório Rodolphe Mérieux, Hospital das Clínicas do Acre, Rio Branco 69920-223, Brazil
| | - Thaís Regina Y Castro
- Laboratório de Biologia Molecular e Bioinformática Aplicadas a Microbiologia Clínica, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | | | - Fabrício Souza Campos
- Laboratório de Virologia, Departamento de Microbiologia, Imunologia e Parasitologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre 90010-150, Brazil
| | - João Pessoa Araujo
- Instituto de Biotecnologia, Universidade Estadual Paulista, Botucatu 18618-689, Brazil
| | - Priscila de Arruda Trindade
- Laboratório de Biologia Molecular e Bioinformática Aplicadas a Microbiologia Clínica, Universidade Federal de Santa Maria, Santa Maria 97105-900, Brazil
| | - Renato S Aguiar
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Robson Michael Delai
- Centro de Medicina Tropical da Tríplice Fronteira, Foz do Iguaçu 85866-010, Brazil
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de Menezes MT, Moreira FRR, Whittaker C, Santos FM, Queiroz DC, Geddes V, Fonseca PLC, de Jesus JG, Mendes-Oliveira F, Reis-Souza V, Santos B, Zauli DAG, de Lima AB, de Brito Mendonça C, Alvim LB, do Prado Silva J, Malta FSV, de Souza Ferreira AC, Faria NR, Sabino EC, Aguiar RS. Dynamics of Early Establishment of SARS-CoV-2 VOC Omicron Lineages in Minas Gerais, Brazil. Viruses 2023; 15:585. [PMID: 36851799 PMCID: PMC9962645 DOI: 10.3390/v15020585] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/21/2023] [Accepted: 01/24/2023] [Indexed: 02/22/2023] Open
Abstract
Brazil is one of the nations most affected by Coronavirus disease 2019 (COVID-19). The introduction and establishment of new virus variants can be related to an increase in cases and fatalities. The emergence of Omicron, the most modified SARS-CoV-2 variant, caused alarm for the public health of Brazil. In this study, we examined the effects of the Omicron introduction in Minas Gerais (MG), the second-most populous state of Brazil. A total of 430 Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) samples from November 2021 to June 2022 from Belo Horizonte (BH) city were sequenced. These newly sequenced genomes comprise 72% of all previously available SARS-CoV-2 genomes for the city. Evolutionary analysis of novel viral genomes reveals that a great diversity of Omicron sublineages have circulated in BH, a pattern in-keeping with observations across Brazil more generally. Bayesian phylogeographic reconstructions indicate that this diversity is a product of a large number of international and national importations. As observed previously, São Paulo state is shown as a significant hub for viral spread throughout the country, contributing to around 70% of all viral Omicron introductions detected in MG.
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Affiliation(s)
- Mariane Talon de Menezes
- Laboratory of Molecular Virology, Institute of Biology, Department of Genetics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Filipe Romero Rebello Moreira
- Laboratory of Molecular Virology, Institute of Biology, Department of Genetics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, London SW7 2BX, UK
| | - Charles Whittaker
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, London SW7 2BX, UK
| | - Franciele Martins Santos
- Laboratory of Integrative Biology, Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270, Brazil
| | - Daniel Costa Queiroz
- Laboratory of Integrative Biology, Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270, Brazil
| | - Victor Geddes
- Laboratory of Integrative Biology, Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270, Brazil
| | - Paula Luize Camargos Fonseca
- Laboratory of Integrative Biology, Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270, Brazil
| | - Jaqueline Góes de Jesus
- Institute of Tropical Medicine, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
- Department of Infectious and Parasitic Diseases, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
| | - Franciane Mendes-Oliveira
- Institute of Tropical Medicine, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
| | - Valquíria Reis-Souza
- Institute of Tropical Medicine, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
| | | | | | - Aline Brito de Lima
- Pardini Group, Research and Development Department, Belo Horizonte 31270, Brazil
| | | | - Luige Biciati Alvim
- Pardini Group, Research and Development Department, Belo Horizonte 31270, Brazil
| | - Joice do Prado Silva
- Pardini Group, Research and Development Department, Belo Horizonte 31270, Brazil
| | | | | | - Nuno R. Faria
- MRC Centre for Global Infectious Disease Analysis, Imperial College London, London SW7 2BX, UK
- Institute of Tropical Medicine, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
- Department of Zoology, University of Oxford, Oxford OX3 7BN, UK
| | - Ester Cerdeira Sabino
- Institute of Tropical Medicine, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
- Department of Infectious and Parasitic Diseases, Faculty of Medicine, University of São Paulo, São Paulo 04023, Brazil
| | - Renato Santana Aguiar
- Laboratory of Molecular Virology, Institute of Biology, Department of Genetics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
- Laboratory of Integrative Biology, Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270, Brazil
- D’OR Institute of Research and Teaching, Rio de Janeiro 21941-901, Brazil
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Alves HJ, de Araújo JLF, Fonseca PLC, Moreira FRR, Bonfim DM, Queiroz DC, Miguita L, de Souza RM, Geddes VEV, Costa WC, de Oliveira JS, Medeiros ELA, de Souza CSA, Saliba JW, Menezes AL, de Oliveira ES, Adelino TER, Guimaraes NR, Ribeiro AA, Moreira RG, Zauli DAG, Silva JDP, Malta FSV, Ferreira ACDS, Silva AVFG, Alfenas-Zerbini P, de Souza FO, Sabino ADP, Xavier LDA, Carobin NV, de Carvalho AF, Lourenço KL, Teixeira SMR, Fernandes APSM, da Fonseca FG, Abrahão JS, Iani FCDM, Rodrigues RAL, de Souza RP, Aguiar RS. Monitoring the Establishment of VOC Gamma in Minas Gerais, Brazil: A Retrospective Epidemiological and Genomic Surveillance Study. Viruses 2022; 14:v14122747. [PMID: 36560750 PMCID: PMC9781153 DOI: 10.3390/v14122747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
Since its first identification in Brazil, the variant of concern (VOC) Gamma has been associated with increased infection and transmission rates, hospitalizations, and deaths. Minas Gerais (MG), the second-largest populated Brazilian state with more than 20 million inhabitants, observed a peak of cases and deaths in March-April 2021. We conducted a surveillance study in 1240 COVID-19-positive samples from 305 municipalities distributed across MG's 28 Regional Health Units (RHU) between 1 March to 27 April 2021. The most common variant was the VOC Gamma (71.2%), followed by the variant of interest (VOI) zeta (12.4%) and VOC alpha (9.6%). Although the predominance of Gamma was found in most of the RHUs, clusters of Zeta and Alpha variants were observed. One Alpha-clustered RHU has a history of high human mobility from countries with Alpha predominance. Other less frequent lineages, such as P.4, P.5, and P.7, were also identified. With our genomic characterization approach, we estimated the introduction of Gamma on 7 January 2021, at RHU Belo Horizonte. Differences in mortality between the Zeta, Gamma and Alpha variants were not observed. We reinforce the importance of vaccination programs to prevent severe cases and deaths during transmission peaks.
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Affiliation(s)
- Hugo José Alves
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - João Locke Ferreira de Araújo
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Paula Luize Camargos Fonseca
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Filipe Romero Rebello Moreira
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Diego Menezes Bonfim
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Daniel Costa Queiroz
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Lucyene Miguita
- Departamento de Patologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Rafael Marques de Souza
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Victor Emmanuel Viana Geddes
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Walyson Coelho Costa
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Jaqueline Silva de Oliveira
- Subsecretaria de Vigilância em Saúde, Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte 31585-200, Brazil
| | - Eva Lídia Arcoverde Medeiros
- Subsecretaria de Vigilância em Saúde, Secretaria de Estado de Saúde de Minas Gerais, Belo Horizonte 31585-200, Brazil
| | | | | | - André Luiz Menezes
- Secretaria Municipal de Saúde, Prefeitura de Belo Horizonte, Belo Horizonte 30130-040, Brazil
| | | | | | | | | | - Rennan Garcias Moreira
- Centro de Laboratórios Multiusuários, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | | | | | - Alessandro Clayton de Souza Ferreira
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | | | - Poliane Alfenas-Zerbini
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Biotecnologia Aplicada à Agropecuária, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | - Flavia Oliveira de Souza
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Biotecnologia Aplicada à Agropecuária, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | - Adriano de Paula Sabino
- Laboratório de Institucional de Pesquisa em Biomarcadores, LINBIO, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Laura do Amaral Xavier
- Laboratório de Institucional de Pesquisa em Biomarcadores, LINBIO, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Natália Virtude Carobin
- Laboratório de Institucional de Pesquisa em Biomarcadores, LINBIO, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Alex Fiorini de Carvalho
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte 31310-260, Brazil
| | - Karine Lima Lourenço
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte 31310-260, Brazil
| | | | | | | | - Jônatas Santos Abrahão
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31279-901, Brazil
| | | | - Rodrigo Araújo Lima Rodrigues
- Laboratório de Vírus, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31279-901, Brazil
| | - Renan Pedra de Souza
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
- Correspondence: (R.P.d.S.); (R.S.A.)
| | - Renato Santana Aguiar
- Laboratório de Biologia Integrativa, Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
- Instituto D’Or de Pesquisa e Ensino (IDOR), Rio de Janeiro 22281-100, Brazil
- Correspondence: (R.P.d.S.); (R.S.A.)
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Aguiar VRDC, Wolfgramm EDV, Malta FSV, Bosque AG, Mafia ADC, Almeida VCDO, Caxito FDA, Pardini VC, Ferreira ACS, Louro ID. Corrigendum to “Updated Brazilian STR allele frequency data using over 100,000 individuals: An analysis of CSF1PO, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51, D21S11, FGA, Penta D, Penta E, TH01, TPOX and vWA loci” [Forensic Sci. Int.: Genet. 6 (4) (2012) 504–509]. Forensic Sci Int Genet 2013. [DOI: 10.1016/j.fsigen.2012.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Angelo PC, Ferreira ACS, Fonseca VD, Frade SP, Ferreira CS, Malta FSV, Pereira AK, Leite HV, Brum AP, Pardini VC, Gomes KB, Cabral ACV. Cryopreservation does not alter karyotype, multipotency, or NANOG/SOX2 gene expression of amniotic fluid mesenchymal stem cells. Genet Mol Res 2012; 11:1002-12. [PMID: 22576926 DOI: 10.4238/2012.april.19.5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cryopreservation of mesenchymal stem cells from amniotic fluid is of clinical importance, as these cells can be harvested during the prenatal period and stored for use in treatments. We examined the behavior of mesenchymal stem cells from human amniotic fluid in culture that had been subjected to cryopreservation. We assessed chromosomal stability through karyotype analysis, determined whether multipotent capacity (differentiation into adipogenic, chondrogenic, and osteogenic cells) is maintained, and analyzed SOX2 and NANOG expression after thawing. Five amniotic fluid samples were cryopreserved for 150 days. No chromosomal aberrations were observed. The expression levels of NANOG and SOX2 also were quite similar before and after cryopreservation. Capacity for differentiation into adipogenic, chondrogenic, and osteogenic tissues also remained the same. We conclude that cryopreservation of amniotic fluid does not alter karyotype, NANOG/SOX2 gene expression, or multipotent capacity of stem cells that have been collected from amniotic fluid during pregnancy.
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Affiliation(s)
- P C Angelo
- Instituto Hermes Pardini, Belo Horizonte, MG, Brasil
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Possamai CO, Carvalho FM, Silva MFC, Wolfgramm EV, Sartori MPN, Malta FSV, Ribeiro VP, Spina VP, Gomes KB, Ferreira ACS, Louro ID. Utility of STR markers for the molecular diagnosis of a large Brazilian family with Charcot-Marie-Tooth disease. Genet Mol Res 2008; 7:1179-85. [PMID: 19048496 DOI: 10.4238/vol7-4gmr500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Charcot-Marie-Tooth type 1A disease (CMT1A) is most frequently caused by a tandem DNA duplication of a 1.4-Mb genomic fragment in the 17p11.2-12 chromosomal region. The disease is probably the product of a dosage effect of the peripheral myelin protein 22 gene located within the duplicated segment. We sought to study the largest reported Brazilian family with suspected diagnosis of CMT1A using eight short tandem repeat microsatellite markers. In addition, we analyzed the informativeness of these markers in the normal Brazilian population. The duplication was found in 12 members of the family. In two patients with CMT1A symptoms, the duplication was not detected, and one asymptomatic subject showed the duplication. D17S2230, D17S9B, D17S2220, D17S2227, D17S9A, and D17S4A markers showed the highest heterozygosity rates, and D17S2228 and D17S2224 markers were the least informative in our analysis.
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Affiliation(s)
- C O Possamai
- Departamento de Ciências Biológicas, Centro de Ciências Humanas e Naturais, Núcleo de Genética Humana e Molecular, Universidade Federal do Espírito Santo, Vitória, ES, Brasil
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