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Fonseca PLC, Moreira FRR, de Souza RM, Guimarães NR, Carvalho NO, Adelino TER, Alves HJ, Alvim LB, Candido DS, Coelho HP, Costa AVB, Costa WC, de Carvalho AF, de Faria BWF, de Lima AB, de Oliveira ES, de Souza CSA, de Souza FG, Dias RC, Geddes VEV, Godinho IP, Gonçalves AL, Lourenço KL, Magalhães RDM, Malta FSV, Medeiros ELA, Mendes FS, Mendes PHBDP, Mendonça CPTB, Menezes AL, Menezes D, Menezes MT, Miguita L, Moreira RG, Peixoto RB, Queiroz DC, Ribeiro AA, Ribeiro APDB, Saliba JW, Sato HI, Silva JDP, Silva NP, Faria NR, Teixeira SMR, da Fonseca FG, Fernandes APSM, Zauli DAG, Januario JN, de Oliveira JS, Iani FCDM, de Aguiar RS, de Souza RP. Tracking the turnover of SARS-CoV-2 VOCs Gamma to Delta in a Brazilian state (Minas Gerais) with a high-vaccination status. Virus Evol 2022; 8:veac064. [PMID: 35996592 PMCID: PMC9384558 DOI: 10.1093/ve/veac064] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 06/24/2022] [Accepted: 07/26/2022] [Indexed: 11/24/2022] Open
Abstract
The emergence and global dissemination of Severe Acute Respiratory Syndrome virus 2 (SARS-CoV-2) variants of concern (VOCs) have been described as the main factor driving the Coronavirus Disease 2019 pandemic. In Brazil, the Gamma variant dominated the epidemiological scenario during the first period of 2021. Many Brazilian regions detected the Delta variant after its first description and documented its spread. To monitor the introduction and spread of VOC Delta, we performed Polymerase Chain Reaction (PCR) genotyping and genome sequencing in ten regional sentinel units from June to October 2021 in the State of Minas Gerais (MG). We documented the introduction and spread of Delta, comprising 70 per cent of the cases 8 weeks later. Comparing the viral loads of the Gamma and Delta dominance periods, we provide additional evidence that the latter is more transmissible. The spread and dominance of Delta did not culminate in the increase in cases and deaths, suggesting that the vaccination may have restrained the epidemic growth. Analysis of 224 novel Delta genomes revealed that Rio de Janeiro state was the primary source for disseminating this variant in the state of MG. We present the establishment of Delta, providing evidence of its enhanced transmissibility and showing that this variant shift did not aggravate the epidemiological scenario in a high immunity setting.
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Affiliation(s)
- Paula L C Fonseca
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Filipe R R Moreira
- MRC Centre for Global Infectious Disease Analysis, J-IDEA, Imperial College London, Exhibition Rd, South Kensington, London SW7 2BX, UK
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Av. Carlos Chagas Filho 373, Cidade Universitaria, Rio de Janeiro 21941-902, Rio de Janeiro, Brazil
| | - Rafael M de Souza
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Natália R Guimarães
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Nara O Carvalho
- Núcleo de Ações e Pesquisa em Apoio Diagnóstico-Nupad/Faculdade de Medicina/Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Av. Prof. Alfredo Balena 189, Centro, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Talita E R Adelino
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Hugo J Alves
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Luige B Alvim
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - Darlan S Candido
- Department of Zoology, University of Oxford, 11a Mansfield Rd, Oxford OX13SZ, UK
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Enéas Carvalho de Aguiar 470, Jardim América, São Paulo 05403000, São Paulo, Brazil
| | - Helena P Coelho
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Alana V B Costa
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Walyson C Costa
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Alex F de Carvalho
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Bruna W F de Faria
- Secretaria Municipal de Saúde de Belo Horizonte, Av. Afonso Pena 2336, Funcionários, Belo Horizonte 30130-040, Minas Gerais, Brazil
| | - Aline B de Lima
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - Eneida S de Oliveira
- Secretaria Municipal de Saúde de Belo Horizonte, Av. Afonso Pena 2336, Funcionários, Belo Horizonte 30130-040, Minas Gerais, Brazil
| | - Carolina S A de Souza
- Pan American Health Organization—PAHO, Av. Das Nações SEN, Asa Norte, Brasilia 70312970, Brazil
| | - Fernanda G de Souza
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Rillery C Dias
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Victor E V Geddes
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Igor P Godinho
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Alessandro L Gonçalves
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Karine L Lourenço
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Rubens D M Magalhães
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Frederico S V Malta
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - Eva L A Medeiros
- Subsecretaria de Vigilância em Saúde, Secretaria de Estado de Saúde de Minas Gerais, Rodovia Papa João Paulo II 4143. Edifício Minas Gerais, Cidade Administrativa, Serra verde, Belo Horizonte 31630900, Minas Gerais, Brazil
| | - Fernanda S Mendes
- Núcleo de Ações e Pesquisa em Apoio Diagnóstico-Nupad/Faculdade de Medicina/Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Av. Prof. Alfredo Balena 189, Centro, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Pedro H B de P Mendes
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Cristiane P T B Mendonça
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - Andre L Menezes
- Secretaria Municipal de Saúde de Belo Horizonte, Av. Afonso Pena 2336, Funcionários, Belo Horizonte 30130-040, Minas Gerais, Brazil
| | - Diego Menezes
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Mariane T Menezes
- MRC Centre for Global Infectious Disease Analysis, J-IDEA, Imperial College London, Exhibition Rd, South Kensington, London SW7 2BX, UK
| | - Lucyene Miguita
- Departamento de Patologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Rennan G Moreira
- Centro de Laboratórios Multiusuários, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Renata B Peixoto
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Daniel C Queiroz
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
| | - Adriana A Ribeiro
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Ana Paula de B Ribeiro
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Juliana W Saliba
- Pan American Health Organization—PAHO, Av. Das Nações SEN, Asa Norte, Brasilia 70312970, Brazil
| | - Hugo I Sato
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Joice do P Silva
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - Natiely P Silva
- Núcleo de Ações e Pesquisa em Apoio Diagnóstico-Nupad/Faculdade de Medicina/Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Av. Prof. Alfredo Balena 189, Centro, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Nuno R Faria
- MRC Centre for Global Infectious Disease Analysis, J-IDEA, Imperial College London, Exhibition Rd, South Kensington, London SW7 2BX, UK
- Department of Zoology, University of Oxford, 11a Mansfield Rd, Oxford OX13SZ, UK
- Instituto de Medicina Tropical, Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Enéas Carvalho de Aguiar 470, Jardim América, São Paulo 05403000, São Paulo, Brazil
| | - Santuza M R Teixeira
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Flávio G da Fonseca
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Ana Paula S M Fernandes
- Centro de Tecnologia de Vacinas, Universidade Federal de Minas Gerais, Rua Professor José Vieira de Mendonça 770, Engenho Nogueira, Belo Horizonte 31310260, Minas Gerais, Brazil
| | - Danielle A G Zauli
- Instituto Hermes Pardini, Av. das Nações 2448, Distrito Industrial, Vespasiano 33201003, Minas Gerais, Brazil
| | - José Nélio Januario
- Núcleo de Ações e Pesquisa em Apoio Diagnóstico-Nupad/Faculdade de Medicina/Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Av. Prof. Alfredo Balena 189, Centro, Belo Horizonte 30130-100, Minas Gerais, Brazil
| | - Jaqueline S de Oliveira
- Subsecretaria de Vigilância em Saúde, Secretaria de Estado de Saúde de Minas Gerais, Rodovia Papa João Paulo II 4143. Edifício Minas Gerais, Cidade Administrativa, Serra verde, Belo Horizonte 31630900, Minas Gerais, Brazil
| | - Felipe C de M Iani
- Fundacao Ezequiel Dias, Rua Conde Pereira Carneiro 80, Gameleira, Belo Horizonte 30510-010, Minas Gerais, Brazil
| | - Renato S de Aguiar
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
- Instituto D’OR de Pesquisa e Ensino, Rio de Janeiro 22281100, Rio de Janeiro, Brazil
| | - Renan P de Souza
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte 31270901, Minas Gerais, Brazil
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2
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Simões S, Canhoto C, Bärlocher F, Gonçalves AL. Hydrological contraction patterns and duration of drying period shape microbial-mediated litter decomposition. Sci Total Environ 2021; 785:147312. [PMID: 33957592 DOI: 10.1016/j.scitotenv.2021.147312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
The length and number of streams experiencing intermittency is expected to increase in response to human population growth, associated water use, and climate change. In these streams, habitat contraction may occur at distinct rates giving rise to drying periods of distinct duration. To date, the impact of drought installation rate and duration have been mostly overlooked. In this microcosm study, stream conditioned oak leaf litter was subjected to either a short (5 weeks) or a long (8 weeks) drying period, originating from a very slow, slow, or abrupt contraction. The effects of these treatments were compared at the end of the drying period in terms of microbial-mediated litter mass loss, fungal biomass, respiration, and sporulation rates. A very slow contraction pattern led to 1.3 times higher mass loss than both slow or abrupt contraction. Fungal biomass, respiration and sporulation rates were up to 2.3 times lower under slow than abrupt contraction. Both drying period durations inhibited leaf decomposition, suggesting an early, critical effect of drying on microbial-mediated processing, regardless of contraction pattern. This seems to be related to an impoverishment of leaf associated fungal communities and resultant lower functional efficacy - species richness decreased by up to 75% in response to a long (vs. short) drying period, despite the maintenance of mycelial biomass. Our results show the relevance of aquatic hyphomycetes to litter decomposition in dry streambeds, particularly following slower habitat contraction patterns. Faster wet-to-dry transitions and longer drying periods strongly impaired microbial functioning, with potential impacts on global processing rates and cascading effects through changes of detritus quality. If confirmed in field tests, such impacts on stream functioning may be mitigated by preserving riparian forests, which may protect against extreme drying events by buffering temperature changes.
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Affiliation(s)
- S Simões
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
| | - C Canhoto
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
| | - F Bärlocher
- Department of Biology, Mt. Allison University, Sackville E4L1G7, New Brunswick, Canada.
| | - A L Gonçalves
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
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3
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Aguiar RS, Pohl F, Morais GL, Nogueira FCS, Carvalho JB, Guida L, Arge LWP, Melo A, Moreira MEL, Cunha DP, Gomes L, Portari EA, Velasquez E, Melani RD, Pezzuto P, de Castro FL, Geddes VEV, Gerber AL, Azevedo GS, Schamber-Reis BL, Gonçalves AL, Junqueira-de-Azevedo I, Nishiyama MY, Ho PL, Schanoski AS, Schuch V, Tanuri A, Chimelli L, Vasconcelos ZFM, Domont GB, Vasconcelos ATR, Nakaya HI. Molecular alterations in the extracellular matrix in the brains of newborns with congenital Zika syndrome. Sci Signal 2020; 13:eaay6736. [PMID: 32518143 DOI: 10.1126/scisignal.aay6736] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Zika virus (ZIKV) infection during pregnancy can cause a set of severe abnormalities in the fetus known as congenital Zika syndrome (CZS). Experiments with animal models and in vitro systems have substantially contributed to our understanding of the pathophysiology of ZIKV infection. Here, to investigate the molecular basis of CZS in humans, we used a systems biology approach to integrate transcriptomic, proteomic, and genomic data from the postmortem brains of neonates with CZS. We observed that collagens were greatly reduced in expression in CZS brains at both the RNA and protein levels and that neonates with CZS had several single-nucleotide polymorphisms in collagen-encoding genes that are associated with osteogenesis imperfecta and arthrogryposis. These findings were validated by immunohistochemistry and comparative analysis of collagen abundance in ZIKV-infected and uninfected samples. In addition, we showed a ZIKV-dependent increase in the expression of cell adhesion factors that are essential for neurite outgrowth and axon guidance, findings that are consistent with the neuronal migration defects observed in CZS. Together, these findings provide insights into the underlying molecular alterations in the ZIKV-infected brain and reveal host genes associated with CZS susceptibility.
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Affiliation(s)
- Renato S Aguiar
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fabio Pohl
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Guilherme L Morais
- National Laboratory of Scientific Computation, LNCC/MCTI, Petrópolis, Brazil
| | - Fabio C S Nogueira
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Proteomics, LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Joseane B Carvalho
- National Laboratory of Scientific Computation, LNCC/MCTI, Petrópolis, Brazil
| | - Letícia Guida
- Fernandes Figueira Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Luis W P Arge
- National Laboratory of Scientific Computation, LNCC/MCTI, Petrópolis, Brazil
| | - Adriana Melo
- Instituto de Pesquisa Professor Amorim Neto, Campina Grande, Paraíba, Brazil
| | | | - Daniela P Cunha
- Fernandes Figueira Institute, Fiocruz, Rio de Janeiro, Brazil
| | - Leonardo Gomes
- Fernandes Figueira Institute, Fiocruz, Rio de Janeiro, Brazil
| | | | - Erika Velasquez
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rafael D Melani
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Pezzuto
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda L de Castro
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Victor E V Geddes
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandra L Gerber
- National Laboratory of Scientific Computation, LNCC/MCTI, Petrópolis, Brazil
| | - Girlene S Azevedo
- Instituto de Pesquisa Professor Amorim Neto, Campina Grande, Paraíba, Brazil
| | - Bruno L Schamber-Reis
- Faculdade de Ciências Médicas de Campina Grande, Núcleo de Genética Médica, Centro Universitário UniFacisa, Campina Grande, Paraíba, Brazil
| | - Alessandro L Gonçalves
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Milton Y Nishiyama
- Special Laboratory for Applied Toxinology, Butantan Institute, São Paulo, Brazil
| | - Paulo L Ho
- Bacteriology Laboratory, Butantan Institute, São Paulo, Brazil
| | | | - Viviane Schuch
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Amilcar Tanuri
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leila Chimelli
- Laboratório de Neuropatologia, Instituto Estadual do Cérebro, Rio de Janeiro, Brazil.
| | | | - Gilberto B Domont
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Ana T R Vasconcelos
- National Laboratory of Scientific Computation, LNCC/MCTI, Petrópolis, Brazil.
| | - Helder I Nakaya
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
- Scientific Platform Pasteur-USP, São Paulo, Brazil
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4
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Castro FL, Geddes VEV, Monteiro FLL, Gonçalves RMDT, Campanati L, Pezzuto P, Paquin-Proulx D, Schamber-Reis BL, Azevedo GS, Gonçalves AL, Cunha DP, Moreira MEL, Vasconcelos ZFM, Chimeli L, Melo A, Tanuri A, Nixon DF, Ribeiro-Alves M, Aguiar RS. MicroRNAs 145 and 148a Are Upregulated During Congenital Zika Virus Infection. ASN Neuro 2019; 11:1759091419850983. [PMID: 31213064 PMCID: PMC6585135 DOI: 10.1177/1759091419850983] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/04/2019] [Accepted: 04/13/2019] [Indexed: 12/24/2022] Open
Abstract
Zika virus (ZIKV) is an arthropod-borne virus (arbovirus) member of the Flaviviridae family, which has been associated with the development of the congenital Zika syndrome (CZS). RNA viruses, such as flaviviruses, have been reported to exert a profound impact on host microRNAs (miRNAs). Cellular miRNAs modulated by ZIKV may help identify cellular pathways of relevance to pathogenesis. Here, we screened 754 human cellular miRNAs modulated by ZIKV infection (Brazilian PE strain) in a neuroblastoma cell line. Seven miRNAs (miR-99a*, miR-126*, miR-190b, miR-361-3p, miR-522-3p, miR-299-5p, and miR-1267) were downregulated during ZIKV infection, while miR-145 was upregulated. Furthermore, 11 miRNAs were exclusively expressed in ZIKV-infected (miR-148a, miR-342-5p, miR-598, and miR-708-3p) or mock cells (miR-208, miR-329, miR-432-5p, miR-488, miR-518b, miR-520g, and miR-767-5p). Furthermore, in silico analysis indicated that some central nervous system, cellular migration, and adhesion function-related biological processes were overrepresented in the list of target genes of the miRNAs regulated in ZIKV-infected cells, especially for miR-145 and miR-148a. The induction of miR-145 and miR-148a was confirmed in postmortem brain samples from stillborn with severe CZS. Finally, we determined the expression regulation of microcephaly related genes through RNA interference pathway caused by ZIKV directly on neuron cells.
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Affiliation(s)
- Fernanda L. Castro
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Victor E. V. Geddes
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fábio L. L. Monteiro
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raphael M. D. T. Gonçalves
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Loraine Campanati
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Pezzuto
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Dominic Paquin-Proulx
- Department of Microbiology, Immunology & Tropical Medicine, The George Washington University, Washington, DC, USA
| | - Bruno L. Schamber-Reis
- Faculdade de Ciências Médicas de Campina Grande, Núcleo de Genética Médica, Centro Universitário UniFacisa, Campina Grande, Brazil
| | | | | | | | | | | | - Leila Chimeli
- Laboratório de Neuropatologia, Instituto Estadual do Cérebro, Rio de Janeiro, Brazil
| | - Adriana Melo
- Faculdade de Ciências Médicas de Campina Grande, Núcleo de Genética Médica, Centro Universitário UniFacisa, Campina Grande, Brazil
- Instituto de Pesquisa Professor Amorim Neto, Campina Grande, Brazil
| | - Amilcar Tanuri
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Douglas F. Nixon
- Division of Infectious Diseases, Weill Cornell Medicine, New York City, NY, USA
| | | | - Renato S. Aguiar
- Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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5
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Camelo JS, Martinez FE, Gonçalves AL, Monteiro JP, Jorge SM. Plasma amino acids in pregnancy, placental intervillous space and preterm newborn infants. ACTA ACUST UNITED AC 2008; 40:971-7. [PMID: 17653451 DOI: 10.1590/s0100-879x2006005000103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2006] [Accepted: 03/06/2007] [Indexed: 11/21/2022]
Abstract
Plasma amino acid levels have never been studied in the placental intervillous space of preterm gestations. Our objective was to determine the possible relationship between plasma amino acids of maternal venous blood (M), of the placental intervillous space (PIVS) and of the umbilical vein (UV) of preterm newborn infants. Plasma amino acid levels were analyzed by ion-exchange chromatography in M from 14 parturients and in the PIVS and UV of their preterm newborn infants. Mean gestational age was 34 +/- 2 weeks, weight = 1827 +/- 510 g, and all newborns were considered adequate for gestational age. The mean Apgar score was 8 and 9 at the first and fifth minutes. Plasma amino acid values were significantly lower in M than in PIVS (166%), except for aminobutyric acid. On average, plasma amino acid levels were significantly higher in UV than in M (107%) and were closer to PIVS than to M values, except for cystine and aminobutyric acid (P < 0.05). Comparison of the mean plasma amino acid concentrations in the UV of preterm to those of term newborn infants previously studied by our group showed no significant difference, except for proline (P < 0.05), preterm > term. These data suggest that the mechanisms of active amino acid transport are centralized in the syncytiotrophoblast, with their passage to the fetus being an active bidirectional process with asymmetric efflux. PIVS could be a reserve amino acid space for the protection of the fetal compartment from inadequate maternal amino acid variations.
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Affiliation(s)
- J S Camelo
- Departamento de Puericultura e Pediatria, Faculdade de Medicina de Ribeirão Preto, Universidade de São PauloRibeirão Preto, SP, Brasil.
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6
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Vieira DSS, Masruha MR, Gonçalves AL, Zukerman E, Senne Soares CA, Naffah-Mazzacoratti MDG, Peres MFP. Idiopathic intracranial hypertension with and without papilloedema in a consecutive series of patients with chronic migraine. Cephalalgia 2008; 28:609-13. [PMID: 18384415 DOI: 10.1111/j.1468-2982.2008.01564.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Chronic migraine (CM) has been associated with idiopathic intracranial hypertension without papilloedema (IIHWOP), a significant percentage of these cases occurring in obese patients with intractable headache. A prospective study from February 2005 to June 2006 was made of 62 CM patients who fulfilled International Headache Society diagnostic criteria and had cerebral magnetic resonance venography (MRV) and lumbar puncture (LP) done. Two patients were excluded, six (10%) with elevated cerebrospinal fluid (CSF) open pressure (OP), five with body mass index (BMI) > 25. None of the patients had papilloedema or abnormal MRV. BMI and CSF OP were significantly correlated (r = 0.476, P < 0.001, Pearson's correlation test). Obesity (defined as BMI > 30) was a predictor of increase in intracranial pressure (defined as OP > 200 mmH(2)O) (f = 17.26, 95% confidence interval 6.0, 8.6; P < 0.001). From our study we strongly recommend that not only intractable CM patients with high BMI, but also first diagnosed patients with BMI > 30 should be systematically evaluated by a LP to rule out IIHWOP.
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Affiliation(s)
- D S S Vieira
- Instituto Israelita de Ensino e Pesquisa Albert Einstein, Instituto do Cérebro, Hospital Israelita Albert Einstein, São Paulo, Brazil
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7
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d'Azevedo PA, Dias CA, Gonçalves AL, Rowe F, Teixeira LM. Evaluation of an automated system for the identification and antimicrobial susceptibility testing of enterococci. Diagn Microbiol Infect Dis 2001; 40:157-61. [PMID: 11576787 DOI: 10.1016/s0732-8893(01)00272-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The performance of a new version of an automated system panel, the Positive Combo Panel Type 11 of MicroScan WalkAway 96 (WA96; Dade Behring) was evaluated and compared to that of reference methods for the identification and for antimicrobial susceptibility testing of the different enterococcal species. A total of 376 enterococcal isolates were tested. The MicroScan WA96 correctly identified 99.6% (266/267), 78.3% (18/23) and 68.6% (59/86) of Enterococcus faecalis, Enterococcus faecium and species other than E. faecalis and E. faecium, respectively. Although low probability of accurate identification was obtained for 37 (9.8%) strains, the system indicated that supplementary tests were necessary for precise identification of 8 (9.3%) among the 86 strains included in the non-faecalis/non-faecium group and of 3 (13.0%) among the E. faecium isolates. In comparison to the agar screening method, the percentage of agreement for detection of resistance markers by the automated system was 90.2% (37/41) for ampicillin, 90.6% (48/53) for high-level resistance to streptomycin (HLRS), 96.4% (80/83) for high-level resistance to gentamicin (HLRG), and 100% (14/14) for vancomycin. The results indicate that the MicroScan WA96 performed well for the identification of E. faecalis and typical E. faecium isolates, and for the detection of resistance to vancomycin and HLRG. However, the system still needs further improvement in order to provide reliable results for the characterization of the other enterococcal species, including atypical variants of E. faecium.
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Affiliation(s)
- P A d'Azevedo
- Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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8
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Fiori RM, Diniz EM, Lopes JM, Gonçalves AL, da Costa MT, Marino WT, Abdallah VO, Segre CA, de Carvalho M, Guimarães WM, Margotto PR, Bevilacqua G. Surfactant replacement therapy: a multicentric trial comparing two dosage approaches. Acta Biomed Ateneo Parmense 1999; 68 Suppl 1:55-63. [PMID: 10021718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
In this study the results of two different initial doses (Group A: 200 mg/kg--82 patients; Group B: 100 mg/kg--83 patients) of a porcine surfactant were compared in the treatment of neonatal respiratory distress syndrome. Main entry criteria were: birth weight between 700 and 2,000 grams, need of mechanical ventilation, FiO2 > or = 0.60 to obtain a PaO2 between 50 and 80 mmHg (PaO2/FiO2 < or = 133.3 mmHg) and less than 15 hours of postnatal age. Two further 100 mg/kg doses could be given in both groups at 12 hours interval if FiO2 was > 0.40. Birth weight (Group A: 1,231 +/- 281 g. and Group B: 1,324 +/- 355 g.), gestational age (Group A: 29.9 +/- 2.7 wk. and Group B: 30.6 +/- 2.6 wk.) and Apgar scores were similar in the two groups. Group A had a significantly higher mean PaO2/FiO2 ratio (p < 0.05) after 12 hours--178 (40-506) vs 133 (17-243) mmHg, before receiving a 2nd dose, after 24 hours--180 (17-431) vs 152 (39-360), and in the 3rd day--177 (40-333) vs 124 (24-249) and needed a lower FiO2 (p < 0.05) after 36 hours (0.47 +/- 0.20 vs 0.53 +/- 0.23) and on the 3rd day (0.51 +/- 0.23 vs 0.61 +/- 0.24). The mean peak inspiratory pressure was lower in Group A at 36 hours (17.5 +/- 4.5 vs 20.6 +/- 6.8) after the initial dose (p < 0.05). The time of exposure to high oxygen concentrations (FiO2 > or = 0.40) was lower in Group A--85 (3-643) vs 131 (3-672) hours; p < 0.05). Total amount of phospholipids given per patient was meanly 224 mg in Group A and 144 mg in Group B. Mortality was lower in group A but without significant difference (Group A: 17/82; Group B: 26/83). The analysis of the subgroup of babies with less than 1,500 gr. at birth showed a statistically significant difference in mortality (Group A: 15/70; Group B: 24/56; p < 0.02).
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Affiliation(s)
- R M Fiori
- Pontificia Universidade Católica, Hospital São Lucas, Porto Alegre, Brazil.
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9
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Abstract
OBJECTIVE: Considering the rarity and the significance of early diagnosis for planning appropriate treatment, a case of congenital tuberculosis is reported.CASE REPORT: After a prolonged stay in the Neonatal Intensive Care Unit (NICU) of a male pre-term infant without improvement, the diagnosis of tuberculosis was suspected when his mother underwent thoracotomy for valve replacement due to a subacute endocarditis. At this time, multiple pleural granulomas were detected and the diagnosis of tuberculosis was confirmed by histology. His mother seldom went to the NICU to see the baby and she was rarely very close to him in these occasions. After tuberculosis therapy, the baby gradually improved. CONCLUSION: Among the possible ways of transmission, the reported case was probably transmitted by aspiration of contaminated amniotic fluid in utero or at the time of delivery.
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Affiliation(s)
- M L Ferlin
- Universidade de São Paulo (USP), São Paulo, SP, Brazil
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10
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Abstract
Ninety four neonates with hypoxic ischemic encephalopathy HIE attended at the University of Ribeirão Preto since 1982 were studied in terms of the neurological alterations during the acute phase and outcome over a mean period of 47 months. From 43 newborns with HIE I, 40 recovered within 96 hours and 3 died. Among 40 infants with HIE II, 37.5% recovered within the first week, and the others continued abnormal beyond the 7th day. All 11 infants with HIE III died before the second month of life. The HIE I group had no motor sequelae. Among the HIE II group, 34.5% showed cerebral palsy and 17.7% neuromotor retardation. 80.0% of those with sequelae persisted abnormal beyond 7th day of life, during the acute phase of the HIE. Epilepsy occurred in 17.5% of cases with HIE grade II, only among those with neuromotor sequelae. The IQ test did not show statistically significant difference between the HIE I, II without motor sequelae and the control groups. The authors reaffirm the value of the findings in the acute phase of HIE on the outcome of these patients.
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Affiliation(s)
- C A Funayama
- Departamento de Neurologia, Psiquiatria e Psicologia Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (FMRP/USP), Brasil
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11
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Damião AO, Sipahi AM, Vezozzo DP, Gonçalves AL, Habr-Gama A, Teixeira MG, Fukushima JT, Laudanna AA. Effects of colectomy on gallbladder motility in patients with ulcerative colitis. Dig Dis Sci 1997; 42:259-64. [PMID: 9052503 DOI: 10.1023/a:1018841213480] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In order to gain insight into the possible mechanisms involved in gallstone formation in colectomized ulcerative colitis patients, we studied gallbladder motility by means of ultrasonography in three groups of subjects: controls (N = 40) and ulcerative colitis patients without (N = 30) and with (N = 20) colectomy. Impaired gallbladder emptying after a liquid fatty meal stimulus was observed in ulcerative colitis patients with colectomy compared with those obtained in ulcerative colitis patients without colectomy and controls (P = 0.001). The maximum percentage of gallbladder emptying also, was significantly lower (59.8%) than those seen in ulcerative colitis patients without colectomy (74.5%) and controls (77.8%) (P = 0.001). Diminished gallbladder emptying with ensuing stasis might be a contributory factor to the increased prevalence of gallstones in colectomized patients.
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Affiliation(s)
- A O Damião
- Department of Gastroenterology, University of São Paulo (USP) Medical School, Brazil
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12
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Yamamoto AY, Gonçalves AL, Figueiredo LT, Carlucci RH. [Clinical aspects of children presenting specific IgM antibodies to cytomegalovirus by immunofluorescent test]. J Pediatr (Rio J) 1994; 70:215-9. [PMID: 14688859 DOI: 10.2223/jped.713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Clinical data observed in 25 children presenting IgM specific antibodies to cytomegalovirus (CMV) by immunofluorescent test are reported. The children were grouped by the presented clinical picture in: neonatal hepatitis, mononucleosis syndrome,pneumonitis, neurologic disease, ocular abnormalities, and thrombocytopenic purpure. Clinical aspects of CMV infection were analyzed and compared with data reported in the literature. CMV infections can involve multiple organs and this viral disease must to be considered on differential diagnosis of many infectious diseases.
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Affiliation(s)
- A Y Yamamoto
- Departmento de Pediatria e Puericultura da Faculdade de Medicina de Ribeirão Preto-USP, Ribeirã Preto, SP, Brazil
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13
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Fiori RM, Gonçalves AL, Segre CA, Lopes JM, Marino WT. [Surfactant replacement therapy: a multicentric trial comparing two dosage approaches]. J Pediatr (Rio J) 1994; 70:152-6. [PMID: 14688868 DOI: 10.2223/jped.770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
This is an interim analysis of a multicentric trial that took place in 7 Neonatal Units to compare two initial doses of exigenous pulmonary surfactant (100 mg/kg and 200 mg/kg of phospholipids)by using a porcine surfactant for the treatment of very severe Hyaline Membrane Disease. The initial higher dose produced better oxigenation of arterial blood, reducing the time in high oxygen concentrations,while retreatments were necessary in less than half of the infants receiving 200 mg/kg as initial dose. The protocol of this study allowed the administration of additional doses only when FiO(2) was equal or greater than 0.40 instead of > 0.21, as in a large study recently published, where the same initial doses were given. This resulted in more than 40% reduction in the amount of surfactant administered,with apparently similar clinical outcome.
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Affiliation(s)
- R M Fiori
- Departmento de Pediatria, PUCRS, and Serviçios de Neonatologia do Hospital São Lucas e Mãe de Deus, Porto Alegre, RS
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14
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Abstract
Premature neonates fed ultrasonically homogenized human milk had better weight gain and triceps skin-fold thickness than did a control group given untreated human milk (p < 0.01) and also had lower fat loss during tube feeding (p < 0.01). Ultrasonic homogenization of human milk appears to minimize loss of fat and thus allows better growth of premature infants.
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Affiliation(s)
- M R Rayol
- Department of Pediatrics, University of São Paulo Medical School at Ribeirão Prêto, Brazil
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15
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de Souza JB, Gonçalves AL, Mucillo G. [Longitudinal study of weight gain in premature infants from birth to the 6th post-term month]. Rev Saude Publica 1992; 26:350-5. [PMID: 1342525 DOI: 10.1590/s0034-89101992000500009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The dynamics of weight gain were studied in 95 preterm adequate for gestational age infants between birth and their 6th post-term month. The infants were divided into 4 groups according to the number of weeks of gestation at birth, i.e., 33, 34, 35 and 36 weeks, respectively. To compare the results, weight gains were studied for each group of the same corrected ages up to the 64th week of post-menstrual age, corresponding to the 6th post-term month. Weight gain was small during the first 2 weeks of post-natal life but increased considerably over the subsequent weeks with an almost constant periodical increment (GRI) being maintained in all 4 groups during the first months of life. However, unit growth rate (UGR) reached its highest value during the first post-natal month and decreased a similarly in all 4 groups during the subsequent months, with values approximating to those reported for infants in developed countries.
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Affiliation(s)
- J B de Souza
- Departamento Materno-Infantil da Universidade Federal da Pariba, Brasil
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16
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Abstract
The present situation regarding the breast feeding of children born with a weight of 2,500 grammes or less (LWB) at the Hospital das Clínicas of the Medical School of the Universidade de S. Paulo in Ribeirão Preto (Brazil) was studied. The study was descriptive and the data were obtained through a longitudinal follow-up carried over the period from October 1985 to September 1986 inclusive. Of the 222 children included in the study, 30 (13.5%) infants were not breastfed. Thus the incidence of breast feeding among this population was of 86.5%. At 3 months 62.5% of these infants were still being breastfed. At 6 months this figure fell to 38.5% and only 25.0% were still being breast-fed at the end of 12 months. The average duration of breast feeding for the 192 children that had started it was of 4 months. An association was found between the level of literacy of the mothers and the duration of breast feeding. Birthweight was found to be associated with the incidence and duration of breast feeding in general, as well as with the incidence of exclusive breast feeding. These data are considerably lower than recent figures obtained from the populations of well-developed countries, especially than those of Finnish infants born with a weight of less than 1.500 g. Action programmes involving the community and/or the Institution must be implemented in order to improve these figures.
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Affiliation(s)
- C C Xavier
- Departamento de Pediatria da Faculdade de Medicina da Universidade Federal de Minas Gerais, Brasil
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17
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Mussi-Pinhata M, Gonçalves AL. Serum immunoglobulin levels and incidence of infection during the first year of life in full-term and preterm infants. J Trop Pediatr 1989; 35:147-53. [PMID: 2810457 DOI: 10.1093/tropej/35.4.147] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
IgG, IgM, and IgA concentrations from birth to 12 months of age, and the incidence of acute infectious processes were determined in 25 full-term and in 26 preterm infants by the single radioimmunodiffusion technique in a prospective study. Infants born at term showed significantly higher IgG levels than preterm babies up to 2 months of age (P less than 0.05) and the frequency of preterm babies with one or more acute infectious episodes during the same period of time was higher, mainly owing to pulmonary, oral mucosa, and ocular infections. The frequency of children with six or seven infectious episodes was also higher in the preterm group (P less than 0.05). IgM and IgA levels did not differ between groups. Even though preterm infants did not show serious bacterial disease or inability to produce antibodies, the incidence of infectious processes was higher in this group up to 2 months of age, a period during which serum IgG levels were lower than in the group of children born at term.
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18
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Barreto SM, da Costa JC, Gonçalves AL. [Research of syphilis and toxoplasmosis antibodies in newborn infants in a hospital of Ribeirão Preto, SP, Brazil]. Rev Saude Publica 1987; 21:55-63. [PMID: 3321389 DOI: 10.1590/s0034-89101987000100009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Foram aplicados testes para pesquisa dos níveis de IgM (por imunodifusão radial simples) e de anticorpos para sífilis (FTA- ABS-IgG e IgM, VDRL e Wassermann (W) e toxoplasmose (imunofluorescência IgG (IFI-IgG) e IgM (IFI-IgM) em 408 casos de recém-nascidos (RN) do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (Brasil), escolhidos casualmente no período de 01/07 a 09/10/198 1. O fator reumatóide (FR) foi pesquisado para excluir resultados falso-positivos para anticorpos classe IgM. Os soros IFI-IgG positivos, e eventualmente falso-negativos à IFI-IgM para toxoplasmose, foram tratados por cromatografía em gel. Um soro positivo para FR foi tratado com gamaglobulina humana agregada pelo calor antes da pesquisa de anticorpos IgM. Confrontou-se os soros reagentes para sífilis com dados de prontuários dos respectivos RN e mães. Foram reagentes a pelo menos um dos testes para sífilis 7,0% dos RN; o FTA-ABS-IgG foi positivo em 89,3%, o VDRL em 67,8% e o W em 60,7%. Um soro foi FTA-ABS-IgM reagente. A co-positividade entre FTA-ABS-IgG e VDRL foi 60,7%; entre FTA-ABS-IgG e W 53,6% e entre VDRL e W 60%. A confrontação mostrou que em 53,5% dos RN a sorologia foi positiva ao nascimento, em 3,6% negativa e em 42,9% não havia dados. O seguimento clínico-sorológico revelou que 2 RN evoluíram com sinais de lues congênita e outros 2 a suspeita clínica foi descartada pela sorologia de controle; em 21 não havia dados. Foram reagentes à IFI-IgG para toxoplasmose 71,3% dos RN e 100% não reagentes à IFI-IgM antes e após a cromatografia. No período estudado não houve diagnóstico clínico de toxoplasmose congênita. Três RN apresentaram valores de IgM aumentados, mas não houve diagnóstico clínico ou laboratorial de lues ou toxoplasmose congênitas nos mesmos. Sugere-se a nível local introdução do FTA-ABS-IgG para triagem mais abrangente da sífilis congênita.
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19
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Abstract
The objective of this research was to study the composition of human milk in terms of protein levels and levels of the electrolytes sodium, potassium, calcium, magnesium, phosphorus and chloride in colostrum 48-72 hours post-partum, and in the transition milk (96 +/- 9 hours, 120 +/- 9 hours and 144 +/- 9 hours post-partum) of mothers who had fullterm and pre-term deliveries. The mothers were kept in the hospital with the objective to control a few important lactation parameters such as exercising or resting conditions, sleep, nutrition and suckling stimulation. Only low socioeconomic level mothers took part in the study. The initial period of lactation was studied because this is the time when secretion suffers rapid changes, going from colostrum to transition milk, and then to mature milk. The results observed for the different times and for the two groups were compared both within and between groups. No significant differences were obtained for any of the comparisons, except for transitory oscillations in potassium, calcium, chloride and phosphorus levels observed within groups. In general, it can be said that there was no variation between colostrum and transition milk for the mothers who delivered at full term or pre-term. No differences were found either when the groups were compared at the different times post-partum. This means that, under the conditions used in this study, milk did not vary as its type naturally changed (from colostrum to transition milk) for the two groups and that the levels of the constituents studied also remained unchanged when studied as a function of full-term or pre-term delivery.(ABSTRACT TRUNCATED AT 250 WORDS)
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20
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Barreto SM, Gonçalves AL, da Costa JC. [Wassermann reaction in pregnant women in the Hospital de Ribeirão Preto (Brazil) 1976-1981]. Rev Saude Publica 1985; 19:108-22. [PMID: 4089508 DOI: 10.1590/s0034-89101985000200002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Foi realizado levantamento da incidência de reação de Wassermann positiva (método de Wadsworth, Maltaner e Maltaner) em gestantes e parturientes do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (Brasil), no período de 1976 a 1981, com o objetivo de verificar sua incidência e distribuição anual e relacionar os resultados com idade, cor, procedência e evolução das parturientes com sorologia positiva. Neste período foram atendidas 16.290 gestantes, das quais 710 (4,4%) eram W+. Destas, 39 abortaram e 671 se tornaram parturientes, tendo 497 delas dado à luz no hospital pesquisado. Cerca de 70% das gestantes eram brancas e 30% não-brancas, com incidência de W+ de 3,5% nas primeiras e 6,3% nas não-brancas. A maioria delas procedeu de Ribeirão Preto-SP e apresentaram incidência ligeiramente maior que as de outros municípios. A faixa etária de 26-30 anos foi a mais atingida (5,1%). Quanto à incidência anual, verificou-se aumento de casos no 29 triênio (1979-1981) em relação ao triênio anterior. Das 497 parturientes W+ que deram à luz neste hospital 70% delas fizeram pré-natal, mas apenas 40% foram tratadas durante a gestação. Entre as tratadas, a ocorrência de casos de lues congênita confirmados ou suspeitos foi de 20%, enquanto nas não-tratadas foi de 61%, não se evidenciando menor acometimento dos conceptos das multigestas em relação às primigestas ou secundigestas. Apesar de ter-se verificado que o maior percentual de gestantes W+ correspondia às não-brancas na faixa etária de 26-30 anos, os percentuais dos demais grupos não foram desprezíveis. Assim sendo, não se conseguiu obter o perfil preponderante das mães com lues neste Serviço, recomendando-se a investigação sistemática desta infecção em todas as gestantes e parturientes, visto que sua incidência aumentou nos últimos anos deste período de estudo.
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21
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Giugliani ER, Jorge SM, Gonçalves AL. Serum vitamin B12 levels in parturients, in the intervillous space of the placenta and in full-term newborns and their interrelationships with folate levels. Am J Clin Nutr 1985; 41:330-5. [PMID: 3969940 DOI: 10.1093/ajcn/41.2.330] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Serum vitamin B12 levels were determined in a group of 51 parturients as well as in their babies and placentas. The results obtained showed that newborns had 2.3 times higher vitamin B12 levels than their mothers and that the concentrations of this vitamin in the intervillous space of the placenta was 1.3- and 3.2-fold those encountered in the blood of newborns and mothers, respectively. These findings indicate that vitamin B12 accumulation by the placenta may represent an important factor in providing sufficient amount of this essential nutrient to the fetus. The relationship between folate and vitamin B12 concentration in the maternal, fetal and placental sera was also investigated. The highly significant correlation coefficient encountered and significantly higher serum folate concentrations in the group of parturients who received vitamin B12 supplementation during pregnancy indicate a close metabolic interrelationship between vitamin B12 and folate.
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Giugliani ER, Jorge SM, Gonçalves AL. Serum and red blood cell folate levels in parturients, in the intervillous space of the placenta and in full-term newborns. J Perinat Med 1985; 13:55-9. [PMID: 4009385 DOI: 10.1515/jpme.1985.13.2.55] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Folates, essential nutrients for man, are especially important during gestation. Serum and red blood cell folate levels were measured in 51 parturients and in their respective placentas and concepts, with the objective to further elucidate the mechanisms of folate transfer from mother to fetus. The interrelationships between the three compartments with respect to folate levels were also studied (Tab. I). Serum and red blood cell folates were measured by radioimmunoassay in samples of venous blood from the mother, from the intervillous space of the placenta, and from the umbilical cord. Higher folate levels were detected in newborns than in their mothers both in serum (3.9 times) and red blood cells (2.3 times). Serum folate levels were higher in the intervillous space of the placenta than in newborns (1.3 times) or mothers (4.5 times) Fig. 1, 2). These data suggest that the placenta concentrates folates, thus offering high concentrations of this vitamin to the fetus. It is possible that folate-binding proteins existing in the placenta participate in the mechanism of folate concentration in this organ. However, despite the existence of a transfer mechanism that benefits the fetus, a significant positive correlation was observed between serum folate levels of mothers, newborns and placentas.
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23
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Martinez FE, Jorge SM, Gonçalves AL, Desai ID. Evaluation of plasma tocopherols in relation to hematological indices of Brazilian infants on human milk and cows' milk regime from birth to 1 year of age. Am J Clin Nutr 1984; 39:969-74. [PMID: 6720625 DOI: 10.1093/ajcn/39.6.969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A study was carried out to evaluate the effects of a human milk and cows' milk regime on plasma tocopherols and hematological status of 176 Brazilian infants from birth to 12 months of age. Plasma total tocopherols and the ratio of tocopherols/total lipids were significantly higher (p less than 0.01) for breast-fed infants than for cows' milk-fed infants at all ages. Hydrogen peroxide-stimulated erythrocyte hemolysis was greater for cows' milk-fed infants than breast-fed infants; the difference was statistically significant (p less than 0.01) at 3, 6, and 9 months of age. Among the hematological indices examined, Hb levels were significantly higher (p less than 0.01) for the breast-fed infants at 3 and 12 months, while the reticulocyte counts were significantly higher for the cows' milk-fed infants at all ages; hematocrit values more or less remained similar for both groups. It is concluded from these results that although a human milk regime is ideal as compared to a cow's milk regime for maintaining adequate vitamin E status during the 1st year of early life, there may be other influencing factors besides vitamin E to explain such differences in the hematological indices of the breast-fed and cows' milk fed-Brazilian infants.
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Giugliani ER, Jorge SM, Gonçalves AL. Folate and vitamin B12 deficiency among parturients from Porto Alegre, Brazil. Rev Invest Clin 1984; 36:133-6. [PMID: 6484331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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25
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Granzotti JA, Dos Santos JL, Jorge SM, Gonçalves AL, Monici R. [Rare congenital cardiopathy]. Rev Paul Med 1978; 91:71-2. [PMID: 674990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Leite EV, Gonçalves AL, da Costa DG, da Costa Filho RL, Podkameni N. [Comparison between ornidazole and metronidazole: double blind clinical therapeutical trial in intestinal giardiasis]. Rev Inst Med Trop Sao Paulo 1976; 18:28-35. [PMID: 778976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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