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dos Reis LL, de Souza LSS, Braga FCDO, Lima DCDS, Lima NADS, Padinha JDS, Nava AFD, Vicente ACP. Zoonotic Giardia duodenalis assemblage A in northern sloth from Brazilian Amazon. Mem Inst Oswaldo Cruz 2023; 118:e230088. [PMID: 37971095 PMCID: PMC10644951 DOI: 10.1590/0074-02760230088] [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: 05/18/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND The parasite Giardia duodenalis infects a wide range of vertebrate hosts, including domestic and wild animals as well as humans. Giardia is genotyped into eight assemblages (A-H). Zoonotic assemblages A and B have already been identified in humans and wild and domestic animals (non-human primates and cats) from Brazilian Amazon and in the world. Due to its zoonotic/zooanthroponotic nature, surveillance initiatives and the definition of Giardia assemblages are important in order to characterise the epidemiological scenario and to implement further control measures. OBJECTIVES Determine assemblages of G. duodenalis in sloths from the Brazilian Amazon Region. METHODS Faecal parasitological examination of sloths from Amazonas State. Polymerase chain reaction (PCR) targeting the beta giardin (BG), and genes from multilocus sequence typing (MLST) scheme, amplicon sequencing and phylogenetic analysis. FINDINGS Here, we identified, by microscopy, Giardia in two northern sloths (Bradypus tridactylus). These two samples were submitted to molecular assays and it was revealed that both were infected by G. duodenalis assemblage A. Phylogenetic analysis showed that they belong to assemblage A within sequences from humans and wild and domestic animals. CONCLUSION Therefore, besides showing, by the first time, the current presence of this parasite in sloths, our findings reveals that this wild animal species would be part of the zoonotic/zooanthroponotic scenario of this parasite in the Brazilian Amazon.
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Affiliation(s)
- Lisiane Lappe dos Reis
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Programa de Pós-Graduação em Biologia Parasitária, Rio de Janeiro, RJ, Brasil
| | - Lirna Salvioni Silva de Souza
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brasil
| | - Francisco Carlos de Oliveira Braga
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brasil
| | - Dayane Costa de Souza Lima
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brasil
| | | | - Jessica da Silva Padinha
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brasil
| | - Alessandra Ferreira Dales Nava
- Fundação Oswaldo Cruz-Fiocruz, Instituto Leônidas & Maria Deane, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brasil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
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Fonseca ÉL, Morgado SM, Freitas FS, Bighi NS, Cipriano R, Vicente ACP. Unveiling the genome of a high-risk pandrug-resistant Klebsiella pneumoniae emerging in the Brazilian Amazon Region, 2022. Mem Inst Oswaldo Cruz 2023; 118:e230081. [PMID: 37909500 PMCID: PMC10626633 DOI: 10.1590/0074-02760230081] [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: 05/08/2023] [Accepted: 10/05/2023] [Indexed: 11/03/2023] Open
Abstract
BACKGROUND Pandrug-resistant (PDR) Klebsiella pneumoniae has been reported sporadically in many countries and remains rare in Brazil. OBJECTIVES This study unravelled the genetic determinants involved with the PDR background of a clinical ST11 K. pneumoniae recovered in the Brazilian Amazon Region, where K. pneumoniae genomic and epidemiological information is scarce. METHODS Kp196 was submitted to the antimicrobial susceptibility test by the disk-diffusion method and minimum inhibitory concentration (MIC) determination. The whole genome sequencing was obtained and the sequence type was determined by core genome multilocus sequence typing (cgMLST). Its intrinsic and acquired resistome was assessed by Comprehensive Antibiotic Resistance Database (CARD) and comparison with wild-type genes. FINDINGS The analyses revealed that Kp196 belonged to the pandemic ST11 and presented the PDR phenotype. Its acquired resistome was composed of a huge set of clinically relevant resistance determinants, including bla CTX-M-15 and bla NDM-1, all found in the vicinity of mobile platforms. Considering its intrinsic resistome, the multidrug resistance, especially to colistin, tigecycline and fluoroquinolones, was multifactorial and attributed to modifications (indels, missense mutations, and gene disruption) in several housekeeping genes (arnT/phoQ/mgrB/ramR/acrB/gyrA/parC/ompK35-36-37). The Kp196 intrinsic resistome was also observed in a ST11 environmental strain, although harbouring distinct acquired resistomes. CONCLUSIONS An accumulation of different resistance mechanisms regarding the intrinsic resistome accounts for a more stable resistome, strongly contributing to the Kp196 PDR phenotype.
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Affiliation(s)
- Érica Lourenço Fonseca
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Sérgio M Morgado
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Fernanda S Freitas
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Nathalia S Bighi
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | | | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
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Fonseca ÉL, Morgado SM, Freitas F, Oliveira PPC, Monteiro PM, Lima LS, Santos BP, Sousa MAR, Assunção AO, Mascarenhas LA, Vicente ACP. Persistence of a carbapenem-resistant Acinetobacter baumannii (CRAB) International Clone II (ST2/IC2) sub-lineage involved with outbreaks in two Brazilian clinical settings. J Infect Public Health 2023; 16:1690-1695. [PMID: 37639945 DOI: 10.1016/j.jiph.2023.08.014] [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: 06/05/2023] [Revised: 07/18/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Acinetobacter baumannii international clone II (IC2) is a widespread pandemic clone, however, it is rarely described in South America. The present study reported an outbreak caused by XDR IC2 strains in a clinical setting in Rio de Janeiro in 2022. METHODS Molecular epidemiology analysis was conducted with MLST to determine the clonal relationship and to assign a sequence type. The antimicrobial resistance profile of A. baumannii strains was assessed by the disk-diffusion method and MIC determination, and the presence of antibiotic resistance genes was determined by PCR and Sanger sequencing. The whole genome of one representative strain (AB91) was sequenced to prospect its resistome and virulome. RESULTS The MLST revealed that all strains belonged to the ST2 (Pasteur scheme) that corresponded to the pandemic IC2 lineage. They presented the XDR phenotype, which was compatible with their resistome composed of several acquired resistance genes and altered housekeeping genes. Additionally, an expressive virulome was revealed in AB91 genome. Genomic comparison with the unique other available IC2 genome from Brazil revealed that outbreaks occurring during (São Paulo - 2020/2021) and after (Rio de Janeiro - 2022) COVID-19 pandemics were caused by the same IC2 lineage. CONCLUSIONS This study suggests that the presence of a huge arsenal of resistance and virulence genes may have contributed to the persistence and the successful establishment of IC2 in Brazilian clinical settings during and after the COVID-19 pandemics in response to a series of events, such as the antibiotic overused during that period.
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Affiliation(s)
- Érica Lourenço Fonseca
- Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, FIOCRUZ, Rio de Janeiro, Brazil.
| | - Sérgio Mascarenhas Morgado
- Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, FIOCRUZ, Rio de Janeiro, Brazil
| | - Fernanda Freitas
- Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, FIOCRUZ, Rio de Janeiro, Brazil
| | - Priscila P C Oliveira
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Priscila M Monteiro
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Lorena S Lima
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Bianca P Santos
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Maria Aparecida R Sousa
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Adriana O Assunção
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Luís Affonso Mascarenhas
- Hospital Infection Control Committee, Hospital São Francisco na Providência de Deus, Rio de Janeiro, Brazil
| | - Ana Carolina Paulo Vicente
- Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, FIOCRUZ, Rio de Janeiro, Brazil
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Dos Reis LL, Lima DCDS, da Silva TRR, Braga FCDO, Nava AFD, Vicente ACP. Circulation of Giardia duodenalis in domestic and wild animals from Amazon region: a Systematic Review. Acta Trop 2022; 237:106708. [PMID: 36195184 DOI: 10.1016/j.actatropica.2022.106708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 10/06/2022]
Abstract
Giardia is an ubiquitous protozoa that infect a broad range of vertebrate hosts, including domestic and wild animals as well as humans. Giardia duodenalis is one of the most common parasite in humans and mammals worldwide. Human giardiasis is highly prevalent in the countries that make up from Amazon. The identification of genotypes in humans and animals improves the understanding of transmission routes and the control strategies. Thus, we carried out a systematic review on Giardia in animals from Amazon region/South American, following the PRISMA guidelines. Studies up to September, 2022 were searched for in public database. A total of seven out of 432 articles were selected: four, two and one from Brazil, Colombia and Peru, respectively. Based on these articles it is seen that the G. duodenalis cosmopolitan assemblages A and B prevail within domestic and wild animals in the Amazon. Moreover, a Giardia microscopic screening in aquatic animals from this biome showed its prevalence among aquatic mammals including the endangered species Trichechus inunguis (manatee). Therefore, a yet not accessed number of susceptible hosts, new G. duodenalis assemblages and species can be occurring in this huge hotspot of biodiversity that is Amazon region.
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Affiliation(s)
- Lisiane Lappe Dos Reis
- Instituto Leônidas & Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brazil; Programa de Pós-graduação Stricto Sensu em Biologia Parasitária, Instituto Oswaldo Cruz/IOC/FIOCRUZ, Rio de Janeiro, RJ, Brazil..
| | - Dayane Costa de Souza Lima
- Instituto Leônidas & Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brazil
| | - Túllio Romão Ribeiro da Silva
- Instituto Leônidas & Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil
| | - Francisco Carlos de Oliveira Braga
- Instituto Leônidas & Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Diversidade Microbiana da Amazônia de Importância para a Saúde, Manaus, AM, Brazil
| | - Alessandra Ferreira Dales Nava
- Instituto Leônidas & Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil
| | - Ana Carolina Paulo Vicente
- Instituto Oswaldo Cruz/IOC/FIOCRUZ, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brazil
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Gomes YCP, Freitas NL, Souza FS, Sandim V, Pereira DA, Nogueira FCS, Echevarria-Lima J, Leite ACCB, Lima MASD, Silva MTT, Araújo AQC, Vicente ACP, Espíndola OM. Chitotriosidase 1 in the cerebrospinal fluid as a putative biomarker for HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) progression. Front Immunol 2022; 13:949516. [PMID: 36052089 PMCID: PMC9424492 DOI: 10.3389/fimmu.2022.949516] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Human T-lymphotropic virus type 1 (HTLV-1)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is an inflammatory neurodegenerative disease that affects motor, urinary, intestinal, and sensory functions. Typically, HAM/TSP is slowly progressive, but it may vary from limited motor disability after decades (very slow progression) to loss of motor function in a few years from disease onset (rapid). In this study, we aimed to identify prognostic biomarkers for HAM/TSP to support patient management. Thus, proteomic analysis of the cerebrospinal fluid (CSF) was performed with samples from HTLV-1 asymptomatic carriers (AC) (n=13) and HAM/TSP patients (n=21) with rapid, typical, and very slow progression using quantitative label-free liquid chromatography/tandem mass spectrometry. Enrichment analyses were also carried out to identify key biological processes associated with distinct neurological conditions in HTLV-1 infection. Candidate biomarkers were validated by ELISA in paired CSF and serum samples, and samples from HTLV-1-seronegative individuals (n=9) were used as controls. CSF analysis identified 602 proteins. Leukocyte/cell activation, immune response processes and neurodegeneration pathways were enriched in rapid progressors. Conversely, HTLV-1 AC and HAM/TSP patients with typical and very slow progression had enriched processes for nervous system development. Differential expression analysis showed that soluble vascular cell adhesion molecule 1 (sVCAM-1), chitotriosidase 1 (CHIT1), and cathepsin C (CTSC) were upregulated in HAM/TSP. However, only CHIT1 was significantly elevated after validation, particularly in HAM/TSP rapid progressors. In contrast, none of these biomarkers were altered in serum. Additionally, CSF CHIT1 levels in HAM/TSP patients positively correlated with the speed of HAM/TSP progression, defined as points in the IPEC-2 HAM/TSP disability scale per year of disease, and with CSF levels of phosphorylated neurofilament heavy chain, neopterin, CXCL5, CXCL10, and CXCL11. In conclusion, higher CSF levels of CHIT1 were associated with HAM/TSP rapid progression and correlated with other biomarkers of neuroinflammation and neurodegeneration. Therefore, we propose CHIT1 as an additional or alternative CSF biomarker to identify HAM/TSP patients with a worse prognosis.
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Affiliation(s)
- Yago Côrtes Pinheiro Gomes
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- *Correspondence: Otávio Melo Espíndola, ; Yago Côrtes Pinheiro Gomes,
| | - Nicole Lardini Freitas
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Flávia Santos Souza
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Vanessa Sandim
- Institute of Medical Biochemistry Leopoldo de Meis (IBqM), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Denise Abreu Pereira
- Program of Cellular and Molecular Oncobiology (POCM), National Institute of Cancer (INCA), Rio de Janeiro, Brazil
| | - Fábio César Sousa Nogueira
- Laboratory of Proteomics, Laboratory for the Support of Technological Development (LADETEC), Institute of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Proteomics Unit, Institute of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Juliana Echevarria-Lima
- Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | | | | | - Marcus Tulius Teixeira Silva
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Abelardo Queiroz Campos Araújo
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | | | - Otávio Melo Espíndola
- Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- *Correspondence: Otávio Melo Espíndola, ; Yago Côrtes Pinheiro Gomes,
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Conteville LC, Vicente ACP. A plasmid network from the gut microbiome of semi-isolated human groups reveals unique and shared metabolic and virulence traits. Sci Rep 2022; 12:12102. [PMID: 35840779 PMCID: PMC9287393 DOI: 10.1038/s41598-022-16392-z] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 07/08/2022] [Indexed: 11/29/2022] Open
Abstract
The plasmids in gut microbiomes have the potential to contribute to the microbiome community, as well as human health and physiology. Nevertheless, this niche remains poorly explored. In general, most microbiome studies focus on urban-industrialized groups, but here, we studied semi-isolated groups from South America and Africa, which would represent a link between ancestral and modern human groups. Based on open metagenomic data, we characterized the set of plasmids, including their genes and functions, from the gut microbiome of the Hadza, Matses, Tunapuco, and Yanomami, semi-isolated groups with a hunter, gather or subsistence lifestyle. Unique plasmid clusters and gene functions for each human group were identified. Moreover, a dozen plasmid clusters circulating in other niches worldwide are shared by these distinct groups. In addition, novel and unique plasmids harboring resistance (encompassing six antibiotic classes and multiple metals) and virulence (as type VI secretion systems) genes were identified. Functional analysis revealed pathways commonly associated with urban-industrialized groups, such as lipopolysaccharide biosynthesis that was characterized in the Hadza gut plasmids. These results demonstrate the richness of plasmids in semi-isolated human groups’ gut microbiome, which represents an important source of information with biotechnological/pharmaceutical potential, but also on the spread of resistance/virulence genes to semi-isolated groups.
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Affiliation(s)
- Liliane Costa Conteville
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
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Silva TRRD, Narzetti LHDA, Crainey JL, Costa CH, Santos YVSD, Leles LFDO, Pessoa FAC, Vicente ACP, Luz SLB. Molecular detection of Mansonella mariae incriminates Simulium oyapockense as a potentially important bridge vector for Amazon-region zoonoses. Infect Genet Evol 2022; 98:105200. [PMID: 34990852 DOI: 10.1016/j.meegid.2021.105200] [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] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To assess the emergent zoonotic disease risk posed by the voracious human-biting blackfly species Simulium oyapockense in the peripheral regions of an expanding urban centre situated deep in the Brazilian Amazon rainforest. METHODS We performed nine human landing catches at three periurban sites surrounding the Brazilian Amazon town of São Gabriel da Cachoeira. Using the detection of non-human primate filarial parasites as an indicator of the zoonotic disease threat posed by a biting insect, we screened 3328 S. oyapockense blackflies for the presence of zoonotic filarial DNA with an ITS-1 PCR assay and Sanger sequencing. RESULTS Between 98 and 100% of the biting insects captured during our nine collections were identified as S. oyapockense; at our three collection sites and during our three seasonally-distinct collections this species was captured at rates between 28 and 294 blackflies per hour. PCR screening of the march-collected S. oyapockense detected infectious-stage (L3) Mansonella mariae parasites (which are only known to infect non-human primates) in >0.15% of the tested head samples. CONCLUSIONS Our results show that residents of the periurban regions of São Gabriel da Cachoeira are routinely exposed to the bites of S. oyapockense blackflies which have previously fed on non-human primates.
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Affiliation(s)
- Túllio Romão Ribeiro da Silva
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil; Programa de Pós-graduação Stricto Sensu em Biologia Parasitária, Instituto Oswaldo Cruz/IOC/FIOCRUZ, Rio de Janeiro, RJ, Brazil
| | - Luiz Henrique de Aquino Narzetti
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil; Programa Institucional de Bolsas de Iniciação Científica (PIBIC), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil
| | - James Lee Crainey
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil.
| | - Carlos Henrique Costa
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil; Programa de Pós-graduação Stricto sensu em Biologia Computacional e Sistemas do Instituto Oswaldo Cruz (PGBCS/IOC/Fiocruz), Brazil
| | - Yago Vinícius Serra Dos Santos
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil; Programa de Pós-Graduação Stricto Sensu em Biologia da Interação Patógeno Hospedeiro (PPGBIO-Interação), Instituto Leônidas e Maria Deane/ ILMD/Fiocruz Amazônia, Manaus, AM, Brazil
| | - Lorena Ferreira de Oliveira Leles
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil; Programa de Pós-Graduação Stricto Sensu em Biologia da Interação Patógeno Hospedeiro (PPGBIO-Interação), Instituto Leônidas e Maria Deane/ ILMD/Fiocruz Amazônia, Manaus, AM, Brazil
| | - Felipe Arley Costa Pessoa
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil
| | - Ana Carolina Paulo Vicente
- Instituto Oswaldo Cruz/IOC/FIOCRUZ, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brazil
| | - Sérgio Luiz Bessa Luz
- Instituto Leônidas e Maria Deane/ILMD/Fiocruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, AM, Brazil
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Blanco S, Barile ME, Frutos MC, Vicente ACP, Gallego SV. Neurodegenerative disease in association with sexual transmission of human T-cell lymphotropic virus type 2 subtype b in Argentina. Trans R Soc Trop Med Hyg 2021; 116:622-627. [PMID: 34791493 DOI: 10.1093/trstmh/trab173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/22/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The aim of this study is to show that human T-cell lymphotropic virus type 2 (HTLV-2) infection produces symptoms resembling those described for HTLV-1-associated myeloneuropathy and to highlight the role of sexual transmission in the silent dissemination of HTLV-2. METHODS Patient samples were tested by particle agglutination and indirect immunofluorescence assay. The HTLV type was defined by molecular techniques. Nucleotide sequence analysis of HTLV-2 long terminal repeat region, T cell CD3/CD4 and T cell CD3/CD8 counts and typing of human leucocyte antigen (HLA) alleles A, B, C and DRB1 were also performed. RESULTS HTLV-2 subtype b infection was confirmed in two blood donors and their sexual partners. Two patients exhibited distinctive signs and symptoms of progressive neurological disease. Three infected patients carried HLA-C*04. Both patients with neurological disease also carried HLA-A*31 and HLA-DRB1*07 alleles. CONCLUSIONS Herein we describe for the first time sexual transmission of HTLV-2 in a non-endemic region of Argentina, highlighting the relevance of this transmission route in HTLV-2 silent dissemination out of the clusters of endemicity. We also provide evidence that HTLV-2 infection causes symptoms resembling those described for HTLV-1-associated myeloneuropathy. The evidence presented herein points to the critical need for public health strategies to reduce the spread of this neglected infection.
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Affiliation(s)
- Sebastián Blanco
- Fundación Banco Central de Sangre, Córdoba, 5000, Argentina.,Instituto de Virología Dr J M Vanella, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | | | - María Celia Frutos
- Instituto de Virología Dr J M Vanella, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | | | - Sandra Verónica Gallego
- Fundación Banco Central de Sangre, Córdoba, 5000, Argentina.,Instituto de Virología Dr J M Vanella, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
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Gomes YCP, Silva MTT, Leite ACCB, Lima MASD, Araújo AQC, Silva Filho IL, Vicente ACP, Espíndola ODM. Polymorphisms in HTLV-1 Tax-responsive elements in HTLV-1-associated myelopathy/tropical spastic paraparesis patients are associated with reduced proviral load but not with disease progression. J Gen Virol 2021; 102. [PMID: 34494950 DOI: 10.1099/jgv.0.001649] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Human T-lymphotropic virus type 1 (HTLV-1) provirus expression is mainly directed by Tax-responsive elements (TRE) within the long terminal repeats (LTR). Mutations in TRE can reduce provirus expression and since a high proviral load (PVL) is a risk factor for the development of HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP), we evaluated polymorphisms in the 5' LTR and the association with PVL and disease progression. HTLV-1 LTR and tax sequences derived from asymptomatic carriers (AC) and HAM/TSP patients followed in a longitudinal study were analysed according to PVL and clinical severity. Individuals infected with HTLV-1 presenting the canonical TRE, considering strain ATK-1 as the consensus, displayed sustained higher PVL. By contrast, an LTR A125G mutation in TRE was associated with slightly reduced PVL only in HAM/TSP patients, although it did not influence the speed of disease progression. Moreover, this polymorphism was frequent in Latin American strains of the HTLV-1 Cosmopolitan Transcontinental subtype. Therefore, polymorphisms in the 5' TRE of HTLV-1 may represent one of the factors influencing PVL in HAM/TSP patients, especially in the Latin American population. Indeed, higher PVL in the peripheral blood has been associated with an increased inflammatory activity in the spinal cord and to a poorer prognosis in HAM/TSP. However, this event was not associated with TRE polymorphisms.
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Affiliation(s)
- Yago Côrtes Pinheiro Gomes
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Marcus Tulius Teixeira Silva
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Ana Claudia Celestino Bezerra Leite
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Marco Antonio Sales Dantas Lima
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Abelardo Queiroz Campos Araújo
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Isaac Lima Silva Filho
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Ana Carolina Paulo Vicente
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
| | - Otávio de Melo Espíndola
- Laboratory for Clinical Research in Neuroinfections, Evandro Chagas National Institute of Infectious Diseases (INI), Oswaldo Cruz Foundation (FIOCRUZ), Brazil
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10
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Morgado SM, Paulo Vicente AC. Genomics of Atlantic Forest Mycobacteriaceae strains unravels a mobilome diversity with a novel integrative conjugative element and plasmids harbouring T7SS. Microb Genom 2021; 6. [PMID: 32496186 PMCID: PMC7478629 DOI: 10.1099/mgen.0.000382] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mobile genetic elements (MGEs) are agents of bacterial evolution and adaptation. Genome sequencing provides an unbiased approach that has revealed an abundance of MGEs in prokaryotes, mainly plasmids and integrative conjugative elements. Nevertheless, many mobilomes, particularly those from environmental bacteria, remain underexplored despite their representing a reservoir of genes that can later emerge in the clinic. Here, we explored the mobilome of the Mycobacteriaceae family, focusing on strains from Brazilian Atlantic Forest soil. Novel Mycolicibacterium and Mycobacteroides strains were identified, with the former ones harbouring linear and circular plasmids encoding the specialized type-VII secretion system (T7SS) and mobility-associated genes. In addition, we also identified a T4SS-mediated integrative conjugative element (ICEMyc226) encoding two T7SSs and a number of xenobiotic degrading genes. Our study uncovers the diversity of the Mycobacteriaceae mobilome, providing the evidence of an ICE in this bacterial family. Moreover, the presence of T7SS genes in an ICE, as well as plasmids, highlights the role of these mobile genetic elements in the dispersion of T7SS.
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11
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Terra L, Ratcliffe N, Castro HC, Vicente ACP, Dyson P. Biotechnological Potential of Streptomyces Siderophores as New Antibiotics. Curr Med Chem 2021; 28:1407-1421. [PMID: 32389112 DOI: 10.2174/0929867327666200510235512] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/29/2020] [Accepted: 03/23/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Siderophores are small-molecule iron-chelators produced by microorganisms and plants growing mostly under low iron conditions. Siderophores allow iron capture and transport through cell membranes into the cytoplasm, where iron is released for use in biological processes. These bacterial iron uptake systems can be used for antibiotic conjugation or as targets for killing pathogenic bacteria. Siderophores have been explored recently because of their potential applications in environmental and therapeutic research. They are present in Streptomyces, Grampositive bacteria that are an important source for discovering new siderophores. OBJECTIVE This review summarizes siderophore molecules produced by the genus Streptomyces emphasizing their potential as biotechnological producers and also illustrating genomic tools for discovering siderophores useful for treating bacterial infections. METHODS The literature search was performed using PUBMED and MEDLINE databases with keywords siderophore, secondary metabolites, Trojan horse strategy, sideromycin and Streptomyces. The literature research focused on bibliographic databases including all siderophores identified in the genus Streptomyces. In addition, reference genomes of Streptomyces from GenBank were used to identify siderophore biosynthetic gene clusters by using the antiSMASH platform. RESULTS This review has highlighted some of the many siderophore molecules produced by Streptomyces, illustrating the diversity of their chemical structures and a wide spectrum of bioactivities against pathogenic bacteria. Furthermore, the possibility of using siderophores conjugated with antibiotics could be an alternative to overcome bacterial resistance to drugs and could improve their therapeutic efficacy. CONCLUSION This review confirms the importance of Streptomyces as a rich source of siderophores, and underlines their potential as antibacterial agents.
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Affiliation(s)
- Luciana Terra
- Programa de Pos-Graduacao em Ciencias e Biotecnologia, Instituto de Biologia, UFF, Brazil
| | - Norman Ratcliffe
- Programa de Pos-Graduacao em Ciencias e Biotecnologia, Instituto de Biologia, UFF, Brazil
| | - Helena Carla Castro
- Programa de Pos-Graduacao em Ciencias e Biotecnologia, Instituto de Biologia, UFF, Brazil
| | | | - Paul Dyson
- Institute of Life Science, Swansea University Medical School, Singleton Park, Swansea SA2 8PP, United Kingdom
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12
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Crainey JL, Costa CHA, de Oliveira Leles LF, Ribeiro da Silva TR, de Aquino Narzetti LH, Serra Dos Santos YV, Costa Conteville L, Costa Pessoa FA, Carvajal Cortés JJ, Vicente ACP, Rubio Muñoz JM, Bessa Luz SL. Deep Sequencing Reveals Occult Mansonellosis Coinfections in Residents From the Brazilian Amazon Village of São Gabriel da Cachoeira. Clin Infect Dis 2021; 71:1990-1993. [PMID: 31995172 DOI: 10.1093/cid/ciaa082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/24/2020] [Indexed: 02/02/2023] Open
Abstract
Mansonella ozzardi and Mansonella perstans infections both cause mansonellosis but are usually treated differently. Using a real-time polymerase chain reaction assay and deep sequencing, we reveal the presence of mansonellosis coinfections that were undetectable by standard diagnostic methods. Our results confirm mansonellosis coinfections and have important implications for the disease's treatment and diagnosis.
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Affiliation(s)
- James Lee Crainey
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil
| | - Carlos Henrique Aguiar Costa
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil.,Programa de Pós-graduação Stricto Sensu em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Lorena Ferreira de Oliveira Leles
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil.,Programa de Pós-Graduação Stricto Sensu em Biologia da Interação Patógeno Hospedeiro, Manaus, Brazil
| | - Túllio Romão Ribeiro da Silva
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil.,Programa de Pós-graduação Stricto Sensu em Biologia Parasitária, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Luiz Henrique de Aquino Narzetti
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil
| | - Yago Vinícius Serra Dos Santos
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil.,Programa de Pós-Graduação Stricto Sensu em Biologia da Interação Patógeno Hospedeiro, Manaus, Brazil
| | - Liliane Costa Conteville
- Programa de Pós-graduação Stricto Sensu em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Malaria & Emerging Parasitic Diseases Laboratory, National Microbiology Center, Instituto de Salud Carlos III, Madrid, Spain
| | - Felipe Arley Costa Pessoa
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil
| | - José Joaquin Carvajal Cortés
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil
| | - Ana Carolina Paulo Vicente
- Malaria & Emerging Parasitic Diseases Laboratory, National Microbiology Center, Instituto de Salud Carlos III, Madrid, Spain
| | - José Miguel Rubio Muñoz
- Malaria & Emerging Parasitic Diseases Laboratory, National Microbiology Center, Instituto de Salud Carlos III, Madrid, Spain
| | - Sérgio Luiz Bessa Luz
- Instituto Leônidas e Maria Deane, Fundação Oswaldo Cruz Amazônia, Laboratório de Ecologia de Doenças Transmissíveis na Amazônia, Manaus, Brazil
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13
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Morgado SM, Vicente ACP. Comprehensive in silico survey of the Mycolicibacterium mobilome reveals an as yet underexplored diversity. Microb Genom 2021; 7:mgen000533. [PMID: 33620305 PMCID: PMC8190616 DOI: 10.1099/mgen.0.000533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/28/2021] [Indexed: 11/30/2022] Open
Abstract
The mobilome plays a crucial role in bacterial adaptation and is therefore a starting point to understand and establish the gene flow occurring in the process of bacterial evolution. This is even more so if we consider that the mobilome of environmental bacteria can be the reservoir of genes that may later appear in the clinic. Recently, new genera have been proposed in the family Mycobacteriaceae, including the genus Mycolicibacterium, which encompasses dozens of species of agricultural, biotechnological, clinical and ecological importance, being ubiquitous in several environments. The current scenario in the Mycobacteriaceae mobilome has some bias because most of the characterized mycobacteriophages were isolated using a single host strain, and the few plasmids reported mainly relate to the genus Mycobacterium. To fill in the gaps in these issues, we performed a systematic in silico study of these mobile elements based on 242 available genomes of the genus Mycolicibacterium. The analyses identified 156 putative plasmids (19 conjugative, 45 mobilizable and 92 non-mobilizable) and 566 prophages in 86 and 229 genomes, respectively. Moreover, a contig was characterized by resembling an actinomycete integrative and conjugative element (AICE). Within this diversity of mobile genetic elements, there is a pool of genes associated with several canonical functions, in addition to adaptive traits, such as virulence and resistance to antibiotics and metals (mercury and arsenic). The type-VII secretion system was a common feature in the predicted plasmids, being associated with genes encoding virulent proteins (EsxA, EsxB, PE and PPE). In addition to the characterization of plasmids and prophages of the family Mycobacteriaceae, this study showed an abundance of these genetic elements in a dozen species of the genus Mycolicibacterium.
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14
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dos Reis LL, da Silva TRR, Braga FCDO, do Nascimento NM, de Menezes KML, Nava AFD, Lima NADS, Vicente ACP. Giardiasis in urban and rural Amazonas, Brazil is driven by zoonotic and cosmopolitan A and B assemblages. Mem Inst Oswaldo Cruz 2021; 116:e210280. [PMID: 35195158 PMCID: PMC8860389 DOI: 10.1590/0074-02760210280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 12/28/2021] [Indexed: 11/21/2022] Open
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15
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Puccioni-Sohler M, Grassi MFR, Galvão-Castro B, Caterino A, Proietti ABDFC, Vicente ACP, Galvão-Castro AV, Vallinoto AC, Paiva A, Penalva A, Rosadas C, Miyashiro D, Barbosa EF, Carvalho EMD, Batista EDS, Smid J, Casseb J, Vidal J, Sousa MS, Viana MGDC, Bastos MDS, Lírio M, Boa-Sorte N, Ferreira OC, Takayanagui O, Moura P, Rocco R, Cunha RG, Haddad SK, Assone T, Araújo THA. Increasing awareness of human T-lymphotropic virus type-1 infection: a serious, invisible, and neglected health problem in Brazil. Rev Soc Bras Med Trop 2019; 52:e20190343. [PMID: 31618310 DOI: 10.1590/0037-8682-0343-2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 08/21/2019] [Indexed: 11/22/2022] Open
Affiliation(s)
- Marzia Puccioni-Sohler
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Rio de Janeiro, RJ, Brasil
| | - Maria Fernanda Rios Grassi
- Escola Bahiana de Medicina, Salvador, BA, Brasil.,Fundação Oswaldo Cruz, Instituto Gonçalo Moniz, Salvador, BA, Brasil
| | - Bernardo Galvão-Castro
- Escola Bahiana de Medicina, Salvador, BA, Brasil.,Fundação Oswaldo Cruz, Instituto Gonçalo Moniz, Salvador, BA, Brasil
| | | | | | | | | | | | - Arthur Paiva
- Universidade Federal do Alagoas, Maceió, AL, Brasil
| | - Augusto Penalva
- Instituto de Infectologia Emilio Ribas, São Paulo, SP, Brasil
| | | | | | | | | | - Everton da Silva Batista
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | - Jerusa Smid
- Instituto de Infectologia Emílio Ribas, São Paulo, SP, Brasil
| | - Jorge Casseb
- Instituto de Medicina Tropical da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Jose Vidal
- Instituto de Infectologia Emilio Ribas/ Universidade de São Paulo, São Paulo, SP, Brasil
| | - Maisa Silva Sousa
- Universidade Federal do Pará/ Instituto Evandro Chagas, Belém, PA, Brasil
| | | | | | - Monique Lírio
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | - Ney Boa-Sorte
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina e Cirurgia, Rio de Janeiro, RJ, Brasil
| | | | - Osvaldo Takayanagui
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | | | - Regina Rocco
- Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | | | - Simone Kashima Haddad
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Tatiane Assone
- Instituto de Medicina Tropical da Universidade de São Paulo, São Paulo, SP, Brasil
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16
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Conteville LC, Oliveira-Ferreira J, Vicente ACP. Gut Microbiome Biomarkers and Functional Diversity Within an Amazonian Semi-Nomadic Hunter-Gatherer Group. Front Microbiol 2019; 10:1743. [PMID: 31417531 PMCID: PMC6682603 DOI: 10.3389/fmicb.2019.01743] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022] Open
Abstract
Human groups that still maintain traditional modes of subsistence (hunter-gatherers and rural agriculturalists) represent human groups non-impacted by urban-industrialized lifestyles, and therefore their gut microbiome provides the basis for understanding the human microbiome evolution and its association with human health and disease. The Yanomami is the largest semi-nomadic hunter-gatherer group of the Americas, exploring different niches of the Amazon rainforest in Brazil and Venezuela. Here, based on shotgun metagenomic data, we characterized the gut microbiome of the Yanomami from Brazil and compared taxonomically and functionally with the Yanomami from Venezuela, with other traditional groups from the Amazon and an urban-industrialized group. Taxonomic biomarkers were identified to each South American traditional group studied, including each Yanomami group. Broader levels of functional categories poorly discriminated the traditional and urban-industrialized groups, but the stratification of these categories revealed clear segregation of these groups. The Yanomami/Brazil gut microbiome presented unique functional features, such as a higher abundance of gene families involved in regulation/cell signaling, motility/chemotaxis, and virulence, contrasting with the gut microbiomes from the Yanomami/Venezuela and the other groups. Our study revealed biomarkers, and taxonomic and functional features that distinguished the gut microbiome of Yanomami/Brazil and Yanomami/Venezuela individuals, despite their shared lifestyle, culture, and genetic background. These differences may be a reflection of the environmental and seasonal diversity of the niches they explore. Overall, their microbiome profiles are shared with South American and African traditional groups, probably due to their lifestyle. The unique features identified within the Yanomami highlight the bias imposed by underrepresented sampling, and factors such as variations over space and time (seasonality) that impact, mainly, the hunter-gatherers.
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Affiliation(s)
- Liliane Costa Conteville
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Joseli Oliveira-Ferreira
- Laboratory of Immunoparasitology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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17
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Delatorre E, de Abreu FVS, Ribeiro IP, Gómez MM, dos Santos AAC, Ferreira-de-Brito A, Neves MSAS, Bonelly I, de Miranda RM, Furtado ND, Raphael LMS, da Silva LDFF, de Castro MG, Ramos DG, Romano APM, Kallás EG, Vicente ACP, Bello G, Lourenço-de-Oliveira R, Bonaldo MC. Distinct YFV Lineages Co-circulated in the Central-Western and Southeastern Brazilian Regions From 2015 to 2018. Front Microbiol 2019; 10:1079. [PMID: 31178835 PMCID: PMC6543907 DOI: 10.3389/fmicb.2019.01079] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/29/2019] [Indexed: 12/25/2022] Open
Abstract
The current outbreak of yellow fever virus (YFV) that is afflicting Brazil since the end of 2016 probably originated from a re-introduction of YFV from endemic areas into the non-endemic Southeastern Brazil. However, the lack of genomic sequences from endemic regions hinders the tracking of YFV's dissemination routes. We assessed the origin and spread of the ongoing YFV Brazilian outbreak analyzing a new set of YFV strains infecting humans, non-human primates (NHPs) and mosquitoes sampled across five Brazilian states from endemic and non-endemic regions between 2015 and 2018. We found two YFV sub-clade 1E lineages circulating in NHP from Goiás state (GO), resulting from independent viral introductions into the Araguaia tributary river basin: while one strain from 2017 clustered intermingled with Venezuelan YFV strains from 2000, the other YFV strains sampled in 2015 and 2017 clustered with sequences of the current YFV outbreak in the Brazilian Southeastern region (named YFV2015-2018 lineage), displaying the same molecular signature associated to the current YFV outbreak. After its introduction in GO at around mid-2014, the YFV2015-2018 lineage followed two paths of dissemination outside GO, originating two major YFV sub-lineages: (1) the YFVMG/ES/RJ sub-lineage spread sequentially from the eastern area of Minas Gerais state to Espírito Santo and then to Rio de Janeiro states, following the Southeast Atlantic basin; (2) the YFVMG/SP sub-lineage spread from the southwestern area of Minas Gerais to the metropolitan region of São Paulo state, following the Paraná basin. These results indicate the ongoing YFV outbreak in Southeastern Brazil originated from a dissemination event from GO almost 2 years before its recognition at the end of 2016. From GO this lineage was introduced in Minas Gerais state at least two times, originating two sub-lineages that followed different routes toward densely populated areas. The spread of YFV outside endemic regions for at least 4 years stresses the imperative importance of the continuous monitoring of YFV to aid decision-making for effective control policies aiming the increase of vaccination coverage to avoid the YFV transmission in densely populated urban centers.
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Affiliation(s)
- Edson Delatorre
- Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Filipe Vieira Santos de Abreu
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
- Instituto Federal do Norte de Minas Gerais, Salinas, Brazil
| | - Ieda Pereira Ribeiro
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Mariela Martínez Gómez
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
- División Biología Molecular y Genética, Departamento de Biología Molecular, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | | | - Anielly Ferreira-de-Brito
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Iule Bonelly
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Rafaella Moraes de Miranda
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Nathália Dias Furtado
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Lidiane Menezes Souza Raphael
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Márcia Gonçalves de Castro
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Daniel Garkauskas Ramos
- Coordenação Geral de Vigilância das Doenças Transmissíveis, Departamento de Vigilância das Doenças Transmissíveis, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Brazil
| | - Alessandro Pecego Martins Romano
- Coordenação Geral de Vigilância das Doenças Transmissíveis, Departamento de Vigilância das Doenças Transmissíveis, Secretaria de Vigilância em Saúde, Ministério da Saúde, Brasília, Brazil
| | - Esper Georges Kallás
- Departamento de Moléstias Infecciosas, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Gonzalo Bello
- Laboratório de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ricardo Lourenço-de-Oliveira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Myrna Cristina Bonaldo
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Abstract
The presence of tRNA array, a region with high tRNA gene number and density, has been demonstrated in Mycobacterium genus. However, a recent phylogenomic study revealed the existence of five distinct monophyletic groups (genera) within this genus. Considering this new scenario, and based on in-silico analyses, we have identified and characterised the abundance and diversity of tRNA array units within Mycobacterium, Mycolicibacterium gen. nov., Mycolicibacillus gen. nov., and Mycobacteroides gen. nov. The occurrence and prevalence of tRNA arrays among the genera belonging to Actinobacteria indicate their possible role in the organismal fitness.
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Affiliation(s)
- Sergio Mascarenhas Morgado
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
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Abstract
BACKGROUND Shared traits between prokaryotes and eukaryotes are helpful in the understanding of the tree of life evolution. In bacteria and eukaryotes, it has been shown a particular organisation of tRNA genes as clusters, but this trait has not been explored in the archaea domain. OBJECTIVE Explore the occurrence of tRNA gene clusters in archaea. METHODS In-silico analyses of complete and draft archaeal genomes based on tRNA gene isotype and synteny, tRNA gene cluster content and mobilome elements. FINDINGS We demonstrated the prevalence of tRNA gene clusters in archaea. tRNA gene clusters, composed of archaeal-type tRNAs, were identified in two Archaea class, Halobacteria and Methanobacteria from Euryarchaeota supergroup. Genomic analyses also revealed evidence of the association between tRNA gene clusters to mobile genetic elements and intra-domain horizontal gene transfer. MAIN CONCLUSIONS tRNA gene cluster occurs in the three domains of life, suggesting a role of this type of tRNA gene organisation in the biology of the living organisms.
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Affiliation(s)
- Sergio Mascarenhas Morgado
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
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20
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Castro LS, Rezende GRD, Fernandes FRP, Bandeira LM, Puga MAM, Tanaka TSO, Weis-Torres SMDS, Vicente ACP, Otsuki K, Motta-Castro ARC. Human T cell lymphotropic virus type 1 infection among men who have sex with men in Central Brazil. Braz J Infect Dis 2018; 22:472-476. [PMID: 30528600 PMCID: PMC9425634 DOI: 10.1016/j.bjid.2018.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 11/08/2018] [Accepted: 11/12/2018] [Indexed: 11/29/2022] Open
Abstract
Human T cell lymphotropic virus type 1 (HTLV-1) was the first retrovirus discovered in humans and is endemic in several parts of the world. Because of risk behaviors, mainly sexual, men who have sex with men (MSM) are at high risk of acquiring HTLV-1 infection. A cross-sectional study was performed to estimate the prevalence of HTLV-1 infection, to characterize genetically HTLV-1 sequences and to identify risk behaviors associated with this infection among MSM in Central Brazil. A total of 430 MSM were enrolled in this study and three were shown to be HTLV-1 infected, prevalence of 0.7% (95% confidence interval: 0.4–0.9). Phylogenetic analysis showed that all HTLV-1 positive samples belonged to Cosmopolitan subtype Transcontinental subgroup A. Although the prevalence rate of HTLV-1 infection found in this study was similar to that observed among Brazilian blood donors, additional HTLV-1 preventive interventions need to be further implemented because this population is engaged in high-risk sexual behavior.
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Affiliation(s)
- Lisie Souza Castro
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil.
| | - Grazielli Rocha de Rezende
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Fernanda Rodas Pires Fernandes
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Larissa Melo Bandeira
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Marco Antonio Moreira Puga
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Tayana Serpa Ortiz Tanaka
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Sabrina Moreira Dos Santos Weis-Torres
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz, FIOCRUZ, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brazil
| | - Koko Otsuki
- Fundação Oswaldo Cruz, FIOCRUZ, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brazil
| | - Ana Rita Coimbra Motta-Castro
- Universidade Federal de Mato Grosso do Sul, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Laboratório de Imunologia Clínica, Mato Grosso do Sul, MS, Brazil; Fundação Oswaldo Cruz, FIOCRUZ, Mato Grosso do Sul, MS, Brazil
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21
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Ribeiro IP, Kozlowski AG, Dias de Matos MA, da Costa E Silva ÁM, Dos Santos Carneiro MA, Vicente ACP, Martins RMB. HTLV-1 and -2 in a first-time blood donor population in Northeastern Brazil: Prevalence, molecular characterization, and evidence of intrafamilial transmission. J Med Virol 2018; 90:1651-1657. [PMID: 29797609 DOI: 10.1002/jmv.25231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 05/16/2018] [Indexed: 01/05/2023]
Abstract
Independent epidemiology for respective human T-cell lymphotropic virus (HTLV) types 1 and 2 is little known in blood donors in Brazil, where screening for HTLV-1/2 is mandatory at blood banks, but no testing to confirm/differentiate these viruses. Therefore, this study aims to assess the prevalence of HTLV-1 and -2 in a first-time blood donor population in Northeastern Brazil and to carry out molecular characterization of respective isolates. A cross-sectional study was conducted at the State Blood Bank in Piauí. Samples were screened for anti-HTLV-1/2 by enzyme immunoassay, and reactive samples were confirmed using a line immunoassay and polymerase chain reaction (PCR). Of 37 306 blood donors, 47 were anti-HTLV-1/2 reactive by enzyme immunoassay. After confirmed by line immunoassay, 22 were positive for HTLV-1 (0.59 per 1000; 95% CI: 0.38-0.87), 14 were positive for HTLV-2 (0.37 per 1000; 95% CI: 0.21-0.61), 1 was indeterminate, and the remaining donors were negative. The HTLV-1 infection was also confirmed by PCR in all anti-HTLV-1-positive samples, and sequencing classified these isolates as belonging to the Transcontinental (A) subgroup of the Cosmopolitan (1a) subtype. Of 14 anti-HTLV-2-positive samples, 11 were also PCR positive, which belonged to subtype a (HTLV-2a/c). In addition, 38 family members of 5 HTLV-1- and 3 HTLV-2-infected donors were analyzed. Familial transmission of HTLV-1 and -2 was evidenced in 3 families. In conclusion, in Northeastern Brazil, where HTLV-1 and -2 are endemic, counseling blood donor candidates and their families might play a key role in limiting the spread of these viruses.
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Affiliation(s)
- Ivonizete Pires Ribeiro
- Institute of Tropical Pathology and Public Health, Federal University of Goiás (UFG), Goiás, Brazil.,State University of Piauí, Piauí, Brazil
| | - Aline Garcia Kozlowski
- Institute of Tropical Pathology and Public Health, Federal University of Goiás (UFG), Goiás, Brazil
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22
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Gómez MM, Abreu FVSD, Santos AACD, Mello ISD, Santos MP, Ribeiro IP, Ferreira-de-Brito A, Miranda RMD, Castro MGD, Ribeiro MS, Laterrière Junior RDC, Aguiar SF, Meira GLS, Antunes D, Torres PHM, Mir D, Vicente ACP, Guimarães ACR, Caffarena ER, Bello G, Lourenço-de-Oliveira R, Bonaldo MC. Genomic and structural features of the yellow fever virus from the 2016-2017 Brazilian outbreak. J Gen Virol 2018; 99:536-548. [PMID: 29469689 DOI: 10.1099/jgv.0.001033] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Southeastern Brazil has been suffering a rapid expansion of a severe sylvatic yellow fever virus (YFV) outbreak since late 2016, which has reached one of the most populated zones in Brazil and South America, heretofore a yellow fever-free zone for more than 70 years. In the current study, we describe the complete genome of 12 YFV samples from mosquitoes, humans and non-human primates from the Brazilian 2017 epidemic. All of the YFV sequences belong to the modern lineage (sub-lineage 1E) of South American genotype I, having been circulating for several months prior to the December 2016 detection. Our data confirm that viral strains associated with the most severe YF epidemic in South America in the last 70 years display unique amino acid substitutions that are mainly located in highly conserved positions in non-structural proteins. Our data also corroborate that YFV has spread southward into Rio de Janeiro state following two main sylvatic dispersion routes that converged at the border of the great metropolitan area comprising nearly 12 million unvaccinated inhabitants. Our original results can help public health authorities to guide the surveillance, prophylaxis and control measures required to face such a severe epidemiological problem. Finally, it will also inspire other workers to further investigate the epidemiological and biological significance of the amino acid polymorphisms detected in the Brazilian 2017 YFV strains.
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Affiliation(s)
- Mariela Martínez Gómez
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Filipe Vieira Santos de Abreu
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Instituto Federal do Norte de Minas Gerais, Salinas, MG, Brazil
| | | | - Iasmim Silva de Mello
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Marta Pereira Santos
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ieda Pereira Ribeiro
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Anielly Ferreira-de-Brito
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Rafaella Moraes de Miranda
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Marcia Gonçalves de Castro
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Mario Sergio Ribeiro
- Superintendência de Vigilância Epidemiológica e Ambiental, Secretaria Estadual de Saúde, Rio de Janeiro, Brazil
| | | | | | | | - Deborah Antunes
- Programa de Computação Científica (PROCC), Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Daiana Mir
- Laboratório de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ana Carolina Ramos Guimarães
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ernesto Raul Caffarena
- Programa de Computação Científica (PROCC), Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Gonzalo Bello
- Laboratório de AIDS e Imunologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ricardo Lourenço-de-Oliveira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Myrna Cristina Bonaldo
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Tavares da Silva LB, Crainey JL, Ribeiro da Silva TR, Suwa UF, Vicente ACP, Fernandes de Medeiros J, Pessoa FAC, Luz SLB. Molecular Verification of New World Mansonella perstans Parasitemias. Emerg Infect Dis 2018; 23:545-547. [PMID: 28221120 PMCID: PMC5382733 DOI: 10.3201/eid2303.161159] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We obtained ribosomal and mitochondrial DNA sequences from residents of Amazonas state, Brazil, with Mansonella parasitemias. Phylogenetic analysis of these sequences confirm that M. ozzardi and M. perstans parasites occur in sympatry and reveal the close relationship between M. perstans in Africa and Brazil, providing insights into the parasite's New World origins.
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24
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Morgado SM, Marín MA, Freitas FS, Fonseca EL, Vicente ACP. Complete plasmid sequence carrying type IV-like and type VII secretion systems from an atypical mycobacteria strain. Mem Inst Oswaldo Cruz 2017; 112:514-516. [PMID: 28591314 PMCID: PMC5452490 DOI: 10.1590/0074-02760160546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/28/2017] [Indexed: 11/22/2022] Open
Abstract
The genus Mycobacterium is highly diverse and ubiquitous in nature, comprehending fast- and slow-growing species with distinct impact in public health. The plasmid-mediated horizontal gene transfer represents one of the major events in bacteria evolution. Here, we report the complete sequence of a 160,489 bp circular plasmid (pCBMA213_2) from an atypical and fast-growing environmental mycobacteria. This is a unique plasmid, in comparison with the characterised mycobacteria plasmids, harboring a type IV-like and ESX-P2 type VII secretion systems. pCBMA213_2 can be further explored for evolutionary and conjugation studies as well as a tool to manipulate DNA within this bacteria genus.
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Affiliation(s)
- Sergio Mascarenhas Morgado
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Michel Abanto Marín
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Fernanda S Freitas
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Erica Lourenço Fonseca
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
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25
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Frutos MC, Gastaldello R, Balangero M, Remondegui C, Blanco S, Otsuki K, Paulo Vicente AC, Elías D, Mangeaud A, Nates S, Gallego S. Silent dissemination of HTLV-1 in an endemic area of Argentina. Epidemiological and molecular evidence of intrafamilial transmission. PLoS One 2017; 12:e0174920. [PMID: 28384180 PMCID: PMC5383099 DOI: 10.1371/journal.pone.0174920] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/17/2017] [Indexed: 11/25/2022] Open
Abstract
Background Molecular and epidemiological studies of transmission routes and risk factors for infection by HTLV-1 are extremely important in order to implement control measures, especially because of the high prevalence of HTLV-1 in several regions of the world. San Salvador de Jujuy, Northwest Argentina, is a highly endemic area for HTLV-1 and foci of tropical spastic paraparesis/HTLV-1-associated myelopathy. Objective To gain further insight into the role of intrafamilial transmission of HTLV-1 in a highly endemic region in Argentina. Method Cross-sectional study in Northwest Argentina. Epidemiological data and blood samples were collected from 28 HTLV-1 infected subjects (index cases) and 92 close relatives/cohabitants. HTLV-1 infection was diagnosed by detection of antibodies and proviral DNA. The LTR region was sequenced and analyzed for genetic distances (VESPA software), in addition to determination and identification of polymorphisms to define HTLV-1 family signatures. Results Fifty seven of the 120 subjects enrolled had antibodies against HTLV-1 and were typified as HTLV-1 by PCR. The prevalence rate of HTLV-1 infection in family members of infected index cases was 31.52% (29/92). The infection was significantly associated with gender, age and prolonged lactation. Identity of LTR sequences and presence of polymorphisms revealed high prevalence of mother-to-child and interspousal transmission of HTLV-1 among these families. Conclusion There is an ongoing and silent transmission of HTLV-1 through vertical and sexual routes within family clusters in Northwest Argentina. This evidence highlights that HTLV-1 infection should be considered as a matter of public health in Argentina, in order to introduce preventive measures as prenatal screening and breastfeeding control.
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Affiliation(s)
- María C. Frutos
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
- * E-mail:
| | - Rene Gastaldello
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Marcos Balangero
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Carlos Remondegui
- Departamento de Enfermedades Infecciones, Hospital San Roque, San Salvador de Jujuy, Argentina
| | - Sebastián Blanco
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Koko Otsuki
- Laboratorio de Genética Molecular de Microorganismos, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - David Elías
- Departamento de Matemática. Facultad de Ciencias Exactas, Físicas y Naturales- Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Arnaldo Mangeaud
- Departamento de Matemática. Facultad de Ciencias Exactas, Físicas y Naturales- Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Silvia Nates
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Sandra Gallego
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas–Universidad Nacional de Córdoba, Córdoba, Argentina
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David MR, Santos LMBD, Vicente ACP, Maciel-de-Freitas R. Effects of environment, dietary regime and ageing on the dengue vector microbiota: evidence of a core microbiota throughout Aedes aegypti lifespan. Mem Inst Oswaldo Cruz 2016; 111:577-87. [PMID: 27580348 PMCID: PMC5027870 DOI: 10.1590/0074-02760160238] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 06/27/2016] [Indexed: 11/24/2022] Open
Abstract
Mosquito midgut microbiota is a key component of vector competence, as gut bacteria can disturb pathogen development. In this study, we addressed the microbiota composition of Aedes aegypti during its lifespan, under field conditions. We also investigated the possible effects of environment, dietary regime and ageing on the gut community composition. We employed culture independent and dependent approaches to characterise vector microbiota. There was evidence of a lifelong stable core microbiota after mosquitoes were released into an urban settlement, where they presumably fed on a range of vertebrate hosts and carbohydrate sources. This core was formed mainly of bacteria belonging to the genera Pseudomonas, Acinetobacter, Aeromonas and Stenotrophomonas and to the families Oxalobacteraceae, Enterobacteriaceae and Comamonadaceae. We showed that both dietary regime and age were associated with the abundance of some bacterial groups in the Ae. aegypti microbiota. The majority of the bacterial groups we identified have been detected in the midgut of Ae. aegypti from laboratory and wild populations, indicating a possible core microbiota associated with this mosquito species. Our findings suggest that Ae. aegypti harbours a stable bacterial community during its adult life, similar to mosquito populations from distinct geographic areas, which may be further explored for arbovirus biocontrol strategies.
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Affiliation(s)
- Mariana Rocha David
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
| | - Lilha Maria Barbosa Dos Santos
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Paulo Vicente
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Genética Molecular de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Rafael Maciel-de-Freitas
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
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Conteville LC, Zanella L, Marín MA, Filippis AMBD, Nogueira RMR, Vicente ACP, Mendonça MCLD. Phylogenetic analyses of chikungunya virus among travelers in Rio de Janeiro, Brazil, 2014-2015. Mem Inst Oswaldo Cruz 2016; 111:347-8. [PMID: 27120007 PMCID: PMC4878304 DOI: 10.1590/0074-02760160004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 03/11/2016] [Indexed: 11/29/2022] Open
Abstract
Chikungunya virus (CHIKV) is a mosquito-borne pathogen that emerged in Brazil by late
2014. In the country, two CHIKV foci characterized by the East/Central/South Africa
and Asian genotypes, were established in North and Northeast regions. We
characterized, by phylogenetic analyses of full and partial genomes, CHIKV from Rio
de Janeiro state (2014-2015). These CHIKV strains belong to the Asian genotype, which
is the determinant of the current Northern Brazilian focus, even though the genome
sequence presents particular single nucleotide variations. This study provides the
first genetic characterisation of CHIKV in Rio de Janeiro and highlights the
potential impact of human mobility in the spread of an arthropod-borne virus.
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Affiliation(s)
- Liliane Costa Conteville
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Louise Zanella
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Michel Abanto Marín
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | | | | | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
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Conteville LC, Zanella L, Marín MA, Filippis AMBD, Nogueira RMR, Vicente ACP, Mendonça MCLD. Parvovirus B19 1A complete genome from a fatal case in Brazil. Mem Inst Oswaldo Cruz 2016; 110:820-1. [PMID: 26517666 PMCID: PMC4667590 DOI: 10.1590/0074-02760150261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 08/26/2015] [Indexed: 11/21/2022] Open
Abstract
Parvovirus B19 (B19V) infects individuals worldwide and is associated with an ample
range of pathologies and clinical manifestations. B19V is classified into three
distinct genotypes, all identified in Brazil. Here, we report a complete sequence of
a B19V genotype 1A that was obtained by high-throughput metagenomic sequencing. This
genome provides information that will contribute to the studies on B19V epidemiology
and evolution.
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Affiliation(s)
- Liliane Costa Conteville
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Louise Zanella
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Michel Abanto Marín
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | | | | | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
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Fonseca ÉL, Vicente ACP. Polycistronic transcription of fused cassettes and identification of translation initiation signals in an unusual gene cassette array from Pseudomonas aeruginosa. F1000Res 2015; 2:99. [PMID: 26674490 PMCID: PMC4670013 DOI: 10.12688/f1000research.2-99.v1] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/25/2015] [Indexed: 11/15/2023] Open
Abstract
The gene cassettes found in class 1 integrons are generally promoterless units composed by an open reading frame (ORF), a short 5' untranslated region (UTR) and a 3' recombination site ( attC). Fused gene cassettes are generated by partial or total loss of the attC from the first cassette in an array, creating, in some cases, a fusion with the ORF from the next cassette. These structures are rare and little is known about their mechanisms of mobilization and expression. The aim of this study was to evaluate the dynamic of mobilization and transcription of the gcu14-bla GES-1 /aacA4 gene cassette array, which harbours a fused gene cassette represented by bla GES-1 /aacA4. The cassette array was analyzed by Northern blot and real-time reverse transcription-polymerase chain reaction (RT-PCR) in order to assess the transcription mechanism of bla GES-1 /aacA4 fused cassette. Also, inverse polymerase chain reactions (PCR) were performed to detect the free circular forms of gcu14, bla GES-1 and aacA4. The Northern blot and real time RT-PCR revealed a polycistronic transcription, in which the fused cassette bla GES-1 /aacA4 is transcribed as a unique gene, while gcu14 (with a canonical attC recombination site) has a monocistronic transcription. The gcu14 cassette, closer to the weak configuration of cassette promoter (PcW), had a higher transcription level than bla GES-1/ aacA4, indicating that the cassette position affects the transcript amounts. The presence of ORF-11 at attI1, immediately preceding gcu14, and of a Shine-Dalgarno sequence upstream bla GES-1/ aacA4 composes a scenario for the occurrence of array translation. Inverse PCR generated amplicons corresponding to gcu14, gcu14-aacA4 and gcu14-bla GES-1/ aacA4 free circular forms, but not to bla GES-1 and aacA4 alone, indicating that the GES-1 truncated attC is not substrate of integrase activity and that these genes are mobilized together as a unique cassette. This study was original in showing the transcription of fused cassettes and in correlating cassette position with transcription.
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Affiliation(s)
- Érica L. Fonseca
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, 4365, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, 4365, Brazil
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Lima VDS, Xavier SCDC, Maldonado IFR, Roque ALR, Vicente ACP, Jansen AM. Expanding the knowledge of the geographic distribution of Trypanosoma cruzi TcII and TcV/TcVI genotypes in the Brazilian Amazon. PLoS One 2014; 9:e116137. [PMID: 25551227 PMCID: PMC4281250 DOI: 10.1371/journal.pone.0116137] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 12/04/2014] [Indexed: 11/19/2022] Open
Abstract
Trypanosoma cruzi infection is a complex sylvatic enzooty involving a wide range of animal species. Six discrete typing units (DTUs) of T. cruzi, named TcI to TcVI, are currently recognized. One unanswered question concerning the epidemiology of T. cruzi is the distribution pattern of TcII and hybrid DTUs in nature, including their virtual absence in the Brazilian Amazon, the current endemic area of Chagas disease in Brazil. Herein, we characterized biological samples that were collected in previous epizootiological studies carried out in the Amazon Basin in Brazil. We performed T. cruzi genotyping using four polymorphic genes to identify T. cruzi DTUs: mini-exon, 1f8, histone 3 and gp72. This analysis was conducted in the following biological samples: (i) two T. cruzi isolates obtained by culturing of stools from the triatomine species Rhodnius picttipes and (ii) five serum samples from dogs in which trypomastigotes were observed during fresh blood examination. We report for the first time the presence of TcII and hybrid DTUs (TcV/TcVI) in the Amazon region in mixed infections with TcI. Furthermore, sequencing of the constitutive gene, gp72, demonstrated diversity in TcII even within the same forest fragment. These data show that TcII is distributed in the five main Brazilian biomes and is likely more prevalent than currently described. It is very probable that there is no biological or ecological barrier to the transmission and establishment of any DTU in any biome in Brazil.
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Affiliation(s)
- Valdirene dos Santos Lima
- Laboratório de Biologia de Tripanosomatídeos, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Irene Fabíola Roman Maldonado
- Laboratório de Biologia de Tripanosomatídeos, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luiz Rodrigues Roque
- Laboratório de Biologia de Tripanosomatídeos, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microorganismos, Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Maria Jansen
- Laboratório de Biologia de Tripanosomatídeos, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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Morais LLCDS, Garza DR, Loureiro ECB, Vale ER, Santos DSADS, Corrêa VC, Sousa NR, Gurjão TCM, Santos ECDO, Vieira VV, da Fonseca EL, Vicente ACP. Population and genetic study of Vibrio cholerae from the amazon environment confirms that the WASA-1 prophage is the main marker of the epidemic strain that circulated in the region. PLoS One 2013; 8:e81372. [PMID: 24303045 PMCID: PMC3841125 DOI: 10.1371/journal.pone.0081372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 10/12/2013] [Indexed: 11/19/2022] Open
Abstract
Vibrio cholerae is a natural inhabitant of many aquatic environments in the world. Biotypes harboring similar virulence-related gene clusters are the causative agents of epidemic cholera, but the majority of strains are harmless to humans. Since 1971, environmental surveillance for potentially pathogenic V. cholerae has resulted in the isolation of many strains from the Brazilian Amazon aquatic ecosystem. Most of these strains are from the non-O1/non-O139 serogroups (NAGs), but toxigenic O1 strains were isolated during the Latin America cholera epidemic in the region (1991-1996). A collection of environmental V. cholerae strains from the Brazilian Amazon belonging to pre-epidemic (1977-1990), epidemic (1991-1996), and post-epidemic (1996-2007) periods in the region, was analyzed. The presence of genes related to virulence within the species and the genetic relationship among the strains were studied. These variables and the information available concerning the strains were used to build a Bayesian multivariate dependency model to distinguish the importance of each variable in determining the others. Some genes related to the epidemic strains were found in environmental NAGs during and after the epidemic. Significant diversity among the virulence-related gene content was observed among O1 strains isolated from the environment during the epidemic period, but not from clinical isolates, which were analyzed as controls. Despite this diversity, these strains exhibited similar PFGE profiles. PFGE profiles were significant while separating potentially epidemic clones from indigenous strains. No significant correlation with isolation source, place or period was observed. The presence of the WASA-1 prophage significantly correlated with serogroups, PFGE profiles, and the presence of virulence-related genes. This study provides a broad characterization of the environmental V. cholerae population from the Amazon, and also highlights the importance of identifying precisely defined genetic markers such as the WASA-1 prophage for the surveillance of cholera.
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Affiliation(s)
| | - Daniel Rios Garza
- Environmental Section of the Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | | | | | | | | | - Nayara Rufino Sousa
- Environmental Section of the Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | | | | | - Verônica Viana Vieira
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Foundation, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Erica Lourenço da Fonseca
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Foundation, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Foundation, Rio de Janeiro, Rio de Janeiro, Brazil
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Rosadas C, Cabral-Castro MJ, Vicente ACP, Peralta JM, Puccioni-Sohler M. Validation of a quantitative real-time PCR assay for HTLV-1 proviral load in peripheral blood mononuclear cells. J Virol Methods 2013; 193:536-41. [DOI: 10.1016/j.jviromet.2013.07.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 07/09/2013] [Accepted: 07/15/2013] [Indexed: 10/26/2022]
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Kozlowski AG, Carneiro MADS, Matos MADD, Teles SA, Araújo JAF, Otsuki K, Vicente ACP, Martins RMB. Prevalence and genetic characterisation of HTLV-1 and 2 dual infections in patients with pulmonary tuberculosis in Central-West Brazil. Mem Inst Oswaldo Cruz 2013; 109:118-21. [PMID: 24141955 PMCID: PMC4005525 DOI: 10.1590/0074-0276130230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 08/12/2013] [Indexed: 11/22/2022] Open
Abstract
Human T-cell lymphotropic virus (HTLV) may impact the clinical course of tuberculosis
(TB). Both infections are highly endemic in Brazil. The aim of this study was to
assess the prevalence of HTLV-1/2 in TB patients in Central-West Brazil and to
perform a genetic characterisation of the respective isolates. Of the 402 patients,
six (1.49%) were positive for anti-HTLV and five (1.24%; 95% confidence interval:
0.46-3.05) were infected with HTLV-1/2. Genetic characterisation demonstrated that
the four HTLV-1 isolates belonged to the Transcontinental subgroup A of the
Cosmopolitan subtype a and that the HTLV-2 isolate belonged to subtype a (HTLV-2a/c).
The prevalence of HTLV infection observed in this study is higher than that observed
in local blood donors and the HTLV-1 and 2 subtypes identified are consistent with
those circulating in Brazil.
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Affiliation(s)
| | | | | | | | | | - Koko Otsuki
- Instituto Oswaldo Cruz, Rio de JaneiroRJ, Brasil
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Trindade-Silva AE, Rua CPJ, Andrade BGN, Vicente ACP, Silva GGZ, Berlinck RGS, Thompson FL. Polyketide synthase gene diversity within the microbiome of the sponge Arenosclera brasiliensis, endemic to the Southern Atlantic Ocean. Appl Environ Microbiol 2013; 79:1598-605. [PMID: 23275501 PMCID: PMC3591950 DOI: 10.1128/aem.03354-12] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [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: 10/30/2012] [Accepted: 12/19/2012] [Indexed: 11/20/2022] Open
Abstract
Microbes associated with marine sponges are considered important producers of bioactive, structurally unique polyketides. The synthesis of such secondary metabolites involves type I polyketide synthases (PKSs), which are enzymes that reach a maximum complexity degree in bacteria. The Haplosclerida sponge Arenosclera brasiliensis hosts a complex microbiota and is the source of arenosclerins, alkaloids with cytotoxic and antibacterial activity. In the present investigation, we performed high-throughput sequencing of the ketosynthase (KS) amplicon to investigate the diversity of PKS genes present in the metagenome of A. brasiliensis. Almost 4,000 ketosynthase reads were recovered, with about 90% annotated automatically as bacterial. A total of 235 bacterial KS contigs was rigorously assembled from this sequence pool and submitted to phylogenetic analysis. A great diversity of six type I PKS groups has been consistently detected in our phylogenetic reconstructions, including a novel and A. brasiliensis-exclusive group. Our study is the first to reveal the diversity of type I PKS genes in A. brasiliensis as well as the potential of its microbiome to serve as a source of new polyketides.
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Affiliation(s)
- Amaro E. Trindade-Silva
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
- Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cintia P. J. Rua
- Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Genivaldo G. Z. Silva
- Department of Computer Science, San Diego State University, San Diego, California, USA
| | - Roberto G. S. Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos, São Paulo, Brazil
| | - Fabiano L. Thompson
- Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Fonseca ÉL, Vicente ACP. Polycistronic transcription of fused cassettes and identification of translation initiation signals in an unusual gene cassette array from Pseudomonas aeruginosa. F1000Res 2013; 2:99. [PMID: 26674490 PMCID: PMC4670013 DOI: 10.12688/f1000research.2-99.v3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/25/2015] [Indexed: 11/20/2022] Open
Abstract
The gene cassettes found in class 1 integrons are generally promoterless units composed by an open reading frame (ORF), a short 5’ untranslated region (UTR) and a 3’ recombination site (
attC). Fused gene cassettes are generated by partial or total loss of the
attC from the first cassette in an array, creating, in some cases, a fusion with the ORF from the next cassette. These structures are rare and little is known about their mechanisms of mobilization and expression. The aim of this study was to evaluate the dynamic of mobilization and transcription of the
gcu14-blaGES-1/aacA4 gene cassette array, which harbours a fused gene cassette represented by
blaGES-1/aacA4. The cassette array was analyzed by Northern blot and real-time reverse transcription-polymerase chain reaction (RT-PCR) in order to assess the transcription mechanism of
blaGES-1/aacA4 fused cassette. Also, inverse polymerase chain reactions (PCR) were performed to detect the free circular forms of
gcu14, blaGES-1 and aacA4. The Northern blot and real time RT-PCR revealed a polycistronic transcription, in which the fused cassette
blaGES-1/aacA4 is transcribed as a unique gene, while
gcu14 (with a canonical
attC recombination site) has a monocistronic transcription. The
gcu14 cassette, closer to the weak configuration of cassette promoter (PcW), had a higher transcription level than
blaGES-1/
aacA4, indicating that the cassette position affects the transcript amounts. The presence of ORF-11 at
attI1, immediately preceding
gcu14, and of a Shine-Dalgarno sequence upstream
blaGES-1/
aacA4 composes a scenario for the occurrence of array translation. Inverse PCR generated amplicons corresponding to
gcu14, gcu14-aacA4 and gcu14-blaGES-1/
aacA4 free circular forms, but not to
blaGES-1 and
aacA4 alone, indicating that the GES-1 truncated
attC is not substrate of integrase activity and that these genes are mobilized together as a unique cassette. This study was original in showing the transcription of fused cassettes and in correlating cassette position with transcription.
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Affiliation(s)
- Érica L Fonseca
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, 4365, Brazil
| | - Ana Carolina Paulo Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, 4365, Brazil
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Sá LLC, Vale ERV, Garza DR, Vicente ACP. Vibrio cholerae O1 from superficial water of the Tucunduba Stream, Brazilian Amazon. Braz J Microbiol 2012; 43:635-8. [PMID: 24031874 PMCID: PMC3768806 DOI: 10.1590/s1517-83822012000200027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Accepted: 01/16/2012] [Indexed: 11/22/2022] Open
Abstract
Isolation and genetic characterization of an environmental Vibrio cholerae O1 from the Amazon is reported. This strain lacks two major virulence factors - CTX and TCP - but carries other genes related to virulence. Genetic similarity with epidemic strains is evaluated and the importance of V. cholerae surveillance in the Amazon is emphasized.
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Affiliation(s)
- L L C Sá
- Laboratório de Microbiologia Ambiental e Biologia Molecular, Seção de Meio Ambiente, Instituto Evandro Chagas, Secretaria de Vigilância em Saúde, Ministério da Saúde , Belém, PA , Brasil
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Carvalho ODS, Grault CE, Machado MP, Pieri O, Vicente ACP, Cupolillo E. Foreword. Mem Inst Oswaldo Cruz 2011; 106:783. [PMID: 22124548 DOI: 10.1590/s0074-02762011000700001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Vicente ACP. On the emergence of atypical Vibrio cholerae O1 El Tor & cholera epidemic. Indian J Med Res 2011; 133:366-7. [PMID: 21537088 PMCID: PMC3103168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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da Fonseca ÉL, dos Santos Freitas F, Vicente ACP. Pc promoter from class 2 integrons and the cassette transcription pattern it evokes. J Antimicrob Chemother 2011; 66:797-801. [PMID: 21393219 DOI: 10.1093/jac/dkr011] [Citation(s) in RCA: 13] [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: 11/14/2022] Open
Abstract
OBJECTIVES Integrons are considered expression systems due to the presence of Pc promoters that drive gene cassette transcription. The role and configurations of Pc are well known in class 1 integrons; however, this region has not yet been identified in class 2 integrons. This study aimed to characterize the Pc promoter from class 2 integrons and to determine the effect of gene cassette position on transcription driven by this promoter. METHODS The class 2 cassette arrays from Klebsiella pneumoniae and Vibrio cholerae strains were determined by sequencing. Transcription analyses were performed by real-time RT-PCR and relative quantification was carried out by comparing the transcripts of each normalized gene inserted in the integron to each other. The resistance profile was determined by the disc diffusion method. The class 2 Pc promoter was characterized by 5' rapid amplification of cDNA ends and promoter prediction programs. RESULTS Sequence analysis revealed the presence of the dfrA1-sat2-aadA1-ybeA and sat2-aadA1-ybeA arrangements in K. pneumoniae and V. cholerae strains, respectively. Real-time RT-PCR showed that the transcription of the first cassettes was higher than that of distal ones in wild-type and recombinant strains. All strains were resistant, indicating cassette expression. The Pc promoter of class 2 integrons (-35 TTTAAT |16 bp| -10 TAAAAT) was determined based on in silico analyses and on the transcription start site sequence of the class 2 integron cassette array. CONCLUSIONS The Pc from class 2 integrons was characterized for the first time and the cassette position effect on transcription was demonstrated.
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Affiliation(s)
- Érica Lourenço da Fonseca
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.
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Câmara CC, Oriá RB, Felismino TC, da Silva AP, da Silva MAM, Alcântara JVA, Costa SBC, Vicente ACP, Teixeira-Santos TJ, de Castro-Costa CM. Motor behavioral abnormalities and histopathological findings of Wistar rats inoculated with HTLV-1-infected MT2 cells. Braz J Med Biol Res 2010; 43:657-62. [PMID: 20521016 DOI: 10.1590/s0100-879x2010007500050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Accepted: 05/18/2010] [Indexed: 12/14/2022] Open
Abstract
The objective of the present study was to describe motor behavioral changes in association with histopathological and hematological findings in Wistar rats inoculated intravenously with human T-cell lymphotropic virus type 1 (HTLV-1)-infected MT2 cells. Twenty-five 4-month-old male rats were inoculated with HTLV-1-infected MT2 cells and 13 control rats were inoculated with normal human lymphocytes. The behavior of the rats was observed before and 5, 10, 15, and 20 months after inoculation during a 30-min/rat testing time for 5 consecutive days. During each of 4 periods, a subset of rats was randomly chosen to be sacrificed in order to harvest the spinal cord for histopathological analysis and to obtain blood for serological and molecular studies. Behavioral analyses of the HTLV-1-inoculated rats showed a significant decrease of climbing, walking and freezing, and an increase of scratching, sniffing, biting, licking, and resting/sleeping. Two of the 25 HTLV-1-inoculated rats (8%) developed spastic paraparesis as a major behavioral change. The histopathological changes were few and mild, but in some cases there was diffuse lymphocyte infiltration. The minor and major behavioral changes occurred after 10-20 months of evolution. The long-term observation of Wistar rats inoculated with HTLV-1-infected MT2 cells showed major (spastic paraparesis) and minor motor abnormalities in association with the degree of HTLV-1-induced myelopathy.
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Affiliation(s)
- C C Câmara
- Laboratório de Neurologia Experimental e Neurofisiologia, Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brasil.
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Nascimento LBD, Carneiro MADS, Teles SA, Lopes CLR, Reis NRDS, Silva AMDCE, Motta-Castro ARC, Otsuki K, Vicente ACP, Martins RMB. [Prevalence of infection due to HTLV-1 in remnant quilombos in Central Brazil]. Rev Soc Bras Med Trop 2010; 42:657-60. [PMID: 20209350 DOI: 10.1590/s0037-86822009000600009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Accepted: 10/27/2009] [Indexed: 11/21/2022] Open
Abstract
This study aimed to determine the prevalence of HTLV-1 infection among remnant black quilombo communities in Central Brazil. A total of 1,837 individuals were evaluated, among whom nine were HTLV-1/2 seropositive according to ELISA. All of them were positive for HTLV-1 by means of Western blot and/or PCR, thus resulting in a prevalence of 0.5% (95% CI: 0.2-1.0). The HTLV-1 infected individuals ranged in age from 11 to 82 years. The majority of them were females. Regarding risk characteristics, histories of breastfeeding, blood transfusion, multiple sexual partners and sexually transmitted diseases were reported by these individuals. The findings from this study indicate the importance of identifying HTLV-1 infected individuals, as a strategy for infection control and prevention in these remnant quilombos.
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Sá LLCD, Fonseca ÉLD, Pellegrini M, Freitas F, Loureiro ECB, Vicente ACP. Occurrence and composition of class 1 and class 2 integrons in clinical and environmental O1 and non-O1/non-O139 Vibrio cholerae strains from the Brazilian Amazon. Mem Inst Oswaldo Cruz 2010; 105:229-32. [DOI: 10.1590/s0074-02762010000200021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 02/09/2010] [Indexed: 11/22/2022] Open
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Leles D, Araújo A, Vicente ACP, Iñiguez AM. ITS1 intra-individual variability of Ascaris isolates from Brazil. Parasitol Int 2010; 59:93-6. [DOI: 10.1016/j.parint.2009.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Revised: 09/30/2009] [Accepted: 10/03/2009] [Indexed: 11/24/2022]
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Iñiguez AM, Santos CP, Vicente ACP. Genetic characterization of Anisakis typica and Anisakis physeteris from marine mammals and fish from the Atlantic Ocean off Brazil. Vet Parasitol 2009; 165:350-6. [PMID: 19651475 DOI: 10.1016/j.vetpar.2009.07.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 05/27/2009] [Accepted: 07/07/2009] [Indexed: 11/16/2022]
Abstract
Until now, Anisakis typica has been the sole anisakid identified by means of genetic markers from the Atlantic Ocean off Brazil. In this study we developed, and applied to larvae and adults, an A. typica-specific molecular identification protocol based on the complete intergenic transcribed spacer (ITS) region. Anisakids from the dolphin Sotalia guianensis and from the frigate tuna, Auxis thazard, caught off the coast of Brazil, were processed using two DNA extraction methods. Molecular diagnosis identified A. typica in 13 of 15 samples. Complete ITS analysis showed that the remaining two isolates were in fact A. physeteris. Maximum parsimony analysis of complete ITS region (915 bp) confirmed these results. Our study verified the dominance of A. typica infecting hosts from the Brazilian coast and showed, for the first time, the presence of A. physeteris in the intermediate/paratenic host A. thazard in this region.
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Affiliation(s)
- Alena Mayo Iñiguez
- Laboratório de Genética Molecular de Microorganismos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900 Rio de Janeiro, RJ, Brazil.
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Gastaldello R, Iñiguez AM, Otsuki K, Lamas G, Balangero M, Barbas MG, Mangano A, Sen L, Maturano E, Remondegui C, Vicente ACP, Gallego S. HTLV type 1 genetic types among native descendants in Argentina. AIDS Res Hum Retroviruses 2008; 24:1139-46. [PMID: 18657044 DOI: 10.1089/aid.2007.0299] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The province of San Salvador de Jujuy, located in the northwest of Argentina, is a highly endemic area for HTLV-1 infection and a foci of tropical spastic paraparesis/HTLV-1-associated myelopathy (HAM/TSP). Therefore, to better understand this, we carried out a genetic characterization of a large set of HTLV-1 strains (n = 65) of descendants of Amerindians from this region. The LTR and env regions were analyzed. The genetic analysis showed that all of these new HTLV-1 isolates from Argentina belong to the Transcontinental subgroup A of the HTLV-1a Cosmopolitan subtype, with the exception of three isolates that cluster within the Japanese subgroup B. Interestingly, the majority of the sequences from Jujuy province belonged to a distinct cluster within the Latin America Transcontinental subgroup, referred to here as the Jujuy subcluster, and were characterized by specific signatures in the LTR. Given that the samples analyzed in this study belong to the Amerindian population and the high prevalence of HTLV-1 in Jujuy in contrast to the low prevalence of this virus in the country, it could be that HTLV-1aA was spread in Argentina from the Amerindians to the cosmopolitan population. Moreover, this is the first report of an HTLV-1aB or Japanese subgroup in descendants of non-Japanese people in South America.
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Affiliation(s)
- René Gastaldello
- Laboratory of Human Lymphotropic Viruses, Institute of Virology, School of Medicine, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Alena Mayo Iñiguez
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Koko Otsuki
- Laboratory of Molecular Genetics of Microorganisms, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Gabriela Lamas
- Department of Infectious Diseases, San Roque Hospital, San Salvador de Jujuy, Argentina
| | - Marcos Balangero
- Laboratory of Human Lymphotropic Viruses, Institute of Virology, School of Medicine, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María Gabriela Barbas
- Laboratory of Human Lymphotropic Viruses, Institute of Virology, School of Medicine, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Andrea Mangano
- Laboratory of Cellular Biology and Retroviruses, J. P. Garrahan Hospital, Buenos Aires, Argentina
| | - Luisa Sen
- Laboratory of Cellular Biology and Retroviruses, J. P. Garrahan Hospital, Buenos Aires, Argentina
| | - Eduardo Maturano
- Laboratory of Human Lymphotropic Viruses, Institute of Virology, School of Medicine, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Carlos Remondegui
- Department of Infectious Diseases, San Roque Hospital, San Salvador de Jujuy, Argentina
| | | | - Sandra Gallego
- Laboratory of Human Lymphotropic Viruses, Institute of Virology, School of Medicine, Universidad Nacional de Córdoba, Córdoba, Argentina
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Motta MRA, Pinheiro DCSN, Carvalho VL, Viana DDA, Vicente ACP, Iñiguez AM. Gastric lesions associated with the presence of Anisakis spp. Dujardin, 1845 (Nematoda: Anisakidae) in Cetaceans stranded on the coast of Ceara, Brazil. Biota Neotrop 2008. [DOI: 10.1590/s1676-06032008000200010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gastric compartments of ten cetaceans stranded on the coast of Ceará State, Northeast Brazil were analyzed in this study. Gastric Anisakis spp. was diagnosed in all individuals involved in this study. Parasites and tissue samples were collected during necropsy. The presence of Anisakis parasites showed similar distribution across the three gastric compartments and the majority was free within the gastric lumen. Macroscopically, the lesions were predominantly characterized by the presence of ulcers (60%, 6/10) within the gastric mucosa, occasionally associated with edema and hemorrhage (30%, 3/10). Eight cetaceans (8/10 - 80%) presented gastric microscopic alterations and in 75% (6/8) of these animals, chronic lymphoplasmocytic gastritis was observed with varying degrees of distribution and severity. Additionally, eosinophilic and granulomatous inflammation with giant cells, hemosiderosis, fibrosis and areas of necrosis were associated with location of parasites within the gastric mucosa. In this study, it was shown that the majority of cetaceans with the presence of Anisakis parasites presented macro and microscopic gastric alterations. These nematodes are probably associated with the development of these alterations; however, more pathological approaches are still required.
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Marigo J, Paulo Vicente AC, Schifino Valente AL, Measures L, Portes Santos C. Redescription of Synthesium pontoporiae N. Comb. with Notes on S. tursionis and S. seymouri N. Comb. (Digenea: Brachycladiidae Odhner, 1905). J Parasitol 2008; 94:505-14. [DOI: 10.1645/ge-1306.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Leles D, Araújo A, Ferreira LF, Vicente ACP, Iñiguez AM. Molecular paleoparasitological diagnosis of Ascaris sp. from coprolites: new scenery of ascariasis in pre-Colombian South America times. Mem Inst Oswaldo Cruz 2008; 103:106-8. [PMID: 18327505 DOI: 10.1590/s0074-02762008005000004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2007] [Accepted: 12/27/2007] [Indexed: 11/22/2022] Open
Abstract
Paleoparasitological studies using microscopy showed that Ascarisand Trichuris trichiura are the human intestinal parasites most found in archaeological sites. However, in pre-Columbian South American archaeological sites, Ascaris is rare. In this work we standardized a molecular methodology for Ascaris diagnosis directly from ancient DNA retrieved from coprolites. Using cythochrome b gene (142 bp) target, ancient DNA sequences were retrieved from South American samples, negative by microscopy. Moreover, the methodology applied was sensitive enough to detect ancient DNA extracted from 30 Ascaris eggs from an European coprolite. These results revealed a new scenery for the paleodistribution of Ascaris in South America.
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Affiliation(s)
- Daniela Leles
- Escola Nacional de Saúde Pública, FiocruzRio de Janeiro, Brasil
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de Filippis I, de Andrade CF, de Almeida AECC, Clementino MM, Fernandes CACM, de Carvalho ML, Vicente ACP. Neisseria meningitidis PorA variable regions: rapid detection of P1.7 and P1.19 variants by PCR. Lett Appl Microbiol 2007; 45:426-31. [PMID: 17897387 DOI: 10.1111/j.1472-765x.2007.02205.x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM Rapid characterization of variable region (VR)1 variants of the porA gene among invasive strains is crucial for outbreak management and epidemiology studies. Recent sequence analysis studies in Brazil showed that the VR1 P1.7 and P1.19 variants are highly prevalent, accounting for 68%, of the total number of VR1 variants characterized. The aim of this work is to develop a rapid polymerase chain reaction (PCR)-based method for genosubtyping Neisseria meningitidis by detection of porA variable regions P1.7 and P1.19. METHODS AND RESULTS PCR primers for the detection of porA VR1 P1.7 and P1.19 were designed and tested using 198 clinical N. meningitidis isolates that had been previously evaluated by porA sequencing. All 50 strains with VR1 P1.7 and all 65 strains with VR1 P1.19 were positively identified by the respective VR-specific PCR and no false-positive reactions occurred. CONCLUSIONS VR-specific PCR amplification accurately identified VR P1.7 and P1.19 strains. SIGNIFICANCE AND IMPACT OF THE STUDY To overcome the disadvantages of serosubtyping and sequencing for typing the porA VR1 segment of N. meningitidis, we developed a PCR-based method to rapidly and accurately detect VR1 P1.7 and P1.19 variants. This approach is highly specific and sensitive; moreover it may allow for genotype determination of culture-negative samples.
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Affiliation(s)
- I de Filippis
- Microbiology Dept., National Institute for Quality Control of Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
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da Fonseca EL, Vieira VV, Cipriano R, Vicente ACP. Emergence of blaGES-5 in clinical colistin-only-sensitive (COS) Pseudomonas aeruginosa strain in Brazil. J Antimicrob Chemother 2007; 59:576-7. [PMID: 17284538 DOI: 10.1093/jac/dkl517] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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