Navegando por Autor "FIGUEIREDO, Henrique Cesar Pereira"

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Acesso aberto (Open Access)
Draft genome sequences of two species of “difficult-to-identify” human-pathogenic corynebacteria: implications for better identification tests.
(Ivyspring International Publisher, 2015) PACHECO, Luis Gustavo Carvalho; GUARALDI, Ana Luiza de Mattos; SANTOS, Carolina Silva; VERAS, Adonney Allan de Oliveira; GUIMARÃES, Luís Carlos; ABREU, Vinicius Augusto Carvalho de; PEREIRA, Felipe Luiz; SOARES, Siomar de Castro; DORELLA, Fernanda Alves; CARVALHO, Alex Fiorini de; LEAL, Carlos Augusto Gomes; FIGUEIREDO, Henrique Cesar Pereira; RAMOS, Juliana Nunes; VIEIRA, Verônica Viana; FARFOUR, Eric; GUISO, Nicole; HIRATA JÚNIOR, Raphael; AZEVEDO, Vasco Ariston de Carvalho; SILVA, Artur Luiz da Costa da; RAMOS, Rommel Thiago Juca
Non-diphtheriae Corynebacterium species have been increasingly recognized as the causative agents of infections in humans. Differential identification of these bacteria in the clinical microbiology laboratory by the most commonly used biochemical tests is challenging, and normally requires additional molecular methods. Herein, we present the annotated draft genome sequences of two isolates of “difficult-to-identify” human-pathogenic corynebacterial species: C. xerosis and C. minutissimum. The genome sequences of ca. 2.7 Mbp, with a mean number of 2,580 protein en coding genes, were also compared with the publicly available genome sequences of strains of C. amycolatum and C. striatum. These results will aid the exploration of novel biochemical reactions to improve existing identification tests as well as the development of more accurate molecular identification methods through detection of species-specific target genes for isolate’s identification or drug susceptibility profiling.
Acesso aberto (Open Access)
Genome sequence of Lactococcus lactis subsp. lactis NCDO 2118, a GABA - producing strain
(American Society for Microbiology, 2014-10) SARAIVA, Tessália Diniz Luerce; SOARES, Siomar de Castro; RAMOS, Rommel Thiago Juca; SÁ, Pablo Henrique Caracciolo Gomes de; CARNEIRO, Adriana Ribeiro; MIRANDA, Fábio Malcher; FREIRA, Matheus; RENAN, Wendal; OLIVEIRA JÚNIOR, Alberto Fernandes de; SANTOS, Anderson Rodrigues dos; GOMIDE, Anne Cybelle Pinto; SOUZA, Bianca Mendes; CASTRO, Camila Prósperi de; DINIZ, Carlos Augusto Almeida; ROCHA, Clarissa Santos; MARIANO, Diego César Batista; AGUIAR, Edgar Lacerda de; FOLADOR, Edson Luiz; BARBOSA, Eudes Guilherme Vieira; ABURJAILE, Flavia Figueira; GONÇALVES, Lucas Amorim; GUIMARÃES, Luís Carlos; AZEVEDO, Marcela; AGRESTI, Pamela Mancha; SOUZA, Renata de Faria Silva; TIWARI, Sandeep; ALMEIDA, Sintia Silva de; HASSAN, Syed Shah; PEREIRA, Vanessa Bastos; ABREU, Vinicius Augusto Carvalho de; PEREIRA, Ulisses de Pádua; DORELLA, Fernanda Alves; CARVALHO, Alex Fiorini de; PEREIRA, Felipe Luiz; LEAL, Carlos Augusto Gomes; FIGUEIREDO, Henrique Cesar Pereira; SILVA, Artur Luiz da Costa da; MIYOSHI, Anderson; AZEVEDO, Vasco Ariston de Carvalho
Lactococcus lactis subsp. lactis NCDO 2118 is a nondairy lactic acid bacterium, a xylose fermenter, and a gamma-aminobutyric acid (GABA) producer isolated from frozen peas. Here, we report the complete genome sequence of L. lactis NCDO 2118, a strain with probiotic potential activity.
Acesso aberto (Open Access)
Quadruplex PCR assay for identification of Corynebacterium pseudotuberculosis differentiating biovar Ovis and Equi
(BioMed Central Ltd, 2017) ALMEIDA, Sintia Silva de; DORNELES, Elaine Maria Seles; DINIZ, Carlos Augusto Almeida; ABREU, Vinicius Augusto Carvalho de; SOUSA, Cassiana Severiano de; ALVES, Jorianne Thyeska Castro; CARNEIRO, Adriana Ribeiro; VILAS BOAS, Priscilla Carolinne Bagano; SPIER, Sharon; BARH, Debmalya; LAGE, Andrey Pereira; FIGUEIREDO, Henrique Cesar Pereira; AZEVEDO, Vasco Ariston de Carvalho
Background: Corynebacterium pseudotuberculosis is classified into two biovars, nitrate-negative biovar Ovis which is the etiologic agent of caseous lymphadenitis in small ruminants and nitrate-positive biovar Equi, which causes abscesses and ulcerative lymphangitis in equines. The aim of this study was to develop a quadruplex PCR assay that would allow simultaneous detection and biovar-typing of C. pseudotuberculosis. Methods: In the present study, genomes of C. pseudotuberculosis strains were used to identify the genes involved in the nitrate reduction pathway to improve a species identification three-primer multiplex PCR assay. The nitrate reductase gene (narG) was included in the PCR assay along with the 16S, rpoB and pld genes to enhance the diagnosis of the multiplex PCR at biovar level. Results: A novel quadruplex PCR assay for C. pseudotuberculosis species and biovar identification was developed. The results of the quadruplex PCR of 348 strains, 346 previously well-characterized clinical isolates of C. pseudotuberculosis from different hosts (goats, sheep, horse, cattle, buffalo, llamas and humans), the vaccine strain 1002 and the type strain ATCC 19410T , were compared to the results of nitrate reductase identification by biochemical test. The McNemar’s Chi-squared test used to compare the two methods used for C. pseudotuberculosis biovar identification showed no significant difference (P = 0.75) [95% CI for odds ratio (0.16–6.14)] between the quadruplex PCR and the nitrate biochemical test. Concordant results were observed for 97.13% (338 / 348) of the tested strains and the kappa value was 0.94 [95% CI (0.90–0.98)]. Conclusions: The ability of the quadruplex assay to discriminate between C. pseudotuberculosis biovar Ovis and Equi strains enhances its usefulness in the clinical microbiology laboratory.