Publications by authors named "Joao Flavio Carneiro Veras"
sp. nov., a Gram-Positive, Spore-Forming Rod Isolated from a Pharmaceutical Facility Production Environment and Added to the MALDI Biotyper Database.
Microorganisms
December 2024
A Gram-positive, aerobic, rod-shaped and spore-forming bacterium strain designation, B190/17, was isolated from an air monitoring sample of a Brazilian immunobiological production facility in 2017. The strain was not identifiable by biochemical methodology VITEK 2 or by MALDI-TOF MS with VITEK MS RUO and MALDI Biotyper. The 16S rRNA gene sequencing results showed 98.
View Article and Find Full Text PDFMolecular characterization and phylogenetic analysis of the first Corynebacterium rouxii strains isolated in Brazil: a recent member of Corynebacterium diphtheriae complex.
BMC Genom Data
November 2023
Background: Corynebacterium diphtheriae complex was formed by the species C. diphtheriae, Corynebacterium ulcerans and Corynebacterium pseudotuberculosis in the recent past. In addition to C.
View Article and Find Full Text PDFClustered regularly interspaced short palindromic repeats (CRISPR) are a prokaryotic adaptive immune system that, through Cas proteins, promote the degradation of foreign nucleic acids such as phages and plasmids. We analyzed 10 genomes of Corynebacterium striatum clinical isolates from a public hospital in Rio de Janeiro, Brazil, the most emergent multidrug-resistant Corynebacterium species. All isolates were submitted to antimicrobial susceptibility testing.
View Article and Find Full Text PDF, a bacterium that is part of the normal skin microbiota, is also an opportunistic pathogen. In recent years, reports of infections and in-hospital and nosocomial outbreaks caused by antimicrobial multidrug-resistant strains have been increasing worldwide. However, there are no studies about the genomic determinants related to antimicrobial resistance in .
View Article and Find Full Text PDFArticle Synopsis
- Streptococcus agalactiae (GBS) is a significant pathogen, particularly harmful to newborns, causing severe infections like meningitis.
- Researchers sequenced the first genome of the ST-17 strain of S. agalactiae from Brazil, revealing a size of 2.03 Mbp, with high genomic flexibility indicated by 706 core genes and an open pan-genome of 5,020 genes.
- The study identified 10 pathogenicity islands containing critical virulence factors and highlighted unique genes and SNPs that may contribute to the strain's high virulence and evolutionary adaptability.
Background: Corynebacterium striatum is an emerging multidrug-resistant (MDR) pathogen associated with immunocompromised and chronically ill patients, as well as nosocomial outbreaks. In this study, we characterized 23 MDR C. striatum isolated of bloodstream and catheter-related infections from a hospital of Rio de Janeiro.
View Article and Find Full Text PDFGenome sequence of a multidrug-resistant Corynebacterium striatum isolated from bloodstream infection from a nosocomial outbreak in Rio de Janeiro, Brazil.
Mem Inst Oswaldo Cruz
July 2018
Article Synopsis
- - The study focuses on a strain of multidrug-resistant (MDR) Corynebacterium striatum linked to hospital infections, highlighting its rising prevalence as a pathogen.
- - Researchers report the genome of a C. striatum isolated from a patient in Rio de Janeiro, revealing resistance to all antibiotics tested except tetracycline, vancomycin, and linezolid.
- - Notable findings include numerous antibiotic resistance genes, a significant portion of the pTP10 plasmid, and the presence of a SpaDEF cluster along with seven CRISPR-Cas arrays in the genome.