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The rare < em > Salmonella enterica < /em > serovar Isangi: genomic characterization of the antimicrobial resistance, virulence potential and epidemiology of Brazilian strains in comparison to global isolates
Conclusion. The presence of S. Isangi strains from Brazil and different countries showing a close genomic correlation, antimicrobial resistance profiles to drugs used in human therapy and a large number of virulence determinants reinforced the need for stronger initiatives to monitor rare non-typhoidal Salmonella serovars such as S. Isangi in order to prevent its dissemination among human and non-human sources.PMID:37462464 | DOI:10.1099/jmm.0.001736
Source: Journal of Medical Microbiology - July 18, 2023 Category: Microbiology Authors: Felipe Pinheiro Vilela D ália Dos Prazeres Rodrigues Marc William Allard Juliana Pfrimer Falc ão Source Type: research

Boron-based magnesium diboride nanosheets preparation and tested for antimicrobial properties for PES membrane
This study focuses on the effects of a new generation borophene derivative obtained from MgB2 particles on the antimicrobial activity of polyethersulfone membranes. MgB2 nanosheets were created by mechanically separating magnesium diboride (MgB2) particles into layers. The samples were microstructurally characterized using SEM, HR-TEM, and XRD methods. MgB2 nanosheets were screened for various biological activities such as antioxidant, DNA nuclease, antimicrobial, microbial cell viability inhibition, and antibiofilm activities. The antioxidant activity of nanosheets was 75.24 ± 4.15% at 200 mg/L. Plasmid DNA was entirely ...
Source: Chemosphere - June 28, 2023 Category: Chemistry Authors: Ridvan Kucukosman Zelal Isik Kasim Ocakoglu Nadir Dizge Sadin Özdemir M Serkan Yal çın Prabhakar Sharma Deepanraj Balakrishnan Source Type: research

Genomic analyses of drug-resistant Salmonella enterica serovar Heidelberg strains isolated from meat and related sources between 2013 and 2017 in the south region of Brazil
In conclusion, the presence of multidrug-resistant S. Heidelberg strains in Brazil showing a global genomic relationship may alert for the necessity of stronger surveillance measures by food safety and public health authorities to limit its spread to humans and animals through foods.PMID:36920496 | DOI:10.1007/s00294-023-01264-4
Source: Current Genetics - March 15, 2023 Category: Genetics & Stem Cells Authors: Felipe Pinheiro Vilela D ália Dos Prazeres Rodrigues Marc William Allard Juliana Pfrimer Falc ão Source Type: research

A set of antibiotic-resistance mechanisms and virulence factors in GES-16-producing Klebsiella quasipneumoniae subsp. Similipneumoniae from hospital wastewater revealed by whole-genome sequencing
Environ Pollut. 2022 Nov 11:120645. doi: 10.1016/j.envpol.2022.120645. Online ahead of print.ABSTRACTKlebsiella quasipneumoniae subsp. Similipneumoniae has emerged as a human pathogen and sporadic isolates from non-clinical sources were reported. Here, we described the phenotypic- and genomic-characteristics of a multidrug-resistant (MDR) and potentially hypervirulent (MDR-hv) Klebsiella quasipneumoniae subsp. Similipneumoniae (KqA1) isolated from hospital wastewater. The antibiotic susceptibility profile of KqA1 was investigated using disk-diffusion method, broth microdilution method, and agar dilution method, and the gen...
Source: Environmental Pollution - November 14, 2022 Category: Environmental Health Authors: Guilherme Sgobbi Zagui Ot ávio Guilherme Gonçalves de Almeida Nat ália Columbaro Moreira Nath ália Abichabki Gabriel Pinheiro Machado Elaine Cristina Pereira De Martinis Ana L úcia Costa Darini Leonardo Neves Andrade Susana In és Segura-Muñoz Source Type: research

Surveillance and Genomics of Toxigenic Vibrio cholerae O1 From Fish, Phytoplankton and Water in Lake Victoria, Tanzania
This study reports the occurrence of multidrug resistant V. cholerae O1 in Lake Victoria that are genetically closely related to recent pandemic strains in Tanzania, Kenya and Uganda. The strains identified are also closely related to older pandemic strains recovered in the Democratic Republic of Congo, Burundi and Tanzania up until 1993, suggesting a long-term persistence and wide spatial distribution of pandemic strains within the region with the lake serving as a reservoir. These environmental isolates likely emerged from previous cholera outbreaks and survived in the lake environment for decades through various relatio...
Source: Frontiers in Microbiology - April 29, 2019 Category: Microbiology Source Type: research

A Rapid Antimicrobial Susceptibility Test for Determining Yersinia pestis Susceptibility to Doxycycline by RT-PCR Quantification of RNA Markers
This study was supported by the Israel Institute for Biological Research, Ness Ziona, Israel. Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. Acknowledgments We thank Dr. Vered Caspi (Ben-Gurion University) for assisting with the bioinformatics and statistical analyses of the Agilent DNA microarray results. Supplementary Material The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmicb.2019.00754/full#s...
Source: Frontiers in Microbiology - April 15, 2019 Category: Microbiology Source Type: research