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VopX, a novel T3SS effector, modulates host actin dynamics.
mBio
January 2025
Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York, USA.
Unlabelled: Pathogenic strains cause cholera using different mechanisms. O1 and O139 serogroup strains use the toxin-co-regulated pilus (TCP) and cholera toxin (CT) for intestinal colonization and to promote secretory diarrhea, while non-O1/non-O139 serogroup strains are typically non-toxigenic and use alternate virulence factors to cause a clinically similar disease. An O39 serogroup, TCP/CT-negative strain, named AM-19226, uses a type III secretion system (T3SS) to translocate more than 10 effector proteins into the host cell cytosol.
View Article and Find Full Text PDFNon-toxigenic cases of in Spain from 2012 to 2022.
Microb Genom
December 2024
Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Spain.
Non-toxigenic non-O1/non-O139 (NVC) isolates are associated with diarrhoeal disease globally. NVC-related infections are on the rise, representing one of the most striking examples of emerging human diseases linked to climate change. This study aims to give a better picture of the evolution of NCV incidence in Spain from 2012 to 2022.
View Article and Find Full Text PDFNon-O1/non-O139 Vibrio cholerae bacteraemia and cholangitis: an unusual case in an oncological patient in Lecco Hospital, Italy.
New Microbiol
November 2024
Infectious Diseases Unit, "Alessandro Manzoni" Hospital, ASST-Lecco, Lecco, Italy.
Only toxigenic serogroups O1 and O139 Vibrio cholerae have been associated with widespread cholera epidemics. Other serogroups (non-O1/non-O139 Vibrio cholerae or NOVC) most often cause sporadic gastrointestinal manifestations. Rarely, NOVC can result in severe extraintestinal manifestations in immunocompromised hosts.
View Article and Find Full Text PDFPotentially Pathogenic spp. in Algal Wrack Accumulations on Baltic Sea Sandy Beaches.
Microorganisms
October 2024
Marine Research Institute, Klaipėda University, University Avenue 17, 92295 Klaipėda, Lithuania.
The bacteria known to cause infections to humans and wildlife have been largely overlooked in coastal environments affected by beach wrack accumulations from seaweed or seagrasses. This study presents findings on the presence and distribution of potentially pathogenic species on coastal beaches that are used for recreation and are affected by red-algae-dominated wrack. Using species-specific primers and 16S rRNA gene amplicon sequencing, we identified , .
View Article and Find Full Text PDFDiversity and Complexity of CTXΦ and Pre-CTXΦ Families in from Seventh Pandemic.
Microorganisms
September 2024
National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changbai Road 155, Changping District, Beijing 102206, China.
CTXΦ is a lysogenic filamentous phage that carries the genes encoding cholera toxin (), the main virulence factor of . The toxigenic conversion of environmental strains through CTXΦ lysogenic infection is crucial for the emergence of new pathogenic clones. A special allelic form of CTXΦ, called pre-CTXΦ, is a precursor of CTXΦ and without .
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