Importance of Toxin A, Toxin B, and CDT in Virulence of an Epidemic Clostridium difficile Strain

Clostridium difficile infection is the main cause of healthcare-acquired diarrhea in the developed world. In addition to the main virulence factors toxin A and B, epidemic, PCR Ribotype 027 strains, such as R20291, produce a third toxin, CDT. To develop effective medical countermeasures, it is impor...

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Detalles Bibliográficos
Autores principales: Kuehne, Sarah A., Collery, Mark M., Kelly, Michelle L., Cartman, Stephen T., Cockayne, Alan, Minton, Nigel P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2014
Materias:
Major Articles and Brief Reports
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3864386/
https://www.ncbi.nlm.nih.gov/pubmed/23935202
http://dx.doi.org/10.1093/infdis/jit426
Descripción
Sumario:Clostridium difficile infection is the main cause of healthcare-acquired diarrhea in the developed world. In addition to the main virulence factors toxin A and B, epidemic, PCR Ribotype 027 strains, such as R20291, produce a third toxin, CDT. To develop effective medical countermeasures, it is important to understand the importance of each toxin. Accordingly, we created all possible combinations of isogenic toxin mutants of R20291 and assessed their virulence. We demonstrated that either toxin A or toxin B alone can cause fulminant disease in the hamster infection model and present tantalizing data that C. difficile toxin may also contribute to virulence.

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