Lethal toxin is a critical determinant of rapid mortality in rodent models of Clostridium sordellii endometritis
| Autor: | Judy S. Opp, Tennille Senn, David M. Aronoff, Geetha Srinivas, Vincent B. Young, Yibai Hao, Teri Thiele, Steven K. Huang |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Virulence Factors
Bacterial Toxins Virulence Clostridium sordellii medicine.disease_cause Microbiology Article Virulence factor Mice Clostridium medicine Animals Humans Rats Wistar Peritoneal Infection biology Toxin Gene Expression Profiling Toxic shock syndrome biology.organism_classification medicine.disease Virology Rats Mice Inbred C57BL Infectious Diseases Immunoglobulin G Monoclonal Clostridium Infections Female Antitoxins Endometritis |
| Zdroj: | Anaerobe. 16:155-160 |
| ISSN: | 1075-9964 |
| DOI: | 10.1016/j.anaerobe.2009.06.002 |
| Popis: | The toxigenic anaerobe Clostridium sordellii is an uncommon but highly lethal cause of human infection and toxic shock syndrome, yet few studies have addressed its pathogenetic mechanisms. To better characterize the microbial determinants of rapid death from infection both in vitro and in vivo studies were performed to compare a clinical strain of C. sordellii strain (DA-108), isolated from a patient who survived a disseminated infection unaccompanied by toxic shock syndrome, to a virulent reference strain (ATCC9714). Rodent models of endometrial and peritoneal infection with C. sordellii ATCC9714 were rapidly lethal, while infections with DA-108 were not. Extensive genetic and functional comparisons of virulence factor and toxin expression between these two bacterial strains yielded many similarities, with the noted exception that strain DA-108 lacked the tcsL gene, which encodes the large clostridial glucosyltransferase enzyme lethal toxin (TcsL). The targeted removal by immunoprecipitation of TcsL protected animals from death following injection of crude culture supernatants from strain ATCC9714. Injections of a monoclonal anti-TcsL IgG protected animals from death during C. sordellii ATCC9714 infection, suggesting that such an approach might improve the treatment of patients with C. sordellii-induced toxic shock syndrome. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect