نتایج جستجو برای: letal toxin b

تعداد نتایج: 942877  

Journal: :American journal of physiology. Gastrointestinal and liver physiology 2003
M Neunlist J Barouk K Michel I Just T Oreshkova M Schemann J P Galmiche

This study investigated whether toxin B of Clostridium difficile can activate human submucosal neurons and the involved pathways. Isolated segments of human colon were placed in organ culture for 3 h in the presence of toxin B or IL-1beta. Whole mounts of internal submucosal plexus were stained with antibodies against c-Fos, neuron-specific enolase (NSE), vasoactive intestinal polypeptide (VIP)...

Journal: :Folia veterinaria 2023

Abstract Trichothecenes are among the most important fusariotoxins. According to their chemical structure, they divided into 4 groups (A – D). In terms of agriculture, trichothecenes A and B greatest importance. this study, incidence (deoxynivalenol T-2 toxin) in mixed feed for broilers turkeys were determined. Deoxynivalenol was detected all analysed samples mixture (100 %) at an average conce...

2013
Charles Darkoh Eric L. Brown Heidi B. Kaplan Herbert L. DuPont

Virulent Clostridium difficile strains produce toxin A and/or toxin B that are the etiological agents of diarrhea and pseudomembranous colitis. Treatment of C. difficile infections (CDI) has been hampered by resistance to multiple antibiotics, sporulation, emergence of strains with increased virulence, recurrence of the infection, and the lack of drugs that preserve or restore the colonic bacte...

Journal: :Journal of clinical microbiology 1993
P H Gumerlock Y J Tang J B Weiss J Silva

Clostridium difficile is the infectious agent responsible for antibiotic-associated colitis. We report the use of the polymerase chain reaction technique to identify toxigenic strains of C. difficile in human stool specimens. A set of primers based on the nucleotide sequence of the toxin B gene, which amplified a 399-bp fragment from isolates producing toxin B, was designed. We examined 28 know...

Journal: :Applied and environmental microbiology 2006
Shubhra Majumder Gudula Schmidt Anuradha Lohia Klaus Aktories

Clostridial glucosylating cytotoxins inactivate mammalian Rho GTPases by mono-O glucosylation of a conserved threonine residue located in the switch 1 region of the target protein. Here we report that EhRho1, a RhoA-like GTPase from the protozoan parasite Entamoeba histolytica, is glucosylated by clostridial cytotoxins. Recombinant glutathione S-transferase-EhRho1 and EhRho1 from cell lysate of...

Journal: :Infection and immunity 2000
S Z Hausman D L Burns

Recently, concern has been voiced about the potential effect that antigenic divergence of circulating strains of Bordetella pertussis might have on the efficacy of pertussis vaccines. In order to model antigenic drift of pertussis toxin, a critical component of many pertussis vaccines, and to examine the effects of such drift on antibody neutralization, we engineered a strain of B. pertussis to...

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