Magic™ Anti-C. difficile Toxin B Monoclonal antibody (DCABY-4701)

Mouse Anti-C. difficile Toxin B Monoclonal antibody for ELISA (Cap)

Specifications


Host Species
Mouse
Antibody Isotype
IgG1
Clone
N0622425
Species Reactivity
C. difficile
Immunogen
Clostridum difficile toxin B antibody was raised in mouse using toxin B of Clostridium difficile as the immunogen.
Conjugate
Unconjugated

Applications


Application Notes
ELISA(Cap)
We recommend the following for sandwich ELISA (Capture - Detection):
DCABY-4700 - DCABY-4701
DCABY-4701 - DCABY-4700
*Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own experiment using appropriate negative and positive controls.

Target


Alternative Names
Clostridum difficile toxin B; C. difficile toxin B

Citations


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Custom Antibody Labeling


We offer labeled antibodies using our catalogue antibody products and a broad range of intensely fluorescent dyes and labels including HRP, biotin, ALP, Alexa Fluor® dyes, DyLight® Fluor dyes, R-phycoerythrin (R-PE), at scales from less than 100 μg up to 1 g of IgG antibody. Learn More

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References


Clostridioides difficile in Outpatients: Application of a Diagnostic Algorithm Recommended by the European Society of Clinical Microbiology and Infectious Diseases

EUROPEAN JOURNAL OF MICROBIOLOGY AND IMMUNOLOGY

Authors: Ignatius, Ralf; Neuber, Robert; Kietzmann, Heike; Berg, Christiane; Wenzel, Thilo; Fuhrmann, Joerg; Mueller, Michael

This study aimed at evaluating in outpatients an algorithm for the laboratory diagnosis of Clostridioides (Clostridium) difficile infection (CDI), i.e., enzyme immunoassays (EIAs) detecting bacterial glutamate dehydrogenase (GDH) and toxin A/B, followed by polymerase chain reaction (PCR) analyses of samples with discordant EIA results. In total, 9802 examinations of stool samples by GDH and toxin EIAs performed in 7263 outpatients and 488 inpatients were analyzed retrospectively. Samples with discordant EIA results had been tested by a commercially available PCR assay detecting genes of the C. difficile-specific those phosphate isomerase (tpi) and toxin B (tcdB). Concordant EIA results (686 C. difficile-positive, 8121 negative) were observed for 8807 (89.8%; 95% CI, 89.290.4%) samples. Of 958 samples with discordant EIA results, 895 were analyzed using PCR and 580 of 854 GDH-positive/borderline, toxin-negative samples (67.9%; 95% CI, 64.7-71.0%) were positive for tpi and tcdB, while 274 samples (32.1%; 95% CI, 29.0-35.3%) were tcdB-negative. In contrast, 35 of 41 GDH-negative, toxin-positive/borderline samples (85.4%; 95% CI, 71.2-93.5%) were tcdB-negative. Still, 6 samples (14.6%; 95% CI, 6.5-28.8%) yielded positive PCR results for both genes. In conclusion, around 90% of the samples were analyzed appropriately by only applying EIAs. Approximately one third of the PCR-analyzed samples were tcdB-negative; thus, patients most likely did not require CDI treatment.

Investigation of the effect of the adsorbent DAV131A on the propensity of moxifloxacin to induce simulated Clostridioides (Clostridium) difficile infection (CDI) in an in vitro human gut model

JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY

Authors: Chilton, C. H.; Crowther, G. S.; Miossec, C.; de Gunzburg, J.; Andremont, A.; Wilcox, M. H.

Background: Clostridioides difficile infection (CDI) remains a high burden worldwide. DAV131A, a novel adsorbent, reduces residual gut antimicrobial levels, reducing CDI risk in animal models. Objectives: We used a validated human gut model to investigate the efficacy of DAV131A in preventing moxifloxacin-induced CDI. Methods: C. difficile (CD) spores were inoculated into two models populated with pooled human faeces. Moxifloxacin was instilled (43 mg/L, once daily, 7 days) alongside DAV131A (5 g in 18 mL PBS, three times daily, 14 days, Model A), or PBS (18 mL, three times daily, 14 days, Model B). Selected gut microbiota populations, CD total counts, spore counts, cytotoxin titre and antimicrobial concentrations (HPLC) were monitored daily. We monitored for reduced susceptibility of CD to moxifloxacin. Growth of CD in faecal filtrate and medium in the presence/absence of DAV131A, or inmedium pre-treated with DAV131A, was also investigated. Results: DAV131A instillation reduced active moxifloxacin levels to below the limit of detection (50 ng/mL), and prevented microbiota disruption, excepting Bacteroides fragilis group populations, which declined by similar to 3 log(10) cfu/mL. DAV131A delayed onset of simulated CDI by similar to 2 weeks, but did not prevent CD germination and toxin production. DAV131A prevented emergence of reduced susceptibility of CD to moxifloxacin. In batch culture, DAV131A had minor effects on CD vegetative growth, but significantly reduced toxin/spores (P < 0.005). Conclusions: DAV131A reduced moxifloxacin-induced microbiota disruption and emergence of antibiotic-resistant CD. Delayed onset of CD germination and toxin production indicates further investigations are warranted to understand the clinical benefits of DAV131A in CDI prevention.

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