Document Detail


In vitro assays for detection of diphtheria toxin.
MedLine Citation:
PMID:  20692989     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Subunit-specific antipeptide antibodies have been used to develop a dot blot immunoassay for detection of diphtheria toxin (DT) produced by toxigenic strains of Corynebacterium diphtheriae. A detection limit of 0.1-1.0 ng DT/ml was obtained. DT is cytotoxic to cultured Vero cells and cell viability if conveniently assessed using a tetrazolium dye, MTT. This has been used as the basis of a cytotoxicity assay for DT, which has a detection limit of 20 pg/ml of biologically active toxin. Sixty isolates of C. diphtheriae were assayed for toxigenicity. There was complete concordance between the Vero cell cytotoxicity assay and guinea pig intradermal assay in vivo, demonstrating the utility of the cytotoxicity assay.
Authors:
C S Hoy; D Sesardic
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Toxicology in vitro : an international journal published in association with BIBRA     Volume:  8     ISSN:  0887-2333     ISO Abbreviation:  Toxicol In Vitro     Publication Date:  1994 Aug 
Date Detail:
Created Date:  2010-08-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8712158     Medline TA:  Toxicol In Vitro     Country:  England    
Other Details:
Languages:  eng     Pagination:  693-5     Citation Subset:  -    
Affiliation:
Division of Bacteriology, National Institute for Biological Standards and Control, South Mimms, Hertfordshire EN6 3QG, UK.
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