Immunoenzimatic detection of the Clostridium tetani bacterial toxin: an alternative to mice bioassays

Cell-free extracts from 20 strains of Clostridium tetani isolated from soil samples, were tested for tetanus toxin production using an enzyme immunoassay. All the extracts were classified as positive for the toxin presence, and eight of them showed absorbance values corresponding to tetanus toxin co...

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Bibliographic Details
Authors: Chaves, Fernando, León, Guillermo, Hernández Chavarría, Francisco
Format: article
Status:Published version
Publication Date:2006
Country:Costa Rica
Institution:Universidad de Costa Rica
Repository:Portal de Revistas UCR
Language:Spanish
OAI Identifier:oai:portal.ucr.ac.cr:article/14108
Online Access:https://revistas.ucr.ac.cr/index.php/rbt/article/view/14108
Access Level:Open access
Keyword:clostridium tetani
tetanus toxin
enzyme immunoassay
biological assay
Description
Summary:Cell-free extracts from 20 strains of Clostridium tetani isolated from soil samples, were tested for tetanus toxin production using an enzyme immunoassay. All the extracts were classified as positive for the toxin presence, and eight of them showed absorbance values corresponding to tetanus toxin concentrations between 3.2 and 88 ng/ml; thus, they fell within the linear absorbance range (0.135-0.317). All dilutions of toxin used to obtain the calibration curve (0.0071 to 1.1 ng) were lethal for mice.