2002
DOI: 10.1590/s0102-09352002000300019
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Production and purification of epsilon prototoxin produced by Clostridium perfringens type D

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Cited by 7 publications
(5 citation statements)
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“…ETX was produced and purified according to the method described by Parreiras et al 6 Being the main producer of ETX and main causer of disease, C. perfringens type D strain was fermented in a bench bioreactor (BioFlo 110, New Brunswick Scientific C.O., UK) and concentrated 10 times using an ultrafiltration system with a 10 kDa membrane (Amicon, Beverly, USA). The toxin was purified by ion exchange chromatography (DEAE-Sepharose CL6B).…”
mentioning
confidence: 99%
“…ETX was produced and purified according to the method described by Parreiras et al 6 Being the main producer of ETX and main causer of disease, C. perfringens type D strain was fermented in a bench bioreactor (BioFlo 110, New Brunswick Scientific C.O., UK) and concentrated 10 times using an ultrafiltration system with a 10 kDa membrane (Amicon, Beverly, USA). The toxin was purified by ion exchange chromatography (DEAE-Sepharose CL6B).…”
mentioning
confidence: 99%
“…Samples of C. perfringens type D, donated by the INTA -Argentina, were used for the production and purification of the epsilon prototoxin as described in Parreiras et al (2002) and Carvalho et al (2006).…”
Section: Methodsmentioning
confidence: 99%
“…Essa toxina é secretada como protoxina e sua ativação ocorre após clivagem enzimática pela tripsina, resultando em um peptídeo de aproximadamente 31,2KDa, responsável pelas alterações patológicas observadas (PETIT et al, 1997 A soroneutralização em camundongos (SNC), técnica padrão empregada no diagnóstico da enterotoxemia, permite a detecção da toxina épsilon, tanto no conteúdo intestinal de animais acometidos (LOBATO et al, 2006), quanto em sobrenadantes de culturas de C. perfringens tipo D, utilizados na indústria e em centros de pesquisa (BRASIL, 1997). Apesar da reconhecida sensibilidade, esse bioensaio é demorado e relativamente caro, além de gerar inúmeras discussões éticas por parte de grupos humanitários e pesquisadores que buscam o bem-estar animal (PARREIRAS et al, 2002).…”
Section: Introductionunclassified