Heat-stable enterotoxin from Escherichia coli: factors involved in growth and toxin production
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چکیده
منابع مشابه
Production and purification of heat-stable enterotoxin b from a porcine Escherichia coli strain.
Production of heat-stable enterotoxin b (STb) by porcine Escherichia coli strains belonging to serogroup O115 was evaluated in ligated intestinal segments of adult rats. The conditions for optimal production and detection of STb were studied by using the STb-producing strain 4247. As STb production was similar in complex Trypticase soy broth and minimal Davis medium, the latter was used for the...
متن کاملProtection in rats immunized with Escherichia coli heat-stable enterotoxin.
Rats immunized with a semipurified preparation of the Escherichia coli heat-stable (ST) enterotoxin conjugated with a protein carrier were protected against challenge with semipurified or purified ST and viable organisms of multiple heterologous serotypes that produce only ST (LT-/ST+), but they were not protected against heal-labile (LT) toxin or viable strains which produce LT either alone (L...
متن کاملHeat stable enterotoxin produced by Escherichia coli in acute diarrhoea.
We screened 569 children with acute onset diarrhoea from five Italian towns for heat stable enterotoxin produced by Escherichia coli. We compared an enzyme linked immunoabsorbent assay (ELISA) with the standard suckling mouse assay for detection of the enterotoxin. A total of 31 (5.4%) children were found who had strains of E coli that produced heat stable enterotoxin: 26 strains were positive ...
متن کاملHeat-stable enterotoxin-producing Escherichia coli O169:H41 in Japan.
To the Editor: Enterotoxigenic Escherichia coli (ETEC) cause diarrhea by producing either a heatlabile enterotoxin, a heat-stable enterotoxin (ST), or both. Consequently, ETEC can be identified either by detecting the enterotoxin in the culture fluid by immunologic assays or by detecting enterotoxin-coding genes with DNA probes or polymerase chain reaction (PCR) amplification. For many clinical...
متن کاملThe heat-stable toxin I gene from Escherichia coli 18D.
The heat-stable toxin I gene in the human Escherichia coli isolate 18D is the estA1 allele. The gene is not part of a composite transposon, but inspection of the flanking DNA sequences suggests that it was at one time part of a transposon. The hypothetical transposon originated from an event other than the occurrence that formed Tn1681.
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1978
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.20.2.352-359.1978