نتایج جستجو برای: stable enterotoxin

تعداد نتایج: 264897  

Journal: :Infection and immunity 1992
J G Mainil F Bex P Dreze A Kaeckenbeeck M Couturier

Plasmid DNA hybridization with probes for virulence factors used for basic replicons of plasmids was used to identify the virulence plasmids of a collection of enterotoxigenic Escherichia coli isolates from cattle. The virulence probes were derived from the genes coding for the heat-stable enterotoxin STaP and for the F5 (K99) and F41 fimbrial adhesins. The replicon probes were derived from 16 ...

Journal: :Infection and immunity 1974
D J Evans D G Evans S L Gorbach

Polymyxin B-induced release of enterotoxin from Escherichia coli strain H-10407 was demonstrated. Incubation of E. coli cells derived from 6-h cultures with polymyxin caused the rapid release of enterotoxin with a molecular weight of approximately 20,000, as estimated by the gel filtration technique. The rapidity of the release of enterotoxin indicates that it probably resides in the periplasmi...

Journal: :Revue scientifique et technique 2013
S A Wani I Hussain S A Beg M A Rather Z A Kabli M A Mir Y Nishikawa

Polymerase chain reaction assays and culture were used to investigate 728 faecal samples from 404 calves (286 diarrhoeic, 118 healthy) and 324 lambs (230 diarrhoeic, 94 healthy) in Kashmir, India, for the presence of enterotoxigenic Escherichia coli (ETEC), enteroaggregative E. coli (EAEC), diffusely adherent E. coli (DAEC) and salmonellae. Antimicrobial sensitivity patterns were also investiga...

ژورنال: Medical Laboratory Journal 2014
Bahador, N, Dadgar, T, Ghaemi, E, Imani Fooladi, A, Kamareie, F,

Abstract Background and Objective: The main cause of spreading staphylococcal infections among patients is the healthy carriers working in hospitals. With the secretion of different sorts of toxins such as entrotoxin, this bacteria can provide the conditions for attacking on the host. The main objective of this study is identification of the characteristics and differences in the Staphylococc...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1986
J Gariépy G K Schoolnik

The Escherichia coli heat-stable enterotoxin, STIb was prepared by solid-phase peptide synthesis and purified to homogeneity by high-pressure liquid chromatography. This analogue was iodinated and shown to bind specifically to rat intestinal membranes. The radiolabeled peptide was derivatized at the amino terminus with the photoreactive heterobifunctional crosslinking agent N-hydroxysuccinimidy...

Journal: :archives of pediatric infectious diseases 0
razieh nezarieh department of microbiology and virology, kerman university of medical sciences, kerman, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences) mohammad reza shakibaie department of microbiology and virology, kerman university of medical sciences, kerman, ir iran; research center for infectious diseases and tropical medicine, kerman university of medical sciences, kerman, ir iran; department of microbiology and virology, kerman university of medical sciences, kerman, ir iran. tel: +98-3419133408226, fax: +98-3413221671سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences) hossein hosseini nave department of microbiology and virology, kerman university of medical sciences, kerman, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences) amin norouzi department of microbiology and virology, kerman university of medical sciences, kerman, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences) gholamabas salajegheh division of internal medicine, department of infectious diseases, afzalipour hospital, kerman, ir iran mehdi hayatbakhsh gastroenterology and hepatology research center, kerman university of medical sciences, kerman, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences)

conclusions overall, except for pcvd432 and aggr, we detected high heterogeneity of virulence factors among eaec isolates causing diarrhea in children. one set of genes, in the combination, pic- sepa- agg4a, was associated with strong biofilm. results among the 322 e. coli isolated, 23 were identified as eaec. all eaec carried a 630-bp fragment of the plasmid (paa) encoded pcvd432 and aggr gene...

Journal: :Applied and environmental microbiology 2000
S Schlör S Riedl J Blass J Reidl

One of the most common bacterially mediated diarrheal infections is caused by enterotoxigenic Escherichia coli (ETEC) strains. ETEC-derived plasmids are responsible for the distribution of the genes encoding the main toxins, namely, the heat-labile and heat-stable enterotoxins. The origins and transfer modes (intra- or interplasmid) of the toxin-encoding genes have not been characterized in det...

Journal: :The Journal of biological chemistry 1976
L Spero B Y Griffin J L Middlebrook J F Metzger

Two peptide bonds of staphylococcal enterotoxin C, were hydrolyzed concurrently at quite different rates during limited digestion with trypsin. A Lys-Val at about position 92 in the disulfide loop was the first bond cleaved, followed by a Lys-Asx at about position 57 on the NH2-terminal side of the loop. Preparations of singly cleaved material (enterotoxin C1-T1) contained about 93% of the clea...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2015
Ana Carolina Amaral Lopes Luciano Moura Martins Maria Silvia Viccari Gatti Cristhiane Moura Falavina Dos Reis Ernesto Hofer Tomomasa Yano

In the present study enterotoxic and cytotoxic activities of twenty Aeromonas caviae strains were examined. They originated from fecal specimens of patients with acute diarrhea during an outbreak in Brazil in 2004. Culture supernatants of fourteen strains (70%) caused fluid accumulation in rabbit ileal intestinal loops and in suckling mice assays, and also showed a cytotoxic activity in Vero an...

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