Linked Life Data

3143036

Source:http://linkedlifedata.com/resource/pubmed/id/3143036

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-1-4
pubmed:abstractText
A cytotoxin to Vero cells (Vero toxin) was purified from Escherichia coli O157:H7 isolated from a patient with hemorrhagic colitis by ammonium sulfate fractionation, DEAE-cellulose column chromatography, repeated chromatofocusing column chromatography and repeated high performance liquid chromatography. About 440 micrograms of purified Vero toxin was obtained from 12 liters of culture with a yield of about 22%. The purified Vero toxin showed similar cytotoxic activity to that of Shiga toxin to Vero cells and killed about 50% of the Vero cells at 1 pg. The activity was lost on heating the toxin at 80 degrees C for 10 minutes, but not at 60 degrees C for 10 minutes. The toxin also showed lethal toxicity to mice when injected intraperitoneally, the LD50 being 1 ng per mouse. The purified Vero toxin consisted of A and B subunits with molecular weights of about 35,000 and 10,700, respectively, which were slightly larger than those of Shiga toxin. On polyacrylamide gel disc electrophoresis, the mobility of the purified Vero toxin differed from that of Shiga toxin. The isoelectric point of the toxin was 4.1, which was also different from that of Shiga toxin (pI = 7.0). Furthermore, Vero toxin and Shiga toxin were found to be immunologically unrelated; anti-Vero toxin did not react with Shiga toxin, and similarly anti-Shiga toxin did not react with the Vero toxin in either the Ouchterlony double gel diffusion test or enzyme-linked immunosorbent assay. The Vero toxin purified in this work was found to be immunologically identical to VT2 and Shiga-like toxin II reported previously.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0882-4010
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
21-30
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Purification and some properties of a Vero toxin from Escherichia coli O157:H7 that is immunologically unrelated to Shiga toxin.
pubmed:affiliation
Department of Bacterial Infection, University of Tokyo, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't