Abstract
Enterotoxigenic Bacteroides fragilis (ETBF) has been recently associated with watery diarrheal disease in livestock and young children. These strains of B. fragilis secrete an extracellular heat-labile protein toxin with a mass of ˜20 kD. This toxin has been shown to have two major biological activities: stimulation of secretion in ligated intestinal segments in lambs and calves and alteration of the morphology of intestinal epithelial cell lines in vitro. In vivo the pathology of animal intestine exposed to an ETBF strain is disruption of the colonic epithelium with rounded, swollen surface epithelial cells. Similarly, in vitro intestinal epithelial cells derived from human colonic carcinomas become rounded and detach from neighboring cells after treatment with the ETBF toxin. These results suggest that the ETBF toxin is a secretory cytoskeleton-altering toxin. However, the contribution of the ETBF toxin to the pathogenesis of ETBF-associated diarrheal disease remains to be determined.
| Original language | English (US) |
|---|---|
| Pages (from-to) | S142-S148 |
| Journal | Clinical Infectious Diseases |
| Volume | 20 |
| DOIs | |
| State | Published - 1995 |
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ASJC Scopus subject areas
- Infectious Diseases
- Microbiology (medical)
- Immunology
Cite this
Enterotoxigenic bacteroides fragili. / Sears, Cynthia Louise; Myers, Lyle L.; Lazenby, Audrey; Van Tassell, Roger L.
In: Clinical Infectious Diseases, Vol. 20, 1995, p. S142-S148.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enterotoxigenic bacteroides fragili
AU - Sears, Cynthia Louise
AU - Myers, Lyle L.
AU - Lazenby, Audrey
AU - Van Tassell, Roger L.
PY - 1995
Y1 - 1995
N2 - Enterotoxigenic Bacteroides fragilis (ETBF) has been recently associated with watery diarrheal disease in livestock and young children. These strains of B. fragilis secrete an extracellular heat-labile protein toxin with a mass of ˜20 kD. This toxin has been shown to have two major biological activities: stimulation of secretion in ligated intestinal segments in lambs and calves and alteration of the morphology of intestinal epithelial cell lines in vitro. In vivo the pathology of animal intestine exposed to an ETBF strain is disruption of the colonic epithelium with rounded, swollen surface epithelial cells. Similarly, in vitro intestinal epithelial cells derived from human colonic carcinomas become rounded and detach from neighboring cells after treatment with the ETBF toxin. These results suggest that the ETBF toxin is a secretory cytoskeleton-altering toxin. However, the contribution of the ETBF toxin to the pathogenesis of ETBF-associated diarrheal disease remains to be determined.
AB - Enterotoxigenic Bacteroides fragilis (ETBF) has been recently associated with watery diarrheal disease in livestock and young children. These strains of B. fragilis secrete an extracellular heat-labile protein toxin with a mass of ˜20 kD. This toxin has been shown to have two major biological activities: stimulation of secretion in ligated intestinal segments in lambs and calves and alteration of the morphology of intestinal epithelial cell lines in vitro. In vivo the pathology of animal intestine exposed to an ETBF strain is disruption of the colonic epithelium with rounded, swollen surface epithelial cells. Similarly, in vitro intestinal epithelial cells derived from human colonic carcinomas become rounded and detach from neighboring cells after treatment with the ETBF toxin. These results suggest that the ETBF toxin is a secretory cytoskeleton-altering toxin. However, the contribution of the ETBF toxin to the pathogenesis of ETBF-associated diarrheal disease remains to be determined.
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UR - http://www.scopus.com/inward/citedby.url?scp=0029001721&partnerID=8YFLogxK
U2 - 10.1093/clinids/20.Supplement_2.S142
DO - 10.1093/clinids/20.Supplement_2.S142
M3 - Article
C2 - 7548537
AN - SCOPUS:0029001721
VL - 20
SP - S142-S148
JO - Clinical Infectious Diseases
JF - Clinical Infectious Diseases
SN - 1058-4838
ER -