Gb3/CD77 is a glycolipid antigen, specifically expressed on two different B-cell populations, Burkitt's lymphoma and a subset of tonsillar B-lymphocytes located in germinal centers, which could be the normal counterpart of Burkitt cells. Both Gb3/CD77(+) populations have recently been shown to enter programmed cell death (apoptosis) readily. Here we show that verotoxin, also called Shiga-like t...

diarrhea is an important hygienic problem in under development countries. among pathogenic agents escherichia coli is the most etiologic agent of diarrhea in children below five years old. some e. coli strains produce cytotoxins that have cytopathic effect on vero cell and identified as verotoxin. this study performs for resolve frequency of vero toxigenic escherichia coli (vtec) in kerman city...

249 enteropathogenic Escherichia coli (EPEC) strains from faecal samples of 90 children with diarrhoea were examined for verotoxin (VT) production. Polymyxin B extracts of 61 strains belonging to 9 serogroups from 35 children produced various verotoxins (VTs). The titre of these various VTs ranged from I :40 to I: 12HO. Of the 26 (43.6%) adherent strains, 19 (73%) exhibited localized adhere...

Enterohemorrhagic Escherichia coli (EHEC) is a subset of pathogenic E. coli that can cause diarrhea or hemorrhagic colitis in humans. Hemorrhagic colitis occasionally progresses to hemolytic uremic syndrome (HUS), an important cause of acute renal failure in children and morbidity and mortality in adults. Enterohemorrhagic E. coli O157:H7 (EHEC O157:H7) has been known to cause these syndromes s...

............................................................................................................................ 1 List of Abbreviations ........................................................................................................ 2 CHAPTER 1: GENERAL INTRODUCTION ................................................................. 3 1-1 Background .............................

Shiga toxin-producing Escherichia coli (E. coli) strains (STEC) are most important food borne pathogenic bacteria. STEC are agents of serious illnesses such as food poisoning, dysentery, hemorrhagic colitis and hemolytic–uremic syndrome (HUS). Most of the cases in hemorrhagic colitis, HUS and sudden death in all ages are related to 0157:H7 serotypes that are considered as the most important ser...

249 enteropathogenic escherichia coli (epec) strains from faecal samples of 90 children with diarrhoea were examined for verotoxin (vt) production. polymyxin b extracts of 61 strains belonging to 9 serogroups from 35 children produced various verotoxins (vts). the titre of these various vts ranged from i :40 to i: 12ho. of the 26 (43.6%) adherent strains, 19 (73%) exhibited localized adherence ...