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Listeria monocytogenes is an opportunistic pathogen that causes infections collectively termed listeriosis, which are related to the ingestion of food contaminated with these gram-positive rods. The pathogenicity of L. monocytogenes is detennined by the following virulence factors: listeriolysin O, protein ActA, two phospholipases C, internalins (InlA and InlB), protein CwhA and a metalloprotease...
Shiga-like toxin-producing (SLTEC) Escherichia coli strains are one of the most important food borne emerging pathogens. One hundred and fifty-seven E. coli strains isolated from 39 children with diarrhea of unknown origin and one hundred and five E. coli strains from 20 healthy children were examined for Shiga-like toxin production in Vero cell line assay. The synthesis of Shiga-like toxin was observed...
The interaction of CD28 with one of the B7 molecules (CD80 and CD86) on professional antigen-presenting cells (APC) is generally considered to be the most important co-stimulatory signal for T cell activation. Several lines of evidence suggest that dendritic cells (DC), the most potent antigen presenting cells known, play a role in the immunological control of herpes simplex virus (HSV) infections...
In this preliminary report we show that a 29 kDa surface protein of Listeria monocytogenes EGD removed from cells with 4 M LiCl has peptidoglycan (murein) hydrolyzing activity, as revealed by zymographic analysis using Bacillus subtilis murein and heat-killed Micrococcus luteus cells casted in the gel. Following two-dimensional electrophoresis, the protein was electroblotted to PVDF membrane and its...
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