ifn-gamma induces the erosion of preexisting cd8 t cell memory during infection with a heterologous intracellular bacterium.memory t cells are critical for the control of intracellular pathogens and require few signals for maintenance; however, erosion of established preexisting memory cd8(+) t cells has been shown to occur during infection with heterologous viral infections. we evaluated whether this also occurs during infection with various intracellular bacteria and what mechanisms may be involved. we demonstrate that erosion of established memory is also induced during infection of mice with various intracellular ...200818641306
potential antimicrobials to control listeria monocytogenes in vacuum-packaged cold-smoked salmon pâté and the wake of recent outbreaks associated with listeria monocytogenes in ready-to-eat foods and an increasing desire for minimally processed foods, there has been a burgeoning interest in the use of natural antimicrobials by the food industry to control this pathogen. the minimum inhibitory concentrations (mics) of nisin and salts of organic acids (sodium lactate (sl), sodium diacetate (sd), sodium benzoate (sb), and potassium sorbate (ps)) against twelve strains of l. monocytogenes in a tsbye ...200818308410
actin polymerization is induced by arp2/3 protein complex at the surface of listeria monocytogenes.the pathogenic bacterium listeria monocytogenes is capable of directed movement within the cytoplasm of infected host cells. propulsion is thought to be driven by actin polymerization at the bacterial cell surface, and moving bacteria leave in their wake a tail of actin filaments. determining the mechanism by which l. monocytogenes polymerizes actin may aid the understanding of how actin polymerization is controlled in the cell. actin assembly by l. monocytogenes requires the bacterial surface p ...19979000076
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