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We have recently demonstrated that an attenuated strain of Salmonella enterica serovar Typhimurium unable to synthesize the zinc transporter ZnuABC (S. Typhimurium ΔznuABC), is able to protect mice against systemic and enteric salmonellosis and is safe in pigs. Here, we have tested the protective effects of S. Typhimurium ΔznuABC in pigs. Resistance to challenge with the fully virulent strain S. Typhimurium...
It has been demonstrated that antibodies specific for O-PS antigen of Brucella smooth strains are involved in the protective immunity of brucellosis. Since the rough strain Brucella melitensis B115 was able to protect mice against wild Brucella strains brucellosis despite the lack of anti-OPS antibodies, in this study we evaluated the biological significance of antibodies induced by this strain, directed...
Brucellosis is one of the most common bacterial zoonoses worldwide. Infection is usually chronic and sometimes lifelong. Different mechanisms can be postulated as to the basis for the induction of the chronic status of brucellosis, but a comprehensive knowledge is still lacking. Here, we carried out a series of experiments in order to assess if the persistence of Brucella abortus could be ascribed...
Salmonella enterica has long been recognised as an important zoonotic pathogen of economic significance, both in animals and humans. We have recently shown that inactivation of the ZnuABC high affinity zinc transporter significantly affects the pathogenicity of S. enterica, likely due to zinc shortage in the eukaryotic tissues. Here, we demonstrate that a S. enterica serovar Typhimurium znuABC deleted...
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