Oral treatment with Saccharomyces cerevisiae strain UFMG 905 modulates immune responses and interferes with signal pathways involved in the activation of inflammation in a murine model of typhoid fever - PubMed (original) (raw)
. 2011 Apr;301(4):359-64.
doi: 10.1016/j.ijmm.2010.11.002. Epub 2011 Jan 13.
Samir D A Elian, Angélica T Vieira, Fabiana C P Tiago, Ariane K S Martins, Flávia C P Silva, Ericka L S Souza, Lirlândia P Sousa, Helena R C Araújo, Paulo F Pimenta, Cláudio A Bonjardim, Rosa M E Arantes, Mauro M Teixeira, Jacques R Nicoli
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- PMID: 21236729
- DOI: 10.1016/j.ijmm.2010.11.002
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Oral treatment with Saccharomyces cerevisiae strain UFMG 905 modulates immune responses and interferes with signal pathways involved in the activation of inflammation in a murine model of typhoid fever
Flaviano S Martins et al. Int J Med Microbiol. 2011 Apr.
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Abstract
Salmonella spp. are Gram-negative, facultative, intracellular pathogens that cause several diarrheal diseases ranging from self-limiting gastroenteritis to typhoid fever. Previous results from our laboratory showed that Saccharomyces cerevisiae strain UFMG 905 isolated from 'cachaça' production presented probiotic properties due to its ability to protect against experimental infection with Salmonella enterica serovar Typhimurium. In this study, the effects of oral treatment with S. cerevisiae 905 were evaluated at the immunological level in a murine model of typhoid fever. Treatment with S. cerevisiae 905 inhibited weight loss and increased survival rate after Salmonella challenge. Immunological data demonstrated that S. cerevisiae 905 decreased levels of proinflammatory cytokines and modulated the activation of mitogen-activated protein kinases (p38 and JNK, but not ERK1/2), NF-κB and AP-1, signaling pathways which are involved in the transcriptional activation of proinflammatory mediators. Experiments in germ-free mice revealed that probiotic effects were due, at least in part, to the binding of Salmonella to the yeast. In conclusion, S. cerevisiae 905 acts as a potential new biotherapy against S. Typhimurium infection due to its ability to bind bacteria and modulate signaling pathways involved in the activation of inflammation in a murine model of typhoid fever.
Copyright © 2010 Elsevier GmbH. All rights reserved.
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