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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Lactobacillus casei administration reduces lung injuries in a Streptococcus pneumoniae infection in mice.

The effect of the oral administration of Lactobacillus casei on the prevention of a Streptococcus pneumoniae lung infection in a mouse experimental model was studied, analyzing the innate and specific immune response. Adult Swiss albino mice were treated with L. casei (10(9)CFU/day) for 2, 5 and 7d. Mice were infected intranasally with S. pneumoniae (10(6)CFU/mouse) after each treatment and the microbiological, histopathological and host responses were determined for 15d after infection. Feeding L. casei for 2d induced a faster clearance of S. pneumoniae, with a lower number of pneumococci in lung and a shorter period of septicemia than in the control group. L. casei administration induced activation of phagocytes as evidenced by the strong myeloperoxidase activity and the nitro blue tetrazolium assay in lung. Mice given L. casei for 2d showed higher levels of anti-pneumococcal serum IgG and bronchoalveolar lavage IgA than the control mice. The group fed L. casei for 2d could beneficially regulate the balance between tumor necrosis factor alpha and interleukin 10, allowing a more effective immune response against infection and modulating the inflammatory response, with less damage to the lung.[1]

References

  1. Lactobacillus casei administration reduces lung injuries in a Streptococcus pneumoniae infection in mice. Racedo, S., Villena, J., Medina, M., Ag??ero, G., Rodr??guez, V., Alvarez, S. Microbes Infect. (2006) [Pubmed]
 
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