Animal Health
Authors: Mohamed Osman (Iowa State University) , Judith Stabel (United States Department of Agriculture) , Jesse M. Hostetter (Iowa State University) , Daniel S. Nettleton (Iowa State University) , Donald C. Beitz (Iowa State University)
The immune responses of 390 BALB/c mice fed the probiotic Lactobacillus acidophilus strain NP51 ® and infected with Mycobacterium avium subspecies paratuberculosis (MAP) were evaluated in a 6-month trial. Mice were randomized to nine treatment groups that fed either viable- or heat-killed NP51 and inoculated with either viable- or heatkilled MAP or sterile phosphate-buffered saline. Feeding the NP51 resulted in higher numbers of T lymphocytes in the spleen including the CD8 + cytotoxic T lymphocytes. In addition, feeding the NP51 lowered the number of immune suppressive T regulatory cells CD4 + CD25 + and CD8 + CD25 + cells in the spleen. Additionally, feeding the NP51 resulted in higher concentration of interferon-gamma in the supernatant of splenocytes cultured in vitro. These results suggest that feeding the NP51 to BALB/c mice might prevent the progression of MAP infection in mice.
Keywords: ASL R2487
How to Cite: Osman, M. , Stabel, J. , Hostetter, J. M. , Nettleton, D. S. & Beitz, D. C. (2010) “Prevention of Mycobacterium avium Subspecies paratuberculosis(MAP) Infection in Balb/c mice by Feeding Lactobacillus acidophilus Strain NP-51®”, Iowa State University Animal Industry Report. 7(1). doi: https://doi.org/10.31274/ans_air-180814-944