Advances in Animal and Veterinary Sciences
Effect of Mycoplasma bovis on Production of Pro-Inflammatory Cytokines by Peripheral Blood Mononuclear Cells
Rekha Valsala1, Rajneesh Rana2*, Arun Thachappully Remesh1, Sabarinath Thankappan3, Sabita Behera11Division of Bacteriology & Mycology, IVRI, Izatnagar, Bareilly, UP, India; 2Division of Bacteriology & Mycology, IVRI, Izatnagar, Bareilly, UP, India; 3Division of Bacteriology & Mycology, IVRI, Izatnagar, Bareilly, UP, India.
Abstract | Mycoplasma bovis is an important bovine pathogen associated with calf pneumonia, mastitis, arthritis and sepicemia. It is known to persist in phagocytic and nonphagocytic cells and disseminate to various organs causing systemic infection. In this study, the effect of live M. bovis on pro-inflammatory cytokine production by bovine peripheral blood mononuclear cells was assessed by relative quantification. Temporal change in cytokine levels was assessed at 8 hourly intervals. IL-6 was upregulated (9.32 fold at 24h) by live M. bovis at MOI of 1: 10, while TNF-α levels remained unchanged over time. IL-1 and TNF-α levels were not altered by M. bovis as compared to the control group. This showed that pro-inflammatory cytokines are not much upregulated at low multiplicity of infection.
Keywords | Mycoplasma bovis, IL-1, IL-6, TNF-α, Bovine PBMC