Chronic Inflammatory Lameness Increases Cytokine Concentration in the Spinal Cord of Dairy Cows.
Authors: Herzberg Daniel, Strobel Pablo, Ramirez-Reveco Alfredo, Werner Marianne, Bustamante Hedie
Journal: Frontiers in veterinary science
Summary
Chronic lameness in dairy cattle involves far more than local tissue damage at the hoof; this research demonstrates that persistent inflammatory pain triggers a measurable neuroinflammatory cascade within the spinal cord itself. Using tissue samples from the lumbar dorsal horn of seven lame and seven sound cows, researchers quantified ten key cytokines and found that lame animals exhibited significantly elevated concentrations of pro-inflammatory markers including TNF-α, IL-1α, IL-13, CXCL10, CXCL9, IFN-α and IFN-γ, whilst IL-21 levels were notably suppressed. This cytokine profile indicates central sensitisation—a state where pain pathways become hyperexcitable—suggesting that chronic lameness fundamentally alters how the nervous system processes and amplifies pain signals. For practitioners managing lame cattle, these findings underscore why pain control must address both the peripheral lesion and the resulting neuroinflammatory state; early, aggressive analgesia alongside local treatment may be essential to prevent maladaptive changes in the spinal cord that could perpetuate pain even after the original injury resolves.
Read the full abstract on PubMed
Practical Takeaways
- •Chronic lameness in dairy cows triggers central nervous system inflammation, suggesting pain management and early treatment of hoof problems are critical to prevent long-term neurological changes
- •The neuroinflammatory response documented here supports aggressive prevention and treatment protocols for lameness in dairy herds to minimize systemic effects beyond local hoof pathology
- •Understanding the CNS involvement in lameness may help explain why some chronically lame cows show persistent pain behaviors even after local lesions are treated
Key Findings
- •Lame cows showed significantly elevated concentrations of TNF-α, IL-1α, IL-13, CXCL10, CXCL9, IFN-α, and IFN-γ in the dorsal horn of the spinal cord compared to non-lame controls
- •IL-21 concentration was decreased in lame cows versus non-lame cows
- •No significant differences were found in IL-36ra and MIP-1β concentrations between lame and non-lame cows
- •Chronic painful hoof inflammation in dairy cows induces a neuroinflammatory state in the central nervous system