The Equine Hoof: Laminitis, Progenitor (Stem) Cells, and Therapy Development.
Authors: Yang, Lopez
Journal: Toxicologic pathology
Summary
# Editorial Summary: The Equine Hoof, Laminitis, and Progenitor Cell Therapy Laminitis remains one of the most consequential conditions in equine medicine, yet despite decades of refinement in systemic therapy, mechanical support, and farriery management, we still lack reliable mechanisms to restore genuinely healthy tissue architecture following acute inflammation of the lamellae. Yang and Lopez's 2022 review synthesises current understanding of hoof anatomy—particularly the intricate dermal-epidermal connections of primary and secondary lamellae—alongside the pathophysiological cascade of laminitis, which extends beyond inflammatory mediators to encompass broader tissue degeneration affecting growth, repair, and permanent structural conformation. The authors highlight a significant gap in equine research: whilst progenitor (stem) cells have been extensively characterised in other tissues and shown to contribute meaningfully to regeneration and homeostasis, comparable investigation into equine hoof progenitor cells remains relatively sparse. Their conclusion is compelling for practitioners seeking to innovate beyond current standards of care—developing in vitro hoof tissue models using progenitor cells and translating these advances to clinical applications could fundamentally alter how we prevent and treat laminitis, transforming management from damage mitigation to genuine tissue restoration.
Read the full abstract on PubMed
Practical Takeaways
- •Laminitis causes permanent structural changes in hoof tissue; focus on prevention and early intervention using current best-practice therapies and mechanical support rather than expecting full restoration.
- •Progenitor cell-based therapies are emerging as a potential future treatment avenue but are not yet clinically established for equine hoof tissue repair.
- •Understanding hoof anatomy and laminitis pathophysiology is essential, as current treatments manage symptoms and support healing but do not reliably restore normal tissue architecture.
Key Findings
- •Laminitis has been documented throughout the history of domesticated horses and ranges from mild to severe with acute, chronic, or transitional presentations.
- •Damage to dermal-epidermal connections in primary and secondary lamellae is associated with lifelong changes in hoof growth, repair, and conformation.
- •Current standards of care including systemic and local therapies plus mechanical hoof support lack consistent mechanisms to restore healthy tissue formation post-laminitis.
- •Equine hoof progenitor cells remain understudied compared to progenitor cell contributions in other tissues, but offer potential for developing in vitro tissue models and clinical therapies.