Evaluation of Three Methods of Platelet-Rich Plasma for Treatment of Equine Distal Limb Skin Wounds.

The research focuses on assessing the efficacy of three methods of Platelet-Rich Plasma (PRP) – autologous PRP, autologous PRP gel and homologous PRP – in the treatment of equine distal limb skin wounds and how healing time correlates with platelet count. It was found that the autologous PRP gel treatment was most effective, reducing wound healing time by 15 days compared with the control group.

Research Methodology

• Eight healthy adult horses were used for the study.
• Four skin wounds of 4 cm each were surgically created on the dorsolateral aspect of the third metacarpus in each horse.
• Each wound was randomly assigned one of the three different PRP treatments or a saline solution (acting as a control).
• The horses were monitored every two weeks throughout the wound healing process, with wound size being measured using a tape.
• Skin biopsies were taken on the 15th and 30th day after initial PRP treatment to investigate the microscopic effects of the treatments.

Findings

• Autologous PRP gel treatment was found to reduce wound healing time by 15 days compared to wounds treated with saline solution.
• Under histological examination, wounds treated with autologous PRP gel showed mild inflammation and mild to moderate new blood vessel formation. This indicates a positive response to wound healing.
• The study findings suggest that the gel form of PRP effectively accelerates wound healing, superior to other PRP treatments and saline solution.

Recommendations

• Homologous PRP, although not demonstrating the same efficacy as autologous PRP gel, is recommended for the recovery of horses with compromised hemodynamic conditions. This is because it is derived from a donor, allowing for treatment without potentially compromising the animal’s own blood supply.
• The study provides valuable insight into equine wound care and suggests the potential expansion of PRP treatments in equine medicine.