Neuropathic Pain model in Pigs
Preclinical rodent models largely contribute to our understanding of chronic neuropathic pain, however these animal models are limiting due to poor clinical translation. Since pigs share similarities with humans, such as skin innervation and neurological resemblance, MD Biosciences developed a pig model for chronic pain caused by surgically-induced peripheral neuritis (PNT) (Castel et al., 2016). In the model, 75% of animals exhibit mechanical and tactile allodynia by day 28 post surgery, demonstrating painful neuropathy. We also showed that morphine and gabapentin inhibited hypersensitivity to von Frey filaments and feather stimuli, reversing spontaneous pain-related behavior in a dose-related manner.
In a study, we aimed to evaluate the effect of Gabapentin, Aprepitant and Morphine in the pig PNT model. The graph shows the behavior score as a result of the nerve injury before and post treatment.
Other data obtained in this study were Von Frey, Open Field, Walking Distance and Skin Biomarkers for nerve analysis.