Systemic administration of propentofylline, ibudilast, and (+)-naltrexone each reverses mechanical allodynia in a novel rat model of central neuropathic pain.
Ellis A, Wieseler J, Favret J, Johnson KW, Rice KC, Maier SF, Falci S, Watkins LR. Systemic administration of propentofylline, ibudilast, and (+)-naltrexone each reverses mechanical allodynia in a novel rat model of central neuropathic pain. J Pain. 2014 Apr; 15(4):407-21.