Nerve regeneration and / or protective agents

May also be EP2 agonist have EP3 agonistic effect, since it has a nerve regeneration and / or protective effect, for example, lower and upper motor neuron diseases, nerve root disorders, plexus disorders, thoracic outlet compression syndrome, peripheral neuropathy , neurofibromatosis, is effective as a peripheral nervous system disorder therapeutics such as neuromuscular transmission disease. Further, EP2 agonist having an EP3 agonistic effect has little influence on the circulatory system, which is safe and effective nerve regeneration and / or protective agents.