The invention discloses an application of glycyrrhizic acid to prepare drugs for promoting medullary sheath regeneration to restrain
neurogenic inflammation. Experiment proves that the glycyrrhizic acid can effectively relieve inflammatory reactions and restrain demyelinating
lesion, and can relieve development of diseases courses of acute and chronic experimental autoimmuneencephalomyelitis. Theglycyrrhizic acid can promote medullary sheath regeneration in a cuprizone-induced cuprizone demyelination model, an
in vitro mechanism study finds that the glycyrrhizic acid can directly regulate a GSK-3 beta
signal channel to induce the polarization of oligodendroglia precursor cells, so that the mature polarization of the oligodendroglia cells can be notably promoted, and the synthesis of medullary sheath
protein is stimulated. A mechanism for promoting medullary sheath regeneration by the lycyrrhizic acid proves that a new basis is provided for treating demyelinating diseases and multiplesclerosis, and clinical-
usable new medicines are provided for
central nervous system demyelinating diseases and the like.