The Journal of pharmacy and pharmacology
-
J. Pharm. Pharmacol. · Oct 2007
Comparative StudyAntispasmodic activity of licochalcone A, a species-specific ingredient of Glycyrrhiza inflata roots.
Licochalcone A, a species-specific and characteristic retrochalcone ingredient of Glycyrrhiza inflata root, has been shown to possess multiple bioactive properties. However, its muscle relaxant activity has not been reported previously. ⋯ Furthermore, the IC50 (22.1 +/- 10.9 microM) of licochalcone A against cAMP PDE was similar to that of IBMX (26.2 +/- 7.4 microM). These results indicated that licochalcone A may have been responsible for the relaxant activity of G. inflata root and acted through the inhibition of cAMP PDE.