Antibacterial and Synergistic Activity of Prenylated Chalcone Isolated from the Roots of Sophora flavescens

作者：Lee Guem San; Kim Eun Sook; Cho Su In; Kim Jung Hoon; Choi Goya; Ju Young Sung; Park Sun Hwa; Jeong Seung Il; Kim Hong Jun^*

来源：Journal of the Korean Society for Applied Biological Chemistry, 2010, 53(3): 290-296.

DOI：10.3839/jksabc.2010.045

• enterotoxin gene
• MRSA
• Sophora flavescens
• THIPMC
• VRE

7,9,2',4'-Tetrahydroxy-8-isopentenyl-5-methoxychalcone (THIPMC), isolated from the roots of Sophora flavescens Ait., was found to be active against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE), either alone or in combination with ampicillin (AM) or gentamicin (GM), vis checkerboard assay. Minimum inhibitory concentrations ranged from to 8 mu g/mL for THIPMC, from 128 to 1024 mu g/mL for AM, and from 128 to 512 mu g/ mL for GM, respectively. The combinations of THIPMC plus AM or GM yielded a fractional inhibitory concentration index ranging from 0.188 to 0.375 mu g/mL, thereby indicating a synergistic effect. These findings suggest that THIPMC alone or in combination with antibiotics against MRSA might be useful for controlling MRSA infections. However, VRE infection was only effectively treated by THIPMC alone.

• 出版日期2010-6