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HOME > J. Microbiol > Volume 46(3); 2008 > Article
Research Support, Non-U.S. Gov't
Synergistic Effects of the Combination of Galangin with Gentamicin against Methicillin-Resistant Staphylococcus aureus
Young-Seob Lee 1, Ok-Hwa Kang 1, Jang-Gi Choi 1, You-Chang Oh 1, Hee-Sung Chae 1, Jong Hak Kim 1, Hyun Park 2, Dong Hwan Sohn 3, Zheng-Tao Wang 4, Dong-Yeul Kwon 1
Journal of Microbiology 2008;46(3):283-288.
DOI: https://doi.org/10.1007/s12275-008-0012-7
Published online: July 5, 2008
1Department of Oriental Pharmacy, College of Pharmacy, Wonkwang Oriental Medicines Research Institute, Wonkwang University, Jeonbuk 570-749, Republic of Korea, 2Department of Parasitology, College of Medicine, Wonkwang University, Jeonbuk 570-749, Republic of Korea, 3Department of Pharmacy, College of Pharmacy, Wonkwang University, Jeonbuk 570-749, Republic of Korea, 4Shanghai R&D Center for Standardization of Chinese Medicines (SCSCM), Shanghai University of TCM, Shanghai 201203, P. R. China
Corresponding author:  Dong-Yeul Kwon , Tel: 82-63-850-6802, 
Received: 10 January 2008   • Accepted: 22 April 2008
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Abstract

The antimicrobial killing activity toward methicillin-resistant Staphylococcus aureus (MRSA) has been a serious emerging global issue. New effective antimicrobials and/or new approaches to settle this issue are urgently needed. The oriental herb, Alpinia officinarum, has been used in Korea for several hundreds of years to treat various infectious diseases. As it is well known, one of the active constituents of Alpinia officinarum is galangin. Against the 17 strains, the minimum inhibitory concentrations (MICs) of galangin (GAL) were in the range of 62.5~125 μg/ml, and the MICs of gentamicin (GEN) ranged from 1.9 μg/ml to 2,000 μg/ml. The fractional inhibitory concentrations (FICs) of GAL, in combination with GEN, against 3 test strains were 0.4, 3.9, and 250 μg/ml, and were all 15.62 μg/ml in GEN. The FIC index showed marked synergism in the value range of 0.19 to 0.25. By determining time-kill curves, also confirmed the low synergism of the GAL and GEN combination against 4 h, 8 h, 12 h, and 24 h cultured MRSA. The time-kill study results indicated a low synergistic effect against 3 test strains. Thus, the mixture of GAL and GEN could lead to the development of new combination antibiotics against MRSA infection.

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    Synergistic Effects of the Combination of Galangin with Gentamicin against Methicillin-Resistant Staphylococcus aureus
    J. Microbiol. 2008;46(3):283-288.   Published online July 5, 2008
    DOI: https://doi.org/10.1007/s12275-008-0012-7
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