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대황견우산(大黃牽牛散) 에탄올 추출물의 Methicillin 내성 Staphylococcus aureus에 대한 항균활성 연구
박주영 ( Ju-yeong Park ),나용수 ( Yong-su Na ),오공천 ( Gong-cheon Oh ),이상미 ( Sang-mi Lee ),최병권 ( Byeong-kwon Choi ),이윤승 ( Yoon-seung Lee ),송용선 ( Yung-sun Song ) 대한한의학회 한방재활의학과학회 2018 한방재활의학과학회지 Vol.28 No.2
Objectives The objective of this study is to determine the antimicrobial effect of Daehwanggyeonu-san(Dahwangqianniu-san,DGE) and synergistic effects with antibiotics oxacillin, ampicillin, and gentamicin against Methicillin-Resistant Staphylococcus aureus( MRSA). Methods The antibacterial activity of DGE extract was evaluated againest MRSA strains by using the Disc diffusion method, broth microdilution method(minimal inhibitory concentration; MIC), checkerboard dilution test. The checkerboard dilution test was used to examined synergetic effect of oxacillin, ampicillin, gentamicin, ciprofloxacin with DGE extract. Results DGE showed antimicrobial activity against MRSA with an MIC value of 125∼250 μg/mL. In the checkerboard test, the interation of DGE with all tested antibiotics produced almost synergy or partial synergy against MRSA. Conclusions This study shows that DGE reduced the MICs of several antibiotics tested, and a remarkable antibacterial effect of DGE, with membrane permeability enhancers and ATP synthase inhibitors. This study can be a valuable source for the development of a new drug with low MRSA resistance. (J Korean Med Rehabil 2018;28(2):21-35)