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Abstract Title:

Synergistic antibacterial effect of curcumin against methicillin-resistant Staphylococcus aureus.

Abstract Source:

Phytomedicine. 2013 Jun 15 ;20(8-9):714-8. Epub 2013 Mar 26. PMID: 23537748

Abstract Author(s):

Su-Hyun Mun, Dae-Ki Joung, Yong-Sik Kim, Ok-Hwa Kang, Sung-Bae Kim, Yun-Soo Seo, Youn-Chul Kim, Dong-Sung Lee, Dong-Won Shin, Kee-Tae Kweon, Dong-Yeul Kwon

Article Affiliation:

Su-Hyun Mun

Abstract:

Methicillin-resistant Staphylococcus aureus (MRSA) are spread among infected patients, with infection rates increasing at an alarming rate. Furthermore, increased resistance to antibiotics has resulted in serious challenges in the treatment of infectious diseases worldwide. Under the selection pressure of exposure to antibiotics, microorganisms evolve to survive against the new conditions imposed by therapy. Therefore, there exists a need to develop alternative natural or combination drug therapies. Curcumin (CCM), a natural polyphenolic flavonoid isolated from the rhizome of a plant, Curcuma longa Linné., has been found to possess many beneficial biological activities. The aim of this study was to investigate the synergistic effect of curcumin and antibiotics as well as to determine the antibacterial activity of CCM against specific MRSA strains. The antibacterial activity of CCM was assessed bythe broth microdilution method (by calculating the minimal inhibitory concentration [MIC]), checkerboard dilution test, and time-kill assay. Antimicrobial activity of CCM was observed against all tested strains. The MICs of CCM against 10 strains of S. aureus ranged from 125 to 250 μg/ml. In the checkerboard test, CCM markedly reduced the MICs of the antibiotics oxacillin (OXI), ampicillin (AMP), ciprofloxacin (CIP), and norfloxacin (NOR) used against MRSA. The time-kill curves showed that a combined CCM and OXI treatment reduced the bacterial counts below the lowest detectable limit after 24h. This study suggested that CCM reduced the MICs of several antibiotics tested, notably of OXI, AMP, CIP, and NOR, and that CCM in combination with antibiotics could lead to the development of new combination of antibiotics against MRSA infection.

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Sayer Ji
Founder of GreenMedInfo.com

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