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Antimicrobial Agents and Chemotherapy, September 2002, p. 3071-3074, Vol. 46, No. 9
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.9.3071-3074.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

In Vitro and In Vivo Antibacterial Activities of DW286, a New Fluoronaphthyridone Antibiotic

Hee-Jeong Yun,1 Yu-Hong Min,1 Jung-A Lim,1 Jin-Wook Kang,1 So-Young Kim,1 Mi-Jeong Kim,1 Jae-Hee Jeong,1 Yun-Jeong Choi,1 Hyun-Jin Kwon,2 Yong-Ho Jung,2 Mi-Ja Shim,3 and Eung-Chil Choi1*

College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 151-742,1 Dong-Wha Pharmaceutical Ind. Co., Ltd., Anyang, Kyonggi 430-017 ,2 Department of Life Science, The University of Seoul, Seoul 130-743, Korea3

Received 3 December 2001/ Returned for modification 28 March 2002/ Accepted 26 May 2002

The in vitro and in vivo activities of DW286, a novel fluoronaphthyridone with potent antibacterial activity, were compared with those of ciprofloxacin, gemifloxacin, sparfloxacin, and trovafloxacin. Against gram-positive bacteria, such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, and Enterococcus faecalis, the in vitro activity of DW286 was stronger than that of any other reference antibiotic. Against gram-negative bacteria, the activity of DW286 was similar to those of trovafloxacin and gemifloxacin but was weaker than that of ciprofloxacin. In a mouse systemic infection caused by three S. aureus strains, including methicillin-resistant S. aureus and quinolone-resistant S. aureus (QRSA), DW286 demonstrated the most potent activity, as found in vitro. Specially, DW286 is >=8-fold more active against QRSA than the other fluoroquinolones. And the 50% protective doses for DW286 were correspondent with the in vitro activities.


* Corresponding author. Mailing address: College of Pharmacy, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu, Seoul 151-742, Korea, Phone: 82-2-880-7874. Fax: 82-2-886-5802. E-mail: ecchoi{at}snu.ac.kr.


Antimicrobial Agents and Chemotherapy, September 2002, p. 3071-3074, Vol. 46, No. 9
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.9.3071-3074.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.




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  • Kwon, A.-R., Min, Y.-H., Ryu, J.-M., Choi, D.-R., Shim, M.-J., Choi, E.-C. (2006). In vitro and in vivo activities of DW-224a, a novel fluoroquinolone antibiotic agent. J Antimicrob Chemother 58: 684-688 [Abstract] [Full Text]  
  • Kim, E.-J., Kim, K.-S., Shin, W.-H. (2005). Electrophysiological safety of DW-286a, a novel fluoroquinolone antibiotic agent. Hum Exp Toxicol 24: 19-25 [Abstract]  
  • Kim, M.-J., Yun, H.-J., Kang, J.-W., Kim, S., Kwak, J.-H., Choi, E.-C. (2003). In vitro development of resistance to a novel fluoroquinolone, DW286, in methicillin-resistant Staphylococcus aureus clinical isolates. J Antimicrob Chemother 51: 1011-1016 [Abstract] [Full Text]