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Antimicrobial Agents and Chemotherapy, February 2002, p. 367-370, Vol. 46, No. 2
0066-4804/01/$04.00+0     DOI: 10.1128/AAC.46.2.367-370.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

In Vitro and In Vivo Activities of CS-758 (R-120758), a New Triazole Antifungal Agent

Yasuki Kamai,1* Tamako Harasaki,1 Takashi Fukuoka,1 Satoshi Ohya,1 Katsuhisa Uchida,2 Hideyo Yamaguchi,2 and Shogo Kuwahara3

Biological Research Laboratories, Sankyo Co., Ltd., Shinagawa-ku, Tokyo 140-8710,1 Teikyo University Institute of Medical Mycology, Hachioji, Tokyo 192-0395,2 Toho University School of Medicine, Ohta-ku, Tokyo 143-8540, Japan3

Received 24 August 2001/ Returned for modification 20 September 2001/ Accepted 2 November 2001

The activity of CS-758 (R-120758), a new triazole antifungal agent, was evaluated and compared with those of fluconazole, itraconazole, and amphotericin B in vitro and with those of fluconazole and itraconazole in vivo. CS-758 exhibited potent in vitro activity against clinically important fungi. The activity of CS-758 against Candida spp. was superior to that of fluconazole and comparable or superior to those of itraconazole and amphotericin B. CS-758 retained potent activity against Candida albicans strains with low levels of susceptibility to fluconazole (fluconazole MIC, 4 to 32 µg/ml). Against Aspergillus spp. and Cryptococcus neoformans, the activity of CS-758 was at least fourfold superior to those of the other drugs tested. CS-758 also exhibited potent in vivo activity against murine systemic infections caused by C. albicans, C. neoformans, Aspergillus fumigatus, and Aspergillus flavus. The 50% effective doses against these infections were 0.41 to 5.0 mg/kg of body weight. These results suggest that CS-758 may be useful in the treatment of candidiasis, cryptococcosis, and aspergillosis.

* Corresponding author. Mailing address: Biological Research Laboratories, Sankyo Co., Ltd., 2-58 Hiromachi 1-chome, Shinagawa-ku, Tokyo, 140-8710, Japan. Phone: 81-3-3492-3131. Fax: 81-3-5436-8565. E-mail: ykamai{at}shina.sankyo.co.jp.

Antimicrobial Agents and Chemotherapy, February 2002, p. 367-370, Vol. 46, No. 2
0066-4804/01/$04.00+0     DOI: 10.1128/AAC.46.2.367-370.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Hedayati, M. T., Pasqualotto, A. C., Warn, P. A., Bowyer, P., Denning, D. W. (2007). Aspergillus flavus: human pathogen, allergen and mycotoxin producer. Microbiology 153: 1677-1692 [Abstract] [Full Text]  
  • Kamai, Y., Kubota, M., Fukuoka, T., Kamai, Y., Maeda, N., Hosokawa, T., Shibayama, T., Uchida, K., Yamaguchi, H., Kuwahara, S. (2003). Efficacy of CS-758, a Novel Triazole, against Experimental Fluconazole-Resistant Oropharyngeal Candidiasis in Mice. Antimicrob. Agents Chemother. 47: 601-606 [Abstract] [Full Text]  


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