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In vitro and in vivo antibacterial activities of garenoxacin against group G Streptococcus dysgalactiae subsp. equisimilis.
MedLine Citation:
PMID:  21726983     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this study, garenoxacin showed potent in vitro activity against clinical isolates of group G Streptococcus dysgalactiae subsp. equisimilis [minimum inhibitory concentration for 90% of the organisms (MIC(90))=0.125μg/mL] and was superior to levofloxacin (MIC(90)=1μg/mL) and moxifloxacin (MIC(90)=0.25μg/mL). In experimental pneumonia caused by group G S. dysgalactiae subsp. equisimilis in mice, the effective dose for 50% survival (ED(50)) of garenoxacin following single oral administration was 1.87mg/kg, >10.7-fold and 4.6-fold less than the ED(50) values of levofloxacin (>20mg/kg) and moxifloxacin (8.54mg/kg), respectively. The area under the free serum concentration-time curve from 0-24h (fAUC(0-24))/MIC ratio of garenoxacin in serum following oral administration of 20mg/kg was 73.2, which was 8.7-11.4-fold and 1.4-fold greater than that of levofloxacin (6.44-8.46) and moxifloxacin (51.4), respectively. These results suggest that garenoxacin has potential for the treatment of infectious diseases caused by S. dysgalactiae subsp. equisimilis.
Authors:
Masahiro Takahata; Yoko Sugiura; Yuko Shiokawa; Naoko Futakuchi; Yoshiko Fukuda; Nobuhiko Nomura; Junichi Mitsuyama
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-2
Journal Detail:
Title:  International journal of antimicrobial agents     Volume:  -     ISSN:  1872-7913     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9111860     Medline TA:  Int J Antimicrob Agents     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved.
Affiliation:
Research Laboratories, Toyama Chemical Co. Ltd., 4-1, Shimookui 2-chome, Toyama 930-8508, Japan.
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