Document Detail

Metronidazole in treatment against Haemophilus vaginalis (Corynebacterium vaginale).
MedLine Citation:
PMID:  6968175     Owner:  NLM     Status:  MEDLINE    
The rate of bactericidal activity and inactivation of metronidazole was studied in time-kill curves with Haemophilus vaginalis (Corynebacterium vaginale). The minimum inhibitory concentrations of metronidazole for the eight strains tested ranged from 4 to 16 micrograms/ml. At a concentration of 20 micrograms/ml, metronidazole demonstrated a slow cidal effect against exponential-phase organisms, requiring 24 to 48 h for completion. Inactivation of metronidazole during the time-kill curve was quite variable and averaged 28% of the starting concentration after 48 h. Against stationary-phase organisms (inoculum, 10(10) to 10(11) colony-forming units per ml), a slow cidal effect was also seen, with an average inactivation of metronidazole of 38% after 48 h. At a subinhibitory concentration of 5 micrograms/ml, metronidazole was inactivated to the greatest degree (57% after 48 h). Therefore, in contrast to earlier studies in which metronidazole was rapidly and consistently cidal within 4 h against obligate anaerobes and was almost completely inactivated by 8 h, the bactericidal effect of metronidazole againsts H. vaginalis in this study was much slower and was associated with a variable and slower rate of inactivation.
E D Ralph; Y E Amatnieks
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Antimicrobial agents and chemotherapy     Volume:  18     ISSN:  0066-4804     ISO Abbreviation:  Antimicrob. Agents Chemother.     Publication Date:  1980 Jul 
Date Detail:
Created Date:  1980-11-20     Completed Date:  1980-11-20     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0315061     Medline TA:  Antimicrob Agents Chemother     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  101-4     Citation Subset:  IM    
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MeSH Terms
Gardnerella vaginalis / drug effects*
Haemophilus / drug effects*
Haemophilus Infections / drug therapy
Metronidazole / metabolism,  pharmacology*,  therapeutic use
Microbial Sensitivity Tests
Time Factors
Reg. No./Substance:

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