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Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection
Published on: October 25, 2013
Interaction between ciprofloxacin and vancomycin against staphylococci
1Microbiology Department, Bristol Royal Infirmary, England.
The Journal of Antimicrobial Chemotherapy
|August 1, 1987
Summary
This study found that combining ciprofloxacin and vancomycin showed early antagonism against Staphylococcus epidermidis and Staphylococcus aureus. This combination offers no clear advantage over vancomycin alone for treating staphylococcal infections.
Area of Science:
- Microbiology
- Pharmacology
- Infectious Diseases
Background:
- Staphylococcus epidermidis and Staphylococcus aureus are common causes of serious infections, including infective endocarditis.
- Combination antibiotic therapy is often used to treat severe staphylococcal infections, but interactions can be complex.
Purpose of the Study:
- To investigate the in vitro interaction between ciprofloxacin and vancomycin against clinical isolates of Staphylococcus epidermidis and Staphylococcus aureus.
- To determine if this antibiotic combination offers synergistic or antagonistic effects.
Main Methods:
- Bacterial isolates: Nine strains of Staphylococcus epidermidis from infective endocarditis and three strains of Staphylococcus aureus.
- In vitro susceptibility testing: Time-kill assays were performed to evaluate the interaction between ciprofloxacin and vancomycin.
Main Results:
- Killing curves demonstrated antagonistic effects between ciprofloxacin and vancomycin in the early stages of exposure.
- No synergistic activity was observed between the two antibiotics.
- The combination did not show improved efficacy compared to vancomycin monotherapy.
Conclusions:
- The combination of ciprofloxacin and vancomycin exhibits early antagonism against Staphylococcus epidermidis and Staphylococcus aureus.
- The clinical significance of this early antagonism is currently uncertain.
- This combination does not appear to provide therapeutic advantages over vancomycin alone for treating staphylococcal infections.
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