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Sub-inhibitory concentrations of vancomycin prevent quinolone-resistance in a penicillin-resistant isolate of Streptococcus pneumoniae
Background
The continuous spread of penicillin-resistant pneumococci represents a permanent threat in the treatment of pneumococcal infections, especially when strains show additional resistance to quinolones. The main objective of this study was to determine a treatment modality impeding the emergence of quinolone resistance.
Results
Exposure of a penicillin-resistant pneumococcus to increasing concentrations of trovafloxacin or ciprofloxacin selected for mutants resistant to these drugs. In the presence of sub-inhibitory concentrations of vancomycin, development of trovafloxacin-resistance and high-level ciprofloxacin-resistance were prevented.
Conclusions
Considering the risk of quinolone-resistance in pneumococci, the observation might be of clinical importance.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "009:25" ] |
| contactPoint |
{ "fn": "NIH", "@type": "vcard:Contact", "hasEmail": "mailto:info@nih.gov" } |
| description | Background The continuous spread of penicillin-resistant pneumococci represents a permanent threat in the treatment of pneumococcal infections, especially when strains show additional resistance to quinolones. The main objective of this study was to determine a treatment modality impeding the emergence of quinolone resistance. Results Exposure of a penicillin-resistant pneumococcus to increasing concentrations of trovafloxacin or ciprofloxacin selected for mutants resistant to these drugs. In the presence of sub-inhibitory concentrations of vancomycin, development of trovafloxacin-resistance and high-level ciprofloxacin-resistance were prevented. Conclusions Considering the risk of quinolone-resistance in pneumococci, the observation might be of clinical importance. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Official Government Data Source", "mediaType": "text/html", "description": "Visit the original government dataset for complete information, documentation, and data access.", "downloadURL": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC34550/" } ] |
| identifier | https://healthdata.gov/api/views/stbt-7sfy |
| issued | 2025-07-14 |
| keyword |
[ "antibiotic-resistance", "nih", "quinolone-resistance", "streptococcus-pneumoniae", "vancomycin-effect" ] |
| landingPage | https://healthdata.gov/d/stbt-7sfy |
| modified | 2025-09-06 |
| programCode |
[ "009:048" ] |
| publisher |
{ "name": "National Institutes of Health", "@type": "org:Organization" } |
| theme |
[ "NIH" ] |
| title | Sub-inhibitory concentrations of vancomycin prevent quinolone-resistance in a penicillin-resistant isolate of Streptococcus pneumoniae |
