<i>In vitro</i> study of new combinations for local antibiotic therapy with calcium sulphate - Near constant release of ceftriaxone offers new treatment options.

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Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_8719F51B8911
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
<i>In vitro</i> study of new combinations for local antibiotic therapy with calcium sulphate - Near constant release of ceftriaxone offers new treatment options.
Journal
Journal of bone and joint infection
Author(s)
Wahl P., Rönn K., Bohner M., Decosterd L.A., Meier C., Schläppi M., Festa S., Gautier E.
ISSN
2206-3552 (Print)
ISSN-L
2206-3552
Publication state
Published
Issued date
2018
Peer-reviewed
Oui
Volume
3
Number
4
Pages
212-221
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
Local application of antibiotics provides high concentrations at the site of interest, with minimal systemic toxicity. Carrier materials might help manage dead space. Calcium sulphate (CaSO <sub>4</sub> ) has a dissolution time that only slightly exceeds the usually recommended duration of systemic antibiotic treatments. This <i>in vitro</i> study evaluates compatibility, release kinetics and antibacterial activity of new combinations of antibiotics with CaSO <sub>4</sub> as carrier material.
CaSO <sub>4</sub> pellets added with 8% w/w antibiotic powder were exposed once in phosphate-buffered saline (PBS) solution and once in bovine plasma, in an elution experiment run over 6 weeks at 37 °C. Antibiotic elution was examined at various time points. Concentration was measured by liquid chromatography with tandem mass spectrometry. Antimicrobial activity was checked with an agar diffusion test.
Piperacillin-tazobactam, ceftazidime, cefepime, and meropenem showed fast reduction of concentration and activity. Flucloxacillin and cefuroxime remained present in relevant concentrations for 4 weeks. Ciprofloxacin, levofloxacin and clindamycin lasted for 6 weeks, but also at cell toxic concentrations. Ceftriaxone showed a near-constant release with only a small reduction of concentration from 130 to 75 mg/l. Elution profiles from PBS and plasma were comparable.
CaSO <sub>4</sub> provides new possibilities in the local treatment of bone and joint infections. Ceftriaxone appears to be of particular interest in combination with CaSO <sub>4</sub> . Release persists at clinically promising concentrations, and appears to have a depot-like slow release from CaSO <sub>4</sub> , with only a small reduction in activity and concentration over 6 weeks. To the best of our knowledge, such a particular persistent release never was described before, for any antibiotic in combination with a carrier material for local application.
Keywords
CaSO4, Calcium sulphate, antibiotics, ceftriaxone, in vitro elution
Pubmed
Open Access
Yes
Create date
20/11/2018 8:55
Last modification date
20/08/2019 14:46
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