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Effect of cefazolin and vancomycin on osteoblasts in vitro
M L Edin1, T Miclau, G E Lester
1University of North Carolina School of Medicine, Division of Orthopaedic Surgery, Chapel Hill, USA.
Clinical Orthopaedics and Related Research
|December 1, 1996
Summary
Vancomycin and cefazolin antibiotics were tested on osteoblast cells. Vancomycin showed less toxicity at higher concentrations, suggesting it may be a better choice for local antibiotic administration.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Pharmacology
Background:
- Osteomyelitis treatment often involves antibiotics.
- Local antibiotic delivery aims to achieve high concentrations at the infection site.
- Understanding antibiotic effects on bone cells is crucial for treatment selection.
Purpose of the Study:
- To evaluate the in vitro effects of cefazolin and vancomycin on osteoblast-like cells.
- To determine the concentration-dependent toxicity of these antibiotics on cell replication and viability.
Main Methods:
- MG-63 human osteosarcoma cells were cultured.
- Cells were exposed to varying concentrations (0-10,000 microg/ml) of cefazolin and vancomycin.
- Cell number and 3H-thymidine incorporation were measured at 0, 24, and 72 hours.
Main Results:
- Vancomycin up to 1000 microg/ml had minimal effect on osteoblast replication; 10,000 microg/ml was cytotoxic.
- Cefazolin up to 100 microg/ml had minimal effect; 200 microg/ml significantly reduced replication, and 10,000 microg/ml caused cell death.
- Cefazolin demonstrated greater toxicity to osteoblasts than vancomycin at higher concentrations.
Conclusions:
- Vancomycin is less toxic to osteoblasts than cefazolin at higher concentrations.
- Vancomycin may be a preferable antibiotic for local administration in treating bone infections sensitive to these agents.