Studying How Ofloxacin Diffuses in Heart Infections
Author Information
Author(s): Eric Batard, Frédéric Jamme, Sandrine Villette, Cédric Jacqueline, Marie-France de la Cochetière, Jocelyne Caillon, Matthieu Réfrégiers
Primary Institution: Université de Nantes
Hypothesis
The objective of this work was to assess the diffusion of ofloxacin in experimental endocarditis vegetation bacterial masses using synchrotron-radiation UV fluorescence microspectroscopy.
Conclusion
Ofloxacin diffuses into vegetation bacterial masses, but it accumulates in their immediate neighborhood.
Supporting Evidence
- Ofloxacin-treated rabbit sera showed higher fluorescence intensities than control sera.
- Ofloxacin concentrations in serum and vegetation were significantly higher in treated rabbits.
- Fluorescence microscopy detected ofloxacin in the endocarditis vegetation despite the autofluorescence of the vegetation itself.
Takeaway
This study looked at how a medicine called ofloxacin spreads in infected heart tissue. It found that the medicine gets into the tissue but mostly stays close to the outside.
Methodology
Streptococcal endocarditis was induced in 5 rabbits, with 3 receiving ofloxacin and 2 serving as controls; fluorescence microscopy was used to assess antibiotic diffusion.
Limitations
The results may not directly apply to human patients as the study used a single high dose of ofloxacin in rabbits.
Participant Demographics
New Zealand white rabbits, weight: 2.0 to 2.7 kg.
Statistical Information
P-Value
0.004
Confidence Interval
95%
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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