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[Transferability of cefozopran to cerebrospinal fluid in rabbits with meningitis caused by Staphylococcus aureus]
Abstract:
The transferability of cefozopran (CZOP) to cerebrospinal fluid (CSF) was studied employing rabbits with experimental meningitis caused by Staphylococcus aureus. The mean plasma concentration was 293 +/- 17.6 micrograms/ml at 15 minutes after intravenous administration of CZOP at a dose level of 100 mg/kg. The mean concentration in CSF reached its maximum, 16.5 +/- 2.74 micrograms/ml at 60 minutes after administration. Pharmacokinetic parameters calculated from these values were as follows: Cmax (CSF/plasma) 5.72%, AUC (CSF/plasma) 6.61% between 15 and 60 minutes, 9.38% between 15 and 120 minutes and 11.2% between 15 and 180 minutes, T 1/2 for CZOP in CSF: 138 minutes, T 1/2 (CSF/plasma): 2.81. In comparison to those of beta-lactams that were obtained in the same way, the transferability of CZOP to CSF was moderate but concentration in CSF was high, hence, in consideration of the antimicrobial potency against the main pathogens of meningitis, it appears worthwhile of running clinical trials for CZOP.
Insights
Cefozopran (CZOP) shows moderate transferability to cerebrospinal fluid (CSF) in rabbits with Staphylococcus aureus meningitis. Despite this, CZOP achieved high CSF concentrations, suggesting potential for clinical trials.
Area of Science:
- Pharmacology
- Infectious Diseases
- Neuroscience
Context:
- Bacterial meningitis remains a significant global health challenge, necessitating effective antibiotic treatments.
- Cerebrospinal fluid (CSF) penetration is crucial for antibiotics targeting central nervous system infections.
- Staphylococcus aureus is a common causative agent of bacterial meningitis.
Purpose:
- To evaluate the pharmacokinetic properties and transferability of cefozopran (CZOP) into the cerebrospinal fluid (CSF) in a rabbit model of Staphylococcus aureus meningitis.
- To compare the CSF penetration of CZOP with other beta-lactam antibiotics.
Summary:
- Cefozopran (CZOP) was administered intravenously to rabbits with experimentally induced Staphylococcus aureus meningitis.
- Mean plasma concentration of CZOP reached 293 µg/ml at 15 minutes, while peak CSF concentration was 16.5 µg/ml at 60 minutes.
- Key pharmacokinetic parameters including Cmax (CSF/plasma) of 5.72% and a CSF half-life (T 1/2) of 138 minutes were determined.
Impact:
- Cefozopran demonstrated moderate transferability but achieved high concentrations in the CSF.
- These findings suggest that CZOP warrants further investigation in clinical trials for treating bacterial meningitis.
- The study provides valuable pharmacokinetic data for cefozopran in the context of CNS infections.