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Probenecid effect on cefuroxime pharmacokinetics in calves
1Ministry of Agriculture, Kimron Veterinary Institute, Beit Dagan, Israel.
Journal of Veterinary Pharmacology and Therapeutics
|March 1, 1989
Summary
This study investigated cefuroxime pharmacokinetics in unweaned calves, finding that probenecid did not significantly alter its elimination half-life. These findings are crucial for optimizing antibiotic dosing in young cattle.
Area of Science:
- Veterinary Pharmacology
- Pharmacokinetics
- Antibiotic Research
Background:
- Cefuroxime is a cephalosporin antibiotic used in veterinary medicine.
- Understanding cefuroxime pharmacokinetics in young animals is essential for effective treatment protocols.
- Probenecid is often used to enhance antibiotic efficacy by inhibiting excretion.
Purpose of the Study:
- To characterize the pharmacokinetic profile of cefuroxime in unweaned calves.
- To evaluate the impact of probenecid co-administration on cefuroxime pharmacokinetics.
- To determine optimal dosing strategies for cefuroxime in this animal model.
Main Methods:
- Administered cefuroxime intravenously and intramuscularly to unweaned calves at various doses.
- Co-administered cefuroxime with probenecid at different concentrations.
- Analyzed serum concentration-time data using statistical moment theory (SMT).
Main Results:
- Cefuroxime exhibited an elimination half-life of approximately 65-69 minutes.
- Probenecid did not significantly affect the elimination half-life of cefuroxime.
- Mean residence time varied with administration route and dosage, with probenecid slightly increasing MRT.
Conclusions:
- Cefuroxime demonstrates predictable pharmacokinetics in unweaned calves.
- Probenecid does not appear to significantly alter cefuroxime's elimination in this model.
- The pharmacokinetic data can inform veterinary therapeutic strategies for cefuroxime in calves.