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Meloxicam pharmacokinetics using nonlinear mixed-effects modeling in ferrets after single subcutaneous administration
S K Chinnadurai1, K M Messenger, M G Papich
1Environmental Medicine Consortium, North Carolina State University College of Veterinary Medicine, Raleigh, NC, USA; Department of Clinical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, USA; Department of Molecular Biomedical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, USA.
This study examined meloxicam pharmacokinetics in ferrets, finding significant sex differences in drug absorption and elimination. These pharmacokinetic variations between male and female ferrets are crucial for effective meloxicam dosing.
Area of Science:
- Veterinary Pharmacology
- Comparative Pharmacokinetics
Background:
- Meloxicam is a widely used nonsteroidal anti-inflammatory drug (NSAID) in veterinary medicine.
- Understanding its pharmacokinetic profile in diverse species like ferrets is essential for safe and effective therapeutic use.
Purpose of the Study:
- To investigate the pharmacokinetic properties of meloxicam following a single subcutaneous dose in ferrets.
- To identify potential sex-based differences in meloxicam pharmacokinetics in this species.
Main Methods:
- A single subcutaneous dose of meloxicam (0.2 mg/kg) was administered to 18 ferrets (9 male, 9 female).
- Plasma meloxicam concentrations were quantified using high-performance liquid chromatography (HPLC).
- Pharmacokinetic variables were analyzed using nonlinear mixed-effects modeling.
Main Results:
- Significant differences in maximum plasma concentration, volume of distribution, and elimination half-life were observed between male and female ferrets.
- Females exhibited lower maximum plasma concentrations and shorter elimination half-lives compared to males.
- Systemic clearance was not significantly affected by gender.
Conclusions:
- Sex is a significant factor influencing meloxicam pharmacokinetics in ferrets.
- Dosage adjustments may be necessary based on sex to ensure optimal therapeutic outcomes and minimize adverse effects.
- Further studies could explore the clinical implications of these sex differences on analgesic efficacy.
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