Antimicrobial drug concentrations and sampling techniques in the equine lung

Area of Science:

• Pharmacology
• Veterinary Medicine
• Equine Health

Background:

• Antimicrobial drug distribution in the equine lung is critical for treating lower airway infections.
• Pulmonary pharmacokinetics in horses can differ significantly from plasma concentrations.
• Factors like drug class, species, and sampling methods influence drug distribution.

Purpose of the Study:

• To review the target sites of bacterial lower airway infections in horses.
• To describe antibiotic penetration into equine lung tissues.
• To provide an overview of equine pulmonary pharmacokinetic studies and sampling techniques.

Main Methods:

• Literature review of published equine pulmonary pharmacokinetic studies.
• Analysis of factors influencing antibiotic distribution in lung matrices.
• Evaluation of different sampling methods and their impact on data interpretation.

Main Results:

• Antibiotic distribution in the equine lung is complex and not predictable from plasma data.
• Drug class, animal species, and sampling techniques significantly affect pulmonary drug concentrations.
• Methodological challenges in sampling can impact the interpretation of pharmacokinetic data.

Conclusions:

• Optimizing antimicrobial dosage regimens for equine lower airway infections requires understanding pulmonary pharmacokinetics.
• Awareness of influencing factors and methodological limitations is essential for effective treatment.
• Further research into equine lung drug distribution is needed to refine treatment strategies.