ArticleVeterinary research communications2026
Development and validation of UPLC-MS/MS method for pharmacokinetics and tissue distribution of Tylvalosin and its bioactive metabolites in swine.
Article in Veterinary research communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundTylvalosin (acetylisovaleryltylosin), a breakthrough semi-synthetic derivative of tylosin engineered to address pharmacokinetic limitations and bacterial resistance, exhibits dual therapeutic efficacy against porcine reproductive and PRRSV-associated pneumonia and mycoplasma infections in swine. Limited research has yet to investigate pharmacokinetic profiles of tylvalosin and its metabolites. This study, therefore, aims to pioneer a robust UPLC-MS/MS method for simultaneous quantification of tylvalosin and its key bioactive metabolites, desmycosin 3-acetate and tylosin 3-acetate, in swine plasma and tissues, and to investigate the pharmacokinetic properties of different tylvalosin formulations.
resultsA robust UPLC-MS/MS method was developed and validated, showing excellent performance with good linearity, low deviation, high accuracy, minimal carry-over and matrix effects, as well as favorable stability under various conditions. Pharmacokinetic analysis following intravenous (i.v.) or intragastric administration in swine revealed that formulation I outperformed other formulations, exhibiting the highest bioavailability (F, 57.32%), the longest elimination half-life (t
conclusionsThe findings confirm the optimized therapeutic potential of tylvalosin, particularly formulation I, supported by its favorable pharmacokinetic profile and tissue distribution. This study establishes a new standard for veterinary PK-PD research and provides a PK evidence-based formulation optimization approaches to enhance treatment efficacy.
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