Pharmacokinetics of pidotimod in broiler chickens by UHPLC–MS/MS after oral and intravenous administration

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EarlyView Article

  • Published: Dec 5, 2017
  • Author: Ruili Zhang, Mei Qiu, Li Zhao, Liangliang Cui, Chunyuan Wang, Jiajia Zhu, Zhihui Hao
  • Journal: Biomedical Chromatography


Pidotimod is widely used in children as an immune promoter but it has not been fully evaluated in animals. The pharmacokinetics of pidotimod and its oral bioavailability have not been described in broiler chickens. We developed a simple and sensitive UHPLC–MS/MS assay for rapid determination of pidotimod levels in chicken blood. Recoveries were nearly 100% and the coefficients of accuracy and precision were minimal. Healthy broiler chickens were given 10 mg/kg pidotimod either orally or intravenously. The oral pidotimod was rapidly absorbed (time to reach maximum concentration, 1.25 h) and rapidly eliminated (the mean residence time was 3.2 h). A noncompartmental analysis of the intravenous route indicated a mean plasma clearance of 2.2 L (h kg)−1 with an estimated mean volume of distribution at steady state of 12.69 L/kg. The bioavailability of pidotimod after oral dosing was 27%.

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