数字农科院2.0

Population Pharmacokinetics of Florfenicol in Crayfish (Procambarus clarkii) Based on the Sparse Sampling Method and a Nonlinear Mixed-Effect Model

文献类型： 外文期刊

作者： Xu, Ning;Tian, Juan;Gong, Binbin;Ding, Yongzhen;Ai, Xiaohui

作者机构：

关键词： crayfish;florfenicol;gender;population pharmacokinetics

期刊名称： JOURNAL OF VETERINARY PHARMACOLOGY AND THERAPEUTICS

ISSN： 0140-7783

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： The present study was conducted to establish population pharmacokinetics (PPK) of florfenicol (FLO) in crayfish (Procambarus clarkii) after a single oral administration at a dose of 15 mg/kg at 25 degrees C based on a nonlinear mixed effect model. The sparse sampling method was used to collect the blood samples. Thirty-two crayfish were divided into four groups, and one group included four male crayfish and four female crayfish. One animal undertook three sampling time points. All samples were quantified using high-performance liquid chromatography with an ultraviolet detector. The initial pharmacokinetic (PK) parameters were estimated by reference search and the calculation of a naive pooled approach. The additive error model was selected using the tool of maximum likelihood model comparison. The covariate model included the two variations of body weight and sex. Through the addition and subtraction of parameters, weight and gender had no significant effect on the alterations of PK parameters. Afterward, the random effects were introduced in the model, which notably reduced the coefficient of variation. Finally, the calculated values of the absorption rate constant, apparent distribution volume, and total systemic clearance were estimated to be 1.93/h, 11.16 L/kg, and 2.35 L/h/kg, respectively. The secondary parameters of the elimination rate constant, elimination half-life, and area under the concentration-time curve were calculated to be 0.20/h, 3.47 h, and 6.38 h.mg/L, respectively. This study supported a concise method for conducting PK studies in crustacean animals that facilitated the development of PK methodology in aquaculture.

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