Pharmacokinetics of oral ethanamizuril solution in chickens

CHENG Pei-pei; ZHENG Wen-li; XUE Fei-qun; HU Xing-xing; WANG Chun-mei; LIU Ying-chun; WANG Mi; ZHANG Ke-yu; FEI Chen-zhong; ZHANG Li-fang; WANG Xiao-yang

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Pharmacokinetics of oral ethanamizuril solution in chickens

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Ethanamizuril (EZL) is a novel triazine anticoccidial compound that has high anticoccidial activity in chickens. In order to treat coccidiosis rationally in poultry, a detection method was developed for ethanamizuril in broiler plasma, and then the pharmacokinetics studies were performed in broilers after oral administration of different dose levels. Ethanamizuril was administered as single oral doses at low (0.67 mg kg–1BW), medium (1.33 mg kg–1BW) and high (6.67 mg kg–1BW) levels in which the medium dose was that recommended in clinics. Plasma concentrations of ethanamizuril were determined using ultra-high performance liquid chromatography and the data were analyzed with a non-compartmental model. Peak plasma concentrations of ethanamizuril were (2.16±0.57), (3.91±0.71), and (23.71±5.02) mg L–1at (5.17±1.80), (4.60±2.12), and (4.60±2.12) h, respectively. The terminal elimination half-lives (t1/2λz) for ethanamizuril were (10.84±2.59), (10.66±2.47), and (13.34±3.10) h after oral administration at low, medium and high doses, respectively. The areas under the concentration-time curve (AUC0–t) were (37.68±6.87), (73.19±9.18), and (485.76±125.10) mg L–1h with mean residence times (MRT0–t) of (14.79±3.03), (15.57±3.69), and (20.22±4.01) h at the 3 dosages, respectively. Ethanamizuril was absorbed rapidly and eliminated slowly. A comparison across the dose range indicated that the time to reach peak plasma concentration (Tmax) values were similar while peak plasma concentration (Cmax) and AUC0–twere positively correlated with increasing dosages. This study of the pharmacokinetics of an ethanamizuril solution in chickens provides a theoretical basis for the rational use in the clinic.

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《农业科学学报（英文版）》 |2018年第12期|2783-2789|共7页
作者
CHENG Pei-pei; ZHENG Wen-li; XUE Fei-qun; HU Xing-xing; WANG Chun-mei; LIU Ying-chun; WANG Mi; ZHANG Ke-yu; FEI Chen-zhong; ZHANG Li-fang; WANG Xiao-yang;
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Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

Key Laboratory of Veterinary Chemical Drugs and Pharmaceutics, Ministry of Agriculture and Rural Affairs/Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, P.R.China;

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Pharmacokinetics of oral ethanamizuril solution in chickens

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