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Pharmacokinetics and Tissue Residue Profiles of Enrofloxacin in Crucian Carp (Carassius auratus gibelio) Following Single and Multiple Oral Administration

文献类型： 外文期刊

作者： Shan, Qi 1 ; Huang, Heqing 1 ; Zheng, Guangming 1 ; Yin, Yi 1 ; Zhu, Xinping 2 ; Ma, Lisha 1 ; Zhou, Hao 1 ; Xie, Wenping 1 ; Li, Lichun 1 ; Liu, Shugui 1 ; Wang, Jingxin 3 ;

作者机构： 1.Chinese Academic of Fishery Science, Pearl River Fisheries Res Inst, Minist Agr Key Lab Recreat Fisheries Res, Key Lab Aquat Anim ImmuneTechnol Guangdong Prov, Guangzhou, Peoples R China

2.Chinese Acad Fishery Sci, Minist Agr, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat &, Guangzhou, Peoples R China

3.Guangdong Pharmaceut Univ, Guangdong Prov Engn Res Ctr Publ Hlth Detect & Ass, Sch Publ Hlth, Guangzhou, Peoples R China

关键词： enrofloxacin; pharmacokinetics; crucian carp; ciprofloxacin; tissue distribution; withdrawal time

期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.471； 五年影响因子：3.821 ）

ISSN：

年卷期： 2022 年 9 卷

页码：

收录情况： SCI

摘要： The pharmacokinetics, tissue distribution, and elimination of enrofloxacin (ENR) and its metabolite ciprofloxacin (CIP) were investigated to the crucian carp (Carassius auratus gibelio) after single (20 mg/kg b. w.) and multiple oral administration (20 mg/kg b.w. one time daily for 5 days) at 28 degrees C. The concentrations of ENR and CIP in the plasma and tested tissues (muscle/skin, liver, and kidney) were detected simultaneously by high-performance liquid chromatography (HPLC), and the pharmacokinetic data were analyzed with a non-compartmental model using WinNonLin 6.1 PK software (Pharsight Corporation, Mountain View, CA, USA). The pharmacokinetic characteristics of ENR in crucian carp exhibited slow absorption, wide tissue distribution, and long elimination half-life. In the single-dose group, the peak concentrations (Cmax) of ENR in the plasma, muscle/skin, liver, and kidney were 8.93 mu g/mL, 13.9 mu g/g, 31.2 mu g/g, and 27.3 mu g/g, respectively, observed at 3 h, 6 h, 1 h, and 3 h after dosing. The elimination half-lives (T-1/2 lambda z) of ENR in plasma, muscle/skin, liver, and kidney were calculated to be 67.4, 82.8, 94.4, and 114 h, respectively. In the multiple-dose group, the C-max of ENR in the plasma, muscle/skin, liver, and kidney were 18.4 mu g/mL, 26.8 mu g/g, 82.8 mu g/g, and 74.5 mu g/g, respectively, achieved at 3 h, 6 h, 1 h, and 1 h after the last dose. The T-1/2 lambda z of ENR in the plasma, muscle/skin, liver, and kidney were calculated to be 76.4 h, 91.5 h, 114 h, and 148 h, respectively. During the multiple-dose administration, significant accumulations of ENR and CIP were observed in the plasma and tissues of crucian carp, possibly due to their long elimination half-lives. In both dose groups, the AUC(0-infinity) for both ENR and CIP followed the order of liver > kidney > muscle/skin > plasma. The finding suggested that the liver may play an important role in the metabolism of ENR. According to the calculated PK/PD indices of C-max/minimum inhibitory concentrations (MIC) and AUC(24h)/MIC, the multiple-dose regimen would be highly effective against pathogenic bacteria with a MIC value of <= 1.84 mu g/ml. Depletion studies indicated that a withdrawal period of at least 29 or 32 days was necessary to guarantee food security after single or multiple oral gavage administration at 28 degrees C.

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