摘要
研究不同给药条件下,氟苯尼考在中华鳖体内的残留及药代动力学特征。健康中华鳖160只,随机分为2组,按30mg.kg-1剂量分别单次肌注或口服氟苯尼考,高效液相色谱法测定中华鳖血浆和肌肉药物残留浓度,利用3P87药代动力学软件分析数据。肌注和口服时均符合一室开放模型;肌注给药的动力学方程C=16.72(e-0.15t-e0.52t),主要药代动力学参数:AUC=76.45μg.mL-1.h-1,吸收半衰期(T1/2Ka)=1.31h,半衰期(T1/2Ke)=4.48h,最高血药浓度Cmax=7.09μg.L-1;口服给药的动力学方程为C=39.99(e-0.19t-e0.4t),主要药代动力学参数:AUC=109.42μg.mL-1.h-1,吸收半衰期(T1/2Ka)=1.73h,半衰期(T1/2Ke)=3.63h,最高血药浓度Cmax=10.64μg.L-1。实验结果表明,氟苯尼考口服情况下,在中华鳖体内吸收快,血药浓度高,维持时间长,生物利用度高;药物在肌肉中消除缓慢。
To study the residues and pharmacokinetics of florphenicol in Trionyx sinensis with different treatments, one hundred and sixty healthy T. sinensis were selected and followed by a single dose of florphenicol （30 mg·kg^- 1 ） with intramascular injection and oral administration respectively. Serial serum samples were obtained and assayed by reversed-phase HPLC, and the corresponding pharmacokinetic parameters were calculated with 3p87. A one-compartment open model best fits the data. The major pharmacokinetic parameters were as follows： AUC= 76.45mg·L^-1·h^-1, T1/2ka = 1.31 h,T1/2ke =4.48 h, and Cmax = 7.09 mg·L^-1 in intramascular injection group; while AUC = 109.42 mg·L^-1·h^-1, T1/2k, = 1.73 h, T1/2ke = 3.63 h, and Cmax = 10.64 mg· L^- 1 in oral administration one. It suggested that the assimilation of florphenicol was faster, the level of risidue concentration was higher, the maintain time was longer, and the bioavailability was higher in oral administration group as compared to inwamascular injection. Florphenicol residue eliminated slowly in musculature.
出处
《水产学报》
CAS
CSCD
北大核心
2006年第4期515-519,共5页
Journal of Fisheries of China
基金
杭州市财政专项资助项目(2003164)
