Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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Pharmacokinetics of amoxicillin after intramuscular injection at different temperatures to cultured olive flounder, Paralichthys olivaceus

Amoxicillin의 근육투여에 따른 수온별 넙치 체내 약동학적 특성

  • Kim, Ji-Soo (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Lee, Ji-Hoon (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Lee, Soo-Jin (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Park, Kwan-Ha (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University)
  • 김지수 (군산대학교 수산생명의학과) ;
  • 이지훈 (군산대학교 수산생명의학과) ;
  • 이수진 (군산대학교 수산생명의학과) ;
  • 박관하 (군산대학교 수산생명의학과)
  • Received : 2014.12.08
  • Accepted : 2015.04.17
  • Published : 2015.04.30
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Abstract

The pharmacokinetic properties and residue levels of amoxicillin (AMOX) were studied after intramuscular injection to cultured olive flounders ($100{\pm}50g$), Paralichthys olivaceus. For pharmacokinetic studies, AMOX of 20 to 80 mg/kg body weight was administered at $17{\pm}2^{\circ}C$ or $22{\pm}2^{\circ}C$ and AMOX concentrations were determined in plasma, the liver, and the kidney by HPLC-UVD. Plasma samples were assessed at 0.25, 0.5, 1, 3, 6, 12, 24, 48, 72, 96, 168 hours post-dose, whereas liver and kidney concentrations were measured at 0.25 to 48 hours post-dose. The kinetic profiles of AMOX were analyzed by fitting to a 2-compartmental model with PKSolver program. The following parameters were obtained for a single dosage of 20, 40 and 80 mg/kg of body weight at $22^{\circ}C$ and 20 and 40 mg/kg of body weight at $17^{\circ}C$ in plasma, liver and kidney, respectively: $C_{max}$ (the peak concentration)= $27.23-257.36{\mu}g/m{\ell}$, $5.49-41.65{\mu}g/g$, $16.75-129.31{\mu}g/g$; $t_{max}$ (the time for peak concentration)= 0.05-0.91, 1.36-3.28, 1.95-4.49 h. For residue studies, AMOX of 40 and 400mg/kg was administered, and muscle samples were taken at 2, 5, 7, 14 and 21 days post-dose. The residueof AMOX in the muscle were found under the MRLs (maximum residue levels) within 7 days for the two doses.

아목시실린(AMOX)의 수온에 따른 약동학적 특성과 잔류량을 알아보기 위해 넙치(평균 100 g)를 $(17{\pm}2)^{\circ}C$ 및 $(22{\pm}2)^{\circ}C$에 수용하여 1회 근육투여한 후 시간에 따른 혈장, 간, 신장의 잔류농도를 HPLC-UVD로 분석하였다. 이 측정결과를 바탕으로 2-compartmental model로 PKSolver program을 이용하여 AMOX의 반감기, AUC 등의 pharmacokinetic parameter를 조사하였다. 혈장, 간, 신장의 최고농도 및 도달시간의 범위가 각각 $27.23-257.36{\mu}g/m{\ell}$ (0.05-0.91 h), $5.49-41.65{\mu}g/g$ (1.36-3.28 h), $16.75-129.31{\mu}g/g$ (1.95-4.49 h)으로 나타났다. 수온에 따른 잔류기간을 시험하기 위해 어체중 kg 당 40 및 400 mg을 투여한 후 LC-MS/MS로 분석하였다. 40 mg/kg은 5일 후, 400 mg/kg은 7일 후에 각각 최대잔류허용량인 0.05 mg/kg 이하로 검출되었다.

Keywords

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