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Pharmacokinetics of amoxicillin trihydrate in cultured eel Anguilla japonica by single oral and intravenous administrations  

Jeon, Eun-Ji (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Seo, Jeong-Soo (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Kim, Jin-Do (Inland Aquaculture Research Center, NFRDI)
Jung, Sung-Hee (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Kim, Myoung-Sug (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Hwang, Jee-Youn (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Park, Myoung-Ae (Pathology Division, National Fisheries Research & Development Institute (NFRDI))
Jee, Bo-Young (Aquatic Animal Disease Control Center, NFRDI)
Kim, Jin-Woo (Aquatic Animal Disease Control Center, NFRDI)
Kim, Yi-Cheong (Fisheries Resources Enhancement Center, NFRDI)
Publication Information
Journal of fish pathology / v.23, no.3, 2010 , pp. 357-367 More about this Journal
Abstract
The pharmacokinetic properties of amoxicillin trihydrate (Amox) were studied after single oral administration and single intravenous injection to cultured eel, Anguilla japonica, respectively (average $220{\pm}10\;g$, $28{\pm}1^{\circ}C$). Plasma samples were taken at 3, 5, 10, 15, 24, 30, 48, 96 and 144 h post-dose. The kinetic profile of absorption, distribution and elimination of Amox in plasma were analyzed fitting to a two-compartment model by WinNonlin program. In oral dosage of 40 and 80 mg/kg body weight, the peak plasma concentrations of Amox, which attained at 3~12 h post-dose, were 3.4 and $3.3\;{\mu}g/ml$, respectively. In intravenous injection with 1 mg/kg, the peak plasma concentrations of Amox, which attained at 9 h post-dose, was $7.2\;{\mu}g/ml$. The following parmeters were calculated for a single oral dosage of 40 and 80 mg/kg body weight, respectively: AUC (the area under the concentration-time curve)= 464 and $667\;{\mu}g{\cdot}h/ml$; $T_{max}$ (time for maximum concentration)= 2.1 and 3.6 h; $C_{max}$ (maximum concentration)= 3.04 and $3.4\;{\mu}g/ml$. Following intravenous injection at 1 mg/kg, this parameters were AUC= $748\;{\mu}g{\cdot}h/ml$; $C_{max}=4.2\;{\mu}g/ml$. The apparent oral bioavailability at 40 and 80 mg/kg were 1.6 and 1.1%, respectively. Despite using the trihydrate form of amoxicillin, the oral bioavailability was low in eel.
Keywords
Pharmacokinetics; Amoxicillin trihydrate; Eel; Anguilla japonica;
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Times Cited By KSCI : 2  (Citation Analysis)
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