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Evaluation of ceftiofur sodium as a ...

Somjetlertcharoen, Amornchai.

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Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella)./
Author:	Somjetlertcharoen, Amornchai.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2001,
Description:	162 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4234.
Contained By:	Dissertation Abstracts International64-09B.
Subject:	Veterinary science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3106793
ISBN:	9780496543571

Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella).
Somjetlertcharoen, Amornchai.

Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella). - Ann Arbor : ProQuest Dissertations & Theses, 2001 - 162 p.

Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4234.

Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 2001.

Ceftiofur sodium, a third generation cephalosporin, was studied to determine the potential of this drug as an alternative bacterial therapeutic agent for the aquaculture and ornamental fish industry. Grass carp, Ctenopharyngodon idella have been selected as the fish model for this study since they are a good representative for both foodfish and ornamental fish and are one of the major species grown worldwide.

ISBN: 9780496543571Subjects--Topical Terms:

3172798
Veterinary science.

Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella).
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020 $a 9780496543571
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100 1 $a Somjetlertcharoen, Amornchai. $3 3278602
245 1 0 $a Evaluation of ceftiofur sodium as a chemotherapeutic agent in grass carp (Ctenopharyngodon idella).
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2001
300 $a 162 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4234.
500 $a Chair: Stephen A. Smith.
502 $a Thesis (Ph.D.)--Virginia Polytechnic Institute and State University, 2001.
520 $a Ceftiofur sodium, a third generation cephalosporin, was studied to determine the potential of this drug as an alternative bacterial therapeutic agent for the aquaculture and ornamental fish industry. Grass carp, Ctenopharyngodon idella have been selected as the fish model for this study since they are a good representative for both foodfish and ornamental fish and are one of the major species grown worldwide.
520 $a Pharmacokinetics of ceftiofur sodium after various routes of administration, histopathologic observations to detect possible toxic effects on the tissues involved in its metabolism and excretion, and the effects on the non-specific immune response were investigated in grass carp.
520 $a For the pharmacokinetic studies, ceftiofur sodium was administered a single time to grass carp by four different routes: intracardiac (IC), intraperitoneal (IP), intramuscular (IM) and oral (PO) at a dosage of 8 mg/kg body weight. Serial blood samples were obtained and plasma samples were analyzed by high performance liquid chromatography for ceftiofur (as measured its metabolite, desfuroylceftiofur (DFC) and DFC-related metabolite concentrations). Disposition pharmacokinetic data were best described by a two compartment open model for 1C and by a non-compartment model with no lag time for IP and IM administrations. Oral absorption of ceftiofur was not observed in this species. Following 1C, IP and IM ceftiofur sodium administration, the final elimination half-lives, maximum plasma concentration, time to reach maximum concentration, volume of distribution and plasma clearance were 0.38, 0.45 and 13.86 hours; 157.09, 31.54 and 8.86 mug/ml; 0, 0.25 and 0.5 hours; 0.09, 0.17, 0.53 l/kg; and 0.21, 0.26, 0.26 ml/min.kg, respectively. Desfuroylceftiofur metabolite was highly bound with plasma protein at pH 7.0 and 8.0.
520 $a For the histopathological studies, a single intramuscular dose of ceftiofur sodium at three different concentrations, 8 (1X), 40 (5X) and 80 (10X) mg/kg was administered to separate groups of grass carp for evaluation of the potential toxicity to major tissues involved in metabolism and excretion of this drug. These included the anterior kidney, posterior kidney, liver, and spleen. After 48 hours, lesions were seen in the posterior kidney at the highest dose of ceftiofur (10X). Morphological alterations observed microscopically included increased number of renal tubules, tubular necrosis and infiltration of inflammatory cells. No adverse effects on the glomeruli were observed at any concentration of the drug.
520 $a For the immunotoxicity studies on the non-specific immune response, dosages of either 8 or 40 mg/kg body weight were administered intramuscularly. After 24 and 48 h, leukocyte number, phagocytic ability and H2O 2 production were examined in the cells of the pronephros. The results showed that neither dosage had an effect on the number of leukocytes in the pronephros. Phagocytosis was also not significantly altered at either dosage in macrophages from the pronephros. Hydrogen peroxide production was not altered in the pronephros of fish dosed at 8 mg/kg, while at a dosage of 40 mg/kg, H2O2 production was significantly increased.
520 $a In summary, ceftiofur sodium has potential as an efficacious chemotherapeutic agent for controlling bacterial infection in brood stock and ornamental fish at the recommended dose of 8 mg/kg. A dose as high as 40 mg/kg can be use with careful consideration. This dosage may not directly injure the posterior kidney but it may affect the non-specific immune response of the fish.
590 $a School code: 0247.
650 4 $a Veterinary science. $3 3172798
690 $a 0778
710 2 $a Virginia Polytechnic Institute and State University. $3 1017496
773 0 $t Dissertation Abstracts International $g 64-09B.
790 $a 0247
791 $a Ph.D.
792 $a 2001
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3106793