Toxicity and pharmacokinetics of the antibiotic fumagillin in yearling rainbow trout (Salmo gairdneri).

Journal Article (Journal Article)

Yearling trout were administered fumagillin dicyclohexylamine (FDCH), an antibiotic that has shown promise for controlling myxozoan parasites in fish. FDCH was fed at 0.25 or 1 g/kg food at 1.5% body weight per day for 60 days, and gill, liver, kidney, spleen, thymus, intestine, and heart were examined histologically. In both treatment groups the hematopoietic tissue of the kidney and spleen was reduced and hematocrit was significantly lower relative to controls. No alteration was found in liver, intestine, heart, thymus, or gill. FDCH was also administered to trout through an indwelling catheter placed in the dorsal aorta. Plasma FDCH was measured using reverse-phase HPLC, and clearance microconstants were estimated. At the highest doses (60 and 30 mg/kg body wt) fumagillin was lethal within about 6 hr, and histological examination revealed extensive toxic alteration in liver and posterior kidney. Plasma clearance at 6 and 3 mg/kg fit a two-compartment model with a rapid alpha phase (i.e., 20 min) but a prolonged beta phase (5.4 days). Although these fish survived for at least 96 hr, renal tubular alteration remained.

Full Text

Duke Authors

Cited Authors

  • Laurén, DJ; Wishkovsky, A; Groff, JM; Hedrick, RP; Hinton, DE

Published Date

  • May 1989

Published In

Volume / Issue

  • 98 / 3

Start / End Page

  • 444 - 453

PubMed ID

  • 2718173

Electronic International Standard Serial Number (EISSN)

  • 1096-0333

International Standard Serial Number (ISSN)

  • 0041-008X

Digital Object Identifier (DOI)

  • 10.1016/0041-008x(89)90173-7


  • eng