Effects of 540C91 [(E)-3-[2-(4'-pyridyl)-vinyl]-1H-indole], an inhibitor of hepatic tryptophan dioxygenase, on brain quinolinic acid in mice.

Journal Article (Journal Article)

Studies were undertaken to assess the role of the liver in the formation of the neurotoxin quinolinic acid in the brain. A selective and potent inhibitor of hepatic tryptophan 2,3-dioxygenase, 540C91 [(E)-3-[2-(4'-pyridyl)-vinyl]-1H-indole], largely prevented the elevation in mouse brain quinolinic acid resulting from parenteral injection of tryptophan (TRP). In contrast, 540C91 did not affect basal levels of the neurotoxin. Following induction of indoleamine dioxygenase with bacterial lipopolysaccharide, 540C91 was less effective in preventing the TRP-induced elevations in quinolinic acid. The data suggest that kynurenines, formed from tryptophan, by the liver and other extrahepatic organs can give rise to brain quinolinic acid.

Full Text

Duke Authors

Cited Authors

  • Reinhard, JF; Flanagan, EM; Madge, DJ; Iyer, R; Salter, M

Published Date

  • January 26, 1996

Published In

Volume / Issue

  • 51 / 2

Start / End Page

  • 159 - 163

PubMed ID

  • 8615884

Pubmed Central ID

  • 8615884

International Standard Serial Number (ISSN)

  • 0006-2952

Digital Object Identifier (DOI)

  • 10.1016/0006-2952(95)02167-1


  • eng

Conference Location

  • England