Quinolinic AcidQuinolinic AcidsAstrocytesKynurenine3-Hydroxyanthranilate 3,4-Dioxygenase3-Hydroxyanthranilic AcidPentosyltransferasesTryptophan OxygenaseTryptophanNeurotoxinsKynurenine 3-MonooxygenaseNicotinic AcidsHarmineKynurenic AcidNiacinCorpus StriatumTriosesBrainNADIndoleamine-Pyrrole 2,3,-DioxygenaseHuntington DiseasePicolinic AcidsConvulsantsMicroglia2-Amino-5-phosphonovalerateAspartic AcidDicarboxylic Acids