title: Quinolinic acid evokes [3H]acetylcholine release in striatal slices: mediation by NMDA-type excitatory amino acid receptors.
abstract: Quinolinic acid evoked the release of [3H]acetylcholine from striatal slices with an EC50 of approximately 2 mM and an efficacy similar to that of N-methyl-D,L-aspartic acid. (+/-)-2-Amino-5-phosphonopentanoic acid and (-)-2-amino-7-phosphonoheptanoic acid antagonized quinolinic acid-evoked release, while glutamate diethylester and 2-amino-4-phosphonobutyric acid were ineffective as antagonists. Release of [3H]acetylcholine evoked by quinolinic acid was strongly attenuated by the presence of magnesium (1.2 mM) in the medium. The results are consistent with the interaction of quinolinic acid with NMDA-type excitatory amino acid receptors on the striatal cholinergic interneurons.
mesh_terms: D015763:2-Amino-5-phosphonovalerate / Q000031:analogs & derivatives; D000109:Acetylcholine / Q000378:metabolism*; D000596:Amino Acids / Q000494:pharmacology; D000613:Aminobutyrates / Q000494:pharmacology; D000818:Animals; D003342:Corpus Striatum / Q000187:drug effects*; D004347:Drug Interactions; D066298:In Vitro Techniques; D008297:Male; D011725:Pyridines / Q000494:pharmacology*; D017378:Quinolinic Acid; D011805:Quinolinic Acids / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D011956:Receptors, Cell Surface / Q000187:drug effects*; D016194:Receptors, N-Methyl-D-Aspartate; D014316:Tritium; D014633:Valine / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D000596:Amino Acids; D000613:Aminobutyrates; D011725:Pyridines; D011805:Quinolinic Acids; D011956:Receptors, Cell Surface; D016194:Receptors, N-Methyl-D-Aspartate; D014316:Tritium; D015763:2-Amino-5-phosphonovalerate; D017378:Quinolinic Acid; C012729:2-amino-4-phosphonobutyric acid; D014633:Valine; D000109:Acetylcholine; C031231:2-amino-7-phosphonoheptanoic acid