PMID- 8118480 OWN - NLM STAT- MEDLINE DCOM- 19940405 LR - 20131121 IS - 1230-6002 (Print) IS - 1230-6002 (Linking) VI - 45 IP - 4 DP - 1993 Jul-Aug TI - Ketamine, but not glycine modulates quinolinate-induced neurodegeneration. PG - 339-47 AB - The influence of ketamine and glycine on the neurotoxicity of the N-methyl-D-aspartate-(NMDA)-receptor agonist quinolinic acid [QUIN; injected intracerebroventricularly (icv)] was studied in rats. Ketamine, an NMDA-receptor antagonist prevented completely the QUIN-induced hippocampal damage at a dosage of 40 mg/kg (140 mumol/kg, intraperitoneally applied). Glycine, a physiological co-agonist of the NMDA-receptor, was applied icv in addition to QUIN. Even at high doses (up to 1.33 mumol) glycine did not show any effects on QUIN neurotoxicity, if the neurotoxin was administered at a subliminal dose (0.25 mumol). The apparent lack of a potentiating effect of exogenously applied glycine favors the assumption that glycine binding sites are saturated under physiological conditions. FAU - Henschke, G AU - Henschke G AD - Institute of Medical Neurobiology, University of Magdeburg, Germany. FAU - Wolf, G AU - Wolf G FAU - Keilhoff, G AU - Keilhoff G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Poland TA - Pol J Pharmacol JT - Polish journal of pharmacology JID - 9313882 RN - 690G0D6V8H (Ketamine) RN - F6F0HK1URN (Quinolinic Acid) RN - TE7660XO1C (Glycine) SB - IM MH - Animals MH - Behavior, Animal/drug effects MH - Glycine/administration & dosage/*pharmacology MH - Hippocampus/cytology/*drug effects/pathology MH - Injections, Intraperitoneal MH - Injections, Intraventricular MH - Ketamine/administration & dosage/*pharmacology MH - Male MH - Nerve Degeneration/*drug effects MH - Pyramidal Cells/*drug effects/pathology MH - Quinolinic Acid/administration & dosage/*toxicity MH - Rats MH - Rats, Wistar EDAT- 1993/07/01 00:00 MHDA- 1993/07/01 00:01 CRDT- 1993/07/01 00:00 PHST- 1993/07/01 00:00 [pubmed] PHST- 1993/07/01 00:01 [medline] PHST- 1993/07/01 00:00 [entrez] PST - ppublish SO - Pol J Pharmacol. 1993 Jul-Aug;45(4):339-47.