PMID- 6120087 OWN - NLM STAT- MEDLINE DCOM- 19820412 LR - 20190721 IS - 0014-4819 (Print) IS - 0014-4819 (Linking) VI - 45 IP - 1-2 DP - 1982 TI - The action of six antagonists of the excitatory amino acids on neurones of the rat spinal cord. PG - 151-6 AB - The differential susceptibility to blockade by six antagonists of the excitatory actions produced by a number of acidic amino acids has been determined. Four of these, DL-alpha-aminoadipate, 2-amino-5-phosphonovalerate, 2-amino-6-phosphonocaproate and gamma-D-glutamylglycine block the action of N-methyl-D-aspartate (NMDA) most effectively and those of L-glutamate, trans-1-amino-1,3-dicarboxycyclopentane (trans-ADCP) and kainate the least. Cis-2,3-piperidine dicarboxylate resembles the other four, save in that kainate excitations are also powerfully blocked. L-glutamate diethylester was most effective against L-glutamate and least against NMDA: kainate and trans-ADCP excitations were also relatively unaffected. The data support the hypothesis of the existence of at least three classes of amino acid receptor (NMDA-, L-glutamate- and kainate-excited), and the possibility of a fourth category activated by trans-ADCP must be considered. FAU - McLennan, H AU - McLennan H FAU - Liu, J AU - Liu J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Exp Brain Res JT - Experimental brain research JID - 0043312 RN - 0 (Amino Acids) RN - 0 (Glutamates) RN - 30KYC7MIAI (Aspartic Acid) RN - 3KX376GY7L (Glutamic Acid) RN - 6384-92-5 (N-Methylaspartate) RN - SIV03811UC (Kainic Acid) SB - IM MH - Amino Acids/*pharmacology MH - Animals MH - Aspartic Acid/analogs & derivatives/pharmacology MH - Glutamates/pharmacology MH - Glutamic Acid MH - Kainic Acid/pharmacology MH - N-Methylaspartate MH - Neurons/drug effects/*physiology MH - Rats MH - Spinal Cord/drug effects/*physiology MH - Structure-Activity Relationship EDAT- 1982/01/01 00:00 MHDA- 1982/01/01 00:01 CRDT- 1982/01/01 00:00 PHST- 1982/01/01 00:00 [pubmed] PHST- 1982/01/01 00:01 [medline] PHST- 1982/01/01 00:00 [entrez] AID - 10.1007/BF00235774 [doi] PST - ppublish SO - Exp Brain Res. 1982;45(1-2):151-6. doi: 10.1007/BF00235774.