Selective antagonist activity of 5-aminohex-2-enedioic acid on amino acid excitation of cat spinal neurones.
D- and L-5-aminohex-2-enedioic acid (AHED) and the DL-2-bromo derivative, which are conformationally restricted analogues of the excitatory amino acid antagonist D-alpha-aminoadipic acid (D alpha AA), were tested microelectrophoretically on cat spinal neurones. D-AHED reduced the excitatory action of N-methyl-D-aspartate (NMDA) to a greater extent than that of L-glutamate and the potency of this action was a half to a third that of D alpha AA. The DL-2-bromo derivative excited neurons, an effect greater than that of L-glutamate and not blocked by either D alpha AA or L-glutamic acid diethyl ester.
D015074:2-Aminoadipic Acid / Q000494:pharmacology; D000596:Amino Acids / Q000494:pharmacology*; D000600:Amino Acids, Dicarboxylic / Q000494:pharmacology*; D000818:Animals; D001224:Aspartic Acid / Q000031:analogs & derivatives / Q000494:pharmacology; D002415:Cats; D005971:Glutamates / Q000494:pharmacology; D018698:Glutamic Acid; D007395:Interneurons / Q000502:physiology; D016202:N-Methylaspartate; D009474:Neurons / Q000187:drug effects / Q000502:physiology*; D013116:Spinal Cord / Q000187:drug effects / Q000502:physiology*; D013329:Structure-Activity Relationship
D000596:Amino Acids; D000600:Amino Acids, Dicarboxylic; D005971:Glutamates; D015074:2-Aminoadipic Acid; D001224:Aspartic Acid; D018698:Glutamic Acid; D016202:N-Methylaspartate; C035259:5-amino-2-hexenedioic acid