Neuronal depressant effects of diethylester derivatives of excitatory amino acids.
The effect of iontophoretically applied kainic acid diethylester (KDEE) on the firing rate of feline spinal interneurones was investigated and compared with the action of glutamic acid diethyles (GDEE) and aspartic acid diethylester (ADEE). All these esters reversibly reduced spontaneous neuronal firing and increased spike height, KDEE being the most active of this group. KDEE decreased response to glutamate, acetylcholine, and peripheral field stimulation, showing that its depressant action is not due to a selective antagonism of an excitatory putative transmitter.
D000109:Acetylcholine / Q000494:pharmacology; D000596:Amino Acids / Q000494:pharmacology*; D000818:Animals; D001224:Aspartic Acid / Q000494:pharmacology; D002415:Cats; D005071:Evoked Potentials / Q000187:drug effects; D005971:Glutamates / Q000494:pharmacology; D007608:Kainic Acid / Q000031:analogs & derivatives / Q000494:pharmacology; D009474:Neurons / Q000187:drug effects / Q000502:physiology*; D013116:Spinal Cord / Q000187:drug effects / Q000502:physiology*
D000596:Amino Acids; D005971:Glutamates; D001224:Aspartic Acid; D000109:Acetylcholine; D007608:Kainic Acid