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Effect of NMDA and 2-amino-7-phosphonoheptanoate focal injection into the ventrolateral thalamic nucleus on the high pressure neurological syndrome in the rat.

Abstract
We report the effect of focal injections of N-methyl-D-aspartate (NMDA, 5 nmol) and 2-amino-7-phosphonoheptanoate (APH, 5 and 10 nmol) into the ventrolateral thalamic nucleus on behavioural symptoms of the high pressure neurological syndrome in rats. The injection of NMDA significantly lowers the threshold pressure for tremor and increases its intensity. The injection of APH significantly increases the threshold pressure for tremor and decreases its intensity. APH, 10 nmol, significantly increases the threshold pressure for myoclonus and convulsions. These protective effects are, however, less pronounced than those produced by either systemic injection of APH or its focal infusion into the basal ganglia output system.
AuthorsM H Millan, B Wardley-Smith, M J Halsey, B S Meldrum
JournalBrain research (Brain Res) Vol. 507 Issue 2 Pg. 354-6 (Jan 22 1990) ISSN: 0006-8993 [Print] Netherlands
PMID2159822 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Amino Acids
  • Receptors, N-Methyl-D-Aspartate
  • Receptors, Neurotransmitter
  • Aspartic Acid
  • N-Methylaspartate
  • 2-Amino-5-phosphonovalerate
  • 2-amino-7-phosphonoheptanoic acid
Topics
  • 2-Amino-5-phosphonovalerate (analogs & derivatives)
  • Amino Acids (pharmacology, therapeutic use)
  • Animals
  • Aspartic Acid (analogs & derivatives, pharmacology)
  • Central Nervous System Diseases (physiopathology)
  • High Pressure Neurological Syndrome (drug therapy, physiopathology)
  • Male
  • Microinjections
  • N-Methylaspartate
  • Rats
  • Rats, Inbred Strains
  • Receptors, N-Methyl-D-Aspartate
  • Receptors, Neurotransmitter (drug effects, physiology)
  • Thalamic Nuclei (drug effects, physiopathology)

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