Sodium dependent D-[3H]aspartate binding in cerebral cortex in patients with Alzheimer's and Parkinson's diseases

A J Cross, P Slater, M. Simpson, M.C. Royston, J F Deakin, R H Perry, E K Perry

Research output: Contribution to journalArticlepeer-review

Abstract

The sodium dependent binding of D-[3H]aspartate to the high-affinity glutamate uptake system was used as a marker of glutamate-releasing terminals in the cerebral cortex of brains from patients with Alzheimer-type dementia (ATD) and Parkinson's disease (PD). Sodium-dependent D-[3H]aspartate binding was reduced in the ATD patients but not in the PD patients. Within the PD patients no association was observed between sodium-dependent D-[3H]aspartate binding and the presence of dementia. In contrast choline acetyltransferase activity was reduced in both the ATD and the PD patients. The present results suggest that changes in the cortical cholinergic system can occur independently of the cortical glutamate system. The glutamatergic deficit in ATD may contribute to some of the clinical differences between the dementia of ATD and PD.

Original languageEnglish
Pages (from-to)213-217
Number of pages5
JournalNeuroscience letters
Volume79
Issue number1-2
Publication statusPublished - 18 Aug 1987

Keywords

  • Aged
  • Aged, 80 and over
  • Alzheimer Disease
  • Aspartic Acid
  • Cerebral Cortex
  • Choline O-Acetyltransferase
  • Humans
  • In Vitro Techniques
  • Kinetics
  • Parkinson Disease
  • Receptors, Glutamate
  • Receptors, Neurotransmitter
  • Sodium
  • Comparative Study
  • Journal Article
  • Research Support, Non-U.S. Gov't

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