Cited by 317Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Alterations in Expression of Glutamatergic Transporters and Receptors in Sporadic Alzheimer's Disease

Jacob, C.P., Koutsilieri, E., Bartl, J., Neuen-Jacob, E., Arzberger, T., Zander, N., Ravid, R., Roggendorf, W. +2 more·2007·Journal of Alzheimer's Disease

Abstract

Excitatory neurotransmitter dysfunction has been discussed to be involved in the pathophysiology of Alzheimer's disease (AD). In the current study we investigated gene and protein expression patterns of glutamatergic receptors and transporters in brains of AD patients in various stages of disease using gene chip arrays, real time PCR and immunohistochemistry. We found marked impairment in the expression of excitatory amino acid transporters (EAAT1 and EAAT 2) at both gene and protein levels in hippocampus and gyrus frontalis medialis of AD patients, already in early clinical stages of disease. The loss of EAAT immunoreactivity was particularly obvious in the vicinity of amyloid plaques. In contrast, EAAT expression was up-regulated in the cerebellum of these patients. Furthermore, a significant up-regulation of the glutamatergic kainate (GRIK4) receptor observed by gene arrays was confirmed by quantitative RT-PCR in late stages in the hippocampus of AD patients. Moreover, there were down-regulations of other glutamatergic receptors such as NMDA (GRINL1A) and AMPA (GRIA4) receptors. Our data show marked changes in the functional elements of the glutamatergic synapses such as glutamatergic receptors and transporters and indicate impaired glutamate clearing rendering neurons susceptible to excess extracellular glutamate and support further the involvement of excitotoxic mechanisms in the pathogenesis of AD.

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Registry

Crossref · 10.3233/jad-2007-11113

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40 of 40 references verified0 citation errors · 0 not checkable

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  • Loss or dysfunction of SLC1A2 has been implicated in multiple neurodegenerative and neuropsychiatric disorders, including AD where it is closely associated with cognitive decline.

    “Loss or dysfunction of SLC1A2 has been implicated in multiple neurodegenerative and neuropsychiatric disorders, including AD where it is closely associated with cognitive decline [126–131].”
  • Downregulation of the GluN1 subunit is observed in AD patient brain at different stages of neurodegenerative onset.

    “Downregulation of the GluN1 subunit is observed in AD patient brain at different stages of neurodegenerative onset [60].”

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Authors
Jacob, C. P., Koutsilieri, E., Bartl, J., Neuen-Jacob, E., Arzberger, T., Zander, N., Ravid, R., Roggendorf, W., Riederer, P., & Grünblatt, E.
Affiliations
  • University of Würzburg (DE)
  • Heinrich Heine University Düsseldorf (DE)
  • Netherlands Brain Bank (NL)
Venue
Journal of Alzheimer's Disease
Published
2007-03-01
Volume
11
Issue
1
Pages
97-116
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W118386170
Cited by
317
References
40
Citations by year
2026: 11 · 2025: 31 · 2024: 14 · 2023: 19 · 2022: 29 · 2021: 23 · 2020: 26 · 2019: 18 · 2018: 19 · 2017: 14 · 2016: 14 · 2015: 17 · 2014: 11 · 2013: 11 · 2012: 8
FWCI
8.27
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Brain, Female, Gene Expression Regulation, Humans, Male, Middle Aged, Reference Values, Receptors, Glutamate, Glutamic Acid, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Glutamate Plasma Membrane Transport Proteins, Plaque, Amyloid

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