Cited by 1,314Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsNeurological Disease Mechanisms and Treatments

Activation of microglial cells by β-amyloid protein and interferon-γ

Meda, Lucia, Cassatella, Marco A., Szendrei, Gyorgyi I., Otvos, Laszlo, Baron, Pierluigi, Villalba, Martin, Ferrari, Davide, Rossi, Filippo·1995·Nature

Abstract

Alzheimer's disease is the most common cause of progressive intellectual failure. The lesions that develop, called senile plaques, are extracellular deposits principally composed of insoluble aggregates of beta-amyloid protein (A beta), infiltrated by reactive microglia and astrocytes. Although A beta, and a portion of it, the fragment 25-35 (A beta (25-35)), have been shown to exert a direct toxic effect on neurons, the role of microglia in such neuronal injury remains unclear. Here we report a synergistic effect between A beta and interferon-gamma (IFN-gamma) in triggering the production of reactive nitrogen intermediates and tumour-necrosis factor-alpha (TNF-alpha) from microglia. Furthermore, using co-culture experiments, we show that activation of microglia with IFN-gamma and A beta leads to neuronal cell injury in vitro. These findings suggest that A beta and IFN-gamma activate microglia to produce reactive nitrogen intermediates and TNF-alpha, and this may have a role in the pathogenesis of neuronal degeneration observed in ageing and Alzheimer's disease.

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Crossref · 10.1038/374647a0

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Authors
Meda, L., Cassatella, M. A., Szendrei, G. I., Otvos, L., Baron, P., Villalba, M., Ferrari, D., & Rossi, F.
Affiliations
  • University of Verona (IT)
  • University of Milan (IT)
  • University of Ferrara (IT)
Venue
Nature
Published
1995-04
Volume
374
Issue
6523
Pages
647-650
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1991763618
Cited by
1,314
References
2
Citations by year
2026: 7 · 2025: 18 · 2024: 15 · 2023: 14 · 2022: 32 · 2021: 25 · 2020: 28 · 2019: 33 · 2018: 24 · 2017: 21 · 2016: 32 · 2015: 38 · 2014: 45 · 2013: 46 · 2012: 48
FWCI
41.28
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
microglial activation, amyloid-beta, interferon-gamma, Alzheimer's disease, amyloid plaques, reactive nitrogen intermediates, TNF-α, neuronal injury, neuroinflammation, neurodegeneration
MeSH terms
Aging, Alzheimer Disease, Amino Acid Sequence, Animals, Cells, Cultured, Interferon-gamma, Molecular Sequence Data, Nerve Degeneration, Neuroglia, Nitrogen, Peptide Fragments, Tumor Necrosis Factor-alpha, Amyloid beta-Peptides, Inflammation Mediators, Mice, Rats

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