Cited by 348Neuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology ResearchTryptophan and brain disorders

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Neuroinflammatory TNFα Impairs Memory via Astrocyte Signaling

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Abstract

The occurrence of cognitive disturbances upon CNS inflammation or infection has been correlated with increased levels of the cytokine tumor necrosis factor-α (TNFα). To date, however, no specific mechanism via which this cytokine could alter cognitive circuits has been demonstrated. Here, we show that local increase of TNFα in the hippocampal dentate gyrus activates astrocyte TNF receptor type 1 (TNFR1), which in turn triggers an astrocyte-neuron signaling cascade that results in persistent functional modification of hippocampal excitatory synapses. Astrocytic TNFR1 signaling is necessary for the hippocampal synaptic alteration and contextual learning-memory impairment observed in experimental autoimmune encephalitis (EAE), an animal model of multiple sclerosis (MS). This process may contribute to the pathogenesis of cognitive disturbances in MS, as well as in other CNS conditions accompanied by inflammatory states or infections.

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Crossref · 10.1016/j.cell.2015.11.023

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Metadata

Authors
Habbas, S., Santello, M., Becker, D., Stubbe, H., Zappia, G., Liaudet, N., Klaus, F. R., Kollias, G., Fontana, A., Pryce, C. R., Suter, T., & Volterra, A.
Affiliations
  • University of Lausanne (CH)
  • University of Zurich (CH)
  • Alexander Fleming Biomedical Sciences Research Center (GR)
  • University Hospital Zurich (CH)
Corresponding author
Volterra, Andrea
Venue
Cell
Publisher
Elsevier BV
Published
2015-12
Volume
163
Issue
7
Pages
1730-1741
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2190725993
Cited by
347
References
52
Citations by year
2026: 25 · 2025: 28 · 2024: 28 · 2023: 31 · 2022: 43 · 2021: 42 · 2020: 35 · 2019: 41 · 2018: 30 · 2017: 29 · 2016: 14 · 2015: 1
FWCI
13.15
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, cc-by-nc)
  • SERVAL (Université de Lausanne) (acceptedVersion, other-oa)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
  • Bern Open Repository and Information System (University of Bern) (submittedVersion)
  • IRIS (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, cc-by-nc)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (140999, 141137, 31003A)
  • Université de Lausanne
  • Universität Zürich
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
TNF-α, TNFR1, astrocytes, astrocyte-neuron communication, hippocampus, dentate gyrus, synaptic plasticity, memory impairment, contextual learning, experimental autoimmune encephalitis, multiple sclerosis, neuroinflammation, cognitive impairment
MeSH terms
Animals, Astrocytes, Encephalomyelitis, Autoimmune, Experimental, Humans, Learning, Memory, Multiple Sclerosis, Piperidines, Tumor Necrosis Factor-alpha, Signal Transduction, Receptors, N-Methyl-D-Aspartate, Dentate Gyrus, Receptors, Tumor Necrosis Factor, Type I, Mice

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