Evidence map›Paper›PMID 25331068›Full record

ArticleActa neuropathologica communications2014

p38 MAP kinase-mediated NMDA receptor-dependent suppression of hippocampal hypersynchronicity in a mouse model of Alzheimer's disease.

Arne A Ittner, Amadeus Gladbach, Josefine Bertz, Lisa S Suh, Lars M Ittner

Open access · goldAbstract read
In one paragraph

Article in Acta neuropathologica communications, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 76 citations in OpenAlex.

  1. Review
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  3. High-caloric intake rescues early symptomatic AD-induced hippocampal neurovascular coupling deficits.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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  4. G protein-gated inwardly rectifying KHistology and histopathology · 2025
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  6. PLP1-Targeting Antisense Oligonucleotides Improve FOXG1 Syndrome Mice.International journal of molecular sciences · 2024
    Article
  7. Article
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  14. Article
  15. Review
  16. Article
  17. Rapid initiation of cell cycle reentry processes protects neurons from amyloid-β toxicity.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  18. Review
  19. Impaired θ-γ Coupling Indicates Inhibitory Dysfunction and Seizure Risk in a Dravet Syndrome Mouse Model.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  20. Involvement of p38 MAPK in Synaptic Function and Dysfunction.International journal of molecular sciences · 2020
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Arne A IttnerDementia Research Unit, School of Medical Sciences, Faculty of Medicine, UNSW Australia, Sydney, Australia. a.ittner@unsw.edu.au.
Amadeus GladbachDementia Research Unit, School of Medical Sciences, Faculty of Medicine, UNSW Australia, Sydney, Australia. a.gladbach@unsw.edu.au.
Josefine BertzDementia Research Unit, School of Medical Sciences, Faculty of Medicine, UNSW Australia, Sydney, Australia. j.bertz@unsw.edu.au.
Lisa S SuhDementia Research Unit, School of Medical Sciences, Faculty of Medicine, UNSW Australia, Sydney, Australia. lisa.suh@unsw.edu.au.
Lars M IttnerDementia Research Unit, School of Medical Sciences, Faculty of Medicine, UNSW Australia, Sydney, Australia. l.ittner@unsw.edu.au.
Neuroscience Research Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypersynchronicity of neuronal brain circuits is a feature of Alzheimer's disease (AD). Mouse models of AD expressing mutated forms of the amyloid-β precursor protein (APP), a central protein involved in AD pathology, show cortical hypersynchronicity. We studied hippocampal circuitry in APP23 transgenic mice using telemetric electroencephalography (EEG), at the age of onset of memory deficits. APP23 mice display spontaneous hypersynchronicity in the hippocampus including epileptiform spike trains. Furthermore, spectral contributions of hippocampal theta and gamma oscillations are compromised in APP23 mice, compared to non-transgenic controls. Using cross-frequency coupling analysis, we show that hippocampal gamma amplitude modulation by theta phase is markedly impaired in APP23 mice. Hippocampal hypersynchronicity and waveforms are differentially modulated by injection of riluzole and the non-competitive N-methyl-D-aspartate (NMDA) receptor inhibitor MK801, suggesting specific involvement of voltage-gated sodium channels and NMDA receptors in hypersynchronicity thresholds in APP23 mice. Furthermore, APP23 mice show marked activation of p38 mitogen-activated protein (MAP) kinase in hippocampus, and injection of MK801 but not riluzole reduces activation of p38 in the hippocampus. A p38 inhibitor induces hypersynchronicity in APP23 mice to a similar extent as MK801, thus supporting suppression of hypersynchronicity involves NMDA receptors-mediated p38 activity. In summary, we characterize components of hippocampal hypersynchronicity, waveform patterns and cross-frequency coupling in the APP23 mouse model by pharmacological modulation, furthering the understanding of epileptiform brain activity in AD.

Indexed as

Alzheimer DiseaseAnimalsDisease Models, AnimalDizocilpine MaleateElectrodes, ImplantedElectroencephalographyEnzyme InhibitorsEpilepsyExcitatory Amino Acid AntagonistsGamma RhythmHippocampusImidazolesMaleMice, Inbred C57BLMice, Transgenicp38 Mitogen-Activated Protein KinasesDizocilpine MaleateEnzyme InhibitorsExcitatory Amino Acid AntagonistsImidazolesp38 Mitogen-Activated Protein KinasesPyridinesReceptors, N-Methyl-D-AspartateRiluzoleSB 203580

Identifiers

PMID25331068
PMCPMC4212118
OpenAlexW2125866101

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.