Evidence map›Paper›PMID 30254235›Full record

ArticleMolecular psychiatry2018

The hippocampal extracellular matrix regulates pain and memory after injury.

Maral Tajerian, Victor Hung, Huy Nguyen, Gail Lee, Lydia-Marie Joubert, Andrey Victorovich Malkovskiy, Bende Zou, Simon Xie, Ting-Ting Huang, J David Clark

Open access · hybridAbstract read
In one paragraph

Article in Molecular psychiatry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

49 citing papers in PubMed, 88 citations in OpenAlex.

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  18. Peripheral inflammation is accompanied by cerebral hypoperfusion in mice.Frontiers in pain research (Lausanne, Switzerland) · 2025
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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

10 authors at 3 institutions in 1 country.

Maral TajerianDepartment of Anesthesiology, Stanford University School of Medicine, Stanford, CA, USA. maral@stanford.edu.
Victor HungVeterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
Huy NguyenVeterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
Gail LeeDepartment of Biology, Stanford University, Stanford, CA, USA.
Lydia-Marie JoubertCell Sciences Imaging Facility, Stanford University, Stanford, CA, USA.
Andrey Victorovich MalkovskiyDepartment of Biomaterials and Advanced Drug Delivery, Stanford University, Stanford, CA, USA.
Bende ZouAfaSci Research Laboratories, Mountainview, CA, USA.ORCID http://orcid.org/0000-0002-2907-3102
Simon XieDepartment of Anesthesiology, Stanford University School of Medicine, Stanford, CA, USA.
Ting-Ting HuangVeterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA.
J David ClarkDepartment of Anesthesiology, Stanford University School of Medicine, Stanford, CA, USA.
VA Palo Alto Health Care System · USStanford University · USCACI International (United States) · US

Funding

Interdisciplinary Research Training in Pain and Substance Use DisordersT32DA035165 · NIDA · STANFORD UNIVERSITY · PI SEAN C MACKEY · 2013 to 2026
$7.2M
Inflammasome Activation in Complex Regional Pain SyndromeR01NS072143 · NINDS · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI CLARK, DAVID J., KINGERY, WADE S · 2011 to 2015
$1.6M
Mechanisms of Neuroinflammation after FractureR01NS072168 · NINDS · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI KINGERY, WADE S · 2011 to 2014
$962k
NIDA NIH HHS T32 DA035165NINDS NIH HHS R01 NS072143NINDS NIH HHS R01 NS072168U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) NS072168U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke (NINDS) 5T32DA035165-02
6 · The paper itself

Abstract

Chronic pain poses a heavy burden for the individual and society, comprising personal suffering, comorbid psychiatric symptoms, cognitive decline, and disability. Treatment options are poor due in large part to pain centralization, where an initial injury can result in lasting CNS maladaptations. Hippocampal cellular plasticity in chronic pain has become a focus of study due to its roles in cognition, memory, and the experience of pain itself. However, the extracellular alterations that parallel and facilitate changes in hippocampal function have not been addressed to date. Here we show structural and biochemical plasticity in the hippocampal extracellular matrix (ECM) that is linked to behavioral, cellular, and synaptic changes in a mouse model of chronic pain. Specifically, we report deficits in working location memory that are associated with decreased hippocampal dendritic complexity, altered ECM microarchitecture, decreased ECM rigidity, and changes in the levels of key ECM components and enzymes, including increased levels of MMP8. We also report aberrations in long-term potentiation (LTP) and a loss of inhibitory interneuron perineuronal ECM nets, potentially accounting for the aberrations in LTP. Finally, we demonstrate that MMP8 is upregulated after injury and that its genetic downregulation normalizes the behavioral, electrophysiological, and extracellular alterations. By linking specific extracellular changes to the chronic pain phenotype, we provide a novel mechanistic understanding of pain centralization that provides new targets for the treatment of chronic pain.

Indexed as

AnimalsCell PlasticityCognitionCognitive DysfunctionExtracellular MatrixHippocampusInterneuronsLong-Term PotentiationMaleMatrix Metalloproteinase 8MemoryMemory, Short-TermMiceMice, Inbred C57BLModels, AnimalNeuronal PlasticityMatrix Metalloproteinase 8MMP8 protein, mouse

Identifiers

PMID30254235
PMCPMC6294737
OpenAlexW2890965113

What OpenQuestion holds

Textmetadata
LicenceTDM
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.