Evidence map›Paper›PMID 28292736›Full record

ArticleEpilepsy research2017

Increased metalloproteinase activity in the hippocampus following status epilepticus.

Deepti Dubey, Paulette A McRae, Elyse K Rankin-Gee, Esther Baranov, Luke Wandrey, Stephanie Rogers, Brenda E Porter

Abstract read
In one paragraph

Article in Epilepsy research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
–field-weighted citation impact
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

44 citing papers in PubMed.

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  14. Extracellular Matrix Regulation in Physiology and in Brain Disease.International journal of molecular sciences · 2023
    Review
  15. Review
  16. Review
  17. LongitudinalNeurophotonics · 2023
    Article
  18. Review
  19. Review
  20. Crosstalk between neuroinflammation and oxidative stress in epilepsy.Frontiers in cell and developmental biology · 2022
    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

7 authors.

Deepti DubeyDepartment of Neurology, School of Medicine, Stanford University, 1201 Welch Road, P211 MSLS, Stanford CA 94305, United States.
Paulette A McRaeThe Children's Hospital of Philadelphia, Department of Pediatrics and Division of Neurology, 34th and Civic Center Boulevard, Philadelphia PA 19104, United States.
Elyse K Rankin-GeeDepartment of Neurology, School of Medicine, Stanford University, 1201 Welch Road, P211 MSLS, Stanford CA 94305, United States.
Esther BaranovThe Children's Hospital of Philadelphia, Department of Pediatrics and Division of Neurology, 34th and Civic Center Boulevard, Philadelphia PA 19104, United States.
Luke WandreyThe Children's Hospital of Philadelphia, Department of Pediatrics and Division of Neurology, 34th and Civic Center Boulevard, Philadelphia PA 19104, United States.
Stephanie RogersThe Children's Hospital of Philadelphia, Department of Pediatrics and Division of Neurology, 34th and Civic Center Boulevard, Philadelphia PA 19104, United States.
Brenda E PorterDepartment of Neurology, School of Medicine, Stanford University, 1201 Welch Road, P211 MSLS, Stanford CA 94305, United States; The Children's Hospital of Philadelphia, Department of Pediatrics and Division of Neurology, 34th and Civic Center Boulevard, Philadelphia PA 19104, United States. Electronic address: brenda2@stanford.edu.

Funding

CRE Mediated Transcription in EpileptogenesisR01NS056222 · NINDS · STANFORD UNIVERSITY · PI PORTER, BRENDA ELAINE · 2008 to 2012
$2.0M
NINDS NIH HHS R01 NS056222
6 · The paper itself

Abstract

Increased neuronal plasticity and neuronal cell loss has been implicated in the development of epilepsy following injury. Parvalbumin fast spiking inhibitory interneurons have a robust extracellular matrix coating their cell bodies and the proximal dendrites called the perineuronal net (PNN). The role of the PNN is not clear but it has been implicated in closing of the critical period, altering seizure thresholds and providing neuronal protection from oxidative stress. The PNN is susceptible to degradation following a prolonged seizure and there is an increase in proteolytic-fragments of the PNN enriched proteoglycan aggrecan (Dzwonek et al., 2004). Here we demonstrate an increase in matrix metalloproteinase (MMP) activity in the hippocampus following status epilepticus (SE). We further assessed MMP3 and 13, two of 24 identified MMPs, both MMP3 and 13 mRNA increase in the hippocampus after SE and MMP13 activity increases by functional assay as well as it co-localizes with PNN in rat brain. In contrast, two of the brain expressed ADAMTS (A Disintegrin And Metalloproteinase with ThromboSpondin motifs) also implicated in aggrecan degradation, did not consistently increase following SE though ADAMTS4 is highly expressed in glia and ADAMTS5 in neuronal cell bodies and their processes. The increase in MMP activity following SE suggests that in the future studies, MMP inhibitors are candidates for blocking PNN degradation and assessing the role of the PNN loss in epileptogenesis and cellular function.

Indexed as

AggrecansAnimalsExtracellular MatrixHippocampusInterneuronsMaleMetalloproteasesNeuronal PlasticityParvalbuminsRats, Sprague-DawleySeizuresStatus EpilepticusAggrecansMetalloproteasesParvalbuminsADAMTSEpilepsyMatrix metalloproteinasePerineuronal netStatus epilepticus

Identifiers

PMID28292736
PMCPMC6690398

What OpenQuestion holds

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Registered trials

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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.