Evidence map›Paper›PMID 28290248›Full record

ReviewCurrent neuropharmacology2017

The α2δ Subunit and Absence Epilepsy: Beyond Calcium Channels?

Roberta Celli, Ines Santolini, Michela Guiducci, Gilles van Luijtelaar, Pasquale Parisi, Pasquale Striano, Roberto Gradini, Giuseppe Battaglia, Richard T Ngomba, Ferdinando Nicoletti

Open access · bronzeAbstract readReview
In one paragraph

Review in Current neuropharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 19 citations in OpenAlex.

  1. Review
  2. Pathophysiological Roles of Auxiliary Calcium Channel αHandbook of experimental pharmacology · 2023
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Neuronal αPflugers Archiv : European journal of physiology · 2020
    Review
  8. Review
  9. Review
  10. Review
  11. Article
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 5 institutions in 3 countries.

Roberta CelliI.R.C.C.S. Neuromed, Neuropharmacology Unit, Pozzilli, (IS), Italy.
Ines SantoliniI.R.C.C.S. Neuromed, Neuropharmacology Unit, Pozzilli, (IS), Italy.
Michela GuiducciDepartments of Neurosciences, Mental Health and Sensory Organs, Experimental Medicine, and Physiology and Pharmacology, University Sapienza, Rome, Italy.
Gilles van LuijtelaarDonders Centre for Cognition, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen. Netherlands.
Pasquale ParisiDepartments of Neurosciences, Mental Health and Sensory Organs, Experimental Medicine, and Physiology and Pharmacology, University Sapienza, Rome, Italy.
Pasquale StrianoPediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, "G. Gaslini" Institute, Genova, Italy.
Roberto GradiniI.R.C.C.S. Neuromed, Neuropharmacology Unit, Pozzilli, (IS), Italy.
Giuseppe BattagliaI.R.C.C.S. Neuromed, Neuropharmacology Unit, Pozzilli, (IS), Italy.
Richard T NgombaUniversity of Lincoln, School of Pharmacy, Lincoln, United Kingdom.
Ferdinando NicolettiDepartment of Physiology and Pharmacology, University Sapienza, Piazzale Aldo Moro, 5, 00185 Rome, Italy.
Istituto Neurologico Mediterraneo · ITSapienza University of Rome · ITRadboud University Nijmegen · NLUniversity of Genoa · ITUniversity of Lincoln · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpike-wave discharges, underlying absence seizures, are generated within a cortico-thalamo-cortical network that involves the somatosensory cortex, the reticular thalamic nucleus, and the ventrobasal thalamic nuclei. Activation of T-type voltage-sensitive calcium channels (VSCCs) contributes to the pathological oscillatory activity of this network, and some of the first-line drugs used in the treatment of absence epilepsy inhibit T-type calcium channels. The α2δ subunit is a component of high voltage-activated VSCCs (i.e., L-, N-, P/Q-, and R channels) and studies carried out in heterologous expression systems suggest that it may also associate with T channels. The α2δ subunit is also targeted by thrombospondins, which regulate synaptogenesis in the central nervous system.

objectiveTo discuss the potential role for the thrombospondin/α2δ axis in the pathophysiology of absence epilepsy.

methodsWe searched PubMed articles for the terms "absence epilepsy", "T-type voltage-sensitive calcium channels", "α2δ subunit", "ducky mice", "pregabalin", "gabapentin", "thrombospondins", and included papers focusing this Review's scope.

resultsWe moved from the evidence that mice lacking the α2δ-2 subunit show absence seizures and α 2δ ligands (gabapentin and pregabalin) are detrimental in the treatment of absence epilepsy. This suggests that α2δ may be protective against absence epilepsy via a mechanism that does not involve T channels. We discuss the interaction between thrombospondins and α2δ and its potential relevance in the regulation of excitatory synaptic formation in the cortico-thalamo-cortical network.

conclusionWe speculate on the possibility that the thrombospondin/α2 δ axis is critical for the correct functioning of the cortico-thalamo-cortical network, and that abnormalities in this axis may play a role in the pathophysiology of absence epilepsy.

Indexed as

AnimalsCalcium ChannelsEpilepsy, AbsenceHumansThrombospondinsCalcium ChannelsThrombospondinsabsence epilepsyducky micegabapentinnon-T-type voltage-sensitive Ca2+ channelspregabalinthrombospondinsT-type voltage-sensitive Ca2+ channelsα2δ subunit

Identifiers

PMID28290248
PMCPMC5652034
OpenAlexW2593333921

What OpenQuestion holds

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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.