Evidence map›Paper›PMID 22007171›Full record

ArticleFrontiers in pharmacology2011

Na Channel β Subunits: Overachievers of the Ion Channel Family.

William J Brackenbury, Lori L Isom

Open access · goldAbstract read
In one paragraph

Article in Frontiers in pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 176 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
176citing papers in PubMed, 1 pooled it
9.0field-weighted citation impact, top 1% 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

176 citing papers in PubMed, 1 synthesis or guideline pooled it, 294 citations in OpenAlex.

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  13. Discovery of Novel NaResearch (Washington, D.C.) · 2025
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116 more citing papers are in PubMed but not listed here.

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

2 authors at 2 institutions in 2 countries.

William J BrackenburyDepartment of Biology, University of York York, UK.
Lori L Isom
University of Michigan–Ann Arbor · USUniversity of York · GB

Funding

Sodium Channel Beta Subunit Cell Adhesive InteractionsR01MH059980 · NIMH · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 2000 to 2010
$2.7M
Role of Sodium Channel SCN1B in Inherited EpilepsyR01NS076752 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 2011 to 2014
$1.6M
Molecular Control of Na+ Channel Density and Localization in Myelinated AxonsR01NS064245 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 2010 to 2014
$1.5M
Medical Research Council G1000508Medical Research Council G1000508(95657)NIMH NIH HHS R01 MH059980NINDS NIH HHS R01 NS064245NINDS NIH HHS R01 NS076752
6 · The paper itself

Abstract

Voltage-gated Na(+) channels (VGSCs) in mammals contain a pore-forming α subunit and one or more β subunits. There are five mammalian β subunits in total: β1, β1B, β2, β3, and β4, encoded by four genes: SCN1B-SCN4B. With the exception of the SCN1B splice variant, β1B, the β subunits are type I topology transmembrane proteins. In contrast, β1B lacks a transmembrane domain and is a secreted protein. A growing body of work shows that VGSC β subunits are multifunctional. While they do not form the ion channel pore, β subunits alter gating, voltage-dependence, and kinetics of VGSCα subunits and thus regulate cellular excitability in vivo. In addition to their roles in channel modulation, β subunits are members of the immunoglobulin superfamily of cell adhesion molecules and regulate cell adhesion and migration. β subunits are also substrates for sequential proteolytic cleavage by secretases. An example of the multifunctional nature of β subunits is β1, encoded by SCN1B, that plays a critical role in neuronal migration and pathfinding during brain development, and whose function is dependent on Na(+) current and γ-secretase activity. Functional deletion of SCN1B results in Dravet Syndrome, a severe and intractable pediatric epileptic encephalopathy. β subunits are emerging as key players in a wide variety of physiopathologies, including epilepsy, cardiac arrhythmia, multiple sclerosis, Huntington's disease, neuropsychiatric disorders, neuropathic and inflammatory pain, and cancer. β subunits mediate multiple signaling pathways on different timescales, regulating electrical excitability, adhesion, migration, pathfinding, and transcription. Importantly, some β subunit functions may operate independently of α subunits. Thus, β subunits perform critical roles during development and disease. As such, they may prove useful in disease diagnosis and therapy.

Indexed as

adhesiondevelopmentexcitabilityvoltage-gated Na+ channelβ subunit

Identifiers

PMID22007171
PMCPMC3181431
OpenAlexW2079044818

What OpenQuestion holds

Textmetadata
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.