Evidence map›Paper›PMID 21569247›Full record

ArticleMolecular pain2011

Nav1.7 is the predominant sodium channel in rodent olfactory sensory neurons.

Hye-Sook Ahn, Joel A Black, Peng Zhao, Lynda Tyrrell, Stephen G Waxman, Sulayman D Dib-Hajj

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.2field-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

33 citing papers in PubMed, 61 citations in OpenAlex.

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  3. Targeting Supramolecular Active Complexes of NaAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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  18. Insensitivity to Pain upon Adult-Onset Deletion of Nav1.7 or Its Blockade with Selective Inhibitors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
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  19. DRG Voltage-Gated Sodium Channel 1.7 Is Upregulated in Paclitaxel-Induced Neuropathy in Rats and in Humans with Neuropathic Pain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
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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

6 authors at 2 institutions in 1 country.

Hye-Sook AhnDepartment of Neurology, Yale University School of Medicine, New Haven, 06520, USA.
Joel A Black
Peng Zhao
Lynda Tyrrell
Stephen G Waxman
Sulayman D Dib-Hajj
Yale University · USVA Connecticut Healthcare System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVoltage-gated sodium channel Nav1.7 is preferentially expressed in dorsal root ganglion (DRG) and sympathetic neurons within the peripheral nervous system. Homozygous or compound heterozygous loss-of-function mutations in SCN9A, the gene which encodes Nav1.7, cause congenital insensitivity to pain (CIP) accompanied by anosmia. Global knock-out of Nav1.7 in mice is neonatal lethal reportedly from starvation, suggesting anosmia. These findings led us to hypothesize that Nav1.7 is the main sodium channel in the peripheral olfactory sensory neurons (OSN, also known as olfactory receptor neurons).

methodsWe used multiplex PCR-restriction enzyme polymorphism, in situ hybridization and immunohistochemistry to determine the identity of sodium channels in rodent OSNs.

resultsWe show here that Nav1.7 is the predominant sodium channel transcript, with low abundance of other sodium channel transcripts, in olfactory epithelium from rat and mouse. Our in situ hybridization data show that Nav1.7 transcripts are present in rat OSNs. Immunostaining of Nav1.7 and Nav1.6 channels in rat shows a complementary accumulation pattern with Nav1.7 in peripheral presynaptic OSN axons, and Nav1.6 primarily in postsynaptic cells and their dendrites in the glomeruli of the olfactory bulb within the central nervous system.

conclusionsOur data show that Nav1.7 is the dominant sodium channel in rat and mouse OSN, and may explain anosmia in Nav1.7 null mouse and patients with Nav1.7-related CIP.

Indexed as

AnimalsGanglia, SpinalGene Expression RegulationIn Situ HybridizationIon Channel GatingMaleMiceMice, Inbred C57BLNAV1.6 Voltage-Gated Sodium ChannelNAV1.7 Voltage-Gated Sodium ChannelOlfactory MucosaOlfactory Receptor NeuronsPolymerase Chain ReactionRatsRats, Sprague-DawleyRNA, MessengerNAV1.6 Voltage-Gated Sodium ChannelNAV1.7 Voltage-Gated Sodium ChannelRNA, MessengerScn8a protein, ratScn9a protein, mouseScn9a protein, ratSodium Channels

Identifiers

PMID21569247
PMCPMC3101130
OpenAlexW2044875580

What OpenQuestion holds

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LicenceCC BY
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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.