Evidence map›Paper›PMID 31102352›Full record

ArticleZhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences2019

[I1363T mutation induces the defects in fast inactivation of human skeletal muscle voltage-gated sodium channel].

Siyang Tang, Jia Ye, Yuezhou Li

Open access · greenAbstract read
In one paragraph

Article in Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact, top 87% 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

0 citing papers in PubMed, 0 citations in OpenAlex.

No citing paper in PubMed yet.

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

3 authors at 1 institution in 1 country.

Siyang TangDepartment of Biophysics, Zhejiang University School of Medicine, Hangzhou 310058, China.
Jia YeDepartment of Biophysics, Zhejiang University School of Medicine, Hangzhou 310058, China.
Yuezhou LiDepartment of Biophysics, Zhejiang University School of Medicine, Hangzhou 310058, China.
Zhejiang University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo investigate the mechanism of congenital paramyotonia caused by human skeletal muscle voltage-gated sodium channel hNav1.4 mutant I1363T.

methodsThe conservation of the mutant site were detecled by using amino acid sequence alignment; the C-terminal mCherry fusion hNav1.4 was constructed, and the expression and distribution of wild type and hNav1.4 mutant I1363T were determined by confocal microscopy; the steady-state activation, fast inactivation and window current of wild type and hNav1.4 mutant I1363T were examined by whole-cell patch clamp.

resultsAlignment of the amino acid sequences revealed that Ile1363 is highly conserved in human sodium channels. There was no significant difference in expression level and distribution between wild type and I1363T. Although no significant differences were observed between I1363T mutant and wild type in the activation upon channel gating, the

conclusionsI1363T causes the defect in fast inactivation of hNav1.4, which may increase the excitability of muscle cells and be responsible for myotonia. The increased window current of I1363T may result in an increase of inward Na+ current, could subsequently inactivate the channels and lead to loss of excitability and paralysis.

Indexed as

Muscle, SkeletalNAV1.4 Voltage-Gated Sodium ChannelGene Expression ProfilingHumansIon Channel GatingMutationSequence Analysis, ProteinNAV1.4 Voltage-Gated Sodium Channel

Identifiers

PMID31102352
PMCPMC8800658
OpenAlexW2997600484

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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.