Evidence map›Paper›PMID 25811907›Full record

ArticlePloS one2015

Hydrogen sulfide regulates the colonic motility by inhibiting both L-type calcium channels and BKCa channels in smooth muscle cells of rat colon.

Xiaojing Quan, Hesheng Luo, Yin Liu, Hong Xia, Wei Chen, Qincai Tang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

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  14. The role of gasotransmitters in neonatal physiology.Nitric oxide : biology and chemistry · 2020
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  15. An Indole Alkaloid Extracted fromGastroenterology research and practice · 2020
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  16. Review
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  18. Vasoconstriction triggered by hydrogen sulfide: Evidence for NaBiochemistry and biophysics reports · 2017
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  20. Augmentation of cGMP/PKG pathway and colonic motility by hydrogen sulfide.American journal of physiology. Gastrointestinal and liver physiology · 2017
    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

6 authors at 3 institutions in 1 country.

Xiaojing QuanDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Hesheng LuoDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Yin LiuDepartment of Gastroenterology, the Affiliated Hospital of Guilin Medical College, Guilin, China.
Hong XiaDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China; Key Laboratory of Hubei Province for Digestive System Diseases, Wuhan, China.
Wei ChenDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Qincai TangDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Wuhan University · CNRenmin Hospital of Wuhan University · CNAffiliated Hospital of Guilin Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the hypothesis that hydrogen sulfide (H2S) regulates the colonic motility by modulating both L-type voltage-dependent calcium channels and large conductance Ca2+-activated K+ (BKCa) channels.

methodsImmunohistochemistry was performed on rat colonic samples to investigate the localization of the H2S-producing enzymes cystathionine-β-synthase (CBS) and cystathionine-γ-lyase (CSE). The contractions of proximal colonic smooth muscle were studied in an organ bath system. The whole-cell patch-clamp technique was used to record both L-type calcium currents (ICa,L) and BKCa currents in colonic smooth muscle cells (SMCs) isolated from male Wistar rats.

resultsImmunohistochemistry revealed the presence of CBS and CSE in mucosa, smooth muscle cells and myenteric neurons. The H2S donor NaHS inhibited spontaneous contractions of the longitudinal muscle and circular muscle strips in a dose-dependent manner, and the inhibitory effects were not blocked by tetrodotoxin. NaHS inhibited the peak ICa,L in colonic SMCs at a membrane potential of 0 mV. The current-voltage (I-V) relationship of L-type calcium channels was modified by NaHS, and the peak of the I-V curve was shifted to the right. NaHS (200 μΜ) evoked a significant rightward shift of the steady-state activation curve and inhibited the inactivation of L-type calcium channels. Furthermore, NaHS reversibly decreased the peak ICa,L in a dose-dependent manner. Likewise, BKCa channels were significantly inhibited by NaHS, and the addition of NaHS caused a time- and dose-dependent reduction in the BKCa current.

conclusionThe relaxant effect of H2S on colonic muscle strips may be associated with the direct inhibition of H2S on L-type calcium channels. H2S may be involved in the regulation of calcium homeostasis in colonic SMCs of rat colon.

Indexed as

AnimalsCalcium Channel BlockersCalcium Channels, L-TypeColonCystathionine beta-SynthaseCystathionine gamma-LyaseDose-Response Relationship, DrugGastrointestinal MotilityHydrogen SulfideLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsMaleMuscle ContractionMyocytes, Smooth MuscleRatsCalcium Channel BlockersCalcium Channels, L-TypeCystathionine beta-SynthaseCystathionine gamma-LyaseHydrogen SulfideLarge-Conductance Calcium-Activated Potassium Channel alpha Subunits

Identifiers

PMID25811907
PMCPMC4374679
OpenAlexW2046480815

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.