Evidence map›Paper›PMID 21245988›Full record

ArticleWorld journal of gastroenterology2011

Switching-on of serotonergic calcium signaling in activated hepatic stellate cells.

Kyu-Sang Park, Pyo-Jin Sin, Dong Hyeon Lee, Seung-Kuy Cha, Min-Jeong Kim, Na-Hyun Kim, Soon-Koo Baik, Seong-Woo Jeong, In Deok Kong

Open access · hybridAbstract read
In one paragraph

Article in World journal of gastroenterology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.5field-weighted citation impact, top 36% 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

10 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Biology of portal hypertension.Hepatology international · 2018
    Review
  9. Calcium signaling in the liver.Comprehensive Physiology · 2013
    Review
  10. 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

9 authors at 1 institution in 1 country.

Kyu-Sang ParkDepartment of Physiology and Institute of Lifelong Health, Yonsei University Wonju College of Medicine, Wonju, Gangwon-Do 220-701, South Korea.
Pyo-Jin Sin
Dong Hyeon Lee
Seung-Kuy Cha
Min-Jeong Kim
Na-Hyun Kim
Soon-Koo Baik
Seong-Woo Jeong
In Deok Kong
Yonsei University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate serotonergic Ca²+ signaling and the expression of 5-hydroxytryptamine (5-HT) receptors, as well as Ca²+ transporting proteins, in hepatic stellate cells (HSCs).

methodsThe intracellular Ca²+ concentration [Ca²+](i) of isolated rat HSCs was measured with a fluorescence microscopic imaging system. Quantitative PCR was performed to determine the transcriptional levels of 5-HT receptors and endoplasmic reticulum (ER) proteins involved in Ca²+ storage and release in cultured rat HSCs.

resultsDistinct from quiescent cells, activated HSCs exhibited [Ca²+](i) transients following treatment with 5-HT, which was abolished by U-73122, a phospholipase C inhibitor. Upregulation of 5-HT(2A) and 5-HT(2B) receptors, but not 5-HT₃, was prominent during trans-differentiation of HSCs. Pretreatment with ritanserin, a 5-HT₂ antagonist, inhibited [Ca²+](i) changes upon application of 5-HT. Expression of type 1 inositol-5'-triphosphate receptor and type 2 sarcoplasmic/endoplasmic reticulum Ca²+ ATPase were also increased during activation of HSCs and serve as the major isotypes for ER Ca²+ storage and release in activated HSCs. Ca²+ binding chaperone proteins of the ER, including calreticulin, calnexin and calsequestrin, were up-regulated following activation of HSCs.

conclusionThe appearance of 5-HT-induced [Ca²+](i) response accompanied by upregulation of metabotropic 5-HT₂ receptors and Ca²+ transporting/chaperone ER proteins may participate in the activating process of HSCs.

Indexed as

AnimalsCalciumCalcium SignalingEndoplasmic ReticulumHepatic Stellate CellsImmunohistochemistryInositol 1,4,5-Trisphosphate ReceptorsMaleMicroscopy, FluorescenceProtein BindingRatsRats, Sprague-DawleyReceptors, SerotoninSerotoninUp-RegulationCalciumInositol 1,4,5-Trisphosphate ReceptorsReceptors, SerotoninSerotonin5-hydroxytryptamineEndoplasmic reticulum chaperoneHepatic stellate cellsInositol-5’-triphosphate receptorIntracellular Ca2+ transientSarcoplasmic/endoplasmic reticulum Ca2+ ATPase

Identifiers

PMID21245988
PMCPMC3020369
OpenAlexW2007685844

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.