Evidence map›Paper›PMID 26446924›Full record

ArticleGut and liver2016

Tryptase and Protease-Activated Receptor 2 Expression Levels in Irritable Bowel Syndrome.

Wen-Jing Liang, Guo Zhang, He-Sheng Luo, Lie-Xin Liang, Dan Huang, Fa-Can Zhang

Open access · diamondAbstract read
In one paragraph

Article in Gut and liver, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 2 pooled it
2.4field-weighted citation impact, top 12% 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

31 citing papers in PubMed, 2 syntheses or guidelines pooled it, 48 citations in OpenAlex.

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    Article
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  19. The enteric nervous system in gastrointestinal disease etiology.Cellular and molecular life sciences : CMLS · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Wen-Jing LiangDepartment of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
Guo ZhangDepartment of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
He-Sheng LuoDepartment of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Lie-Xin LiangDepartment of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
Dan HuangDepartment of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
Fa-Can ZhangDepartment of Gastroenterology, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
The People's Hospital of Guangxi Zhuang Autonomous Region · CNRenmin Hospital of Wuhan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsPrevious studies have revealed that mast cells (MCs) may activate the protease-activated receptors and release of neuropeptides involved in the pathogenesis of irritable bowel syndrome (IBS). The levels of proteaseactivated receptor 2 (PAR-2) and tryptase can contribute to understanding the pathogenesis of IBS.

methodsColonoscopic biopsies were performed of 38 subjects (20 with IBSdiarrhea [IBS-D], eight with IBS-constipation [IBS-C], and 10 healthy volunteers). The mRNA and protein levels of tryptase and PAR-2 were assessed by real-time PCR and Western blot. The levels of vasoactive intestinal peptide (VIP), substance P (SP), and calcitonin gene-related peptide (CGRP) were measured by immunohistochemistry, and MCs were counted by toluidine blue staining.

resultsSignificant increases in the mRNA expression of tryptase (p<0.05, IBS-D, IBS-C vs control) and PAR-2 (p<0.05, IBS-D, IBS-C vs control) and in the tryptase protein level (p<0.05, IBS-D, IBS-C vs control) were detected in IBS. Elevations of MCs, CGRP, VIP and SP (p<0.05, IBS-D vs control) were observed for IBS-D only.

conclusionsTryptase levels may upregulate the function of PAR- 2, resulting in the release of neuropeptide and they were correlated with clinical symptoms associated with IBS.

Indexed as

Abdominal PainAdultCalcitonin Gene-Related PeptideCase-Control StudiesColonFemaleHumansIrritable Bowel SyndromeMaleMast CellsMiddle AgedReceptor, PAR-2RNA, MessengerSubstance PTryptasesVasoactive Intestinal PeptideCalcitonin Gene-Related PeptideReceptor, PAR-2RNA, MessengerSubstance PTryptasesVasoactive Intestinal PeptideInflammationIrritable bowel syndromePAR-2Tryptases

Identifiers

PMID26446924
PMCPMC4849691
OpenAlexW2289380928

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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.