Evidence map›Paper›PMID 25297375›Full record

ArticleBritish journal of pharmacology2015

Urinary bladder inflammation induces changes in urothelial nerve growth factor and TRPV1 channels.

A Coelho, A S Wolf-Johnston, S Shinde, C D Cruz, F Cruz, A Avelino, L A Birder

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

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  17. Capsaicin, Nociception and Pain.Molecules (Basel, Switzerland) · 2016
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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

7 authors at 2 institutions in 2 countries.

A CoelhoDepartment of Experimental Biology, Faculty of Medicine, University of Porto, Porto, Portugal; Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.
A S Wolf-Johnston
S Shinde
C D Cruz
F Cruz
A Avelino
L A Birder
Universidade do Porto · PTHospital de São João · PT

Funding

ROLE OF NITRIC OXIDE IN INTERSTITIAL CYSTITISR01DK057284 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BIRDER, LORI A · 2000 to 2014
$4.3M
Nitric Oxide in Bladder Neural-Epithelial SignalingR37DK054824 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BIRDER, LORI A · 2007 to 2016
$3.0M
NIDDK NIH HHS R01 DK057284NIDDK NIH HHS R01 DK57284NIDDK NIH HHS R37 DK054824NIDDK NIH HHS R37 DK54824
6 · The paper itself

Abstract

background and purposeThe urinary bladder urothelium expresses various receptors and in response to chemical and mechanical stimuli releases mediators, thereby modulating bladder sensory pathways. Transient receptor potential vanilloid 1 (TRPV1) ion channels and nerve growth factor (NGF) in those cells are implicated in this modulatory effect and play a role in sensitizing pain-related afferent pathways during inflammation. In this study, we investigated the interaction between NGF and TRPV1 channels in urothelial cells. EXPERIMENTAL APPROACH: Urothelial cells from female Sprague-Dawley rat bladders were cultured to quantify membrane expression of TRPV1 channels and capsaicin-induced ATP release in the presence of NGF alone or with TrKA or PI3K inhibitors. Pain scores from rats with cyclophosphamide (CYP)-induced bladder inflammation were assessed after treatment with a TrkA antagonist. Bladders (from control and CYP rats) were collected and analysed for NGF content and TRPV1 channel expression. KEY

resultsCultured cells responded to NGF with increased TRPV1 channel expression in the cell membrane and increased release of ATP. Both responses were blocked by either a TrkA antagonist or a PI3K inhibitor. Treatment in vivo with the TrkA antagonist alleviated pain symptoms and reduced CYP-induced NGF overexpression in the mucosa. Furthermore, in urothelial cells from animals with bladder inflammation, expression of TRPV1 channels in the membrane was significantly increased. CONCLUSIONS AND IMPLICATIONS: During bladder inflammation, increased production of NGF in urothelial cells induced increased expression and activity of TRPV1 channels in the cell membrane. This effect was primarily mediated by the PI3K pathway.

Indexed as

Adenosine TriphosphateAnimalsCapsaicinCell MembraneCells, CulturedCyclophosphamideCystitisFemaleNerve Growth FactorPainPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsRats, Sprague-DawleyReceptor, trkATRPV Cation ChannelsUrotheliumAdenosine TriphosphateCapsaicinCyclophosphamideNerve Growth FactorPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsReceptor, trkATrpv1 protein, ratTRPV Cation Channels

Identifiers

PMID25297375
PMCPMC4376449
OpenAlexW2115765337

What OpenQuestion holds

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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.