Evidence map›Paper›PMID 20346049›Full record

ArticleBJU international2010

Expression of E-series prostaglandin (EP) receptors and urodynamic effects of an EP4 receptor antagonist on cyclophosphamide-induced overactive bladder in rats.

Yao-Chi Chuang, Naoki Yoshimura, Chao-Cheng Huang, Moya Wu, Pradeep Tyagi, Michael B Chancellor

Open access · bronzeAbstract read
In one paragraph

Article in BJU international, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

11 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Review
  3. Suppression of Inflammatory and Fibrotic Signals by Cinnamon (Evidence-based complementary and alternative medicine : eCAM · 2021
    Article
  4. Article
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  6. Article
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  10. Review
  11. 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 4 institutions in 2 countries.

Yao-Chi ChuangDepartment of Urology, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan. chuang82@ms26.hinet.net
Naoki Yoshimura
Chao-Cheng Huang
Moya Wu
Pradeep Tyagi
Michael B Chancellor
Beaumont Hospital, Royal Oak · USChang Gung University · TWKaohsiung Chang Gung Memorial Hospital · TWUniversity of Pittsburgh · US

Funding

AFFERENT PLASTICITY UNDERLYING URETHRAL AND PELVIC PAINR01DK057267 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YOSHIMURA, NAOKI · 1999 to 2010
$1.8M
Afferent modulation in bladder dysfunctionR01DK068557 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI YOSHIMURA, NAOKI · 2004 to 2007
$1.1M
University of Pittsburgh Planning Center for Benign Prostate Hyperplasia ResearchP20DK090919 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WANG, ZHOU · 2010 to 2012
$547k
NIDDK NIH HHS P20 DK090919NIDDK NIH HHS R01 DK057267NIDDK NIH HHS R01 DK068557
6 · The paper itself

Abstract

objectiveTo investigate the expression of four subtypes of E-series prostaglandin (EP(1) -EP(4) ) receptors and the urodynamic effects of an EP(4) receptor antagonist (AH23848) in cyclophosphamide (CYP)-induced overactive bladder (OAB) in rats, as intravesical prostaglandin E(2) (PGE(2) ) induces OAB via activation of EP receptors and sensitization of afferent nerves. MATERIALS AND

methodsExperimental and control rats were injected with CYP (200 mg/kg, intraperitoneally) or saline, respectively. Continuous cystometrograms (CMGs) were performed 48 h after CYP or saline injection under urethane anaesthesia. AH23848 was given intravenously at doses of 0.01 and 0.1 mg/kg. The bladder was then harvested for histology. Some bladders were harvested for analysis of EP receptors expression by Western blotting without a CMG study. CMG variables (baseline pressure; intercontraction interval [ICI], pressure threshold [PT], contraction amplitude) and histological changes were measured.

resultsCYP-induced up-regulation of EP(4) receptor (100% increase) accompanied by detrusor overactivity (ICI 70.5% decrease; PT, 67.7% increase). However, CYP down-regulated EP(1) receptor expression (51.9% decrease), but had no significant effects on the EP(2) and EP(3) receptors. AH23848 significantly extended the ICI in CYP-treated rats but it had no effects on other urodynamic variables or in control rats.

conclusionsModulation of EP receptors plays a role in CYP-induced OAB. Antagonists to the EP(4) receptor may be a new target for treatment of patients with OAB.

Indexed as

AnimalsBiphenyl CompoundsBlotting, WesternCyclophosphamideFemaleImmunohistochemistryPhotomicrographyRatsRats, Sprague-DawleyReceptors, Prostaglandin EReceptors, Prostaglandin E, EP4 SubtypeUp-RegulationUrinary Bladder, OveractiveUrodynamicsAH 23848Biphenyl CompoundsCyclophosphamideReceptors, Prostaglandin EReceptors, Prostaglandin E, EP4 Subtype

Identifiers

PMID20346049
PMCPMC3102303
OpenAlexW1483959806

What OpenQuestion holds

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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.