Evidence map›Paper›PMID 20497558›Full record

ArticleBMC urology2010

Removal of urothelium affects bladder contractility and release of ATP but not release of NO in rat urinary bladder.

Alvaro Munoz, David A Gangitano, Christopher P Smith, Timothy B Boone, George T Somogyi

Open access · goldAbstract read
In one paragraph

Article in BMC urology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
4.8field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  14. The Role of the Mucosa in Normal and Abnormal Bladder Function.Basic & clinical pharmacology & toxicology · 2016
    Review
  15. Article
  16. Article
  17. Article
  18. Signalling molecules in the urothelium.BioMed research international · 2014
    Review
  19. Article
  20. 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

5 authors at 2 institutions in 1 country.

Alvaro MunozScott Department of Urology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas, USA.
David A Gangitano
Christopher P Smith
Timothy B Boone
George T Somogyi
Baylor College of Medicine · USMethodist Hospital · US

Funding

Nicotinic-Purinergic Modulation of Bladder ContractionR01DK069988 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI SOMOGYI, GEORGE T · 2005 to 2009
$1.5M
NIDDK NIH HHS R01-DK-069988
6 · The paper itself

Abstract

backgroundThe objective of our work was to investigate both the contractile function and the release of ATP and NO from strips of bladder tissue after removal of the urothelium.

methodsThe method of removal was a gentle swabbing motion rather than a sharp surgical cutting to separate the urothelium from the smooth muscle. The contractile response and ATP and NO release were measured in intact as well as on swabbed preparations. The removal of the urothelial layer was affirmed microscopically.

resultsAfter the swabbing, the smaller contractions were evoked by electrical as well as by chemical stimulation (50 microM carbachol or 50 microM alpha, beta meATP). Electrical stimulation, carbachol and substance P (5 microM) evoked lower release of ATP in the swabbed strips than in intact strips. Although release of NO evoked by electrical stimulation or substance P was not changed, release of NO evoked by carbachol was significantly less in the swabbed preparations.

conclusionSince swabbing removes only the urothelium, the presence of the suburothelial layer may explain the difference between our findings and those of others who found an increase in contractility. Evoked release of ATP is reduced in swabbed strips, indicating that ATP derives solely from the urothelium. On the other hand, electrical stimulation and substance P evoke identical degrees of NO release in both intact and swabbed preparations, suggesting that NO can be released from the suburothelium. Conversely, carbachol-induced release of NO is lower in swabbed strips, implying that the cholinergic receptors (muscarinic or nicotinic) are located in the upper layer of the urothelium.

Indexed as

Adenosine TriphosphateAnimalsFemaleMuscle ContractionMuscle, SmoothNitric OxideRatsRats, Sprague-DawleyUrinary BladderUrotheliumAdenosine TriphosphateNitric Oxide

Identifiers

PMID20497558
PMCPMC2889947
OpenAlexW2161777760

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.