Evidence map›Paper›PMID 22038643›Full record

ArticleNeurourology and urodynamics2012

Effects of TRPV4 cation channel activation on the primary bladder afferent activities of the rat.

Naoki Aizawa, Jean-Jacques Wyndaele, Yukio Homma, Yasuhiko Igawa

Abstract read
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In one paragraph

Article in Neurourology and urodynamics, 2012. 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
2.7field-weighted citation impact, top 11% 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, 68 citations in OpenAlex.

  1. Article
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  5. Review
  6. Review
  7. The TRPM8 channel as a potential therapeutic target for bladder hypersensitive disorders.Journal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi · 2022
    Review
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  17. Review
  18. Review
  19. How does rhinovirus cause the common cold cough?BMJ open respiratory research · 2016
    Article
  20. Neurogenic Causes of Detrusor Underactivity.Current bladder dysfunction reports · 2015
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

Naoki AizawaDepartment of Continence Medicine, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.
Jean-Jacques Wyndaele
Yukio Homma
Yasuhiko Igawa
The University of Tokyo · JPUniversity of Antwerp · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsTransient receptor potential vanilloid 4 (TRPV4) may affect afferent pathways innervating the bladder. We investigated the effects of GSK1016790A (GSK) and RN1734, a TRPV4 agonist and antagonist, respectively, and P2X-purinoceptor antagonists (TNP-ATP and PPADS) on cystometry (CMG), and the effect of GSK on single afferent fiber activities (SAAs) of the rat bladder and its relationship with capsaicin (Cap)-sensitivity.

methodsConscious female Sprague-Dawley rats were used for CMG measurements. In SAA measurements, under urethane anesthesia, SAA was identified by electrical stimulation of the pelvic nerve and by bladder distention. Cystometric parameters were measured before and after intravesical drug instillation. In SAA measurements, response with saline instillation served as baseline. Then, GSK was instilled three times, and finally Cap was instilled to investigate the relationship with Cap-sensitivity.

resultsIntravesical GSK-instillation transiently decreased bladder capacity and voided volume, which were counteracted by RN1734, TNP-ATP, and PPADS. In SAA measurements, Aδ-fibers (n = 7) were not affected by either GSK or Cap. Based on the Cap-sensitivity, C-fibers could be divided into two subtypes: Cap-insensitive (n = 14) and Cap-sensitive (n = 8). In the Cap-insensitive C-fibers, GSK significantly increased the SAAs during the first instillation, but the increase attenuated with time, whereas GSK did not significantly affect the Cap-sensitive C-fibers.

conclusionsThe present results suggest that activation of TRPV4 in the bladder, probably urothelium, facilitates the micturition reflex by activation of the mechanosensitive, Cap-insensitive C-fibers of the primary bladder afferents in rats.

Indexed as

AnimalsCapsaicinElectric StimulationFemaleLeucineModels, AnimalNerve Fibers, UnmyelinatedNeurons, AfferentPurinergic P2X Receptor AntagonistsRatsRats, Sprague-DawleySulfonamidesTRPV Cation ChannelsUrinary BladderUrinationCapsaicinLeucineN-(1-((4-(2-(((2,4-dichlorophenyl)sulfonyl)amino)-3-hydroxypropanoyl)-1-piperazinyl)carbonyl)-3-methylbutyl)-1-benzothiophene-2-carboxamidePurinergic P2X Receptor AntagonistsRN 1734SulfonamidesTrpv4 protein, ratTRPV Cation Channels

Identifiers

PMID22038643
OpenAlexW1964852121

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.