Evidence map›Paper›PMID 16736152›Full record

ArticleNaunyn-Schmiedeberg's archives of pharmacology2006

Effects of gender, age and hypertension on beta-adrenergic receptor function in rat urinary bladder.

Elfaridah P Frazier, Tim Schneider, Martin C Michel

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Naunyn-Schmiedeberg's archives of pharmacology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.5field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 57 citations in OpenAlex.

  1. Age-dependent effects of the βPflugers Archiv : European journal of physiology · 2024
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Cardiac βBritish journal of pharmacology · 2019
    Review
  8. The aging bladder insights from animal models.Asian journal of urology · 2018
    Review
  9. Article
  10. Review
  11. Article
  12. Nerve regeneration restores supraspinal control of bladder function after complete spinal cord injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Gastrodia elata decreases isoprenaline potency and enhances spontaneous phasic activity in the rat detrusor.International journal of physiology, pathophysiology and pharmacology · 2011
    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

3 authors at 2 institutions in 2 countries.

Elfaridah P FrazierDepartment of Pharmacology and Pharmacotherapy, University of Amsterdam, Amsterdam, The Netherlands.
Tim Schneider
Martin C Michel
University of Amsterdam · NLUniversity of Duisburg-Essen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

beta-Adrenoceptors mediate urinary bladder relaxation, and gender, age and hypertension have been linked to bladder dysfunction. Therefore, we have studied whether any of these factors affects the ability of beta-adrenoceptor agonists to relax rat bladder detrusor muscle in vitro. For this purpose we have compared male and female Wistar rats, young and old male Wistar rats, and male normotensive and spontaneously hypertensive rats (SHR). Comparisons were done using KCl-precontracted bladder strips (length about 15-20 mm) and the endogenous agonist noradrenaline, the synthetic non-subtype-selective agonist isoprenaline, and the prototypical beta(3)-adrenoceptor agonists BRL 37,344 and CGP 12,177. While all agonists yielded numerically weaker relaxation in female as compared to male rats (for example for noradrenaline E(max) 40+/-4% vs 53+/-6% relaxation, pEC(50) 5.41+/-0.13 vs 5.60+/-0.14), this difference reached statistical significance only for the weak partial agonist CGP 12,177. Responses to all agonists were attenuated in old as compared to young rats, largely due to a reduced maximum effect, although the difference did not reach statistical significance for isoprenaline. The maximum relaxation responses to noradrenaline and isoprenaline were significantly lower in SHR than in normotensive rats, but both strains exhibited similar responses to the partial agonist BRL 37,344. We conclude that factors associated with bladder dysfunction, such as gender, age and hypertension, can be associated with impaired beta-adrenoceptor-mediated bladder relaxation. However, these alterations are not always consistent across various agonists, and the extent of the differences can be small. Therefore, we propose that beta-adrenoceptor dysfunction may contribute to the pathophysiology of such conditions, but is unlikely to be the only or even the major factor in this regard. We speculate that beta-adrenoceptor agonists may be effective in the treatment of bladder dysfunction under all of these conditions.

Indexed as

Adrenergic beta-3 Receptor AgonistsAdrenergic beta-AgonistsAge FactorsAnimalsEthanolaminesFemaleHypertensionIn Vitro TechniquesIsoproterenolMaleMuscle RelaxationMuscle, SmoothNorepinephrinePropanolaminesRatsRats, Inbred SHRAdrenergic beta-3 Receptor AgonistsAdrenergic beta-AgonistsBRL 37344CGP 12177EthanolaminesIsoproterenolNorepinephrinePropanolaminesReceptors, Adrenergic, beta

Identifiers

PMID16736152
OpenAlexW2133352920

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.