Evidence map›Paper›PMID 10433503›Full record

ArticleBritish journal of pharmacology1999

Characterization of beta-adrenoceptor mediated smooth muscle relaxation and the detection of mRNA for beta1-, beta2- and beta3-adrenoceptors in rat ileum.

S J Roberts, M Papaioannou, B A Evans, R J Summers

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

27 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
  2. Review
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  4. Review
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  6. βBritish journal of pharmacology · 2019
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  7. Safety and Efficacy ofEvidence-based complementary and alternative medicine : eCAM · 2018
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  12. Esophagus motility in overt hypothyroidism.Journal of endocrinological investigation · 2014
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  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. β(3) Receptors: Role in Cardiometabolic Disorders.Therapeutic advances in endocrinology and metabolism · 2011
    Article
  19. Tissue functions mediated by beta(3)-adrenoceptors-findings and challenges.Naunyn-Schmiedeberg's archives of pharmacology · 2010
    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

4 authors at 2 institutions in 1 country.

S J RobertsDepartment of Pharmacology, University of Melbourne, Parkville, Victoria, Australia.
M Papaioannou
B A Evans
R J Summers
Monash University · AUUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. Functional and molecular approaches were used to characterize the beta-AR subtypes mediating relaxation of rat ileal smooth muscle. 2. In functional studies, (-)-isoprenaline relaxation was unchanged by CGP20712A (beta1-AR antagonist) or ICI118551 (beta2-AR antagonist) but shifted by propranolol (pKB=6.69). (+/-)-Cyanopindolol, CGP12177 and ICID7114 did not cause relaxation but antagonized (-)-isoprenaline relaxation. 3. BRL37344 (beta3-AR agonist) caused biphasic relaxation. The high affinity component was shifted with low affinity by propranolol, (+/-)-cyanopindolol, tertatolol and alprenolol. CL316243 (beta3-AR agonist) relaxation was unaffected by CGP20712A or ICI118551 but blocked by SR58894A (beta3-AR antagonist; pA2 = 7.80). Enhanced relaxation after exposure to forskolin and pertussis toxin showed that beta3-AR relaxation can be altered by manipulation of components of the adenylate cyclase signalling pathway. 4. The beta-AR agonist RO363 relaxed the ileum (pEC50=6.18) and was blocked by CGP20712A. Relaxation by the beta2-AR agonist zinterol (pEC50=5.71) was blocked by SR58894A but not by ICI118551. 5. In rat ileum, beta1-, beta2- and beta3-AR mRNA was detected. Comparison of tissues showed that beta3-AR mRNA expression was greatest in WAT>colon=ileum >cerebral cortex>soleus; beta1-AR mRNA was most abundant in cerebral cortex > WAT > ileum = colon > soleus; beta2-AR mRNA was expressed in soleus > WAT > ileum = colon > cerebral cortex. 6. These results show that beta3-ARs are the predominant beta-AR subtype mediating rat ileal relaxation while beta1-ARs may produce a small relaxation. The beta2-AR agonist zinterol produces relaxation through beta3-ARs and there was no evidence for the involvement of beta2-ARs in relaxation despite the detection of beta2-AR mRNA.

Indexed as

Adenylate Cyclase ToxinAnimalsColforsinDioxolesDose-Response Relationship, DrugEthanolaminesIleumIsoproterenolMaleMuscle RelaxationPertussis ToxinRatsRats, Sprague-DawleyReceptors, Adrenergic, betaReceptors, Adrenergic, beta-1Receptors, Adrenergic, beta-2Adenylate Cyclase ToxinBRL 37344ColforsinDioxolesdisodium (R,R)-5-(2-((2-(3-chlorophenyl)-2-hydroxyethyl)-amino)propyl)-1,3-benzodioxole-2,3-dicarboxylateEthanolaminesIsoproterenolPertussis ToxinReceptors, Adrenergic, betaReceptors, Adrenergic, beta-1Receptors, Adrenergic, beta-2Receptors, Adrenergic, beta-3RNA, MessengerVirulence Factors, Bordetella

Identifiers

PMID10433503
PMCPMC1566085
OpenAlexW2056657856

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.