Evidence map›Paper›PMID 22025666›Full record

ArticleThe Journal of physiology2011

Antagonism of the TRPv1 receptor partially corrects muscle metaboreflex overactivity in spontaneously hypertensive rats.

Masaki Mizuno, Megan N Murphy, Jere H Mitchell, Scott A Smith

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
2.1field-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

45 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
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  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Sex-dependent attenuating effects of capsaicin administration on the mechanoreflex in healthy rats.American journal of physiology. Heart and circulatory physiology · 2023
    Article
  10. Article
  11. The exercise pressor reflex: An update.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2022
    Review
  12. Gene and protein expression of dorsal root ganglion sensory receptors in normotensive and hypertensive male rats.American journal of physiology. Regulatory, integrative and comparative physiology · 2022
    Article
  13. Article
  14. Review
  15. Review
  16. Chronic ablation of TRPV1-sensitive skeletal muscle afferents attenuates the muscle metaboreflex.American journal of physiology. Regulatory, integrative and comparative physiology · 2021
    Article
  17. Article
  18. 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

4 authors at 1 institution in 1 country.

Masaki MizunoDepartment of Physical Therapy, University of Texas Southwestern Medical Center, Dallas, TX 75390-9174, USA.
Megan N Murphy
Jere H Mitchell
Scott A Smith
The University of Texas Southwestern Medical Center · US

Funding

Mechanisms of Exercise Pressor Reflex Overactivity in HypertensionR01HL088422 · NHLBI · UT SOUTHWESTERN MEDICAL CENTER · PI SMITH, SCOTT A · 2008 to 2012
$2.0M
NHLBI NIH HHS HL-088422NHLBI NIH HHS R01 HL088422
6 · The paper itself

Abstract

The circulatory response to exercise is exaggerated in hypertension potentially increasing the risk for adverse cardiovascular events. Evidence suggests the skeletal muscle metaboreflex contributes to this abnormal circulatory response. However, as the sensitivity of this reflex has been reported to be both reduced and potentiated in hypertension, its role remains controversial. In addition, the receptor mechanisms underlying muscle metaboreflex dysfunction in this disease remain undetermined. To address these issues, metaboreflex activity was assessed during 'supra-stimulation' of the reflex via ischaemic hindlimb muscle contraction. This manoeuvre evoked significantly larger increases in mean arterial pressure (MAP) and renal sympathetic nerve activity (RSNA) in spontaneously hypertensive rats (SHR) compared to normotensive Wistar-Kyoto (WKY) rats. The skeletal muscle TRPv1 receptor was evaluated as a potential mediator of this metaboreflex response as it has been shown to contribute significantly to muscle reflex activation in healthy animals. Stimulation of the TRPv1 receptor by injection of capsaicin into the arterial supply of the hindlimb evoked significantly larger elevations in MAP and RSNA in SHR compared to WKY. The pressor and sympathetic responses to ischaemic muscle contraction in WKY and SHR were attenuated by the administration of the TRPv1 receptor antagonist capsazepine with the magnitude of the capsazepine-induced reductions being greater in SHR than WKY. TRPv1 protein expression in dorsal root ganglia, but not skeletal muscle, was significantly greater in SHR than WKY. The results suggest the muscle metaboreflex is overactive in hypertension. Further, this reflex overactivity can be partially normalized by antagonizing TRPv1 receptors in skeletal muscle.

Indexed as

AnimalsBaroreflexBlood PressureCapsaicinElectric StimulationHindlimbHypertensionIschemiaKidneyMaleMuscle ContractionMuscle, SkeletalRatsRats, Inbred SHRRats, Inbred WKYSciatic NerveCapsaicincapsazepineTRPV1 receptorTRPV Cation Channels

Identifiers

PMID22025666
PMCPMC3286695
OpenAlexW2164687363

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.