Evidence map›Paper›PMID 22000496›Full record

ArticleCell calcium2012

Pregnenolone sulphate-independent inhibition of TRPM3 channels by progesterone.

Yasser Majeed, Sarka Tumova, Ben L Green, Victoria A L Seymour, Daniel M Woods, Anil K Agarwal, Jacqueline Naylor, Shannon Jiang, Helen M Picton, Karen E Porter and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Cell calcium, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 9% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 79 citations in OpenAlex.

  1. Mechanosensitive receptors in migraine: a systematic review.The journal of headache and pain · 2024
    Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Steroid Sulfation in Neurodegenerative Diseases.Frontiers in molecular biosciences · 2022
    Review
  8. Review
  9. Partial Agonistic Actions of Sex Hormone Steroids on TRPM3 Function.International journal of molecular sciences · 2021
    Article
  10. Article
  11. Article
  12. TRPM3 in Brain (Patho)Physiology.Frontiers in cell and developmental biology · 2021
    Review
  13. Review
  14. The structural basis for an on-off switch controlling Gβγ-mediated inhibition of TRPM3 channels.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  15. Steroids and TRP Channels: A Close Relationship.International journal of molecular sciences · 2020
    Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. Identification and classification of a new TRPM3 variant (γ subtype).The journal of physiological sciences : JPS · 2019
    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

14 authors at 2 institutions in 2 countries.

Yasser MajeedMultidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, UK.
Sarka Tumova
Ben L Green
Victoria A L Seymour
Daniel M Woods
Anil K Agarwal
Jacqueline Naylor
Shannon Jiang
Helen M Picton
Karen E Porter
David J O'Regan
Katsuhiko Muraki
Colin W G Fishwick
David J Beech
University of Leeds · GBLeeds General Infirmary · GB

Funding

British Heart FoundationMedical Research Council G0800250Wellcome Trust
6 · The paper itself

Abstract

Transient Receptor Potential Melastatin 3 (TRPM3) is a widely expressed calcium-permeable non-selective cation channel that is stimulated by high concentrations of nifedipine or by physiological steroids that include pregnenolone sulphate. Here we sought to identify steroids that inhibit TRPM3. Channel activity was studied using calcium-measurement and patch-clamp techniques. Progesterone (0.01-10μM) suppressed TRPM3 activity evoked by pregnenolone sulphate. Progesterone metabolites and 17β-oestradiol were also inhibitory but the effects were relatively small. Dihydrotestosterone was an inhibitor at concentrations higher than 1μM. Corticosteroids lacked effect. Overlay assays indicated that pregnenolone sulphate, progesterone and dihydrotestosterone bound to TRPM3. In contrast to dihydrotestosterone, progesterone inhibited nifedipine-evoked TRPM3 activity or activity in the absence of an exogenous activator, suggesting a pregnenolone sulphate-independent mechanism of action. Dihydrotestosterone, like a non-steroid look-alike compound, acted as a competitive antagonist at the pregnenolone sulphate binding site. Progesterone inhibited endogenous TRPM3 in vascular smooth muscle cells. Relevance of TRPM3 or the progesterone effect to ovarian cells, which have been suggested to express TRPM3, was not identified. The data further define a chemical framework for competition with pregnenolone sulphate at TRPM3 and expand knowledge of steroid interactions with TRPM3, suggesting direct steroid binding and pregnenolone sulphate-independent inhibition by progesterone.

Indexed as

Adrenal Cortex HormonesAnimalsCalcium SignalingCattleDihydrotestosteroneEstradiolFemaleGranulosa CellsHEK293 CellsHumansIon Channel GatingMifepristoneMuscle, Smooth, VascularMyocytes, Smooth MuscleNifedipinePregnenoloneAdrenal Cortex HormonesDihydrotestosteroneEstradiolMifepristoneNifedipinePregnenolonepregnenolone sulfateProgesteroneReceptors, ProgesteroneTRPM3 protein, humanTRPM Cation Channels

Identifiers

PMID22000496
PMCPMC3275754
OpenAlexW2020761237

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.