Evidence map›Paper›PMID 12970074›Full record

ArticleBritish journal of pharmacology2003

Protein kinase C-mediated Ca2+ entry in HEK 293 cells transiently expressing human TRPV4.

Feng Xu, Eisaku Satoh, Toshihiko Iijima

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in British journal of pharmacology, 2003. 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
1.8field-weighted citation impact, top 16% 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, 75 citations in OpenAlex.

  1. Article
  2. Review
  3. The Variety of Mechanosensitive Ion Channels in Retinal Neurons.International journal of molecular sciences · 2024
    Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. TRP channels and analgesia.Life sciences · 2013
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  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

3 authors at 1 institution in 1 country.

Feng XuDepartment of Pharmacology, Akita University School of Medicine, 1-1-1 Hondoh, Akita 010-8543, Japan.
Eisaku Satoh
Toshihiko Iijima
Akita University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. We investigated whether protein kinase C (PKC) activation stimulates Ca2+ entry in HEK 293 cells transfected with human TRPV4 cDNA and loaded with fura-2. 2. Phorbol 12-myristate 13-acetate (PMA), a PKC-activating phorbol ester, increased the intracellular Ca2+ concentration ([Ca2+]i) in a dose-dependent manner, with an EC50 value of 11.7 nm. Exposure to a hypotonic solution (HTS) after PMA further increased [Ca2+]i. Two other PKC-activating phorbol esters, phorbol 12,13-didecanoate (PDD) and phorbol 12,13-dibutyrate, also caused [Ca2+]i to increase. 3. The inactive isomer 4alpha-PMA was less effective and the peak [Ca2+]i increase was significantly smaller than that induced by PMA. In contrast, 4alpha-PDD produced a monophasic or biphasic [Ca2+]i increase with a different latency, while 4alpha-phorbol had no effect. 4. The PMA-induced [Ca2+]i increase was abolished by prior exposure to bisindolylmaleimide (BIM), a PKC-specific inhibitor, and suppressed by the nonspecific PKC inhibitor 1-(5-isoquinolinesulphonyl)-2-methylpiperazine. The [Ca2+]i increase induced by 4alpha-PMA, 4alpha-PDD or HTS was not significantly affected by BIM. 5. These results suggest that both PKC-dependent and -independent mechanisms are involved in the phorbol ester-induced activation of TRPV4, and the PKC-independent pathway is predominant in HTS-induced Ca2+ entry.

Indexed as

CalciumCation Transport ProteinsCell LineDose-Response Relationship, DrugEnzyme ActivationEnzyme InhibitorsGene ExpressionHumansHypotonic SolutionsIndolesIon ChannelsMaleimidesPhorbol 12,13-DibutyratePhorbol EstersProtein Kinase CTetradecanoylphorbol AcetatebisindolylmaleimideCalciumCation Transport ProteinsEnzyme InhibitorsHypotonic SolutionsIndolesIon ChannelsMaleimidesPhorbol 12,13-Dibutyratephorbol-12,13-didecanoatePhorbol EstersProtein Kinase CTetradecanoylphorbol AcetateTRPV4 protein, humanTRPV Cation Channels

Identifiers

PMID12970074
PMCPMC1574039
OpenAlexW1963645455

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.