Evidence map›Paper›PMID 11744752›Full record

ArticleThe Journal of physiology2001

Function and expression of the epithelial Ca(2+) channel family: comparison of mammalian ECaC1 and 2.

J G Hoenderop, R Vennekens, D Müller, J Prenen, G Droogmans, R J Bindels, B Nilius

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of physiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed
6.9field-weighted citation impact, top 2% 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

77 citing papers in PubMed, 233 citations in OpenAlex.

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  18. TRPV6 as A Target for Cancer Therapy.Journal of Cancer · 2020
    Review
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17 more citing papers are in PubMed but not listed here.

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

7 authors at 3 institutions in 2 countries.

J G HoenderopDepartment of Cell Physiology, Institute of Cellular Signalling, University Medical Centre Nijmegen, The Netherlands.
R Vennekens
D Müller
J Prenen
G Droogmans
R J Bindels
B Nilius
KU Leuven · BERadboud University Nijmegen · NLRadboud University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. The epithelial Ca(2+) channel (ECaC) family represents a unique group of Ca(2+)-selective channels that share limited homology to the ligand-gated capsaicin receptors, the osmolarity-sensitive channel OTRPC4, as well as the transient receptor potential family. Southern blot analysis demonstrated that this family is restricted to two members, ECaC1 and ECaC2 (also named CaT1). 2. RT-PCR analysis demonstrated that the two channels are co-expressed in calbindin-D-containing epithelia, including small intestine, pancreas and placenta, whereas kidney and brain only express ECaC1 and stomach solely ECaC2. 3. From an electrophysiological point of view, ECaC1 and ECaC2 are highly similar channels. Differences concern divalent cation permeability, the kinetics of Ca(2+)-dependent inactivation and recovery from inactivation. 4. Ruthenium red is a potent blocker of ECaC activity. Interestingly, ECaC2 has a 100-fold lower affinity for ruthenium red (IC(50) 9 +/- 1 microM) than ECaC1 (IC(50) 121 +/- 13 nM). 5. ECaCs are modulated by intracellular Mg(2+) and ATP. ECaC1 and ECaC2 activity rapidly decay in the absence of intracellular ATP. This effect is further accelerated at higher intracellular Mg(2+) concentrations. 6. In conclusion, ECaC1 and ECaC2 are homologous channels, with an almost identical pore region. They can be discriminated by their sensitivity for ruthenium red and show differences in Ca(2+)-dependent regulation.

Indexed as

Adenosine TriphosphateAmino Acid SequenceAnimalsCalciumCalcium ChannelsCations, DivalentCations, MonovalentElectric ConductivityMagnesiumMiceMolecular Sequence DataMultigene FamilyPhylogenyRuthenium RedSodiumTissue DistributionAdenosine TriphosphateCalciumCalcium ChannelsCations, DivalentCations, MonovalentMagnesiumRuthenium RedSodiumTrpv5 protein, mouseTrpv6 protein, mouseTRPV Cation Channels

Identifiers

PMID11744752
PMCPMC2278984
OpenAlexW2001536559

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.