Evidence map›Paper›PMID 31013259›Full record

ArticleJCI insight2019

Activation of the calcium sensing receptor attenuates TRPV6-dependent intestinal calcium absorption.

Justin J Lee, Xiong Liu, Debbie O'Neill, Megan R Beggs, Petra Weissgerber, Veit Flockerzi, Xing-Zhen Chen, Henrik Dimke, R Todd Alexander

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

25 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
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  7. Calcium-Sensing Receptor in the Thick Ascending Limb and Renal Response to Hypercalcemia.Journal of the American Society of Nephrology : JASN · 2025
    Article
  8. Review
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  11. Review
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  16. Regulation of 1 and 24 hydroxylation of vitamin D metabolites in the proximal tubule.Experimental biology and medicine (Maywood, N.J.) · 2022
    Review
  17. Review
  18. Article
  19. Review
  20. Activation of the calcium sensing receptor increases claudin-14 expression via a PLC -p38-Sp1 pathway.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    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

9 authors at 3 institutions in 3 countries.

Justin J LeeDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
Xiong LiuDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
Debbie O'NeillDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
Megan R BeggsDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
Petra WeissgerberExperimentelle und Klinische Pharmakologie und Toxikologie, Saarland University, Hamburg, Germany.
Veit FlockerziExperimentelle und Klinische Pharmakologie und Toxikologie, Saarland University, Hamburg, Germany.
Xing-Zhen ChenDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
Henrik DimkeDepartment of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.
R Todd AlexanderDepartment of Physiology, University of Alberta, Edmonton, Alberta, Canada.
University of Alberta · CAGesellschaft für Klinische Forschung · DEUniversity of Southern Denmark · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plasma calcium (Ca2+) is maintained by amending the release of parathyroid hormone and through direct effects of the Ca2+ sensing receptor (CaSR) in the renal tubule. Combined, these mechanisms alter intestinal Ca2+ absorption by modulating 1,25-dihydroxy vitamin D3 production, bone resorption, and renal Ca2+ excretion. The CaSR is a therapeutic target in the treatment of secondary hyperparathyroidism and hypocalcemia a common complication of calcimimetic therapy. The CaSR is also expressed in intestinal epithelium, however, a direct role in regulating local intestinal Ca2+ absorption is unknown. Chronic CaSR activation decreased expression of genes involved in Ca2+ absorption. In Ussing chambers, increasing extracellular Ca2+ or basolateral application of the calcimimetic cinacalcet decreased net Ca2+ absorption across intestinal preparations acutely. Conversely, Ca2+ absorption increased with decreasing extracellular Ca2+ concentration. These responses were absent in mice expressing a non-functional TRPV6, TRPV6D541A. Cinacalcet also attenuated Ca2+ fluxes through TRPV6 in Xenopus oocytes when co-expressed with the CaSR. Moreover, the phospholipase C inhibitor, U73122, prevented cinacalcet-mediated inhibition of Ca2+ flux. These results reveal a regulatory pathway whereby activation of the CaSR in the basolateral membrane of the intestine directly attenuates local Ca2+ absorption via TRPV6 to prevent hypercalcemia and help explain how calcimimetics induce hypocalcemia.

Indexed as

AnimalsCalcimimetic AgentsCalciumCalcium ChannelsCinacalcetDisease Models, AnimalEstrenesFemaleGene Knock-In TechniquesHumansHypercalcemiaHyperparathyroidism, SecondaryHypocalcemiaIntestinal AbsorptionIntestinal MucosaKidney Tubules1-(6-((3-methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl)-1H-pyrrole-2,5-dioneCalcimimetic AgentsCalciumCalcium ChannelsCinacalcetEstrenesParathyroid HormonePhosphodiesterase InhibitorsPyrrolidinonesReceptors, Calcium-SensingTrpv6 protein, mouseTRPV Cation ChannelsType C PhospholipasesCalciumCalcium channelsGastroenterologyNephrology

Identifiers

PMID31013259
PMCPMC6629117
OpenAlexW2941797609

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.