Evidence map›Paper›PMID 22589201›Full record

ArticleJournal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research2012

Villin promoter-mediated transgenic expression of transient receptor potential cation channel, subfamily V, member 6 (TRPV6) increases intestinal calcium absorption in wild-type and vitamin D receptor knockout mice.

Min Cui, Qiang Li, Robert Johnson, James C Fleet

Abstract read
In one paragraph

Article in Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 74 citations in OpenAlex.

  1. Article
  2. Article
  3. Biology of calcium homeostasis regulation in intestine and kidney.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Review
  4. Review
  5. Male Lrp5A214V mice maintain high bone mass during dietary calcium restriction by altering the vitamin D endocrine system.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2024
    Article
  6. Review
  7. Mineral Supplements in Ageing.Sub-cellular biochemistry · 2024
    Review
  8. Article
  9. Review
  10. Review
  11. Vitamin D and Gut Health.Advances in experimental medicine and biology · 2022
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Vitamin D and the intestine: Review and update.The Journal of steroid biochemistry and molecular biology · 2020
    Review
  17. Article
  18. Article
  19. Review
  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 2 institutions in 1 country.

Min CuiDepartment of Nutrition Science, Purdue University, West Lafayette, IN 47907-2059, USA.
Qiang Li
Robert Johnson
James C Fleet
Purdue University West Lafayette · USDepartment of Embryology · US

Funding

ROLE OF VDR LEVEL IN VITAMIN D-MEDIATED CA ABSORPTIONR01DK054111 · NIDDK · UNIVERSITY OF NORTH CAROLINA GREENSBORO · PI FLEET, JAMES C. · 1997 to 2012
$3.2M
NIDDK NIH HHS DK054111NIDDK NIH HHS R01 DK054111
6 · The paper itself

Abstract

Transient receptor potential cation channel, subfamily V, member 6 (TRPV6) is an apical membrane calcium (Ca) channel in the small intestine proposed to be essential for vitamin D-regulated intestinal Ca absorption. Recent studies have challenged the proposed role for TRPV6 in Ca absorption. We directly tested intestinal TRPV6 function in Ca and bone metabolism in wild-type (WT) and vitamin D receptor knockout (VDRKO) mice. TRPV6 transgenic mice (TG) were made with intestinal epithelium-specific expression of a 3X Flag-tagged human TRPV6 protein. TG and VDRKO mice were crossed to make TG-VDRKO mice. Ca and bone metabolism was examined in WT, TG, VDRKO, and TG-VDRKO mice. TG mice developed hypercalcemia and soft tissue calcification on a chow diet. In TG mice fed a 0.25% Ca diet, Ca absorption was more than three-fold higher and femur bone mineral density (BMD) was 26% higher than WT. Renal 1α hydroxylase (CYP27B1) mRNA and intestinal expression of the natural mouse TRPV6 gene were reduced to <10% of WT but small intestine calbindin-D(9k) expression was elevated >15 times in TG mice. TG-VDRKO mice had high Ca absorption that prevented the low serum Ca, high renal CYP27B1 mRNA, low BMD, and abnormal bone microarchitecture seen in VDRKO mice. In addition, small intestinal calbindin D(9K) mRNA and protein levels were elevated in TG-VDRKO. Transgenic TRPV6 expression in intestine is sufficient to increase Ca absorption and bone density, even in VDRKO mice. VDR-independent upregulation of intestinal calbindin D(9k) in TG-VDRKO suggests this protein may buffer intracellular Ca during Ca absorption. © 2012 American Society for Bone and Mineral Research.

Indexed as

Intestinal AbsorptionAnimalsBone and BonesCaco-2 CellsCalbindinsCalciumCalcium ChannelsGene Expression RegulationHumansIntestinal MucosaKidneyMiceMice, KnockoutMicrofilament ProteinsOrgan SpecificityPhenotypeCalbindinsCalciumCalcium ChannelsMicrofilament ProteinsReceptors, CalcitriolS100 Calcium Binding Protein GTRPV6 protein, humanTRPV Cation Channelsvillin

Identifiers

PMID22589201
PMCPMC3430830
OpenAlexW1979518977

What OpenQuestion holds

Textmetadata
LicenceTDM
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.