Evidence map›Paper›PMID 30289450›Full record

ArticleInflammatory bowel diseases2019

Lack of Vitamin D Receptor Leads to Hyperfunction of Claudin-2 in Intestinal Inflammatory Responses.

Yong-Guo Zhang, Rong Lu, Yinglin Xia, David Zhou, Elaine Petrof, Erika C Claud, Jun Sun

Abstract read
In one paragraph

Article in Inflammatory bowel diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
2.6field-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

48 citing papers in PubMed, 68 citations in OpenAlex.

  1. Trial
  2. Role of Bile Acid Receptors in Non-Infectious Diarrhea: A Narrative Review.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Review
  3. Article
  4. In ovo injection of vitamin DPoultry science · 2026
    Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Milk andAmerican journal of physiology. Gastrointestinal and liver physiology · 2024
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review
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 4 institutions in 2 countries.

Yong-Guo ZhangDepartment of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA.
Rong LuDepartment of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA.
Yinglin XiaDepartment of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA.
David ZhouDepartment of Pathology, University of Rochester, Rochester, New York, USA.
Elaine PetrofDepartment of Medicine, GI Diseases Research Unit and Division of Infectious Diseases, Queen's University, Kingston, Ontario, Canada.
Erika C ClaudDepartment of Pediatrics and Medicine, The University of Chicago, Chicago, Illinois, USA.
Jun SunDepartment of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA.
University of Illinois Chicago · USQueen's University · CAUniversity of Chicago · USWashington University in St. Louis · US

Funding

ULTRASTRUCTURE AND CYTOMORPHOLOGY COREP30DK042086 · NIDDK · UNIVERSITY OF CHICAGO · PI LIU, CAMBRIAN YANGSHAO · 1990 to 2025
$29.8M
How Vitamin D Receptor Influences Intestinal BarriersR01DK114126 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI Jun Sun · 2018 to 2026
$3.0M
Vitamin D Receptor Regulation of Microbiota in Intestinal EpitheliaR01DK105118 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI SUN, JUN · 2016 to 2020
$1.8M
NIDDK NIH HHS P30 DK042086NIDDK NIH HHS R01 DK105118NIDDK NIH HHS R01 DK114126
6 · The paper itself

Abstract

Background: Vitamin D3 and vitamin D receptor (VDR) are involved in the pathogenesis of inflammatory bowel disease (IBD) and bacterial infection. Claudin-2 is a junction protein that mediates paracellular water transport in epithelia. Elevation of Claudin-2 is associated with active IBD. However, VDR involved in epithelial junctions under inflammation and infection remains largely unknown. We investigated the mechanisms on how VDR and Claudin-2 are related in inflamed states. Methods: Using cultured VDR-/- enteroids, human intestinal epithelial cells, VDR-/- mice with Salmonella- or DSS-colitis, and human IBD samples, we investigated the mechanisms how VDR and Claudin-2 are related in inflamed states. Results: After Salmonella infection had taken place, we observed significantly enhanced Claudin-2 and an increased bacterial invasion and translocation. A lack of VDR regulation led to a robust increase of Claudin-2 at the mRNA and protein levels post-infection. In DSS-treated VDR-/- mice, Claudin-2 was significantly increased. Location and quantification of Claudin-2 protein in the mouse colons treated with DSS also confirmed these results. Inflammatory cytokines were significantly higher in the serum and mRNA levels in intestine, which are known to increase Claudin-2. Furthermore, in inflamed intestine of ulcerative colitis patients, VDR expression was low and Claudin-2 was enhanced. Mechanistically, we identified the enhanced Claudin-2 promoter activity through the binding sites of NF-κB and STAT in inflamed VDR-/- cells. Conclusions: Our studies have identified a new role for intestinal epithelial VDR in regulating barrier functions in the context of infection and inflammation.

Indexed as

AdultAgedAged, 80 and overAnimalsCase-Control StudiesClaudin-2Cohort StudiesColitisColitis, UlcerativeEpithelial CellsFemaleFollow-Up StudiesHumansInflammationIntestinal MucosaMaleClaudin-2Receptors, Calcitriol

Identifiers

PMID30289450
PMCPMC6290786
OpenAlexW2895041287

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.