Evidence map›Paper›PMID 21422187›Full record

ArticleInfection and immunity2011

Vitamin D-mediated induction of innate immunity in gingival epithelial cells.

Laura McMahon, Kyell Schwartz, Ozlem Yilmaz, Eleith Brown, Lisa K Ryan, Gill Diamond

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 5% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 136 citations in OpenAlex.

  1. Pooled it
  2. Relationship between vitamin D status and the vaginal microbiome during pregnancy.Journal of perinatology : official journal of the California Perinatal Association · 2019
    Trial
  3. Trial
  4. Randomized controlled trial of calcitriol in severe sepsis.American journal of respiratory and critical care medicine · 2014
    Trial
  5. Epithelial Inflammatory iNOS-Nitrate Axis EnhancesInternational journal of molecular sciences · 2026
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Vitamin DInternational journal of molecular sciences · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  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

6 authors at 3 institutions in 1 country.

Laura McMahonDepartment of Oral Biology, UMDNJ-New Jersey Dental School, Newark, NJ 07101, USA.
Kyell Schwartz
Ozlem Yilmaz
Eleith Brown
Lisa K Ryan
Gill Diamond
Rutgers, The State University of New Jersey · USRutgers New Jersey Medical SchoolUniversity of Florida · US

Funding

Modulation of epithelial cell response by P. gingivalisR01DE016593 · NIDCR · UNIVERSITY OF FLORIDA · PI YILMAZ, OZLEM · 2006 to 2016
$3.3M
Vitamin D induction of antibacterial activity in gingival cellsR21DE018781 · NIDCR · UNIV OF MED/DENT OF NJ-NJ DENTAL SCHOOL · PI DIAMOND, GILL · 2008 to 2009
$446k
NIDCR NIH HHS R01 DE016593NIDCR NIH HHS R21 DE018781NIDCR NIH HHS R21DE18781
6 · The paper itself

Abstract

Human gingival epithelial cells (GEC) produce peptides, such as β-defensins and the cathelicidin LL-37, that are both antimicrobial and that modulate the innate immune response. In myeloid and airway epithelial cells, the active form of vitamin D(3) [1,25(OH)(2)D(3)] increases the expression and antibacterial activity of LL-37. To examine the activity of vitamin D on the innate immune defense of the gingival epithelium, cultured epithelial cells were treated with either 10(-8) M 1,25(OH)(2)D(3) or ethanol for up to 24 h. A time-dependent induction of LL-37 mRNA up to 13-fold at 24 h in both standard monolayer and three-dimensional cultures was observed. Induction of the vitamin D receptor and the 1-α-hydroxylase genes was also observed. The hydroxylase was functional, as LL-37 induction was observed in response to stimulation by 25(OH)D(3). Through microarray analysis of other innate immune genes, CD14 expression increased 4-fold, and triggering receptor expressed on myeloid cells-1 (TREM-1) was upregulated 16-fold after 24 h of treatment with 1,25(OH)(2)D(3). TREM-1 is a pivotal amplifier of the innate immune response in macrophages, leading to increased production by inflammatory response genes. Activation of TREM-1 on the GEC led to an increase in interleukin-8 (IL-8) mRNA levels. Incubation of three-dimensional cultures with 1,25(OH)(2)D(3) led to an increase in antibacterial activity against the periodontal pathogen Aggregatibacter actinomycetemcomitans when the bacteria were added to the apical surface. This study is the first to demonstrate the effect of vitamin D on antibacterial defense of oral epithelial cells, suggesting that vitamin D(3) could be utilized to enhance the innate immune defense in the oral cavity.

Indexed as

Antimicrobial Cationic PeptidesCathelicidinsCells, CulturedEpithelial CellsFluorescent Antibody TechniqueGene Expression RegulationGingivaHost-Pathogen InteractionsHumansImmunity, InnateImmunoblottingReceptors, CalcitriolReverse Transcriptase Polymerase Chain ReactionVitamin DAntimicrobial Cationic PeptidesCathelicidinsReceptors, CalcitriolVitamin D

Identifiers

PMID21422187
PMCPMC3125855
OpenAlexW2134573669

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.