Evidence map›Paper›PMID 23251684›Full record

ArticlePloS one2012

Activity of 25-hydroxylase in human gingival fibroblasts and periodontal ligament cells.

Kaining Liu, Huanxin Meng, Jianxia Hou

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 24% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. 25-hydroxyvitamin DFrontiers in immunology · 2023
    Article
  6. Review
  7. Article
  8. Effect of vitamin DJournal of periodontal research · 2021
    Article
  9. Article
  10. Article
  11. Pleiotropic effects of vitamin DJournal of clinical periodontology · 2020
    Article
  12. Article
  13. 1,25(OH)Journal of clinical medicine · 2019
    Article
  14. Ferritin expression in the periodontal tissues of primates.European journal of histochemistry : EJH · 2019
    Article
  15. Review
  16. 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

3 authors at 2 institutions in 1 country.

Kaining LiuDepartment of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China.
Huanxin Meng
Jianxia Hou
Peking University · CNStomatology Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe previously demonstrated that 25-hydroxyvitamin D(3) concentrations in gingival crevicular fluid are 300 times higher than those in the plasma of patients with aggressive periodontitis. Here we explored whether 25-hydroxyvitamin D(3) can be synthesized by periodontal soft tissue cells. We also investigated which of the two main kinds of hydroxylases, CYP27A1 and CYP2R1, is the key 25-hydroxylase in periodontal soft tissue cells. METHODOLOGY/PRINCIPAL

findingsPrimary cultures of human gingival fibroblasts and periodontal ligament cells from 5 individual donors were established. CYP27A1 mRNA, CYP2R1 mRNA and CYP27A1 protein were detected in human gingival fibroblasts and periodontal ligament cells, whereas CYP2R1 protein was not. After incubation with the 25-hydroxylase substrate vitamin D(3), human gingival fibroblasts and periodontal ligament cells generated detectable 25-hydroxyvitamin D(3) that resulted in the production of 1α,25-dihydroxyvitamin D(3). Specific knockdown of CYP27A1 in human gingival fibroblasts and periodontal ligament cells using siRNA resulted in a significant reduction in both 25-hydroxyvitamin D(3) and 1α,25-dihydroxyvitamin D(3) production. Knockdown of CYP2R1 did not significantly influence 25-hydroxyvitamin D(3) synthesis. Sodium butyrate did not influence significantly CYP27A1 mRNA expression; however, interleukin-1β and Porphyromonas gingivalis lipopolysaccharide strongly induced CYP27A1 mRNA expression in human gingival fibroblasts and periodontal ligament cells.

conclusionsThe activity of 25-hydroxylase was verified in human gingival fibroblasts and periodontal ligament cells, and CYP27A1 was identified as the key 25-hydroxylase in these cells.

Indexed as

25-Hydroxyvitamin D3 1-alpha-HydroxylaseCalcifediolCalcitriolCells, CulturedCholestanetriol 26-MonooxygenaseCytochrome P450 Family 2FibroblastsGingivaHumansPeriodontal LigamentRNA, Messenger25-Hydroxyvitamin D3 1-alpha-HydroxylaseCalcifediolCalcitriolCholestanetriol 26-MonooxygenaseCYP27A1 protein, humanCYP2R1 protein, humanCytochrome P450 Family 2RNA, Messenger

Identifiers

PMID23251684
PMCPMC3520845
OpenAlexW2027211592

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.