Evidence map›Paper›PMID 8950452›Full record

ArticleArchives of dermatological research1996

Regulation of keratinocyte proliferation and differentiation by all-trans-retinoic acid, 9-cis-retinoic acid and 1,25-dihydroxy vitamin D3.

S Gibbs, C Backendorf, M Ponec

Abstract read
PubMed Publisher
In one paragraph

Article in Archives of dermatological research, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

14 citing papers in PubMed, 58 citations in OpenAlex.

  1. Trial
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  6. Review
  7. Human saliva stimulates skin and oral wound healing in vitro.Journal of tissue engineering and regenerative medicine · 2019
    Article
  8. G2A AttenuatesAnnals of dermatology · 2017
    Article
  9. Article
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  12. Article
  13. Article
  14. Novel markers of early ovarian pre-granulosa cells are expressed in an Sry-like pattern.Developmental dynamics : an official publication of the American Association of Anatomists · 2009
    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 1 institution in 1 country.

S GibbsDepartment of Dermatology, University Hospital Leiden, The Netherlands.
C Backendorf
M Ponec
Leiden University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We studied the effect of all-trans retinoic acid (all-trans-RA), 9-cis-retinoic acid (9-cis-RA) and 1,25-dihydroxy vitamin D3 (1,25(OH)2D3) on proliferation and differentiation of human keratinocytes cultured in a submerged culture system for up to 5 weeks and evaluated changes in cell morphology and in the expression of proliferation- and terminal differentiation-related genes on both the mRNA and the protein levels. Under control culture conditions, the expression of small proline-rich proteins (SPRR1 and SPRR2), involucrin, Ki67 and c-jun reached a maximum after 2 weeks in culture (1 week postconfluence) and then decreased as the tissue architecture of the cultures deteriorated. Upon simultaneous treatment with both retinoids and 1,25(OH)2D3 a culture was generated that remained stable for 4 weeks with at least eight living cell layers. Furthermore, this culture showed a pattern of SPRR2 and involucrin expression which closely resembled that of native epidermis, a maintained Ki67 expression and a strongly induced c-jun expression. Treatment with 1,25(OH)2D3 alone inhibited cell proliferation and stimulated cell differentiation resulting in acceleration of the differentiated phenotype and was accompanied by inhibition of c-jun and Ki67 expression and also, surprisingly by inhibition of SPRR1, SPRR2 and involucrin expression. In contrast, treatment with all-trans-RA and/or 9-cis-RA induced a more proliferative phenotype with a prolonged lifespan as compared to control cultures. SPRR1 was weakly repressed, SPRR2 was strongly repressed, a delayed induction of involucrin occurred, and c-jun and Ki67 expression were maintained. These results show that modulation of the composition of the medium by the addition of various vitamins results in changes in the balance between keratinocyte proliferation and differentiation which correspond to changes in the expression of proliferation and differentiation markers and prolongation of the culture lifespan.

Indexed as

AlitretinoinCalcitriolCell DifferentiationCell DivisionCells, CulturedCornified Envelope Proline-Rich ProteinsDrug Evaluation, PreclinicalDrug Therapy, CombinationHumansKeratinocytesMembrane ProteinsPhenotypeProtein PrecursorsProteinsProto-Oncogene Proteins c-junRNA, MessengerAlitretinoinCalcitriolCornified Envelope Proline-Rich ProteinsinvolucrinMembrane ProteinsProtein PrecursorsProteinsProto-Oncogene Proteins c-junRNA, MessengerTretinoin

Identifiers

PMID8950452
OpenAlexW1990218144

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.