Evidence map›Paper›PMID 14681684›Full record

ArticleOncogene2003

Suppression of UVB-induced phosphorylation of mitogen-activated protein kinases and nuclear factor kappa B by green tea polyphenol in SKH-1 hairless mice.

Farrukh Afaq, Nihal Ahmad, Hasan Mukhtar

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2003. 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
5.8field-weighted citation impact, top 3% 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, 133 citations in OpenAlex.

  1. Trial
  2. Review
  3. Skin immunity in wound healing and cancer.Frontiers in immunology · 2023
    Review
  4. Review
  5. Long non-coding RNA HOTAIR promotes UVB-induced apoptosis and inflammatory injury by up-regulation of PKR in keratinocytes.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2018
    Article
  6. Tea polyphenols for the prevention of UVB-induced skin cancer.Photodermatology, photoimmunology & photomedicine · 2018
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. The green tea polyphenol EGCG potentiates the antiproliferative activity of sunitinib in human cancer cells.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Protective mechanisms of green tea polyphenols in skin.Oxidative medicine and cellular longevity · 2012
    Review
  18. Review
  19. Review
  20. Natural agents: cellular and molecular mechanisms of photoprotection.Archives of biochemistry and biophysics · 2011
    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

3 authors at 1 institution in 1 country.

Farrukh AfaqDepartment of Dermatology, University of Wisconsin, Madison, WI 53706, USA.
Nihal Ahmad
Hasan Mukhtar
University of Wisconsin–Madison · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Studies from our laboratory have shown that epigallocatechin-3-gallate, the major polyphenol present in green tea, inhibits ultraviolet (UV)B-exposure-mediated phosphorylation of mitogen-activated protein kinases (MAPKs) (Toxicol. Appl. Pharmacol. 176: 110-117, 2001) and activation of nuclear factor kappa B (NF-kappaB) (Oncogene 22: 1035-1044, 2003) pathways in normal human epidermal keratinocytes. This study was designed to investigate the relevance of these findings to the in vivo situations in SKH-1 hairless mouse model, which is regarded to have relevance to human situations. SKH-1 hairless mice were topically treated with GTP (5 mg/0.2 ml acetone/mouse) and were exposed to UVB 30 min later (180 mJ/cm2). These treatments were repeated every alternate day for 2 weeks, for a total of seven treatments. The animals were killed 24 h after the last UVB exposure. Topical application of GTP resulted in significant decrease in UVB-induced bifold-skin thickness, skin edema and infiltration of leukocytes. Employing Western blot analysis and immunohistochemical studies, we found that GTP resulted in inhibition of UVB-induced: (i) phosphorylation of extracellular-signal-regulated kinases (ERK1/2), (ii) c-Jun N-terminal kinases, and (iii) p38 protein expression. Since NF-kappaB plays a major role in inflammation and cell proliferation, we assessed the effect of GTP on UVB-mediated modulations in the NF-kappaB pathway. Our data demonstrated that GTP inhibited UVB-induced: (i) activation of NF-kappaB, (ii) activation of IKKalpha, and (iii) phosphorylation and degradation of IkappaBalpha. Our data suggest that GTP protects against the adverse effects of UV radiation via modulations in MAPK and NF-kappaB signaling pathways, and provides molecular basis for the photochemopreventive effect of GTP in an in vivo animal model system.

Indexed as

TeaUltraviolet RaysAnimalsBlotting, WesternCell DivisionCell NucleusEdemaFemaleFlavonoidsGuanosine TriphosphateHyperplasiaI-kappa B KinaseI-kappa B ProteinsImmunohistochemistryLeukocytesMAP Kinase Signaling SystemChuk protein, mouseFlavonoidsGuanosine TriphosphateI-kappa B KinaseI-kappa B ProteinsIkbkb protein, mouseIkbke protein, mouseMitogen-Activated Protein KinasesNF-kappa BNF-KappaB Inhibitor alphaNFKBIA protein, humanNfkbia protein, mousePhenolsPolyphenolsProtein Serine-Threonine KinasesTea

Identifiers

PMID14681684
OpenAlexW2065548455

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.