Evidence map›Paper›PMID 21892789›Full record

ArticleLasers in medical science2011

The 800-nm diode laser irradiation induces skin collagen synthesis by stimulating TGF-β/Smad signaling pathway.

Yongyan Dang, Bei Liu, Lianxi Liu, Xiyun Ye, Xinling Bi, Yong Zhang, Jun Gu

Abstract read
PubMed Publisher
In one paragraph

Article in Lasers in medical science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

28 citing papers in PubMed, 60 citations in OpenAlex.

  1. Trial
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  15. [Research progress of infrared light promoting wound healing].Zhonghua shao shang yu chuang mian xiu fu za zhi · 2022
    Review
  16. Cellular Signalling and Photobiomodulation in Chronic Wound Repair.International journal of molecular sciences · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Under the spotlight: mechanisms of photobiomodulation concentrating on blue and green light.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2019
    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

7 authors at 4 institutions in 1 country.

Yongyan DangSchool of Life Science, East China Normal University, Shanghai, 200062, China. dangyongyan@gmail.com
Bei Liu
Lianxi Liu
Xiyun Ye
Xinling Bi
Yong Zhang
Jun Gu
East China Normal University · CNChanghai Hospital · CNSecond Military Medical University · CNZhongshan Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The 800-nm diode laser is used clinically for hair removal and leg vein clearance. However, the effects of the laser on skin collagen synthesis have not been established. This study aims to research whether the 800-nm laser can be used for non-ablative rejuvenation and its possible mechanism by using an animal model. Eight 2-month-old rats were irradiated with the 800-nm diode laser at 20, 40, and 60 J/cm(2), respectively. Skin samples were taken for histological study and dermal thickness measurement at day 30 after laser irradiation. The expression of procollagen type I, III, IV, transforming growth factor-β (TGF-β), Smad2, 3, 4, and phosphorylated-Smad2, 3 in the rat skin was analyzed 24 h after completing all laser treatments by using RT-PCR and Western blot. Immunohistochemistry was performed to evaluate the content of type I collagen in the skin at day 30 after laser irradiation. The 800-nm diode laser treatments markedly improved the histological structure and increased dermal thickness compared to the non-irradiated controls. Laser irradiation at 40 J/cm(2) significantly up-regulated the expression of procollagen type I and IV, TGF-β and Smad2, 3, 4. The p-Smad2 and p-Smad3 levels were also enhanced in the laser-irradiated skin. The 800-nm laser is effective in improving skin structure and inducing skin new collagen expression. New collagen synthesis induced by the 800-nm laser was mediated by TGF-β/Smad signaling pathway. Thus, it seemed that the 800-nm laser could be used for non-ablative rejuvenation in the future.

Indexed as

Low-Level Light TherapyAnimalsBase SequenceCollagenDNA PrimersFemaleLasers, SemiconductorRatsRats, Sprague-DawleySignal TransductionSkinSkin AgingSmad ProteinsTransforming Growth Factor betaUp-RegulationCollagenDNA PrimersSmad ProteinsTransforming Growth Factor beta

Identifiers

PMID21892789
OpenAlexW1971419522

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.