Evidence map›Paper›PMID 37850109›Full record

ArticleClinical, cosmetic and investigational dermatology2023

Expression of Endothelin-1, Endothelin Receptor-A, and Endothelin Receptor-B in facial melasma compared to adjacent skin.

Carolina Nunhez da Silva, Hélio Amante Miot, Tony Fernando Grassi, Luciane Alarcão Dias-Melício, Leandro Santos, Ana Cláudia Cavalcante Espósito

Open access · goldAbstract read
In one paragraph

Article in Clinical, cosmetic and investigational dermatology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

6 citing papers in PubMed, 8 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. The Pathogenesis of Oxidative Stress-Induced Chloasma and Its Therapeutic Implications.Clinical, cosmetic and investigational dermatology · 2025
    Review
  6. 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

6 authors at 2 institutions in 1 country.

Carolina Nunhez da SilvaDepartment of Dermatology, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.
Hélio Amante MiotDepartment of Dermatology, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.ORCID 0000-0002-2596-9294
Tony Fernando GrassiUNIPEX - Experimental Research Unit, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.ORCID 0000-0002-2718-1564
Luciane Alarcão Dias-MelícioUNIPEX - Experimental Research Unit, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.
Leandro SantosUNIPEX - Experimental Research Unit, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.
Ana Cláudia Cavalcante EspósitoDepartment of Dermatology, São Paulo State University (UNESP) - Medical School of Botucatu, Botucatu, São Paulo State, Brazil.ORCID 0000-0001-9283-2354
Centro Universitário de João Pessoa · BRUniversidade Estadual Paulista (Unesp) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background/Objectives: Although melasma is highly prevalent, its pathogenesis is not yet fully understood. In the skin, endothelin-1 (ET-1) is primarily produced by keratinocytes in response to UVB exposure, which is mediated by an increase in IL-1α or reactive oxygen species. ET-1 plays a role in melanogenesis by binding to specific receptor B (ERB) or receptor A (ERA). However, the expression of ET-1, ERA, and ERB in melasma has not been systematically investigated. The objective of this study was to evaluate the expression of ET-1, ERA, and ERB in facial melasma compared to the adjacent unaffected skin. Methods: Cross-sectional study, with 40 skin samples (20: facial melasma; 20: adjacent unaffected skin) from women with facial melasma without treatment for 30 days except for sunscreen. A triple staining immunofluorescence technique was performed for anti-vimentin, DAPI, plus one of the following antibodies: (a) anti-ET1, (b) anti-ERA; (c) anti-ERB. Interfollicular areas on the slides of each topography (melasma; unaffected skin) were photographed in triplicate under confocal laser microscopy. The mean staining intensities of the image histograms (0-255 pixels intensity) were estimated for different types of cells (suprabasal keratinocytes, basal layer, and upper dermis) and were blindly compared between topographies. Results: The mean (SD) age of the participants was 44.9 (9.2). The expression of ET-1 was increased in the whole epidermis with melasma when compared to the adjacent skin, being 32.8% (CI95% 14.7%-52.6%) higher in the spinous layer (p=0.013), 30.4% (CI95% 13.7%-47.9%) higher in the basal layer (p=0.014), and 29.7% (CI95% 11.4%-49.7%) higher in the melanocytes (p=0.006). There was no noticeable expression of ET-1 within the cells on the upper dermis. Neither ERA nor ERB resulted in differential epidermal expression between melasma and unaffected skin (p≥0.1). Conclusion: ET-1 is expressed more intensely on the epidermis from the skin with facial melasma compared to the unaffected adjacent skin.

Indexed as

endothelin-1endothelin receptor-Aendothelin receptor-Bimmunofluorescence techniquemelasma

Identifiers

PMID37850109
PMCPMC10578179
OpenAlexW4387574115

What Socratic holds

Textmetadata
LicenceCC BY-NC
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 Socratic graph.