Evidence map›Paper›PMID 34007163›Full record

ArticleClinical interventions in aging2021

Scalp Biophysical Characteristics in Males with Androgenetic Alopecia: A Comparative Study with Healthy Controls.

Kumutnart Chanprapaph, Thanapon Sutharaphan, Poonkiat Suchonwanit

Open access · goldAbstract read
In one paragraph

Article in Clinical interventions in aging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 4 pooled it
5.7field-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

23 citing papers in PubMed, 4 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Isolated Actinic Prurigo Cheilitis in an Elderly Thai Female: An Atypical Presentation.Clinical, cosmetic and investigational dermatology · 2026
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  8. Papular Acantholytic Dyskeratosis of the Vulva: A Case Report and Literature Review.Clinical, cosmetic and investigational dermatology · 2025
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  11. Late-Onset Eruptive Clear Cell Syringoma: A Case Report and Literature Review.Clinical, cosmetic and investigational dermatology · 2024
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  12. Lichen Sclerosus of the Labial Mucosa: A Case Report and Literature Review.Clinical, cosmetic and investigational dermatology · 2024
    Article
  13. Article
  14. Article
  15. Trichoscopic Features of Syphilitic Alopecia and Alopecia Areata: A Comparative Study.Clinical, cosmetic and investigational dermatology · 2023
    Article
  16. Unrevealing the Potential ofMolecules (Basel, Switzerland) · 2022
    Article
  17. Article
  18. Article
  19. Article
  20. 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.

Kumutnart ChanprapaphDivision of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.ORCID 0000-0001-7931-3816
Thanapon SutharaphanDivision of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.ORCID 0000-0002-6984-4979
Poonkiat SuchonwanitDivision of Dermatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.ORCID 0000-0001-9723-0563
Mahidol University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAndrogenetic alopecia (AGA) is the most common type of hair loss in men. Its prevalence increases with advancing age. Characteristics of hair loss in male AGA reveal the possibility of different biophysical and physiological profiles between androgen-sensitive (vertex) and androgen-insensitive (occipital) scalps. However, these variations have not been well investigated.

objectiveWe aimed to evaluate and compare scalp biophysical and physiological characteristics in male AGA patients and healthy controls.

methodsScalp biophysiological profiles were evaluated by non-invasive measuring techniques, including skin surface lipids (SSL), transepidermal water loss (TEWL), and stratum corneum hydration (SCH) on both vertex and occipital areas. Values were compared between scalp areas and study groups. Participants with AGA were further categorized based on disease severity (Hamilton-Norwood classification) for subgroup analyses. Correlation coefficients were evaluated to determine the effects of AGA severity and age on each functional parameter.

resultsParticipants were 31 AGA subjects and 31 healthy controls. The vertex scalp of AGA patients had significantly higher SSL (

conclusionMale AGA presents with different biophysical and physiological characteristics in androgen-sensitive and androgen-insensitive areas, and with further differences from controls. These findings could direct further research and aid in the development of optimal hair and scalp treatments to improve scalp functional profiles in particular patients.

Indexed as

AdultAlopeciaCase-Control StudiesEpidermisHairHumansLipidsMaleMiddle AgedScalpSeverity of Illness IndexLipidsalopeciahair losshydrationsebumtransepidermal water loss

Identifiers

PMID34007163
PMCPMC8122003
OpenAlexW3163372675

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.