Evidence map›Paper›PMID 30973913›Full record

ArticlePloS one2019

Scalp bacterial shift in Alopecia areata.

Daniela Pinto, Elisabetta Sorbellini, Barbara Marzani, Mariangela Rucco, Giammaria Giuliani, Fabio Rinaldi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
9.5field-weighted citation impact, top 2% 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

53 citing papers in PubMed, 83 citations in OpenAlex.

  1. Trial
  2. Article
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  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Cutaneous and Gut Dysbiosis in Alopecia Areata: A Review.JID innovations : skin science from molecules to population health · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Skin microbiome and dermatologic disorders.The Journal of clinical investigation · 2025
    Review
  14. Article
  15. Review
  16. Review
  17. Article
  18. Article
  19. Review
  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

6 authors at 1 institution in 1 country.

Daniela PintoGiuliani SpA, Milan, Italy.
Elisabetta SorbelliniHuman Advanced Microbiome Project-HMAP, Milan, Italy.
Barbara MarzaniGiuliani SpA, Milan, Italy.
Mariangela RuccoInternational Hair Research Foundation (IHRF), Milan, Italy.
Giammaria GiulianiGiuliani SpA, Milan, Italy.
Fabio RinaldiGiuliani SpA, Milan, Italy.ORCID 0000-0002-8645-1720
Giuliani (Italy) · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The role of microbial dysbiosis in scalp disease has been recently hypothesized. However, little information is available with regards to the association between microbial population on the scalp and hair diseases related to hair growth. Here we investigated bacterial communities in healthy and Alopecia areata (AA) subjects. The analysis of bacterial distribution at the genus level highlighted an increase of Propionibacterium in AA subjects alongside a general decrease of Staphylococcus. Analysis of log Relative abundance of main bacterial species inhabiting the scalp showed a significant increase of Propionibacterium acnes in AA subjects compared to control ones. AA scalp condition is also associated with a significant decrease of Staphylococcus epidermidis relative abundance. No significant changes were found for Staphylococcus aureus. Therefore, data from sequencing profiling of the bacterial population strongly support a different microbial composition of the different area surrounded hair follicle from the epidermis to hypodermis, highlighting differences between normal and AA affected the scalp. Our results highlight, for the first time, the presence of a microbial shift on the scalp of patients suffering from AA and gives the basis for a larger and more complete study of microbial population involvement in hair disorders.

Indexed as

AdultAlopecia AreataCase-Control StudiesDNA, BacterialDysbiosisFemaleHumansMaleMicrobiotaMiddle AgedPropionibacteriumScalpStaphylococcus aureusStaphylococcus epidermidisYoung AdultDNA, Bacterial

Identifiers

PMID30973913
PMCPMC6459526
OpenAlexW2938462422

What OpenQuestion holds

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LicenceCC BY
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.