Host factors that shape the bacterial community structure on scalp hair shaft

In this study, we performed 16S rRNA amplicon sequencing analysis of scalp hair shaft from 109 volunteers, who were surveyed using a questionnaire about daily scalp hair care, and employed multiple statistical analyses to elucidate the factors that contribute to the formation of bacterial community...

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Bibliographic Details
Published in:Scientific reports 2021-09, Vol.11 (1), p.17711-17711, Article 17711
Main Authors: Watanabe, Kota, Yamada, Azusa, Nishi, Yuri, Tashiro, Yukihiro, Sakai, Kenji
Format: Article
Language:English
Subjects:
631/326
631/326/41
Bacteria
Bleaching
Chemical treatment
Community structure
Cutibacterium
Hair
Humanities and Social Sciences
Microbiota
multidisciplinary
Pseudomonas
rRNA 16S
Scalp
Science
Science (multidisciplinary)
Sequence analysis
Statistical analysis
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Summary:In this study, we performed 16S rRNA amplicon sequencing analysis of scalp hair shaft from 109 volunteers, who were surveyed using a questionnaire about daily scalp hair care, and employed multiple statistical analyses to elucidate the factors that contribute to the formation of bacterial community structures on scalp hair shaft. Scalp hair microbiota were found to be specific for each individual. Their microbiota were clearly divided into two clusters. Genus level richness of Pseudomonas (Ps) and Cutibacterium (Cu) contributed to the clusters. The clusters around Pseudomonas and Cutibacterium were named Ps-type and Cu-type, respectively. The host gender influenced the bacterial cell numbers of the major genera that included Cutibacterium , Lawsonella , Moraxella , and Staphylococcus on scalp hair shaft. In addition to host intrinsic factors, extrinsic factors such as hair styling and colouring affected the bacterial cell numbers of the major genera. These factors and chemical treatments, such as bleaching and perming, also affected the Ps-type to Cu-type ratios. These results suggest that bacterial community structures on scalp hair shaft are influenced by both intrinsic and extrinsic factors.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-96767-w