ABSTRACT

In this study, we investigated and compared characteristics of the bacterial community structures on hair (scalp hair) and scalp in 18 individuals. Significant differences were found between the sites, in terms of cell density, alpha and beta diversity, and relative abundance of the phyla, Firmicutes and Proteobacteria, whereas no difference was found in relative abundance of the phylum Actinobacteria. Bacteria of the genus Cutibacterium showed similar relative abundance at both sites, whereas those of genus Pseudomonas were highly abundant on hair, and those of genus Staphylococcus were significantly lesser in abundance on hair than on scalp. Statistical correlations between the sites were high for the individual relative abundance of five major operational taxonomic units (OTUs). This suggests that the bacterial community structure on hair is composed of hair-specific genus, Pseudomonas, and skin-derived genera, Cutibacterium and Staphylococcus, and is distinguishable from other human skin microbiomes.

摘要

在这项研究中，我们调查和比较了18个人的头发（头皮头发）和头皮细菌群落结构的特征。在细胞密度，α和β多样性以及门，硬毛和变形杆菌的相对丰度方面，发现了位点之间的显着差异，而在放线门的相对丰度方面没有发现差异。表皮细菌属的细菌在两个位点均显示相似的相对丰度，而假单胞菌属的细菌在头发上高度丰富，葡萄球菌属的细菌在头发上高度丰富头发的丰度明显低于头皮。对于五个主要操作分类单位（OTU）的单个相对丰度，站点之间的统计相关性很高。这表明，毛发上的细菌群落结构由毛发特定属，假单胞菌和皮肤衍生属，角质杆菌和葡萄球菌组成，与其他人类皮肤微生物群不同。