Distinct Features of Gut Microbiota in High-Altitude Tibetan and Middle-Altitude Han Hypertensive Patients

Figure 1

Shared and unique OTUs and α-diversity and β-diversity of GM among HP subgroups and HI subgroups. Venn diagrams (a) and (b) visually show the similarity and overlap of OTUs. Boxplot (c) was analyzed using Shannon diversity index. The short horizontal line of box from top to bottom stands for 75th, 50th, and 25th percentile, respectively. The value close to vertical axis denotes the significance of differences in GM composition among three subgroups by one-way ANOVA, and other values attached to horizontal lines are values between two subgroups compared by the t test in pairs. PCoA chart (d) shows the bidimensional scatter plots of PcoA1 and PcoA2 axes and ellipse represents core position for each group.

(a)

(b)

(c)

(d)