Serum homocysteine showed potential association with cognition and abnormal gut microbiome in major depressive disorder

Figure 4 Correlation between Hamilton depression rating scale and gut microbiota. A: Relationships between Hamilton depression rating scale (HAMD) scores and the relative abundance of Ruminococcaceae; B: Relationships between HAMD scores and the relative abundance of Faecalibacterium; C: Relationships between HAMD scores and the relative abundance of Holdemanella. The correlations were evaluated using Spearman correlation analysis. OTU: Operational taxonomic units; HAMD: Hamilton depression rating scale.