The Correlation between Gut Microbiota and Serum Metabolomic in Elderly Patients with Chronic Heart Failure

Figure 4

Metabolomic analyses of serum samples. (a) The PCA score plot using the first two components. (b) The PLS-DA scores plot based on fecal metabolic profiles in the healthy and CHF group. (c) Heatmap showed the differential proportion of 90 metabolites in the sample of CHF and healthy groups. The different colors of the circle represent different groups, blue circle: QC sample, green circle: CHF group, red circle: healthy group. C: healthy group; H: CHF group.

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