Alterations of serum metabolic profile in major depressive disorder: A case-control study in the Chinese population

Figure 4 Spearman correlations of metabolites and clinical variables in patients with major depressive disorder and healthy controls. The red background represents the positive correlations between the two compared variables, while the blue background represents the negative correlations. FA: Fatty acid; SHAPS: Snaith-Hamilton Pleasure Scale; GAD-7: Generalized Anxiety Disorder 7-item scale; WHO-5: 5-item World Health Organization Well-Being Index; HAMD-24: Hamilton Depression Rating Scale-24 items; BMI: Body mass index; BUN: Blood urea nitrogen; CREA: Creatinine; URIC: Uric acid; CMPF: 3-Carboxy-4-methyl-5-propyl-2-furanpropanoic acid.