Correlation of inflammatory cytokines with different characteristics of major depressive disorder
Objective:To investigate the correlation between serum inflammatory cytokines and different characteristics of major depressive disorder.Methods:Serum inflammatory cytokines were detected by ELISA,compared differences of serum inflamma-tory cytokines in melancholy/underpowered depression(MPD)group,anxiety/somatization depression(ASD)group and healthy con-trol(HC)group.Spearman was used to analyze the correlation between inflammatory cytokines and HAMD-17 total score and each fac-tor score,independent risk factors for major depressive disorder with different characteristics were analyzed by binary Logistic regres-sion.Results:Compared with HC group and ASD group,serum IFN-α and IL-6 levels in MPD group were increased(P<0.05);level of serum TNF-α was negatively correlated with the score of cognitive impairment in MPD group(P<0.05),level of serum TNF-α was negatively correlated with the score of cognitive impairment in ASD group(P<0.05),and level of IL-6 was negatively correlated with the score of sleep disorder(P<0.05).Conclusion:Inflammatory cytokines are associated with symptoms of different characteristics of major depressive disorder;IFN-α,TNF-α,IL-6 and IL-10 are independent risk factors for melancholy/underpowered major depres-sive disorder,and IFN-α and IL-6 may serve as objective biomarkers to distinguish melancholy/underpowered from anxiety/somatiza-tion major depressive disorder.