Table 3.

Summary of Chemokines Studies in Serum/Plasma of MDD Patients.

Study / Year	Chemokines	Findings
Song et al. (1998)	CXCL8	Increased
Simon el al. (2008)	CXCL8, CCL2, CCL3, CCL11	Increased
Sutcigil et al. (2007)	CCL2	Increased
O’Brien et al. (2007)	CXCL8	No significant difference
Eller et al. (2008)	CXCL8	No significant difference
Wang et al. (2008)	CXCL10	Increased
Musselman et al. (2000)	OC3CL1, CLL3	Increased
Lehto et al. (2010)	CCL2, CCL3	Decreased
Oglodek et al. (2014)	CXCL12, CCL5	Increased
Meta-analyses
Eyre et al. (2016)	CCL	Increased
	CXCL8	No significant difference
Leighton et al. (2018)	CCL2, CCL3, CCL11, CXCL7, CXCL8	Increased
	CCL4	Decreased
	CCL5	No significant difference