Abstract:Objective To investigate the serum levels of tumor necrosis factor-α (TNF-α), interleukin 8 (IL- 8), intercellular adhesion molecule 1 (ICAM-1) and nuclear factor-κB (NF-κB) in the patients with depression and their significance. Methods Eighty patients with depression treated in Huzhou Third People’s Hospital from January 2016 to December 2017 were selected as the depression group and 80 healthy persons were selected as the control group. Serum TNF-α, IL-8, ICAM-1 and NF-κB levels were measured by enzyme-linked immunosorbent assay. Patients’ depressive mood was assessed using the Hamilton Depression Scale (HAMD). Results The serum levels of TNF-α, IL-8, ICAM-1and NF-κB, and HAMD scores in the depression group were higher than those in the control group (P < 0.05). The serum TNF-α, IL-8, ICAM-1and NF-κB levels and HAMD scores after treatment were lower than those before treatment in the depression group (P < 0.05). The serum TNF-α, IL-8, ICAM-1 and NF-κB levels were positively correlated with HAMD scores in the patients with depression (P < 0.05). The levels of serum TNF-α, IL-8 and ICAM-1 in the patients with depression were negatively correlated with the level of NF-κB (P < 0.05). Conclusions The serum levels of TNF-α, IL-8, ICAM-1 and NF-κB are elevated in the patients with depression. The inflammatory responses are involved in the pathogenesis of depression.