Comparing chronic obstructive pulmonary disease and depressive disorder in terms of inflammation-related biomarkers.

ABSTRACT

Introduction: Chronic obstructive pulmonary disease (COPD) is characterized by the presence of depressive symptoms. Methods: Cytokine and deiodinase iodothyronines (DIOs) levels were evaluated in COPD patients and patients diagnosed with depressive disorder and control individuals. using enzyme-linked immunosorbent assays. Results: Interleukin 1ß (IL-1ß), and tumor necrosis factor-α (TNF-α) levels were higher in COPD and depression patients than in control individuals. DIO2 were significantly lower in COPD and recurrent depressive disorder (rDD) patients than in controls. Conclusions: Changes in the levels of IL-1ß, TNF-α and DIO2 in COPD patients may explain the presence of depression in COPD patients.