The Potential Use of Monocyte-to-High-Density Lipoprotein Ratio as a Chronic Inflammatory Marker in Major Depressive Disorder

Background: Monocytes secrete pro-inflammatory and pro-oxidant cytokines as part of inflammatory reactions. High-density lipoproteins have anti-inflammatory and antioxidant effects. This study investigated the potential use of the monocyte-to-high-density lipoprotein ratio in the follow-up of major depressive disorder. Methods: The study group was composed of patients with newly diagnosed or preexisting major depressive disorder who applied to a psychiatric clinic and did not receive antidepressant treatment in the last 2 weeks. These patients were tested for the monocyte-to-high-density lipoprotein ratio in the psychiatric outpatient clinic both in the first interview and at their follow-up at 2 months. The control group, on the other hand, consisted of subjects who presented to the checkup clinic without any complaints. Results: = .271). Conclusion: The high-density lipoprotein levels in healthy controls were not higher than those in the group with major depressive disorder; monocyte levels did not differ between the groups and the monocyte-to-high-density lipoprotein ratio was not superior to Beck's Depression Inventory and could not be used in prognosis.