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Background: The aim of the present study was to explore the differences in serum CRP, IL-6, TNF-α, ACTH and cortisol among patients with major depressive disorder with or without metabolic syndrome (MS) compared to a healthy control group., Subjects and Methods: The MDD study group consisted of 80 patients (mean age of 50.03±9.55 years). The control group was recruited from the hospital personnel and it consisted of 40 examinees (mean age of 47.20±7.99 years). All patients who participated in the study were diagnosed with depressive disorder using MINI questionnaire, and Hamilton rating scale for depression. Diagnosis of the metabolic syndrome was set by NCEP ATP III criteria., Results: Examinees with depression but without MS had significantly more cortisol concentration when compared to the control group. CRP was significantly higher in the MDD group when compared to the control group and in MDD+MS group when compared to the control group. IL6 serum levels were significantly higher in the MDD group when compared to the healthy control group, and in MDD+MS group when compared to the healthy control group. ACTH had significant independent predictive values for abdominal obesity. Levels of TNF-α were statistically significant independent predictors for hyperglycaemia. Statistically significant predictive values for MDD were found for cortisol, and IL-6., Conclusion: Results shown here emphasise the importance of neuroendocrine and inflammatory factors in pathogenesis of depressive disorder and MS. Further prospective research is necessary to clarify possible causal relationship between depression and MS. It is necessary to investigate the possibility of a joint biological mechanism in pathogenesis of these two disorders with the special attention given to the disturbances in the immune system.

Background: The high prevalence of metabolic syndrome in patients with psychiatric disorders, almost double the prevalence reported for the general population, is worrying. The aim of this study is to investigate the presence of metabolic syndrome and inflammatory marker levels in patients with schizophrenia and recurrent depressive disorder in a Croatian psychiatric sample., Subjects and Methods: This study included 62 inpatients with schizophrenia and 62 with recurrent depressive disorder treated at the Department of Psychiatry, University Hospital Centre Split, enrolled from November 2011 until May 2012. The cases were compared to 124 healthy subjects from the general population., Results: The presence of metabolic syndrome was found in 56.5% of the patients with schizophrenia and 53.2% of the patients with depression, which was significantly more prevalent than in the control group (32.3%). The levels of inflammation markers (i.e., C-reactive protein and PAI-1) were significantly higher among patients with metabolic syndrome., Conclusions: Patients with schizophrenia and recurrent depressive disorder demonstrate a high prevalence of metabolic syndrome that is also related to inflammation processes. In the context of integrative medicine, clinicians and researchers should consider psychiatric patients within a holistic approach.

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