PMID- 23200828 OWN - NLM STAT- MEDLINE DCOM- 20130919 LR - 20130328 IS - 1878-4216 (Electronic) IS - 0278-5846 (Linking) VI - 43 DP - 2013 Jun 3 TI - Melancholic and atypical major depression--connection between cytokines, psychopathology and treatment. PG - 1-6 LID - S0278-5846(12)00291-6 [pii] LID - 10.1016/j.pnpbp.2012.11.009 [doi] AB - BACKGROUND AND PURPOSE: Growing scientific evidence indicates that there is a correlation between depression and alternations in the immune system. The main aim of the study was to investigate serum levels of Interleukin-6 (IL-6) and Tumour Necrosis Factor-alpha (TNF-alpha) in melancholic and atypical depressive patients during acute exacerbations of illness, compared to healthy subjects. The secondary aim was to explore a possible association between cytokine levels and clinical characteristics, as well as total duration of prior antidepressant treatment. METHOD: We measured serum levels of IL-6 and TNF-alpha in 47 patients suffering from major depressive disorder (MDD) (29 melancholic and 18 atypical) in exacerbation of illness, compared to 39 healthy controls, matched by sex, body mass index (BMI) and smoking habits. Serum levels of IL-6 and TNF-alpha were measured by enzyme-linked immunosorbent assay (ELISA). The severity of psychopathology was assessed using the Hamilton Depression Rating Scale (HDRS). RESULTS: IL-6 was significantly elevated in melancholic depressive patients (MDD-M) compared to healthy controls, while no difference was found between the patients with atypical depression (MDD-A) and the healthy group. Lower TNF-alpha serum level was found both in melancholic and in patients with atypical depression, compared with healthy subjects. We detected a positive correlation between cytokine levels in atypical, but not in melancholic subjects. Sex, age, smoking habits and BMI were not associated to cytokine levels in neither group. Clinical parameters (duration of illness, current episode, age of onset) were related to cytokine levels in atypical depression, while the duration of lifetime exposure to antidepressant treatment correlated to IL-6 serum levels in both melancholic and atypical depression. CONCLUSION: Our results suggest that the difference in pro-inflammatory cytokine levels could reflect a biological difference between melancholic and atypical depression. A positive correlation between the cytokines (TNF-alpha and IL-6) observed in depressive patients with atypical features, might be influenced by chronic course of illness, while IL-6 elevation could represent a state indicator for acute exacerbation, especially in melancholic patients. Total duration of antidepressant treatment could be a relevant factor influencing the immune status of patients who suffer either from melancholic or atypical depression. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Dunjic-Kostic, Bojana AU - Dunjic-Kostic B AD - Clinic of Psychiatry, Clinical Centre of Serbia, Pasterova 2, 11000 Belgrade, Serbia. bojanadunjic1978@gmail.com FAU - Ivkovic, Maja AU - Ivkovic M FAU - Radonjic, Nevena V AU - Radonjic NV FAU - Petronijevic, Natasa D AU - Petronijevic ND FAU - Pantovic, Maja AU - Pantovic M FAU - Damjanovic, Aleksandar AU - Damjanovic A FAU - Poznanovic, Sanja Totic AU - Poznanovic ST FAU - Jovanovic, Aleksandar AU - Jovanovic A FAU - Nikolic, Tanja AU - Nikolic T FAU - Jasovic-Gasic, Miroslava AU - Jasovic-Gasic M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121128 PL - England TA - Prog Neuropsychopharmacol Biol Psychiatry JT - Progress in neuro-psychopharmacology & biological psychiatry JID - 8211617 RN - 0 (Antidepressive Agents) RN - 0 (Cytokines) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Adult MH - Age of Onset MH - Analysis of Variance MH - Antidepressive Agents/therapeutic use MH - Cross-Sectional Studies MH - Cytokines/*blood MH - Depressive Disorder, Major/*metabolism/psychology/*therapy MH - Disease Progression MH - Educational Status MH - Female MH - Humans MH - Interleukin-6/blood MH - Male MH - Middle Aged MH - Psychiatric Status Rating Scales MH - Smoking/adverse effects/psychology MH - Socioeconomic Factors MH - Suicidal Ideation MH - Tumor Necrosis Factor-alpha/blood EDAT- 2012/12/04 06:00 MHDA- 2013/09/21 06:00 CRDT- 2012/12/04 06:00 PHST- 2012/09/11 00:00 [received] PHST- 2012/11/20 00:00 [revised] PHST- 2012/11/20 00:00 [accepted] PHST- 2012/12/04 06:00 [entrez] PHST- 2012/12/04 06:00 [pubmed] PHST- 2013/09/21 06:00 [medline] AID - S0278-5846(12)00291-6 [pii] AID - 10.1016/j.pnpbp.2012.11.009 [doi] PST - ppublish SO - Prog Neuropsychopharmacol Biol Psychiatry. 2013 Jun 3;43:1-6. doi: 10.1016/j.pnpbp.2012.11.009. Epub 2012 Nov 28.