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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Soluble interleukin-2 receptor and tumor necrosis factor levels in depressed patients in Estonia

1
Department of Psychiatry, University of Tartu
2
Research Department of Mental Health, Clinic of Psychiatry, the North Estonian Regional Hospital, Estonia
*
Author to whom correspondence should be addressed.
Medicina 2009, 45(12), 971; https://doi.org/10.3390/medicina45120124
Received: 1 October 2008 / Accepted: 4 December 2009 / Published: 9 December 2009
Several studies have reported immune system alterations in depressed patients. Furthermore, correlations between some interleukins and specific depressive symptoms have been found, but results are ambiguous. It might be caused by heterogeneous patient population and concomitant administration of antidepressants. The aim of our study was to look at differences in the levels of soluble interleukin-2 receptor (sIL-2R) and tumor necrosis factor-α (TNFα) between currently depressed patients with first or recurrent episode of depression, patients in full remission and healthy controls. Secondly, we looked for correlations between sIL-2R and TNFα and different depressive symptoms. A total of 75 medication-free currently depressed patients (76% of females), 17 patients in the full remission phase of major depression (58.8% of females), and 55 healthy controls (58.2% of females) participated in this study. The results showed that the level of sIL-2R was significantly lower in depressed patients in remission phase compared to the healthy controls and subjects with recurrent depression. Drug-naï ve patients with major depressive disorder with recurrent episode had higher levels of sIL-2R than previously treated or patients with the first episode. TNFα levels were higher in drug-naï ve patients with major depressive disorder with recurrent episode compared with previously treated patients. Further analysis of patients revealed that sIL-2R was positively correlated with decreased activity and agitation. TNFα was associated with decreased activity and suicidality.
Keywords: depression; cytokines; soluble interleukin-2 receptor; tumor necrosis factoralpha depression; cytokines; soluble interleukin-2 receptor; tumor necrosis factoralpha
MDPI and ACS Style

Eller, T.; Aluoja, A.; Maron, E.; Vasar, V. Soluble interleukin-2 receptor and tumor necrosis factor levels in depressed patients in Estonia. Medicina 2009, 45, 971.

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