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Association between cytokines and psychiatric symptoms in chronic fatigue syndrome and healthy controls.

Abstract：

PURPOSE:The reports regarding the status of the immune system in patients with chronic fatigue syndrome/myalgic encephalopathy (CFS/ME) have been inconclusive. We approached this question by comparing a strictly defined group of CFS/ME outpatients to healthy control individuals, and thereafter studied cytokines in subgroups with various psychiatric symptoms. MATERIALS AND METHODS:Twenty patients diagnosed with CFS/ME according to the Fukuda criteria and 20 age- and sex-matched healthy controls were enrolled in the study. Plasma was analysed by ELISA for levels of the cytokines TNF-α, IL-4, IL-6 and IL-10. Participants also answered questionnaires regarding health in general, and psychiatric symptoms in detail. RESULTS:Increased plasma levels of TNF-α in CFS/ME patients almost reached significance compared to healthy controls (p = .056). When studying the CFS/ME and control groups separately, there was a significant correlation between TNF-α and The Hospital Anxiety and Depression Scale (HADS) depressive symptoms in controls only, not in the CFS/ME group. A correlation between IL-10 and psychoticism was found in both groups, whereas the correlation for somatisation was seen only in the CFS/ME group. When looking at the total population, there was a significant correlation between TNF-α and both the HADS depressive symptoms and the SCL-90-R cluster somatisation. Also, there was a significant association between IL-10 and the SCL-90-R cluster somatisation when analyzing the cohort (patients and controls together). CONCLUSIONS:These findings indicate that immune activity in CFS/ME patients deviates from that of healthy controls, which implies potential pathogenic mechanisms and possible therapeutic approaches to CFS/ME. More comprehensive studies should be carried out on defined CFS/ME subgroups.

journal_name

Nord J Psychiatry

journal_title

Nordic journal of psychiatry

authors

Groven N,Fors EA,Iversen VC,White LR,Reitan SK

doi

10.1080/08039488.2018.1493747

subject

Has Abstract

pub_date

2018-11-01 00:00:00

pages

556-560

issue

eissn

0803-9488

issn

1502-4725

journal_volume

pub_type

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Association between cytokines and psychiatric symptoms in chronic fatigue syndrome and healthy controls.