Autoimmune Diseases Clinical Trial
Official title:
Exploring Immunological Markers in Blood and Cerebrospinal Fluid Associated With Mental Fatigue in Euthyroidism After Graves' Disease- a Cross Sectional Study
Mental fatigue occurs in many diseases and the reasons are mostly unknown. The investigators hypothesize that remaining mental fatigue after restored hyperthyroidism in Graves' disease is an autoimmune complication. The aim of this study is to explore immunological markers possibly associated with mental fatigue in Graves' disease, which the investigators plan to validate in another study (ImmunoGraves wp 2). Using a cross-sectional study design, mental fatigue is scored using a questionnaire to find 60 patients with and 60 without mental fatigue 15-60 months after diagnosis of Graves disease. The patients and 60 thyroid healthy controls without mental fatigue are assessed for thyroid hormones, quality of life, anxiety and depression, self-evaluated stress, coping strategies, eye symptoms and background variables. SciLifeLab in Stockholm, the national facility for autoimmune profiling, has pre-set large arrays including 42000 human proteins. Serum and cerebrospinal fluid will be separately pooled and analysed for a subgroup of patients with or without mental fatigue and for a subgroup of the control group. Proteins that preferably bind to antibodies in sera and/or cerebrospinal fluid from Graves' patients with mental fatigue in comparison to non-mental fatigue patients, will be screened against the Human Protein Atlas and the Allen brain map to identify those proteins that are expressed in the brain. Antibodies at higher concentration in the mental fatigue pools compared to the group without mental fatigue will be selected for further analyses on an individual level in the whole cohort together with antibodies targeting g-protein coupled receptors, thyroid autoantibodies, cytokines and biomarkers indicating organic and structural nerve damage.
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