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Cytokine expression profiles in children and adolescents with tic disorders

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Kütük, Meryem Özlem
Tufan, Ali Evren
Kılıçaslan, Fethiye
Gökçen, Cem
Aksu, Gülen Güler
Yektaş, Çiğdem
Kandemir, Hasan
Çelik, Fatma
Büber, Ahmet
Karadağ, Mehmet

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en

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Abstract

The etiology of tic disorders (TDs) is not precisely known, although several lines of evidence suggest involvement of the immune system in pathogenesis. Here, we aimed to determine the expression levels of pro-inflammatory and anti-inflammatory cytokines in children with TD and compare them with those of healthy controls. Furthermore, we also evaluated their association with clinical variables in the TD group. Within the study period, 88 children with tic disorders and 111 healthy control children were enrolled. Most children with tic disorders were diagnosed with Tourette's disorder (n = 47, 53.4%) or persistent motor tic disorder (n = 39, 44.3%), while the remainder (n = 2, 2.3%) were diagnosed with persistent vocal tic disorder. We found that children with tic disorders had significantly elevated levels of IL-1 beta, TNF-alpha, IL-6 and IL-4 expression, while we detected lower expression levels of IL-17 in children with tic disorders. Our findings provide a molecular landscape of cytokine expression in children with TD, which may suggest a proinflammatory state not affected by the presence of comorbidity and symptom severity. Delineating the contribution of alterations in the immune system to the pathogenesis of tic disorders may pave the way for better therapeutic interventions.

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Scientific Reports

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Nature Portfolio

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Necrosis-factor-alpha, Dopamine, Inflammation, Inventory, Scale

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