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Journal ArticleDOI

Role of interleukin 8 in depression and other psychiatric disorders.

TLDR
In this review, studies focusing on the role of IL-8 in psychiatric diseases such as major depression, bipolar disorder, schizophrenia, sleep disorder, autism spectrum disorder, anxiety disorders and dementia are highlighted.
Abstract
Low grade neuroinflammation has been suggested as one of the underlying mechanisms of many psychiatric diseases as well as cognitive disorders. Interleukin 8 (IL-8), a proinflammatory cytokine produced by many cell types including macrophage and microglia, mainly functions as a neutrophil chemoattractant in the bloodstream. IL-8 is also found in the brain, where it is released from microglia in response to proinflammatory stimuli. In this review, we highlight studies focusing on the role of IL-8 in psychiatric diseases such as major depression, bipolar disorder, schizophrenia, sleep disorder, autism spectrum disorder, anxiety disorders and dementia. Increased peripheral IL-8 levels have been reported in these diseases, particularly in schizophrenic disorder, bipolar disorder, obstructive sleep apnea and autism spectrum disorder. The literature on IL-8 and major depression is inconsistent. IL-8 has been found to be a factor associated with schizophrenic prognosis and therapeutic response, and may affect a wide range of symptomatology. Considering that the exact role of immune alterations is still under research, the success of immune-based therapies in psychiatric diseases is limited for the time being.

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Citations
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Journal ArticleDOI

Plasma Levels of the Cytokines B Cell-Activating Factor (BAFF) and A Proliferation-Inducing Ligand (APRIL) in Schizophrenia, Bipolar, and Major Depressive Disorder: A Cross Sectional, Multisite Study.

TL;DR: In this article, the authors investigated if plasma levels of BAFF and APRIL differed between patients with SCZ, BIP, and major depressive disorder (MDD), and tested for associations with psychotic symptom load, controlling for sociodemographic status, antipsychotic and other psychotropic medication, smoking, body mass index, and high sensitivity CRP.
Journal ArticleDOI

IL-6 and IL-8 are likely associated with psychological status in treatment naïve general population.

TL;DR: In this paper, the authors investigated the inflammatory biomarker profiles of psychological treatment-naive individuals and found that a higher CESD total score was correlated with higher CRP (p = 0.009), IL-6 (p=0.013), and IL-8 (p < 0.05) levels.
Journal ArticleDOI

Serum inflammatory markers and their associations with white matter integrity of the corpus callosum in schizophrenia patients and healthy controls

TL;DR: In this article , the authors investigated whether the integrity of the corpus callosum is correlated with levels of peripheral inflammatory markers, including interleukin-6 (IL-6), IL-8, IL-10, tumor necrosis factor-alpha (TNF-α), interferon-gamma (IFN-γ), and C-reactive protein (CRP).
Journal ArticleDOI

RNA regulation of inflammatory responses in glia and its potential as a therapeutic target in central nervous system disorders

TL;DR: The concept of adenine and uridine-rich element (ARE) mediated RNA regulation and its impact on glial-driven neuroinflammatory diseases has been discussed in this paper , where strategies to target this novel level of gene regulation for therapeutic effect and review exciting preliminary studies that underscore its potential for treating neurological disorders.
References
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Journal ArticleDOI

A Meta-Analysis of Cytokines in Major Depression

TL;DR: A meta-analysis of studies measuring cytokine concentration in patients with major depression reports significantly higher concentrations of the proinflammatory cytokines TNF-alpha and IL-6 in depressed subjects compared with control subjects, strengthening evidence that depression is accompanied by activation of the IRS.
Journal ArticleDOI

Microglia-mediated neurotoxicity: uncovering the molecular mechanisms

TL;DR: Overactivated microglia can be detected using imaging techniques and therefore this knowledge offers an opportunity not only for early diagnosis but, importantly, for the development of targeted anti-inflammatory therapies that might slow or halt the progression of neurodegenerative disease.
Journal ArticleDOI

Cytokine-induced sickness behaviour: mechanisms and implications.

TL;DR: The cellular and molecular components of this previously unsuspected system are being progressively identified and are opening new avenues for understanding brain disorders, including depression.
Journal ArticleDOI

A Meta-Analysis of Cytokines in Alzheimer's Disease

TL;DR: The results strengthen the clinical evidence that AD is accompanied by an inflammatory response, particularly higher peripheral concentrations of IL-6, TNF-α, IL-1β, TGF-β,IL-12 and IL-18 and higher CSF concentrations of T GF-β.
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