Schizophrenia is a mental illness characterized by symptoms such as hallucinations, delusions, disorganized speech, disorganized or catatonic behavior, and negative symptoms (emotional flatness, apathy, and lack of speech). It causes social and economic burdens to patients and their family. Although etiology of schizophrenia is still uncertain, dopamine dysregulation is traditionally considered as a main etiological factor of schizophrenia, which has been utilized to develop drugs for treating schizophrenia. Recently, inflammation has presented being a risk factor for schizophrenia in that neuroinflammation contributes to the pathophysiology of schizophrenia and the exacerbation of symptom severity. Various factors including diet can regulate inflammatory state. Specific foods or dietary patterns have anti- or pro-inflammatory potentials. Increased levels of pro-inflammatory cytokines and microglia activation have been reported in schizophrenia populations and were related to the pathogenesis of schizophrenia. Omega-3 fatty acids were often recommended to schizophrenia patients because of their anti-inflammatory activities. In this review, we investigate the inflammation-related pathogenesis of schizophrenia and summarize potential nutritional approaches to inhibit the manifestation of symptoms and to alleviate symptom severity using anti-inflammatory nutrients or functional components.
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Recent studies have suggested a relationship of the increased circulating adipokines and inflammatory cytokine, and the risk of metabolic syndrome (MetS). The
objective
of this study was to identify adiposity-related factors that reflect MetS in order to establish early intervention targets. We performed a cross-sectional study which included 108 MetS subjects and 91 controls. Blood adiponectin, leptin, vascular-, and intercellular adhension molecules (VCAM, ICAM), monocyte chemoattractant protein 1 (MCP1), high-sensitivity C-reactive protein (hsCRP), oxidized LDL (oxLDL), tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) were measured. The correlation analysis indicated that the MetS score (sum of the number of MetS risk factors) had an inverse relationship with adiponectin (p < 0.0001), and positive correlations with leptin (p < 0.05), ICAM (p < 0.01), MCP1 (p < 0.05), oxLDL (p < 0.05), TNF-α (p < 0.0001), IL-6 (p < 0.05) and hsCRP (p < 0.01). In multivariate logistic regression analyses, plasma triglyceride (TG) was independently associated with adiponectin, ICAM and TNF-α with the standardized β coefficients of -0.213, 0.197, and 0.193, respectively. Plasma HDL-cholesterol was independently associated with ICAM and hsCRP with the standardized β coefficients of -0.150 and -0.173. Adiponectin, TNF-α, and hsCRP were the most proximate markers reflecting MetS. Among MetS components, TG and HDL-cholesterol concentrations displayed the relationship with inflammatory markers measured in this study.
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