Association of Elements with Schizophrenia and Intervention of Selenium Supplements

Abstract

The purpose of this study is to explore more trace elements (zinc, potassium, copper, iron, boron, manganese, selenium, chromium and cadmium elements) in addition to calcium, magnesium, lead and arsenic in the sera of patients with schizophrenia and the general population in China and to determine the effect of selenium on schizophrenia patients. Participants were collected from the Pingyin County Mental Health Hospital and Pingyin County. A t test was used to analyse the differences between schizophrenia patients and healthy subjects, and element content differences in gender. Logistic multivariate regression analysis was applied to analyse the influence of elements to schizophrenia. Repeated measures analysis of variance was used to analyse differences in the elements after 1 and 3 months. Mn, Se, Cd, Pb, Ca, Cu and Fe were lower than those in the normal group, and B, Cr, As, K and Mg were higher than those in the control group. The odd ratios (ORs) of serum As and serum K were 2.624 and 1.035, respectively. The ORs of sera Cr, Mn, Se, Ca and Cu were all below one. After intervention of 'selenium weikang' about 1 and 3 months, the serum As was decreased and the serum selenium and copper were increased. Cr, Mn, Se, Ca and Cu might have beneficial, statistically significant effects on schizophrenia. Elements As and K might be harmful to schizophrenia with statistical significance. After selenium supplementation, the schizophrenia patients improved in some factors, like the appetite and memory, and the As element decreased.

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