Abstract
Cognitive impairments are common in patients with schizophrenia. Changes in total cholesterol (TC) may be involved in the development of schizophrenia and associated with cognitive function. This study aimed to investigate differences in serum TC level and cognitive function between schizophrenia patients and healthy controls and explore the relationship between serum TC level and cognitive function in patients with schizophrenia. A total of 105 schizophrenia patients and 105 healthy controls were recruited. Results showed that patients with schizophrenia had significantly lower scores on the overall RBANS scale and subscales (i.e., immediate memory, language, attention, and delayed memory) than those of healthy controls. Pearson's correlation analyses showed that in patients with schizophrenia, serum TC levels were positively associated with RBANS subscale scores of immediate memory and language. Furthermore, multivariate regression analyses showed that serum TC level was positively associated with the immediate memory index in patients with schizophrenia. However, no significant association was found between serum TC level and RBANS score in the healthy control group. Our results suggest that elevated serum TC level may be related to improved cognitive function in patients with schizophrenia, especially that of immediate memory.
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