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Published in: Cognitive Neurodynamics 4/2019

09-04-2019 | Research Article

Plasma total antioxidant status and cognitive impairments in first-episode drug-naïve patients with schizophrenia

Authors: Ting Xie, Qiongwei Li, Xingguang Luo, Li Tian, Zhiren Wang, Shuping Tan, Song Chen, Guigang Yang, Huimei An, Fude Yang, Yunlong Tan

Published in: Cognitive Neurodynamics | Issue 4/2019

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Abstract

Accumulating evidence suggest that excessive reactive oxygen species-induced oxidative damage may underlie neurodegeneration and cognitive impairment in several disorders including schizophrenia. In this study we examined the association of oxidative stress with cognitive deficits in first-episode drug-naïve (FEDN) patients with schizophrenia. We recruited 54 FEDN patients and 50 age- and sex-matched healthy controls and examined the Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus cognitive Battery (MCCB) and plasma total antioxidant status (TAS). Psychopathological symptoms were assessed using the Positive and Negative Syndrome Scale. The results showed that plasma TAS levels were significantly lower in the patients than those in the healthy subjects (94.7 ± 25.0 U/ml vs 156.6 ± 46.7 U/ml, p < 0.0001). The patients scored lower than healthy controls on the MCCB total score, speed of processing, attention/vigilance and managing emotion test index and STROOP test. For the patients, TAS was associated with some domains of cognitive deficits in schizophrenia, such as speed of processing, attention/vigilance and emotion managing. Our results suggested that oxidative stress may be involved in the pathophysiology of schizophrenia at the early of stage and its cognitive impairment.

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Metadata
Title
Plasma total antioxidant status and cognitive impairments in first-episode drug-naïve patients with schizophrenia
Authors
Ting Xie
Qiongwei Li
Xingguang Luo
Li Tian
Zhiren Wang
Shuping Tan
Song Chen
Guigang Yang
Huimei An
Fude Yang
Yunlong Tan
Publication date
09-04-2019
Publisher
Springer Netherlands
Published in
Cognitive Neurodynamics / Issue 4/2019
Print ISSN: 1871-4080
Electronic ISSN: 1871-4099
DOI
https://doi.org/10.1007/s11571-019-09530-3

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