title: A resting-state functional magnetic resonance imaging study on the first-degree relatives of persons with schizophrenia.
abstract: In this study, resting state fMRI images and BOLD signals were recorded from 13 first-degree relatives of schizophrenic patients and 13 healthy controls. The data were analyzed with the ReHo approach after realignment, registration, and normalization in statistical parametric mapping 2 (SPM2). A two-sample t-test was used to analyze the ReHo differences between first-degree relatives and healthy controls in a voxel by voxel manner. A combined threshold of p < 0.005 and number of voxels >5 was designated as statistically significant. To evaluate cognitive deficits in first-degree relatives, attention/vigilance and verbal/visual memory were measured. Significant impairments in attention were observed in first-degree relatives compared to healthy controls. Significant abnormalities in ReHo were observed in resting brain in first-degree relatives. Decreased ReHo was found to be distributed over the bilateral middle frontal, middle temporal, cingulate gyrus and cerebellar tonsil; the left inferior frontal gyrus, inferior parietal lobule and dorsolateral prefrontal cortex; the right superior frontal gyrus and dorsolateral prefrontal cortex. Increased ReHo was found to be distributed in the right precuneus and superior temporal gyrus. These changes in ReHo suggest abnormality in the resting state brain function of first-degree relatives of schizophrenic patients and may be early signs for the development of schizophrenia.
authors.affiliation: Department of Radiology, Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410008, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Liao
authors.forename: Lifeng
authors.initials: L
authors.lastname: Wang
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
authors.forename: Jinsong
authors.initials: J
authors.lastname: Tang
authors.forename: Liwen
authors.initials: L
authors.lastname: Tan
authors.forename: Xiongzhao
authors.initials: X
authors.lastname: Zhu
authors.forename: Jingyao
authors.initials: J
authors.lastname: Yi
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Chen
authors.forename: Changlian
authors.initials: C
authors.lastname: Tan
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000503:physiopathology*; D001931:Brain Mapping; D005190:Family; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009415:Nerve Net / Q000503:physiopathology*; D015203:Reproducibility of Results; D012146:Rest; D012559:Schizophrenia / Q000503:physiopathology*; D012680:Sensitivity and Specificity; D055815:Young Adult