Voxel-based alterations in spontaneous brain activity among very-late-onset schizophrenia-like psychosis: A preliminary resting-state functional magnetic resonance imaging study

被引:0
|
作者
Yang, Dan-Ting [1 ]
Ji, Ping [1 ,2 ]
Sun, Jiao-Jiao [3 ]
Gan, Yan-Sha [2 ]
Guo, Shuai-Yi [4 ]
Zhou, Zhen-He [1 ,2 ]
Gao, Xue-Zheng [1 ,2 ]
机构
[1] Nanjing Med Univ, Affiliated Mental Hlth Ctr, Dept Geriatr Psychiat, 156 Qianrong Rd, Wuxi 214151, Jiangsu, Peoples R China
[2] Jiangnan Univ, Affiliated Mental Hlth Ctr, Dept Geriatr Psychiat, Wuxi 214151, Jiangsu, Peoples R China
[3] Yangzhou Univ, Affiliated WuTaiShan Hosp, Dept Psychiat, Yangzhou 225003, Jiangsu, Peoples R China
[4] Nantong Zilang Hosp, Dept Gen Psychiat, Nantong 226006, Jiangsu, Peoples R China
来源
WORLD JOURNAL OF PSYCHIATRY | 2025年 / 15卷 / 03期
关键词
Very-late-onset schizophrenia-like psychosis; Schizophrenia; Resting-state functional magnetic resonance imaging; Amplitude of low-frequency fluctuations; Fractional amplitude of low-frequency fluctuations; Regional homogeneity; Voxel-mirrored homotopic connectivity; CONNECTIVITY; AMPLITUDE; LOBE;
D O I
10.5498/wjp.v15.i3.101494
中图分类号
R749 [精神病学];
学科分类号
100205 ;
摘要
BACKGROUND Very late-onset schizophrenia-like psychosis (VLOSLP) is a subtype of schizophrenia spectrum disorders in which individuals experience psychotic symptoms for the first time after the age of 60. The incidence of VLOSLP shows a linear relationship with increasing age. However, no studies have reported alterations in spontaneous brain activity among VLOSLP patients and their correlation with cognitive function and clinical symptoms. AIM To explore VLOSLP brain activity and correlations with cognitive function and clinical symptoms using resting-state functional magnetic resonance imaging. METHODS This study included 33 VLOSLP patients and 34 healthy controls. The cognitive assessment utilized the Mini Mental State Examination, Montreal Cognitive Assessment, and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Clinical characteristic acquisition was performed via the Positive and Negative Syndrome Scale (PANSS). All participants were scanned via resting-state functional magnetic resonance imaging, and the data were processed using amplitude of low-frequency fluctuations (ALFF), fractional ALFF (fALFF), regional homogeneity, and voxel-mirrored homotopic connectivity (VMHC). RESULTS The VLOSLP group presented decreased ALFF values in the left cuneus, right precuneus, right precentral gyrus, and left paracentral lobule; increased fALFF values in the left caudate nucleus; decreased fALFF values in the right calcarine fissure and surrounding cortex (CAL) and right precuneus; increased regional homogeneity values in the right putamen; and decreased VMHC values in the bilateral CAL, bilateral superior temporal gyrus, and bilateral cuneus. In the VLOSLP group, ALFF values in the right precuneus were negatively correlated with Mini Mental State Examination score and PANSS positive subscale score, and VMHC values in the bilateral CAL were negatively correlated with the RBANS total score, RBANS delayed memory score, and PANSS positive subscale score. CONCLUSION The changes of brain activity in VLOSLP are concentrated in the right precuneus and bilateral CAL regions, which may be associated with cognitive impairment and clinically positive symptoms.
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页数:13
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