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Striatofrontal Deafferentiation in MSA-P: Evaluation with [18F]FDG Brain PET

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Author(s)
Hae Won KimMinyoung OhJungsu S. OhSeung Jun OhSang Ju LeeSun Ju ChungJae Seung Kim
Keimyung Author(s)
Kim, Hae Won
Department
Dept. of Nuclear Medicine (핵의학)
Journal Title
PloS One
Issued Date
2017
Volume
12
Issue
1
Abstract
Background;
Although cognitive impairment is not a consistent feature of multiple system atrophy (MSA), increasing evidence suggests that cognitive impairment is common in MSA with predominant parkinsonism (MSA-P). It is assumed that the cognitive impairment in MSA-P is caused by the striatal dysfunction and disruption of striatofrontal connections. The aim of this study was to evaluate the relationship between regional glucose metabolism in the frontal cortex and striatum in patients with MSA-P using [18F]FDG brain PET.


Methods;

Twenty-nine patients with MSA-P and 28 healthy controls underwent [18F]FDG brain PET scan. The [18F]FDG brain PET images were semiquantitatively analyzed on the basis of a template in standard space. The regional glucose metabolism of the cerebral cortex and striatum were compared between MSA-P and healthy control groups. The correlations between age, symptom duration, H&Y stage, UPDRS III score, MMSE score, and glucose metabolism in the cerebellum and striatum to glucose metabolism in the frontal cortex were evaluated by multivariate analysis.


Results;

The glucose metabolism in the frontal cortex and striatum in MSA-P patients were significantly lower than those in healthy controls. Glucose metabolism in the striatum was the most powerful determinant of glucose metabolism in the frontal cortex in MSA-P. Only age and glucose metabolism in the cerebellum were independent variables affecting the glucose metabolism in the frontal cortex in healthy controls.


Conclusion;

The decrease in frontal glucose metabolism in MSA-P is related to the decrease in striatal glucose metabolism. This result provided evidence of striatofrontal deafferentiation in patients with MSA-P.
Keimyung Author(s)(Kor)
김해원
Publisher
School of Medicine
Citation
Hae Won Kim et al. (2017). Striatofrontal Deafferentiation in MSA-P: Evaluation with [18F]FDG Brain PET. PloS One, 12(1), e0169928–e0169928. doi: 10.1371/journal.pone.0169928
Type
Article
ISSN
1932-6203
DOI
10.1371/journal.pone.0169928
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/32549
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Nuclear Medicine (핵의학)
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