摘要
目的:通过325例轻度认知障碍(MCI)、155例AD和185例健康对照,探讨阿尔茨海默病(AD)病理对胼胝体(CC)的影响。方法:采用基于统计形状分析管道的大变形差异测量曲线,对AD诱发的区域特异性形态CC异常进行量化。我们还量化了CC形态表型与两种认知指标的关系:简易精神状态检查(MMSE)和阿尔茨海默病评估量表-认知行为部分(ADAS-COG)。为了识别AD相关区域,CC被划分为三个亚区:属、体和脾(GCC、BCC和SCC).结果:AD组与HC组相比有明显的形态压缩,主要集中在CC的上半部,分布于所有三个亚区。HC-VS-MCI形态异常也集中在上半部,但主要发生在基底细胞癌和鳞状细胞癌。MCI-VS-AD形态差异仅见于部分SCC.在形状认知联想中,GCC和SCC区域的形状变形与ADAS-COg呈显著负相关,以SCC为主的区域与MMSE呈显著正相关。结论:胼胝体变形模式,特别是鳞状细胞癌,与AD的认知功能减退密切相关,是监测AD进展的重要生物标志物。
关键词: 阿尔茨海默病,轻度认知损害,胼胝体,形态分析,变形,形状认知联系。
Current Alzheimer Research
Title:Deformation-based Statistical Shape Analysis of the Corpus Callosum in Mild Cognitive Impairment and Alzheimer’s Disease
Volume: 15 Issue: 12
关键词: 阿尔茨海默病,轻度认知损害,胼胝体,形态分析,变形,形状认知联系。
摘要: Objective: In this study, we investigated the influence that the pathology of Alzheimer’s disease (AD) exerts upon the corpus callosum (CC) using a total of 325 mild cognitive impairment (MCI) subjects, 155 AD subjects, and 185 healthy control (HC) subjects.
Method: Regionally-specific morphological CC abnormalities, as induced by AD, were quantified using a large deformation diffeomorphic metric curve mapping based statistical shape analysis pipeline. We also quantified the association between the CC shape phenotype and two cognitive measures; the Mini Mental State Examination (MMSE) and the Alzheimer’s Disease Assessment Scale-Cognitive Behavior Section (ADAS-cog). To identify AD-relevant areas, CC was sub-divided into three subregions; the genu, body, and splenium (gCC, bCC, and sCC).
Results: We observed significant shape compressions in AD relative to that in HC, mainly concentrated on the superior part of CC, across all three sub-regions. The HC-vs-MCI shape abnormalities were also concentrated on the superior part, but mainly occurred on bCC and sCC. The significant MCI-vs-AD shape differences, however, were only detected in part of sCC. In the shape-cognition association, significant negative correlations to ADAS-cog were detected for shape deformations at regions belonging to gCC and sCC and significant positive correlations to MMSE at regions mainly belonging to sCC.
Conclusion: Our results suggest that the callosal shape deformation patterns, especially those of sCC, linked tightly to the cognitive decline in AD, and are potentially a powerful biomarker for monitoring the progression of AD.
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Deformation-based Statistical Shape Analysis of the Corpus Callosum in Mild Cognitive Impairment and Alzheimer’s Disease, Current Alzheimer Research 2018; 15 (12) . https://dx.doi.org/10.2174/1567205015666180813145935
DOI https://dx.doi.org/10.2174/1567205015666180813145935 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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Neuroinflammation is an invariable hallmark of chronic and acute neurodegenerative disorders and has long been considered a potential drug target for Alzheimer?s disease (AD) and dementia. Significant evidence of inflammatory processes as a feature of AD is provided by the presence of inflammatory markers in plasma, CSF and postmortem brain ...read more
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