Shape analysis of the corpus callosum in Alzheimer's disease and frontotemporal lobar degeneration subtypes

Date

2014

Authors

Walterfang, Mark
Luders, Eileen
Looi, Jeffrey
Rajagopalan, Priya
Velakoulis, Dennis
Thompson, Paul M
Lindberg, Olof
Ostberg, P
Nordin, Love E
Svensson, Leif

Journal Title

Journal ISSN

Volume Title

Publisher

IOS Press

Abstract

Morphology of the corpus callosum is a useful biomarker of neuronal loss, as different patterns of cortical atrophy help to distinguish between dementias such as Alzheimer's disease (AD) and frontotemporal lobar degeneration (FTLD). We used a sophisticated morphometric analysis of the corpus callosum in FTLD subtypes including frontotemporal dementia (FTD), semantic dementia (SD), and progressive non-fluent aphasia (PNFA), and compared them to AD patients and 27 matched controls. FTLD patient subgroups diverged in their callosal morphology profiles, with FTD patients showing marked widespread differences, PNFA patients with differences largely in the anterior half of the callosum, and SD patients differences in a small segment of the genu. AD patients showed differences in predominantly posterior callosal regions. This study is consistent with our previous findings showing significant cortical and subcortical regional atrophy across FTLD subtypes, and suggests that callosal atrophy patterns differentiate AD from FTLD, and FTLD subtypes.

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Citation

Source

Journal of Alzheimer's Disease

Type

Journal article

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DOI

10.3233/JAD-131853

Restricted until

2037-12-31