Title | Primary progressive aphasia and the FTD-MND spectrum disorders: clinical, pathological, and neuroimaging correlates. |
Publication Type | Journal Article |
Year of Publication | 2019 |
Authors | Vinceti G, Olney N, Mandelli MLuisa, Spina S, H Hubbard I, Santos-Santos MA, Watson C, Miller ZA, Lomen-Hoerth C, Nichelli P, Miller BL, Grinberg LT, Seeley WW, Gorno-Tempini MLuisa |
Journal | Amyotroph Lateral Scler Frontotemporal Degener |
Volume | 20 |
Issue | 3-4 |
Pagination | 146-158 |
Date Published | 2019 05 |
ISSN | 2167-9223 |
Keywords | Aged, Atrophy, Autopsy, Cerebral Cortex, Cohort Studies, Female, Frontotemporal Dementia, Humans, Language Disorders, Magnetic Resonance Imaging, Male, Middle Aged, Motor Neuron Disease, Neuroimaging, Neurologic Examination, Neuropsychological Tests, Primary Progressive Nonfluent Aphasia, Retrospective Studies, Tissue Banks |
Abstract | Behavioral variant frontotemporal dementia (bvFTD), is commonly considered the cognitive presentation of the frontotemporal dementia-motor neuron disease (FTD-MND) spectrum disorder. We evaluated the prevalence of primary progressive aphasia in a series of pathologically confirmed cases of FTD-MND spectrum. Pathologically confirmed cases of frontotemporal lobar degeneration-motor neuron disease (FTLD-MND) were obtained from the UCSF brain bank. Cases were analyzed for presence of language impairment via retrospective chart review of research visits that include neurologic exam, in-depth cognitive testing and magnetic resonance imaging (MRI) imaging. Forty one cases were included. Thirty two were diagnosed with FTD-MND, while nine cases were diagnosed as MND-only from clinical evaluation. Ten FTLD-MND cases (31%) presented with prominent or isolated language involvement consistent with a diagnosis of primary progressive aphasia (PPA), which we called progressive aphasia with motor neuron disease (PA-MND). Of these, three cases that mirrored the non-fluent variant of PPA (nfvPPA) were named nfvPA-MND. The imaging pattern of these nfvPA-MND showed atrophy strictly confined to the frontal and anterior temporal language cortical areas. Another group of seven cases that resembled patients with the semantic variant PPA (svPPA) were named svPA-MND. The group of svPPA-MND on imaging analysis showed selective atrophy of the temporal lobe and orbitofrontal cortex. Language impairment was a frequent phenotype of FTD-MND associated with focal atrophy patterns within the language networks. This data suggest patients with FTD-MND can present quite often with language phenotype of nfvPPA and svPPA, as opposed to exclusive bvFTD symptoms. |
DOI | 10.1080/21678421.2018.1556695 |
Alternate Journal | Amyotroph Lateral Scler Frontotemporal Degener |
PubMed ID | 30668155 |
PubMed Central ID | PMC6759325 |
Grant List | P50 AG023501 / AG / NIA NIH HHS / United States U01 AG052943 / AG / NIA NIH HHS / United States K23 AG048291 / AG / NIA NIH HHS / United States P01 AG019724 / AG / NIA NIH HHS / United States R01 NS100440 / NS / NINDS NIH HHS / United States K08 AG052648 / AG / NIA NIH HHS / United States K24 DC015544 / DC / NIDCD NIH HHS / United States T32 AG023481 / AG / NIA NIH HHS / United States P30 AG062422 / AG / NIA NIH HHS / United States R56 NS050915 / NS / NINDS NIH HHS / United States R01 NS050915 / NS / NINDS NIH HHS / United States |