Relationships between ¹⁸F-THK5351 Retention and Language Functions in Primary Progressive Aphasia
Journal of Clinical Neurology
; : 527-536, 2019.
Article
em En
| WPRIM
| ID: wpr-764363
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND AND PURPOSE:
There are three distinct subtypes of primary progressive aphasia (PPA) the nonfluent/agrammatic variant (nfvPPA), the semantic variant (svPPA), and the logopenic variant (lvPPA). We sought to characterize the pattern of [¹⁸F]-THK5351 retention across all three subtypes and determine the topography of [¹⁸F]-THK5351 retention correlated with each neurolinguistic score.METHODS:
We enrolled 50 participants, comprising 13 PPA patients (3 nfvPPA, 5 svPPA, and 5 lvPPA) and 37 subjects with normal cognition (NC) who underwent 3.0-tesla magnetic resonance imaging, [¹⁸F]-THK5351 positron-emission tomography scans, and detailed neuropsychological tests. The PPA patients additionally participated in extensive neurolinguistic tests. Voxel-wise and region-of-interest-based analyses were performed to analyze [¹⁸F]-THK5351 retention.RESULTS:
The nfvPPA patients exhibited higher [¹⁸F]-THK5351 retention in the the left inferior frontal and precentral gyri. In svPPA patients, [¹⁸F]-THK5351 retention was elevated in the anteroinferior and lateral temporal cortices compared to the NC group (left>right). The lvPPA patients exhibited predominant [¹⁸F]-THK5351 retention in the inferior parietal, lateral temporal, and dorsolateral prefrontal cortices, and the precuneus (left>right). [¹⁸F]-THK5351 retention in the left inferior frontal area was associated with lower fluency scores. Comprehension was correlated with [¹⁸F]-THK5351 retention in the left temporal cortices. Repetition was associated with [¹⁸F]-THK5351 retention in the left inferior parietal and posterior temporal areas, while naming difficulty was correlated with retention in the left fusiform and temporal cortices.CONCLUSIONS:
The pattern of [¹⁸F]-THK5351 retention was well matched with clinical and radiological findings for each PPA subtype, in agreement with the anatomical and functional location of each language domain.Palavras-chave
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Índice:
WPRIM
Assunto principal:
Lobo Parietal
/
Semântica
/
Lobo Temporal
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Imageamento por Ressonância Magnética
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Emaranhados Neurofibrilares
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Córtex Pré-Frontal
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Cognição
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Afasia Primária Progressiva
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Compreensão
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Tomografia por Emissão de Pósitrons
Limite:
Humans
Idioma:
En
Revista:
Journal of Clinical Neurology
Ano de publicação:
2019
Tipo de documento:
Article