In:
Movement Disorders Clinical Practice, Wiley
Abstract:
Frontal lobe signs in progressive supranuclear palsy (PSP) are prevalent and occur early in the disease. Although they are recognized in clinical practice, studies are needed to systematically investigate them for an in‐depth understanding of the neurological substrate and their potential prognostic implications in the disease. Objectives To study the predictive role of frontal lobe signs in PSP, as well as to describe their neuropsychological and anatomical correlations. Methods Nine recognized signs of frontal lobe dysfunction were assessed in 61 patients with PSP. Those signs able to predict PSP Rating Scale (PSPRS) score at baseline were selected, a survival analysis was performed and associations with neuropsychological tests and cortical thickness parameters in brain MRI were studied. Results Grasping, anosognosia and orobuccal apraxia predicted the PSPRS score independently of age, gender, clinical subtype and disease duration. The occurrence of groping in the first 4 years could be a predictor of survival. Grasping and anosognosia were associated with frontal cognitive dysfunction, whereas orobuccal apraxia and groping were related to a more widespread cognitive impairment, involving temporal‐parietal areas. Presence of groping showed an extensive cortical atrophy, with predominant prefrontal, temporal and superior parietal cortical thinning. Conclusions Grasping, groping, anosognosia and orobuccal apraxia are easily evaluable bedside clinical signs that reflect distinct stages of disease progression. Grasping, anosognosia and orobuccal apraxia predict disease disability in patients with PSP, and early onset groping could be a survival predictor. This article is protected by copyright. All rights reserved.
Type of Medium:
Online Resource
ISSN:
2330-1619
,
2330-1619
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2772809-2
