Cortical atrophy differentiates Richardson's syndrome from the parkinsonian form of progressive supranuclear palsy
Identifieur interne : 001731 ( Main/Exploration ); précédent : 001730; suivant : 001732Cortical atrophy differentiates Richardson's syndrome from the parkinsonian form of progressive supranuclear palsy
Auteurs : Emma C. Schofield [Australie] ; John R. Hodges [Australie] ; Virginia Macdonald [Australie] ; Nicholas J. Cordato [Australie] ; Jillian J. Kril [Australie] ; Glenda M. Halliday [Australie]Source :
- Movement Disorders [ 0885-3185 ] ; 2011-02-01.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Astrocytes (pathology), Atrophy, Atrophy (pathology), Cell Count, Cerebral Cortex (pathology), Diagnosis, Differential, Humans, Immunohistochemistry, Nervous system diseases, Neurons (pathology), Oligodendroglia (pathology), Parkinson disease, Parkinsonian Disorders (pathology), Parkinsonism, Richardson's syndrome, Supranuclear Palsy, Progressive (pathology), Supranuclear ophthalmoplegia, atrophy, parkinsonism, progressive supranuclear palsy.
- MESH :
Abstract
To determine whether brain atrophy differs between the two subtypes of progressive supranuclear palsy (PSP), Richardson's syndrome (PSP‐RS), and PSP parkinsonism (PSP‐P), and whether such atrophy directly relates to clinical deficits and the severity of tau deposition. We compared 24 pathologically confirmed PSP cases (17 PSP‐RS and 7 PSP‐P) with 22 controls from a Sydney brain donor program. Volume loss was analyzed in 29 anatomically discrete brain regions using a validated point‐counting technique, and tau–immunoreactive neurons, astrocytes and oligodendrocytes/threads semiquantified. Correlations between the two pathological measures and the presence or absence of cardinal PSP symptoms were investigated. Cortical atrophy was more severe in PSP‐RS than PSP‐P and affected more frontal lobe regions (frontal pole, inferior frontal gyrus). The supramarginal gyrus was atrophic in both subtypes. Additionally, atrophy of the internal globus pallidus, amygdala, and thalamus was more severe in PSP‐RS. As expected, more severe frontal lobe tau pathology differentiated PSP‐RS from PSP‐P. No correlations were found between the degree of atrophy and severity of tau pathology in any region assessed, or between the severity of atrophy or tau pathology and the presence or absence of cardinal PSP symptoms. Our study shows that thalamocortical atrophy is a defining feature of PSP‐RS, but this atrophy does not correlate with the presence of any specific cardinal clinical feature. Interestingly, there is a disassociation between tau pathology and atrophy in the brain regions affected in PSP‐RS that requires further investigation. © 2010 Movement Disorder Society
Url:
DOI: 10.1002/mds.23295
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">To determine whether brain atrophy differs between the two subtypes of progressive supranuclear palsy (PSP), Richardson's syndrome (PSP‐RS), and PSP parkinsonism (PSP‐P), and whether such atrophy directly relates to clinical deficits and the severity of tau deposition. We compared 24 pathologically confirmed PSP cases (17 PSP‐RS and 7 PSP‐P) with 22 controls from a Sydney brain donor program. Volume loss was analyzed in 29 anatomically discrete brain regions using a validated point‐counting technique, and tau–immunoreactive neurons, astrocytes and oligodendrocytes/threads semiquantified. Correlations between the two pathological measures and the presence or absence of cardinal PSP symptoms were investigated. Cortical atrophy was more severe in PSP‐RS than PSP‐P and affected more frontal lobe regions (frontal pole, inferior frontal gyrus). The supramarginal gyrus was atrophic in both subtypes. Additionally, atrophy of the internal globus pallidus, amygdala, and thalamus was more severe in PSP‐RS. As expected, more severe frontal lobe tau pathology differentiated PSP‐RS from PSP‐P. No correlations were found between the degree of atrophy and severity of tau pathology in any region assessed, or between the severity of atrophy or tau pathology and the presence or absence of cardinal PSP symptoms. Our study shows that thalamocortical atrophy is a defining feature of PSP‐RS, but this atrophy does not correlate with the presence of any specific cardinal clinical feature. Interestingly, there is a disassociation between tau pathology and atrophy in the brain regions affected in PSP‐RS that requires further investigation. © 2010 Movement Disorder Society</div>
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