Movement Disorders (revue)

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Rate and Acceleration of Whole-Brain Atrophy in Premanifest and Early Huntington's Disease

Identifieur interne : 002201 ( PascalFrancis/Curation ); précédent : 002200; suivant : 002202

Rate and Acceleration of Whole-Brain Atrophy in Premanifest and Early Huntington's Disease

Auteurs : Edward J. Wild [Royaume-Uni] ; Susie M. D. Henley [Royaume-Uni] ; Nicola Z. Hobbs [Royaume-Uni] ; Chris Frost [Royaume-Uni] ; David G. Macmanus [Royaume-Uni] ; Roger A. Barker [Royaume-Uni] ; Nick C. Fox [Royaume-Uni] ; Sarah J. Tabrizi [Royaume-Uni]

Source :

RBID : Pascal:10-0288336

Descripteurs français

English descriptors

Abstract

Huntington's disease (HD) produces progressive and ultimately widespread impairment ot bram function. Neostriatal atrophy alone cannot account for whole-brain losses seen postmortem, and the mutant huntingtin protein and its neuropathologic sequelae are evident throughout the brain. Whole-brain atrophy quantification encompasses the totality of mutant huntingtin's effects on brain volume and may be useful in tracking progression in trials. We studied whole-brain atrophy in HD using a 2-year follow-up design, with three annual MRI scans. We recruited 20 control subjects, 21 premanifest mutation carriers, and 40 patients with early HD and used the brain boundary shift integral to study rate and acceleration of atrophy. Among subjects with an acceptable quality 2-year scan pair, age- and gender-standardized mean brain atrophy rate was greater (P < 0.001) in the patients with HD (n = 21; 0.88%/yr; 95% confidence interval: 0.62-1.13%/yr) than that in controls (n = 13; 0.16%/yr; 0.00-0.32%/yr). In the 12 patients with early HD in whom acceleration could be directly assessed there was evidence (P = 0.048) of acceleration year-on-year (mean acceleration = 0.69% yr-2; 95% confidence interval: 0.01 % yr-2 to 1.37% yr-2), although this was not formally significantly different from that in controls (n = 7, P = 0.055). Statistically significantly increased atrophy rates and acceleration were not seen overall in the premanifest group, who were on average 18 years from predicted disease onset. We conclude that the study of whole-brain atrophy has the potential to inform our understanding of the neurobiology of HD and warrants further study as one means of assessing the outcomes of future clinical trials.
pA  
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A08 01  1  ENG  @1 Rate and Acceleration of Whole-Brain Atrophy in Premanifest and Early Huntington's Disease
A11 01  1    @1 WILD (Edward J.)
A11 02  1    @1 HENLEY (Susie M. D.)
A11 03  1    @1 HOBBS (Nicola Z.)
A11 04  1    @1 FROST (Chris)
A11 05  1    @1 MACMANUS (David G.)
A11 06  1    @1 BARKER (Roger A.)
A11 07  1    @1 FOX (Nick C.)
A11 08  1    @1 TABRIZI (Sarah J.)
A14 01      @1 Dementia Research Centre, UCL Institute of Neurology @2 London @3 GBR @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 7 aut.
A14 02      @1 Department of Neurodegenerative Disease, UCL Institute of Neurology @2 London @3 GBR @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 7 aut. @Z 8 aut.
A14 03      @1 Medical Statistics Unit, London School of Hygiene and Tropical Medicine @2 London @3 GBR @Z 4 aut.
A14 04      @1 NMR Research Unit, UCL Institute of Neurology @2 London @3 GBR @Z 5 aut.
A14 05      @1 Department of Clinical Neurosciences, Brain Repair Centre, Addenbrooke's Hospital @2 Cambridge @3 GBR @Z 6 aut.
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C01 01    ENG  @0 Huntington's disease (HD) produces progressive and ultimately widespread impairment ot bram function. Neostriatal atrophy alone cannot account for whole-brain losses seen postmortem, and the mutant huntingtin protein and its neuropathologic sequelae are evident throughout the brain. Whole-brain atrophy quantification encompasses the totality of mutant huntingtin's effects on brain volume and may be useful in tracking progression in trials. We studied whole-brain atrophy in HD using a 2-year follow-up design, with three annual MRI scans. We recruited 20 control subjects, 21 premanifest mutation carriers, and 40 patients with early HD and used the brain boundary shift integral to study rate and acceleration of atrophy. Among subjects with an acceptable quality 2-year scan pair, age- and gender-standardized mean brain atrophy rate was greater (P < 0.001) in the patients with HD (n = 21; 0.88%/yr; 95% confidence interval: 0.62-1.13%/yr) than that in controls (n = 13; 0.16%/yr; 0.00-0.32%/yr). In the 12 patients with early HD in whom acceleration could be directly assessed there was evidence (P = 0.048) of acceleration year-on-year (mean acceleration = 0.69% yr-2; 95% confidence interval: 0.01 % yr-2 to 1.37% yr-2), although this was not formally significantly different from that in controls (n = 7, P = 0.055). Statistically significantly increased atrophy rates and acceleration were not seen overall in the premanifest group, who were on average 18 years from predicted disease onset. We conclude that the study of whole-brain atrophy has the potential to inform our understanding of the neurobiology of HD and warrants further study as one means of assessing the outcomes of future clinical trials.
C02 01  X    @0 002B17
C02 02  X    @0 002B17G
C03 01  X  FRE  @0 Atrophie @5 01
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C07 02  X  SPA  @0 Encéfalo patología @5 38
C07 03  X  FRE  @0 Syndrome extrapyramidal @5 39
C07 03  X  ENG  @0 Extrapyramidal syndrome @5 39
C07 03  X  SPA  @0 Extrapiramidal síndrome @5 39
C07 04  X  FRE  @0 Maladie dégénérative @5 40
C07 04  X  ENG  @0 Degenerative disease @5 40
C07 04  X  SPA  @0 Enfermedad degenerativa @5 40
C07 05  X  FRE  @0 Maladie héréditaire @5 41
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N21       @1 186
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Le document en format XML

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<term>Atrophy</term>
<term>Encephalon</term>
<term>Huntington disease</term>
<term>Nervous system diseases</term>
<term>Nuclear magnetic resonance imaging</term>
<term>Volumetric analysis</term>
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<term>Atrophie</term>
<term>Chorée de Huntington</term>
<term>Pathologie du système nerveux</term>
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<div type="abstract" xml:lang="en">Huntington's disease (HD) produces progressive and ultimately widespread impairment ot bram function. Neostriatal atrophy alone cannot account for whole-brain losses seen postmortem, and the mutant huntingtin protein and its neuropathologic sequelae are evident throughout the brain. Whole-brain atrophy quantification encompasses the totality of mutant huntingtin's effects on brain volume and may be useful in tracking progression in trials. We studied whole-brain atrophy in HD using a 2-year follow-up design, with three annual MRI scans. We recruited 20 control subjects, 21 premanifest mutation carriers, and 40 patients with early HD and used the brain boundary shift integral to study rate and acceleration of atrophy. Among subjects with an acceptable quality 2-year scan pair, age- and gender-standardized mean brain atrophy rate was greater (P < 0.001) in the patients with HD (n = 21; 0.88%/yr; 95% confidence interval: 0.62-1.13%/yr) than that in controls (n = 13; 0.16%/yr; 0.00-0.32%/yr). In the 12 patients with early HD in whom acceleration could be directly assessed there was evidence (P = 0.048) of acceleration year-on-year (mean acceleration = 0.69% yr
<sup>-2</sup>
; 95% confidence interval: 0.01 % yr
<sup>-2</sup>
to 1.37% yr
<sup>-2</sup>
), although this was not formally significantly different from that in controls (n = 7, P = 0.055). Statistically significantly increased atrophy rates and acceleration were not seen overall in the premanifest group, who were on average 18 years from predicted disease onset. We conclude that the study of whole-brain atrophy has the potential to inform our understanding of the neurobiology of HD and warrants further study as one means of assessing the outcomes of future clinical trials.</div>
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<s0>Huntington's disease (HD) produces progressive and ultimately widespread impairment ot bram function. Neostriatal atrophy alone cannot account for whole-brain losses seen postmortem, and the mutant huntingtin protein and its neuropathologic sequelae are evident throughout the brain. Whole-brain atrophy quantification encompasses the totality of mutant huntingtin's effects on brain volume and may be useful in tracking progression in trials. We studied whole-brain atrophy in HD using a 2-year follow-up design, with three annual MRI scans. We recruited 20 control subjects, 21 premanifest mutation carriers, and 40 patients with early HD and used the brain boundary shift integral to study rate and acceleration of atrophy. Among subjects with an acceptable quality 2-year scan pair, age- and gender-standardized mean brain atrophy rate was greater (P < 0.001) in the patients with HD (n = 21; 0.88%/yr; 95% confidence interval: 0.62-1.13%/yr) than that in controls (n = 13; 0.16%/yr; 0.00-0.32%/yr). In the 12 patients with early HD in whom acceleration could be directly assessed there was evidence (P = 0.048) of acceleration year-on-year (mean acceleration = 0.69% yr
<sup>-2</sup>
; 95% confidence interval: 0.01 % yr
<sup>-2</sup>
to 1.37% yr
<sup>-2</sup>
), although this was not formally significantly different from that in controls (n = 7, P = 0.055). Statistically significantly increased atrophy rates and acceleration were not seen overall in the premanifest group, who were on average 18 years from predicted disease onset. We conclude that the study of whole-brain atrophy has the potential to inform our understanding of the neurobiology of HD and warrants further study as one means of assessing the outcomes of future clinical trials.</s0>
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