Abstract:
OBJECTIVE:Recent studies carried out on amyotrophic lateral sclerosis patients suggest that the disease might initiate in the motor cortex and spread to its targets along the corticofugal tracts. In this study, we aimed to test the corticofugal hypothesis of amyotrophic lateral sclerosis experimentally. METHODS:Sod1G86R and Fezf2 knockout mouse lines were crossed to generate a model that expresses a mutant of the murine Sod1 gene ubiquitously, a condition sufficient to induce progressive motor symptoms and premature death, but genetically lacks corticospinal neurons and other subcerebral projection neurons, one of the main populations of corticofugal neurons. Disease onset and survival were recorded, and weight and motor behavior were followed longitudinally. Hyper-reflexia and spasticity were monitored using electromyographic recordings. Neurodegeneration and gliosis were assessed by histological techniques. RESULTS:Absence of subcerebral projection neurons delayed disease onset, reduced weight loss and motor impairment, and increased survival without modifying disease duration. Absence of corticospinal neurons also limited presymptomatic hyper-reflexia, a typical component of the upper motoneuron syndrome. INTERPRETATION:Major corticofugal tracts are crucial to the onset and progression of amyotrophic lateral sclerosis. In the context of the disease, subcerebral projection neurons might carry detrimental signals to their downstream targets. In its entirety, this study provides the first experimental arguments in favor of the corticofugal hypothesis of amyotrophic lateral sclerosis. ANN NEUROL 2020;88:688-702.
journal_name
Ann Neuroljournal_title
Annals of neurologyauthors
Burg T,Bichara C,Scekic-Zahirovic J,Fischer M,Stuart-Lopez G,Brunet A,Lefebvre F,Cordero-Erausquin M,Rouaux Cdoi
10.1002/ana.25833subject
Has Abstractpub_date
2020-10-01 00:00:00pages
688-702issue
4eissn
0364-5134issn
1531-8249journal_volume
88pub_type
杂志文章abstract::Patients with multiple sclerosis (MS) frequently have selective depletion of the CD45R+CD4+ T-cell subset during active phases of disease. To study the relationship between changes in this subset and the onset of objective clinical exacerbations of disease, a longitudinal study was undertaken. Two CD4+ T-cell subsets ...
journal_title:Annals of neurology
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doi:10.1002/ana.410240204
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abstract::Striopallidodentate calcinosis (Fahr's disease) is characterized clinically by seizures, rigidity, and dementia and pathologically by mineral deposition in the basal ganglia, dentate nucleus, and cerebral cortex. Disorders of iron and calcium-phosphate metabolism are thought to play a role in its pathogenesis. We pres...
journal_title:Annals of neurology
pub_type: 杂志文章
doi:10.1002/ana.410260412
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journal_title:Annals of neurology
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doi:10.1002/ana.24423
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journal_title:Annals of neurology
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doi:10.1002/ana.410430514
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abstract:OBJECTIVE:Cognitive impairment is common in epilepsy, particularly in memory function. Interictal spikes (IISs) are thought to disrupt cognition, but it is difficult to delineate their contribution from general impairments in memory produced by etiology and seizures. We investigated the transient impact of focal IISs o...
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更新日期:1986-05-01 00:00:00
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journal_title:Annals of neurology
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doi:10.1002/ana.24521
更新日期:2016-01-01 00:00:00
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journal_title:Annals of neurology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1002/ana.24474
更新日期:2015-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/ana.410080304
更新日期:1980-09-01 00:00:00
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pub_type: 杂志文章,随机对照试验
doi:10.1002/ana.24447
更新日期:2015-09-01 00:00:00
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doi:10.1002/ana.410420609
更新日期:1997-12-01 00:00:00
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doi:10.1002/ana.24379
更新日期:2015-04-01 00:00:00
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doi:10.1002/ana.22237
更新日期:2011-02-01 00:00:00
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更新日期:2001-08-01 00:00:00
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doi:10.1002/ana.20844
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doi:10.1002/ana.410430412
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journal_title:Annals of neurology
pub_type: 杂志文章,评审
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journal_title:Annals of neurology
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doi:10.1002/ana.24210
更新日期:2014-09-01 00:00:00
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pub_type: 临床试验,杂志文章
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doi:
更新日期:2001-03-01 00:00:00
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更新日期:1985-12-01 00:00:00
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更新日期:2019-08-01 00:00:00