Abstract:
:Different subtypes of Alzheimer's disease (AD) with characteristic distributions of neurofibrillary tangles and corresponding brain atrophy patterns have been identified using structural magnetic resonance imaging (MRI). However, the underlying biological mechanisms that determine this differential expression of neurofibrillary tangles are still unknown. Here, we applied graph theoretical analysis to structural MRI data to test the hypothesis that differential network disruption is at the basis of the emergence of these AD subtypes. We studied a total of 175 AD patients and 81 controls. Subtyping was done using the Scheltens' scale for medial temporal lobe atrophy, the Koedam's scale for posterior atrophy, and the Pasquier's global cortical atrophy scale for frontal atrophy. A total of 89 AD patients showed a brain atrophy pattern consistent with typical AD; 30 patients showed a limbic-predominant pattern; 29 patients showed a hippocampal-sparing pattern; and 27 showed minimal atrophy. We built brain structural networks from 68 cortical regions and 14 subcortical gray matter structures for each AD subtype and for the controls, and we compared between-group measures of integration, segregation, and modular organization. At the global level, modularity was increased and differential modular reorganization was detected in the four subtypes. We also found a decrease of transitivity in the typical and hippocampal-sparing subtypes, as well as an increase of average local efficiency in the minimal atrophy and hippocampal-sparing subtypes. We conclude that the AD subtypes have a distinct signature of network disruption associated with their atrophy patterns and further extending to other brain regions, presumably reflecting the differential spread of neurofibrillary tangles. We discuss the hypothetical emergence of these subtypes and possible clinical implications.
journal_name
Front Neuroljournal_title
Frontiers in neurologyauthors
Ferreira D,Pereira JB,Volpe G,Westman Edoi
10.3389/fneur.2019.00524subject
Has Abstractpub_date
2019-05-28 00:00:00pages
524issn
1664-2295journal_volume
10pub_type
杂志文章abstract::Despite the advent of and exciting advances in novel endovascular therapies, t-PA remains the only proven treatment for acute ischemic stroke to date. Although a variety of reasons likely underlie why past trials of endovascular strategies have been unsuccessful, we address in this perspective piece one critical unkno...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2013.00164
更新日期:2013-10-21 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
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abstract::Inflammation after traumatic spinal cord injury (SCI) is non-resolving and thus still present in chronic injury stages. It plays a key role in the pathophysiology of SCI and has been associated with further neurodegeneration and development of neuropathic pain. Neural precursor cells (NPCs) have been shown to reduce t...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.00428
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abstract::Traumatic brain injury resulting from exposure to blast overpressure (BOP) is associated with neuropathology including impairment of the blood-brain barrier (BBB). This study examined the effects of repeated exposure to primary BOP and post-blast treatment with an antioxidant, N-acetylcysteine amide (NACA) on the inte...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00650
更新日期:2019-06-26 00:00:00
abstract::[This corrects the article DOI: 10.3389/fneur.2020.578924.]. ...
journal_title:Frontiers in neurology
pub_type: 已发布勘误
doi:10.3389/fneur.2020.638735
更新日期:2021-01-12 00:00:00
abstract::Stroke is the second leading cause of death and physical disability, with a global lifetime incidence rate of 1 in 6. Currently, the only FDA approved treatment for ischemic stroke is the administration of tissue plasminogen activator (tPA). Stem cell clinical trials for stroke have been underway for close to two deca...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2019.00656
更新日期:2019-06-25 00:00:00
abstract:OBJECTIVES:Use of oral contraceptive pills (OCP) increases the risk of cerebral venous sinus thrombosis (CVST). Whether this risk varies by type, duration, and other forms of hormonal contraceptives is largely unknown. This systematic review and meta-analysis update the current state of knowledge. METHODS:We performed...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2015.00007
更新日期:2015-02-02 00:00:00
abstract::Background: The causal relationship between serum lipid levels and the risk of Parkinson's disease (PD) remains largely uncertain. We summarized the existing controversial evidence on this topic. Methods: We searched the electronic databases for observational studies from January 1988 to March 2020. We applied random-...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.00597
更新日期:2020-06-26 00:00:00
abstract::The persistent primitive hypoglossal artery (PPHA) is the second most common persistent carotid-vertebrobasilar anastomosis, with an incidence of 0.027-0.26%. PPHAs change the hemodynamics of the carotid and vertebrobasilar system and may be associated with intracranial vascular anomalies, but basilar bifurcation aneu...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2017.00168
更新日期:2017-04-26 00:00:00
abstract::Background: Neurofilament light chain (NFL) was believed to be a promising biomarker for the diagnosis of Amyotrophic lateral sclerosis (ALS) and disease burden evaluation. Objective: To determine the serum NFL level and its clinical relevance, including its association with disease severity [evaluated by the ALS Func...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.579094
更新日期:2020-12-03 00:00:00
abstract::Background: Listeria rhombencephalitis, infection of the brainstem with Listeria monocytogenes, occurs mainly in humans and farmed ruminants and is associated with high fatality rates. Small ruminants (goats and sheep) are a large animal model due to neuropathological similarities. The purpose of this study was to def...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.518697
更新日期:2020-12-14 00:00:00
abstract::We previously reported that persistent application of the non-specific cholinergic agonist carbachol (CAR) increased the frequency of calcium channel-mediated oscillatory activity in pedunculopontine nucleus (PPN) neurons, which we identified as dependent on voltage-gated, high-threshold P/Q-type channels. Here, we te...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2013.00176
更新日期:2013-11-06 00:00:00
abstract::Background: The relationship between varicella-zoster virus (VZV)-associated myelitis and aquaporin-4 immunoglobulin-G (AQP4-IgG) remains unknown. Case Report: We report a case of acute radiculomyelitis with longitudinal extensive hyperintensity signals traversing the brainstem until the upper thoracic cord in a 55-ye...
journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.585303
更新日期:2020-11-23 00:00:00
abstract::Objective: As a recently defined disease entity, vestibular migraine (VM) is a variant of migraine with broad spectrum of manifestations. We evaluated a prospective cohort of patients with VM in two centers to assess severity of VM attacks and investigate its contributing factors in patients with VM. Methods: Adult pa...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.595328
更新日期:2020-12-16 00:00:00
abstract::Objective: To investigate the hemodynamic features before and after embolization of paraclinoidal aneurysms using hemodynamic numerical simulation and the influence of embolization on recurrence after embolization. Methods: From January 2016 to December 2017, we enrolled a total of 113 paraclinoidal aneurysms treated ...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00429
更新日期:2019-04-25 00:00:00
abstract::Objective: The platelet-to-lymphocyte ratio (PLR) is a new marker of atherosclerotic inflammation and has been identified as a predictive factor in cardiovascular diseases, but its significance in patients with acute ischaemic stroke (AIS) who have undergone intravenous thrombolysis (IVT) is still unknown. Methods: Co...
journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.01192
更新日期:2019-11-13 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2012.00025
更新日期:2012-02-28 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.00123
更新日期:2018-03-12 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00494
更新日期:2019-05-08 00:00:00
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journal_title:Frontiers in neurology
pub_type:
doi:10.3389/fneur.2020.00530
更新日期:2020-06-10 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2020.00618
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journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2018.00350
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.00993
更新日期:2018-11-23 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00874
更新日期:2019-08-13 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2017.00600
更新日期:2017-11-14 00:00:00
abstract::Anticoagulation is highly effective in preventing stroke due to atrial fibrillation, but numerous studies have demonstrated low utilization of anticoagulation for these patients. Assessment of clinicians' attitudes on this topic indicate that fear of intracerebral hemorrhage (ICH), rather than appreciation of anticoag...
journal_title:Frontiers in neurology
pub_type: 杂志文章,评审
doi:10.3389/fneur.2013.00137
更新日期:2013-10-04 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2018.00883
更新日期:2018-10-22 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2017.00566
更新日期:2017-10-26 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2017.00661
更新日期:2017-12-14 00:00:00
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journal_title:Frontiers in neurology
pub_type: 杂志文章
doi:10.3389/fneur.2019.00455
更新日期:2019-05-03 00:00:00