Abstract:
:Despite negative association in cognition and memory, mice harboring Val66Met BDNF SNP (BDNFM/M) exhibit enhanced motor recovery accompanied by elevated excitatory synaptic markers VGLUT1 and VGLUT2 in striatum contralateral to unilateral ischemic stroke. The cortico-striatal pathway is a critical gateway for plasticity of motor/gait function. We hypothesized that enhanced excitability of the cortico-striatal pathway, especially of the contralateral hemisphere, underlies improved motor recovery. To test this hypothesis, we examined the key molecules involving excitatory synaptogenesis: Thrombospondins (TSP1/2) and their neuronal receptor α2δ-1. In WT brains, stroke induced expressions of TSP1/2-mRNA. The contralateral hemisphere of BDNFM/M mice showed heightened TSP2 and α2δ-1 mRNA and protein specifically at 6 months post-stroke. Immunoreactivities of TSPs and α2δ-1 were increased in cortical layers 1/2 of stroked BDNFM/M animals compared with BDNFM/M sham brains at this time. Areal densities of excitatory synapses in cortical layer 1 and striatum were also increased in stroked BDNFM/M brains, relative to stroked WT brains. Notably, the frequency of GABAergic synapses was greatly reduced along distal dendrites in cortical layer 1 in BDNFM/M brains, whether or not stroked, compared with WT brains. There was no effect of genotype or treatment on the density of GABAergic synapses onto striatal medium spiny neurons. The study identified molecular and synaptic substrates in the contralateral hemisphere of BDNFM/M mice, especially in cortical layers 1/2, which indicates selective region-related synaptic plasticity. The study suggests that an increase in excitatory-to-inhibitory synaptic balance along the contralateral cortico-striatal pathway underlies the enhanced functional recovery of BDNFM/M mice.
journal_name
Neurorehabil Neural Repairjournal_title
Neurorehabilitation and neural repairauthors
Qin L,Actor-Engel HS,Woo MS,Shakil F,Chen YW,Cho S,Aoki Cdoi
10.1177/1545968319872997subject
Has Abstractpub_date
2019-12-01 00:00:00pages
989-1002issue
12eissn
1545-9683issn
1552-6844journal_volume
33pub_type
杂志文章abstract:BACKGROUND:Dual tasking can interfere with activity after stroke. OBJECTIVE:The authors examined the interactions between 3 different cognitive tasks and the swing and double-limb support (DLS) components of the gait cycle in community-dwelling individuals poststroke. METHODS:Acquisition of cognitive and gait data we...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309357926
更新日期:2010-07-01 00:00:00
abstract:BACKGROUND:Research has shown that movement impairments following stroke are typically associated with the limb contralateral to the side of the stroke. Prior studies identified ipsilateral motor declines across a variety of tasks. OBJECTIVE:Two experiments were conducted to better understand the ipsilateral contribut...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968306297872
更新日期:2007-09-01 00:00:00
abstract:BACKGROUND:Stroke patients manifest steering difficulties during walking, which may arise from an altered perception of visual motion. OBJECTIVE:To examine the ability of stroke patients to control their heading direction while walking in a virtual environment (VE) describing translational optic flows (OFs) expanding ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968309355985
更新日期:2010-06-01 00:00:00
abstract::Background The reliable stratification of homogeneous subgroups and the prediction of future clinical outcomes within heterogeneous neurological disorders is a particularly challenging task. Nonetheless, it is essential for the implementation of targeted care and effective therapeutic interventions. Objective This stu...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968313520413
更新日期:2014-07-01 00:00:00
abstract:OBJECTIVE:To investigate short- and long-term effects of intensive rehabilitation on ataxia, gait, and activities of daily living (ADLs) in patients with degenerative cerebellar disease. METHODS:A total of 42 patients with pure cerebellar degeneration were randomly assigned to the immediate group or the delayed-entry ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968311425918
更新日期:2012-06-01 00:00:00
abstract:OBJECTIVE:Recent reports have indicated that bone marrow stromal cells (BMSCs) have the potential to improve neurological function when transplanted into models of central nervous system (CNS) disorders, including traumatic spinal cord injury. In this study, the authors aimed to clarify the underlying mechanism through...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968308315596
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:To examine whether cerebral activity during passive movements decreases with time after stroke, and if reduced activity in the representation for the upper extremity can be reversed with training. METHODS:Brain activity was measured by functional magnetic resonance imaging (fMRI) during passive wrist flexion...
journal_title:Neurorehabilitation and neural repair
pub_type: 临床试验,杂志文章
doi:10.1177/1545968306296965
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND:Damage to the callosal motor fibers (CMFs) may affect motor recovery in patients with stroke. However, whether the severity of CMF impairment varies with lesion locations remains unclear. OBJECTIVE:To investigate (1) whether CMF impairment occurs after stroke and whether the impairment varies with lesion lo...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968318779730
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:Functional electrical stimulation (FES) allows active exercises in stroke patients with upper extremity paralysis. OBJECTIVE:To investigate the effect of motor training with FES on motor recovery in acute and subacute stroke patients with severe to complete arm and/or hand paralysis. METHODS:For this pilot...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968308324548
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:This study investigated the course and relationship between investigator-determined and patient-reported level of independence within the first year after spinal cord injury (SCI). The authors examined variables that contributed to these scores. METHODS:In this observational cohort study, 73 patients with tr...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968311407518
更新日期:2011-11-01 00:00:00
abstract:BACKGROUND:Selection of patients who are most and least likely to benefit from constraint-induced therapy (CIT) for the upper extremity is uncertain. OBJECTIVE:This study investigated demographic and clinical characteristics that may predict outcomes for a distributed form of CIT. METHODS:A group of 57 patients were ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968308321773
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Peripheral axon regeneration is improved when the nerve lesion under consideration has recently been preceded by another nerve injury. This is known as the conditioning lesion effect (CLE). While the CLE is one of the most robust and well characterized means to enhance motor axon regeneration in experimental...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968318790020
更新日期:2018-08-01 00:00:00
abstract::Background. Motoneuron loss is a severe medical problem that can result in loss of motor control and eventually death. We have previously demonstrated that partial motoneuron loss can result in dendritic atrophy and functional deficits in nearby surviving motoneurons, and that treatment with androgens can be neuroprot...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968319860485
更新日期:2019-08-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to establish the minimal detectable change (MDC) and clinically important differences (CIDs) of the physical domains of the Stroke Impact Scale (SIS) and to assess the proportions of patients' change scores exceeding the MDC and CIDs after stroke rehabilitation. METHODS:Seventy...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968309356295
更新日期:2010-06-01 00:00:00
abstract:BACKGROUND:Limited data are available about the effectiveness of early rehabilitation after stroke. OBJECTIVE:This is the 1st randomized controlled trial of constraint-induced movement therapy (CIMT) in subacute stroke to investigate neurophysiologic mechanisms and long-term outcome. METHODS:Within 2 weeks after stro...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968306291858
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:There is growing interest in the use of D-amphetamine (D-AMPH) as a pharmacological treatment to supplement rehabilitative therapy following stroke. Based on the success of earlier animal models, several clinical studies have demonstrated beneficial effects of applying physical rehabilitation while stroke pa...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968306290773
更新日期:2006-12-01 00:00:00
abstract::The Motor Status Scale (MSS) measures shoulder, elbow (maximum score = 40), wrist, hand, and finger movements (maximum score = 42), and expands the measurement of upper extremity impairment and disability provided by the Fugl-Meyer (FM) score. This work examines the interrater reliability and criterion validity of the...
journal_title:Neurorehabilitation and neural repair
pub_type: 临床试验,杂志文章
doi:10.1177/154596830201600306
更新日期:2002-09-01 00:00:00
abstract::The remarkable scientific and technological advances in the field of cell research have not been translated into viable restorative therapies for brain disorders. In this article, we examine the best available evidence for the clinical efficacy of reconstructive intracerebral transplantation in people with Parkinson's...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968316635277
更新日期:2016-10-01 00:00:00
abstract::Partnered tango dance can improve balance and gait in individuals with Parkinson's disease (PD). Partnered dance may allow these individuals to challenge balance more than nonpartnered dance. Alternatively, partnered practice could reduce balance gains because the participant may rely on the partner as a balance aid w...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968309353329
更新日期:2010-05-01 00:00:00
abstract::Objective. Stroke recovery is a multidimensional process influenced by biological and psychosocial factors. To understand the latter, we mapped the social networks of stroke patients, analyzing their changes and effects on physical function at 3 and 6 months after stroke. Methods. We used a quantitative social network...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968319872994
更新日期:2019-11-01 00:00:00
abstract::Background. Mesenchymal stem cell (MSC)-derived exosomes play a critical role in regenerative medicine. Objective. To determine the dose- and time-dependent efficacy of exosomes for treatment of traumatic brain injury (TBI). Methods. Male rats were subjected to a unilateral moderate cortical contusion. In the dose-res...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968320926164
更新日期:2020-07-01 00:00:00
abstract:PURPOSE:Sarcopenia and increased fat infiltration in muscle may play a role in the functional impairment and high risk for diabetes in stroke. Our purpose was to compare muscle volume and muscle attenuation across 6 muscles of the paretic and nonparetic thigh and examine the relationships between intramuscular fat and ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968311408920
更新日期:2011-11-01 00:00:00
abstract::Current assessments do not provide reliable factors predictive of outcome from stroke for stroke survivors of intermediate age and severity of deficit. We sought to investigate whether early rate of functional improvement can facilitate prediction of functional outcome, length of stay, and disposition beyond that affo...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/154596830001400309
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Highly challenging exercises have been suggested to induce neuroplasticity in individuals with Parkinson's disease (PD); however, its effect on clinical outcomes remains largely unknown. OBJECTIVE:To evaluate the short-term effects of the HiBalance program, a highly challenging balance-training regimen that...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968314567150
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND:Surface electrical stimulation of the abdominal muscles, with electrodes placed in the posterolateral position, combined with a voluntary cough can assist clearance of airway secretions in individuals with high-level spinal cord injury (SCI). OBJECTIVE:To determine whether an increase in stimulus intensity ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968314552527
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND:Our ability to sense movement is essential for motor control; however, the impact of kinesthesia deficits on functional recovery is not well monitored in the spinal cord injury (SCI) population. One problem is the lack of accurate and reliable tools to measure kinesthesia. OBJECTIVE:The purpose of this stud...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968315591703
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND:Some noninvasive brain-computer interface (BCI) systems are currently available for locked-in syndrome (LIS) but none have incorporated a statistical language model during text generation. OBJECTIVE:To begin to address the communication needs of individuals with LIS using a noninvasive BCI that involves rap...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968313516867
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:To investigate the effectiveness of upper limb rehabilitation, sound measures of upper limb function, capacity, and performance are paramount. OBJECTIVES:This systematic review investigates reliability and responsiveness of upper limb measurement tools used in pediatric neurorehabilitation. METHODS:A 2-tie...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,评审
doi:10.1177/1545968315583723
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Resting brain activity can be modulated by motor tasks to adapt to function. In multiple sclerosis (MS) patients, altered resting-state functional connectivity (RS-FC) has been reported and associated with impaired function and disability; little is known on how RS-FC is modulated by a simple repetitive moto...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968314558600
更新日期:2015-07-01 00:00:00
abstract:BACKGROUND:Objective measures of functional walking remain scarce for individuals with incomplete spinal cord injury (ISCI). Hence, the authors developed the Spinal Cord Injury Functional Ambulation Profile (SCI-FAP), which encompasses the timed performance of 7 tasks, such as walking and negotiating obstacles, doors, ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968310381250
更新日期:2011-03-01 00:00:00