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-response study, animals received a single intravenous injection of exosomes (50, 100, 200 µg per rat) or vehicle, with treatment initiated at 1 day after injury. In the therapeutic window study, animals received a single intravenous injection of 100 µg exosomes or vehicle starting at 1, 4, or 7 days after injury. Neurological functional tests were performed weekly after TBI for 5 weeks. Spatial learning was measured on days 31 to 35 after TBI using the Morris water maze test. Results. Compared with the vehicle, regardless of the dose and delay in treatment, exosome treatment significantly improved sensorimotor and cognitive function, reduced hippocampal neuronal cell loss, promoted angiogenesis and neurogenesis, and reduced neuroinflammation. Exosome treatment at 100 µg per rat exhibited a significant therapeutic effect compared with the 50- or 200-µg exosome groups. The time-dependent exosome treatment data demonstrated that exosome treatment starting at 1 day post-TBI provided a significantly greater improvement in functional and histological outcomes than exosome treatments at the other 2 delayed treatments. Conclusions. These results indicate that exosomes have a wide range of effective doses for treatment of TBI with a therapeutic window of at least 7 days postinjury. Exosomes may provide a novel therapeutic intervention in TBI.
journal_name
Neurorehabil Neural Repairjournal_title
Neurorehabilitation and neural repairauthors
Zhang Y,Zhang Y,Chopp M,Zhang ZG,Mahmood A,Xiong Ydoi
10.1177/1545968320926164subject
Has Abstractpub_date
2020-07-01 00:00:00pages
616-626issue
7eissn
1545-9683issn
1552-6844journal_volume
34pub_type
杂志文章abstract:BACKGROUND:Cortical networks underlying motor imagery are functionally close to motor performance networks and can be activated by patients with severe motor disabilities. OBJECTIVE:The aim of the study was to examine the longitudinal effect of progressive motoneuron degeneration on cortical representation of motor im...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968307300698
更新日期:2007-11-01 00:00:00
abstract::The purpose of this study was to estimate the overall cost of managing focal spasticity after stroke (CVA) and traumatic brain injury (TBI) and the cost impact of individual treatments. Sixty physicians described management strategies over six treatment visits for four focal spasticity case studies (one upper and one ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/154596830101500108
更新日期:2001-01-01 00:00:00
abstract:OBJECTIVE:A variety of rehabilitation strategies have been tried in patients with chronic hemianopia and quadrantanopia. The authors compared 2 approaches of blind field exploration in those with recent onset of disease. METHODS:A total of 20 patients with visual field defects were studied between 3 and 24 weeks prima...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968310372774
更新日期:2010-09-01 00:00:00
abstract::Previous literature has suggested that reflex sympathetic dystrophy, also known as complex regional pain syndrome (CRPS) type 1, is a relatively common finding after a stroke. However, much of this data was obtained before patients routinely received early intensive inpatient rehabilitation. The purpose of this study ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/154596830001400107
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Stroke patients with a low memory self-efficacy (MSE) report more memory complaints than patients with a high MSE. OBJECTIVE:The aim of this study was to examine the effect of a memory-training program on MSE in the chronic phase after stroke and to identify which patients benefit most from the MSE training...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968312455222
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:There are indications that perilesional and remote peripheral motor axons may degenerate after spinal cord injury (SCI). The authors investigated the magnitude and dependence on severity of SCI of this degeneration as well as whether motor axons so affected can recover. METHODS:The function of the peripheral...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968310368534
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:Predicting walking outcomes poststroke is a challenge for clinicians. OBJECTIVE:To identify the extent to which exercise dose (repetitions of leg movements) in the first week of a comprehensive stroke unit stay predicts discharge mobility. METHODS:A cohort study was conducted on 200 consecutive people admi...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968312439628
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:In hemiplegic gait, step length typically differs in magnitude between paretic and nonparetic sides. However, the direction of step-length asymmetry varies across stroke patients. OBJECTIVE:The study sought to understand directional variations in step-length asymmetry in terms of asymmetries in forward foot...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968310380687
更新日期:2011-03-01 00:00:00
abstract:BACKGROUND:Ambulating on stairs is an important aspect of daily activities for many individuals with incomplete spinal cord injury (SCI), and little is known about the effect of training for this specific task. OBJECTIVE:The goal of this study was to determine whether staircase ascent training enhances motor recovery ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968310378510
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVE:To systematically review the literature with meta-analysis to determine whether persistence of sensorimotor or physiological impairment exists between 4 weeks to 6 months post mild traumatic brain injury (mTBI), and assign level of evidence to findings. METHOD:The databases PubMed, pscyINFO, SPORTdiscus, Med...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,meta分析
doi:10.1177/1545968318760728
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Functional magnetic resonance imaging (fMRI) of motor impairment after stroke strongly depends on patient effort and capacity to make a movement. Hence fMRI has had limited use in clinical management. Alternatively, resting-state fMRI (ie, with no task) can elucidate the brain's functional connections by det...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968312457827
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:A recent review showed that no existing instrument measured the entire spectrum of health-related quality of life (HRQOL) in stroke patients. However, the HRQOL in stroke patients (HRQOLISP) questionnaire is valid and exceptionally comprehensive. Founded on a holistic model of human life, it comprises both p...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究
doi:10.1177/1545968310369113
更新日期:2010-11-01 00:00:00
abstract:BACKGROUND:Environmental enrichment (EE) is a complex living milieu that has been shown to enhance functional recovery versus standard (STD) housing after experimental traumatic brain injury (TBI) and therefore may be considered a rodent correlate of rehabilitation. However, the typical EE paradigm consists of continuo...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968310390520
更新日期:2011-05-01 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
abstract:BACKGROUND:Hemiparetic gait following stroke requires substantial energy consumption, which would promote deconditioning and disability. Optimal modalities for decreasing this energy cost remain challenging. Excessive energy consumption, however, seems to be mainly due to extra positive muscle work to substantially lif...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309349927
更新日期:2010-05-01 00:00:00
abstract:PURPOSE:Walking speed is a cardinal indicator of poststroke gait performance; however, no consensus exists regarding the optimal treatment method(s) for its enhancement. The most widely accepted criterion for establishing the contribution of treatment to walking speed is the gain in speed. The actual speed, however, at...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,评审
doi:10.1177/1545968308315997
更新日期:2008-11-01 00:00:00
abstract::Approximately one-third of stroke patients suffer visual field impairment as a result of their strokes. However, studies using the visual pathway as a paradigm for studying poststroke recovery are limited. In this article, we propose that the visual pathway has many features that make it an excellent model system for ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968319827569
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:Individuals with stroke often sustain bone loss on the hemiparetic side and are prone to fragility fractures. Exercise training may be a viable way to promote bone mineral density (BMD) and geometry in this population. OBJECTIVE:This was a pilot study to evaluate the effects of a 6-month treadmill exercise ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309353326
更新日期:2010-05-01 00:00:00
abstract:BACKGROUND:Recovery of the sit-to-stand (StS) movement early after stroke could be improved by targeting physical therapy at the underlying movement deficits in those people likely to respond. AIM:To compare the movement characteristics of successful and failed StS movements in people early after stroke and identify w...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1177/1545968319846119
更新日期:2019-05-01 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:Long-term use of a foot-drop stimulator applying functional electrical stimulation (FES) to the common peroneal nerve improves walking performance even when the stimulator is off. This "therapeutic" effect might result from neuroplastic changes. OBJECTIVE:To determine the effect of long-term use of a foot-d...
journal_title:Neurorehabilitation and neural repair
pub_type: 临床试验,杂志文章
doi:10.1177/1545968309349939
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND:Perception of sound in the absence of an external auditory source is called tinnitus, which may negatively affect quality of life. Anodal transcranial direct current stimulation (tDCS) of the left temporoparietal area (LTA) was explored for tinnitus relief. OBJECTIVE:This pilot study examined tDCS dose (cur...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968312459908
更新日期:2013-02-01 00:00:00
abstract::This article summarizes the proceedings of an NIH workshop on timing, intensity, and duration of rehabilitation for acute stroke and hip fracture. Participants concentrated on methodological issues facing investigators and suggested priorities for future research in this area. ...
journal_title:Neurorehabilitation and neural repair
pub_type: 共识发展会议,杂志文章,评审
doi:10.1177/0888439003262041
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:Upper limb function plays a significant role in enhancing independence for individuals with tetraplegia. However, there is limited knowledge about the specific input of sensorimotor deficits on upper limb function. Thus the theoretical framework designed to develop the Graded Redefined Assessment of Strength...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968313490998
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Several pilot studies have evoked interest in robot-assisted therapy (RAT) in children with cerebral palsy (CP). OBJECTIVE:To assess the effectiveness of RAT in children with CP through a single-blind randomized controlled trial. PATIENTS AND METHODS:Sixteen children with CP were randomized into 2 groups. ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章,随机对照试验
doi:10.1177/1545968314541172
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND:Suppression of activity in the contralesional motor cortex may promote recovery of function after stroke. Furthermore, the known depressant effects of low-frequency repetitive transcranial magnetic stimulation (rTMS) can be increased and prolonged by preceding it with 6-Hz priming stimulation. OBJECTIVE:The...
journal_title:Neurorehabilitation and neural repair
pub_type: 临床试验,杂志文章
doi:10.1177/1545968307305458
更新日期:2008-03-01 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::Neuroplasticity is critical for learning, memory, and recovery of lost function following neurological damage. Noninvasive brain stimulation (NIBS) techniques can induce neuroplastic changes in the human cortex that are behaviorally relevant, raising the exciting possibility that these techniques might be therapeutica...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968314562649
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Neuromuscular electrical stimulation (NMES) of the muscles underlying the pharynx and faucial pillars affects the excitability of corticobulbar projections in a frequency- and duration-specific manner. The anterior hyomandibular (submental) muscles are primary targets for the clinical application of NMES to ...
journal_title:Neurorehabilitation and neural repair
pub_type: 杂志文章
doi:10.1177/1545968309360417
更新日期:2010-07-01 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