keyword
MENU ▼
Read by QxMD icon Read
search

Hemispheric stroke

keyword
https://www.readbyqxmd.com/read/29352054/increased-blood-brain-barrier-permeability-in-contralateral-hemisphere-predicts-worse-outcome-in-acute-ischemic-stroke-after-reperfusion-therapy
#1
Chang Liu, Shenqiang Yan, Ruiting Zhang, Zhicai Chen, Feina Shi, Ying Zhou, Meixia Zhang, Min Lou
AIMS: We sought to investigate the risk factors of blood-brain barrier (BBB) disruption, and its potential impact on 90-day clinical outcome in acute ischemic stroke (AIS) patients after reperfusion therapy. METHODS: Consecutive acute anterior circulation AIS patients imaged with computed tomographic perfusion (CTP) before reperfusion therapy were included. Tmax >6 s was used for the volumetric measurement of the hypoperfusion area. BBB permeability (BBBP) was calculated as the average relative permeability-surface area product (rPS) within the hypoperfusion region (rPShypo-i) and its contralateral mirror region (rPShypo-c) on CTP-derived PS color maps...
January 19, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29351881/phonotactic-processing-deficit-following-left-hemisphere-stroke
#2
Maryam Ghaleh, Laura M Skipper-Kallal, Shihui Xing, Elizabeth Lacey, Iain DeWitt, Andrew DeMarco, Peter Turkeltaub
The neural basis of speech processing is still a matter of great debate. Phonotactic knowledge-knowledge of the allowable sound combinations in a language-remains particularly understudied. The purpose of this study was to investigate the brain regions crucial to phonotactic knowledge in left-hemisphere stroke survivors. Results were compared to areas in which gray matter anatomy related to phonotactic knowledge in healthy controls. 44 patients with chronic left-hemisphere stroke, and 32 controls performed an English-likeness rating task on 60 auditory non-words of varying phonotactic regularities...
December 20, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29350775/randomized-trial-of-transcranial-dc-stimulation-for-post-stroke-dysphagia
#3
Sonja Suntrup-Krueger, Corinna Ringmaier, Paul Muhle, Andreas Wollbrink, Andre Kemmling, Uta Hanning, Inga Claus, Tobias Warnecke, Inga Teismann, Christo Pantev, Rainer Dziewas
OBJECTIVE: We evaluated whether transcranial direct current stimulation (tDCS) is able to enhance dysphagia rehabilitation following stroke. Besides relating clinical effects with neuroplastic changes in cortical swallowing processing we aimed to identify factors influencing treatment success. METHODS: In this double-blind, randomized study 60 acute dysphagic stroke patients received contralesional anodal (1 mA, 20 min) or sham tDCS on four consecutive days. Swallowing function was thoroughly assessed before and after the intervention using the validated Fiberoptic Endoscopic Dysphagia Severity Scale (FEDSS) and clinical assessment...
January 19, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29350576/posterior-reversible-encephalopathy-syndrome-in-stroke-prone-spontaneously-hypertensive-rats-on-high-salt-diet
#4
Fanny Herisson, Iris Zhou, Jerome Mawet, E Du, Arnavaz H Barfejani, Tao Qin, Marilyn J Cipolla, Philip Z Sun, Natalia S Rost, Cenk Ayata
Stroke-prone spontaneously hypertensive rats (SHRSP) on high-salt diet are characterized by extremely high arterial pressures, and have been endorsed as a model for hypertensive small vessel disease and vascular cognitive impairment. However, rapidly developing malignant hypertension is a well-known cause of posterior reversible encephalopathy syndrome (PRES) in humans, associated with acute neurological deficits, seizures, vasogenic cerebral edema and microhemorrhages. In this study, we aimed to examine the overlap between human PRES and SHRSP on high-salt diet...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29350575/the-neural-substrates-of-improved-phonological-processing-following-successful-treatment-in-a-case-of-phonological-alexia-and-agraphia
#5
Andrew T DeMarco, Stephen M Wilson, Kindle Rising, Steven Z Rapcsak, Pélagie M Beeson
Phonological deficits are common in aphasia after left-hemisphere stroke, and can have significant functional consequences for spoken and written language. While many individuals improve through treatment, the neural substrates supporting improvements are poorly understood. We measured brain activation during pseudoword reading in an individual through two treatment phases. Improvements were associated with greater activation in residual left dorsal language regions and bilateral regions supporting attention and effort...
January 19, 2018: Neurocase
https://www.readbyqxmd.com/read/29339771/etiology-of-language-network-changes-during-recovery-of-aphasia-after-stroke
#6
Casper A M M van Oers, H Bart van der Worp, L Jaap Kappelle, Mathijs A H Raemaekers, Willem M Otte, Rick M Dijkhuizen
Knowledge of spatiotemporal patterns of language network changes may help in predicting outcome in aphasic stroke patients. Here we assessed language function and performed functional MRI four times during one year to measure language network activation and cerebrovascular reactivity (with breath-holding) in twelve left-hemispheric stroke patients, of whom two dropped out before the final measurement, and eight age-matched controls. Language outcome was related to increase of activation in left and right posterior inferior temporal gyrus over the first year, while activation increase in right inferior frontal gyrus was inversely correlated to language recovery...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29338310/therapy-induced-plasticity-in-chronic-aphasia-is-associated-with-behavioral-improvement-and-time-since-stroke
#7
Priya Santhanam, E Susan Duncan, Steven L Small
Cortical reorganization after stroke is thought to underlie functional improvement. Patterns of reorganization may differ depending on the amount of time since the stroke or the degree of improvement. We investigated these issues in a study of brain connectivity changes with aphasia therapy. Twelve individuals with chronic aphasia participated in a 6-week trial of imitation-based speech therapy. We assessed improvement on a repetition test and analyzed effective connectivity during functional magnetic resonance imaging (fMRI) of a speech observation task before and after therapy...
January 16, 2018: Brain Connectivity
https://www.readbyqxmd.com/read/29338060/biofeedback-effect-of-hybrid-assistive-limb-in-stroke-rehabilitation-a-proof-of-concept-study-using-functional-near-infrared-spectroscopy
#8
Kazuya Saita, Takashi Morishita, Hisatomi Arima, Koichi Hyakutake, Toshiyasu Ogata, Kenji Yagi, Etsuji Shiota, Tooru Inoue
INTRODUCTION: Robot-assisted rehabilitation has been increasingly drawing attention in the field of neurorehabilitation. The hybrid assistive limb (HAL) is an exoskeleton robot developed based on the "interactive biofeedback" theory, and several studies have shown its efficacy for patients with stroke. We aimed to investigate the mechanisms of the facilitative effect of neurorehabilitation using a single-joint HAL (HAL-SJ) and functional near-infrared spectroscopy (fNIRS). MATERIALS AND METHODS: Subacute stroke patients admitted to our hospital were assessed in this study for HAL eligibility...
2018: PloS One
https://www.readbyqxmd.com/read/29338007/bilateral-changes-in-afterhyperpolarization-duration-of-spinal-motoneurones-in-post-stroke-patients
#9
Bożenna Kuraszkiewicz, Jia-Jin Jason Chen, Hanna Goszczyńska, Yu-Lin Wang, Maria Piotrkiewicz
This paper extends the observations presented in the previously published work on the afterhyperpolarization (AHP) duration changes in motoneurones (MNs) on the paretic (more affected) side of 11 post-stroke patients by the same analysis on the non-paretic (less-affected) side. The estimated AHP duration for patients' MNs supplying more-affected muscles was significantly longer than control values and the elongation decreased with patient age and disorder duration. For MNs supplying less-affected muscles, dependency of AHP duration on age was closer to the control data, but the scatter was substantially bigger...
2018: PloS One
https://www.readbyqxmd.com/read/29332009/poststroke-psychosis-a-systematic-review
#10
REVIEW
Helle Stangeland, Vasiliki Orgeta, Vaughan Bell
A preregistered systematic review of poststroke psychosis examining clinical characteristics, prevalence, diagnostic procedures, lesion location, treatments, risk factors and outcome. Neuropsychiatric outcomes following stroke are common and severely impact quality of life. No previous reviews have focused on poststroke psychosis despite clear clinical need. CINAHL, MEDLINE and PsychINFO were searched for studies on poststroke psychosis published between 1975 and 2016. Reviewers independently selected studies for inclusion, extracted data and rated study quality...
January 13, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29329693/bold-fmri-signal-in-stroke-patients-and-its-importance-for-prognosis-in-the-subacute-disease-period-preliminary-report
#11
Anetta Lasek-Bal, Joanna Kidoń, Monika Błaszczyszyn, Bartłomiej Stasiów, Amadeusz Żak
Functional magnetic resonance imaging (fMRI) allows for the assessment of neuronal activity through the blood-level-dependent signal. The purpose of study was to evaluate the pattern of brain activity in fMRI in patients with ischemic stroke and to assess the potential relationship between the activity pattern and the neurological/functional status. METHODS: The fMRI was performed in patients up to 4th day of stroke. All the patients were analyzed according to NIHSS on 1st day and mRankin scale on 14th day of stroke, followed by analyzing of fMRI signal...
December 24, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29329286/is-the-proportional-recovery-rule-applicable-to-the-lower-limb-after-a-first-ever-ischemic-stroke
#12
Janne M Veerbeek, Caroline Winters, Erwin E H van Wegen, Gert Kwakkel
OBJECTIVE: To investigate (a) the applicability of the proportional recovery rule of spontaneous neurobiological recovery to motor function of the paretic lower extremity (LE); and (b) the presence of fitters and non-fitters of this prognostic rule poststroke. When present, the clinical threshold for fitting nor non-fitting would be determined, as well as within-subject generalizability to the paretic upper extremity (UE). METHODS: Prospective cohort study in which the Fugl-Meyer Assessment (FMA)-LE and FMA-UE were measured <72 hours and 6 months poststroke...
2018: PloS One
https://www.readbyqxmd.com/read/29327485/right-left-propensity-of-cardiogenic-cerebral-embolism-in-standard-versus-bovine-aortic-arch-variant
#13
Menachem Gold, Mojdeh Khamesi, Mangaiyarkkarasi Sivakumar, Vijaya Natarajan, Hooman Motahari, Nicholas Caputo
INTRODUCTION: Left-hemispheric ischemic strokes are more frequent overall and often have a worse outcome than their right-hemispheric counterparts. We hypothesized that the right-left propensity of CE cerebral infarcts differs between patients with standard and bovine arch variants. METHODS: We retrospectively identified all patients with acute stroke of the anterior circulation admitted to our primary stroke center between January 2011 and June 2017 who had moderate- to high-risk cardio-embolic sources according to the SSS-TOAST classification...
January 12, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29321138/sensorimotor-functional-and-structural-networks-after-intracerebral-stem-cell-grafts-in-the-ischemic-mouse-brain
#14
Claudia Green, Anuka Minassian, Stefanie Vogel, Michael Diedenhofen, Andreas Beyrau, Dirk Wiedermann, Mathias Hoehn
Past investigations on stem cell mediated recovery after stroke have limited their focus on the extent and morphological development of the ischemic lesion itself over time or on the integration capacity of the stem cell graft ex vivo However, an assessment of the long-term functional and structural improvement in vivo is essential to reliably quantify the regenerative capacity of cell implantation after stroke.We induced ischemic stroke in nude mice and implanted human neural stem cells (H9 derived) into the ipsilateral cortex in the acute phase...
January 10, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29317222/do-performance-measures-of-strength-balance-and-mobility-predict-quality-of-life-and-community-reintegration-after-stroke
#15
Joshua W Cohen, Tanya D Ivanova, Brenda Brouwer, Kimberly J Miller, Dianne Bryant, S Jayne Garland
OBJECTIVE: To investigate the extent to which physical performance measures of strength, balance and mobility taken at discharge from inpatient stroke rehabilitation can predict health-related quality of life (HRQoL) and community reintegration after 6 months. DESIGN: Longitudinal Study SETTING: University Laboratory PARTICIPANTS: Seventy-five adults recruited within one month following discharge home from inpatient stroke rehabilitation. Inclusion criteria were: major unilateral hemispheric stroke, English speaking, able to communicate, discharged home...
January 6, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29313944/regulatory-b-cells-in-experimental-stroke
#16
REVIEW
Hilary A Seifert, Arthur A Vandenbark, Halina Offner
Current treatment options for human stroke are limited mainly to the modestly effective infusion of tissue plasminogen activator (tPA), with additional improvement of functional independence and higher rates of angiographic revascularization observed after mechanical thrombectomy. However, new therapeutic strategies that address post-stroke immune-mediated inflammatory responses are urgently needed. Recent studies in experimental stroke have firmly implicated immune mechanisms in the propagation and partial resolution of CNS damage after the ischemic event...
January 3, 2018: Immunology
https://www.readbyqxmd.com/read/29312600/mild-hypothermia-modulates-the-expression-of-nestin-and-caspase-3-in-the-sub-granular-zone-and-improves-neurological-outcomes-in-rats-with-ischemic-stroke
#17
Dan Yu, Xueying Wang, Feng Zhou, Liang Wang, Guoshuai Yang, Wei Zhong, Ying Li, Zhiping Zhou, Aiyue Wang, Yanhui Zhou
We assessed neurological outcomes, infarct volume, and the expression of nestin and caspase-3 in the hippocampal dentate gyrus following middle cerebral artery occlusion (MCAO) followed by reperfusion, with mild hypothermia (MH) treatment at the onset of ischemia in a MCAO rat model. Reperfusion began 2 hours after the MCAO model was set-up. MH treatment began at the onset of ischemia and was maintained for 4 hours. We evaluated neurological deficit score, brain infarct volumes, along with the immunohistochemical staining of nestin and caspase-3 in the sub-granular zone of the injured hemisphere on the 1st, 3rd, 7th, and 14th day after the onset of ischemia...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29310519/intranasal-stem-cell-treatment-as-a-novel-therapy-for-subarachnoid-hemorrhage
#18
Cora H Nijboer, Elke Kooijman, Cindy T van Velthoven, Erik Van Tilborg, Ivo A Tiebosch, Niels Eijkelkamp, Rick M Dijkhuizen, Jozef Kesecioglu, Cobi Heijnen
Subarachnoid hemorrhage (SAH) represents a major health problem in Western society due to high mortality and morbidity, and the relative young age of patients. Currently, efficacious therapeutic options are very limited. Mesenchymal stem cell (MSC) administration has been shown to improve functional outcome and lesion size in experimental models of stroke and neonatal hypoxic-ischemic brain injury. Here we studied the therapeutic potential of intranasally administered bone marrow-derived MSCs relatively late post-insult using a rat endovascular puncture model for SAH...
January 8, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29303450/subcutaneous-bone-flap-storage-after-emergency-craniectomy-cost-effectiveness-and-rate-of-resorption
#19
Griffin Ernst, Fares Qeadan, Andrew P Carlson
OBJECTIVE Decompressive craniectomy is used for uncontrolled intracranial pressure in traumatic brain injury and malignant hemispheric stroke. Subcutaneous preservation of the autologous bone flap in the abdomen is a simple, portable technique but has largely been abandoned due to perceived concerns of resorption. The authors sought to characterize their experience with subcutaneous preservation of the bone flap and cranioplasty. METHODS The authors performed a retrospective single-institution review of subcutaneous preservation of the autologous bone flap after decompressive craniectomy from 2005 to 2015...
January 5, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29301545/personalized-upper-limb-training-combined-with-anodal-tdcs-for-sensorimotor-recovery-in-spastic-hemiparesis-study-protocol-for-a-randomized-controlled-trial
#20
Mindy F Levin, Melanie C Baniña, Silvi Frenkel-Toledo, Sigal Berman, Nachum Soroker, John M Solomon, Dario G Liebermann
BACKGROUND: Recovery of voluntary movement is a main rehabilitation goal. Efforts to identify effective upper limb (UL) interventions after stroke have been unsatisfactory. This study includes personalized impairment-based UL reaching training in virtual reality (VR) combined with non-invasive brain stimulation to enhance motor learning. The approach is guided by limiting reaching training to the angular zone in which active control is preserved ("active control zone") after identification of a "spasticity zone"...
January 4, 2018: Trials
keyword
keyword
90647
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"