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Hemispheric stroke

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https://www.readbyqxmd.com/read/29151151/long-term-treatment-of-diabetic-rats-with-vanadyl-sulfate-or-insulin-attenuate-acute-focal-cerebral-ischemia-reperfusion-injury-via-their-antiglycemic-effect
#1
Hossein Ahmadi-Eslamloo, Gholam Abbas Dehghani, Seyed Mostafa Shid Moosavi
It is well-known that patients with diabetes mellitus have worse clinical outcomes following acute ischemic stroke. The intensifying effects of diabetes on ischemic brain injury have been shown to be mostly due to hyperglycemia, rather than the lack of insulin direct effects on brain. It is also well-approved that vanadium compounds have insulin-like and anti-diabetic effects, and the present study was designed to compare the protective effects of diabetes treatment with vanadium or insulin on ischemic/reperfused brain injury...
November 19, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29148900/combined-interventional-and-surgical-treatment-of-tandem-middle-cerebral-artery-embolus-and-internal-carotid-artery-occlusion-case-report
#2
Mark B Frenkel, Jaclyn J Renfrow, Jasmeet Singh, Nitin Garg, Stacey Q Wolfe
Tandem internal carotid artery (ICA) origin occlusion and middle cerebral artery (MCA) thromboembolism is a life-threatening condition with poor neurological outcome. The authors report on a patient presenting with acute ischemic stroke from a tandem ICA and MCA occlusion with penumbra. Emergency MCA mechanical thrombectomy was performed through percutaneous cervical ICA access due to the inability to cross the cervical carotid occlusion. Emergency carotid endarterectomy to reperfuse the poorly collateralized hemisphere and repair the ICA access site was performed 2 hours after completion of tissue plasminogen activator (tPA) infusion...
November 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29147145/long-range-temporal-correlations-of-broadband-eeg-oscillations-for-depressed-subjects-following-different-hemispheric-cerebral-infarction
#3
Dongzhe Hou, Chunfang Wang, Yuanyuan Chen, Weijie Wang, Jingang Du
Abnormal long-range temporal correlation (LRTC) in EEG oscillation has been observed in several brain pathologies and mental disorders. This study examined the relationship between the LRTC of broadband EEG oscillation and depression following cerebral infarction with different hemispheric lesions to provide a novel insight into such depressive disorders. Resting EEGs of 16 channels in 18 depressed (9 left and 9 right lesions) and 21 non-depressed (11 left and 10 right lesions) subjects following cerebral infarction and 19 healthy control subjects were analysed by means of detrended fluctuation analysis, a quantitative measurement of LRTC...
December 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/29146874/imaging-characteristics-of-venous-parenchymal-abnormalities
#4
Audrey Arnoux, Aude Triquenot-Bagan, Daniela Andriuta, David Wallon, Evelyne Guegan-Massardier, Claire Leclercq, Olivier Martinaud, Mélody Castier-Amouyel, Olivier Godefroy, Jean-Marc Bugnicourt
BACKGROUND AND PURPOSE: There are few published data on the patterns of parenchymal imaging abnormalities in a context of cerebral venous thrombosis (CVT). The objectives of the present study were to describe the patterns of parenchymal lesions associated with CVT and to determine the lesion sites. METHODS: We included 44 consecutively hospitalized patients with CVT and parenchymal lesions on magnetic resonance imaging. The diagnosis of CVT had been confirmed by magnetic resonance imaging/magnetic resonance venography...
November 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29145166/revisiting-interhemispheric-imbalance-in-chronic-stroke-a-tdcs-study
#5
Alana B McCambridge, James W Stinear, Winston D Byblow
OBJECTIVE: Chronic stroke patients with moderate-severe motor impairment may have an increased reliance on contralesional vs ipsilesional motor areas to control the paretic arm. We hypothesised that increasing contralesional excitability with anodal transcranial direct current stimulation (a-tDCS) would benefit motor performance in patients with moderate-severe impairment. METHODS: Ten patients with motor impairment at the chronic stage after stroke received a-tDCS, cathodal (c-tDCS) and sham with the target electrode over contralesional motor cortex (M1)...
October 28, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29130824/longitudinal-structural-and-functional-differences-between-proportional-and-poor-motor-recovery-after-stroke
#6
Adrian G Guggisberg, Pierre Nicolo, Leonardo G Cohen, Armin Schnider, Ethan R Buch
BACKGROUND: Evolution of motor function during the first months after stroke is stereotypically bifurcated, consisting of either recovery to about 70% of maximum possible improvement ("proportional recovery, PROP") or in little to no improvement ("poor recovery, POOR"). There is currently no evidence that any rehabilitation treatment will prevent POOR and favor PROP. OBJECTIVE: To perform a longitudinal and multimodal assessment of functional and structural changes in brain organization associated with PROP...
November 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29122653/validation-of-an-automated-bilateral-feet-cold-pressor-test
#7
Petra Bachmann, Xinwei Zhang, Mauro F Larra, Dagmar Rebeck, Karsten Schönbein, Klaus P Koch, Hartmut Schächinger
The Cold Pressor Test (CPT) is often used in psychobiological research. However, the classical CPT version (unilateral hand immersion into ice-water) involves some disadvantages: hands may be needed for further applications, attentional drift towards the affected sensory hemi-field and/or physiological activation of the contralateral hemisphere may produce a laterality bias. Furthermore, instruction-induced motor activity may bias physiologic reactivity. To avoid these problems, a fully automated bilateral feet CPT was developed and tested for validity and feasibility...
November 6, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29120940/bilateral-hemispheric-changes-and-language-outcomes-in-chronic-left-hemisphere-stroke
#8
Won Min Lee, Sunghyon Kyeong, Eun Young Park, Hee Seung Yang, Hyunkoo Kang, Dae Hyun Kim
The role of the right hemisphere in recovery of language function after left hemisphere stroke remains unclear. This prospective study aimed to determine the relationship between bilateral hemispheric changes and severity of aphasia in patients with chronic left hemisphere stroke. Twenty-three patients with left hemisphere stroke with aphasia and 10 healthy control patients underwent high-resolution T1-weighted and diffusion tensor imaging. Patients with aphasia were assessed using the Korean version of the Western Aphasia Battery, and severity of aphasia was quantified in terms of aphasia quotient; patients were classified into two groups - the mild-to-moderate and severe groups - on the basis of severity of aphasia...
November 8, 2017: Neuroreport
https://www.readbyqxmd.com/read/29110883/linear-and-nonlinear-parameters-of-heart-rate-variability-in-ischemic-stroke-patients
#9
V Constantinescu, D Matei, V Costache, D Cuciureanu, C Arsenescu-Georgescu
INTRODUCTION: Cardiovascular system presents cortical modulation. Post-stroke outcome can be highly influenced by autonomic nervous system disruption. Heart rate variability (HRV) analysis is a simple non-invasive method to assess sympatho-vagal balance. OBJECTIVES: The purpose of this study was to investigate cardiac autonomic activity in ischemic stroke patients and to asses HRV nonlinear parameters beside linear ones. METHODS: We analyzed HRV parameters in 15 right and 15 left middle cerebral artery ischemic stroke patients, in rest condition and during challenge (standing and deep breathing)...
October 11, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29107638/herniation-despite-decompressive-hemicraniectomy-in-large-hemispherical-ischemic-strokes
#10
Archana Hinduja, Rohan Samant, Dongxia Feng, Yousef Hannawi
BACKGROUND: Despite decompressive hemicraniectomy (DHC), progressive herniation resulting in death has been reported following middle cerebral artery (MCA) strokes. We aimed to determine the surgical parameters measured on brain computed tomography (CT) scan that are associated with progressive herniation despite DHC in large MCA strokes. METHODS: Retrospective chart review of medical records of patients with malignant hemispheric infarction who underwent DHC for cerebral edema was performed...
October 26, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29105618/hemispatial-neglect-following-right-hemisphere-stroke-clinical-course-and-sensitivity-of-diagnostic-tasks
#11
Marianne E Klinke, Haukur Hjaltason, Guðný Berg F Ra Tryggvadóttir, Helga Jónsdóttir
Background Stroke patients with severe symptoms of hemispatial neglect (HN) are known to experience a weaker recovery than those less affected from the outset. Correct identification of HN is therefore important throughout the course of rehabilitation. Objectives To explore: (i) the course of clinical symptoms in stroke patients with moderate/severe HN from acute setting to home, (ii) changes in sensitivity of diagnostic tasks over time, and (iii) agreement between the researcher's and patients' HN assessments...
November 4, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/29103480/risk-factors-analysis-of-mirror-aneurysms-a-multi-center-retrospective-study-based-on-clinical-and-demographic-profile-of-patients
#12
Zhong-Qing Huang, Xin-Wei Zhou, Zhong-Jun Hou, Sui-Qiao Huang, Zhi-Hua Meng, Xian-Long Wang, Hao Yu, Lv-Jin Feng, Qiu-Jing Wang, Ping-An Li, Zhi-Bo Wen
As a special subgroup of multiple intracranial aneurysms, mirror aneurysms are located bilaterally on the corresponding intracranial arteries. The current study sought to compare the clinical and demographic features of patients harboring mirror aneurysm, and to elucidate the corresponding risk factors. We performed a retrospective cohort study of 2641 intracranial aneurysms patients, who were admitted to our hospitals between January 2005 and June 2014. Patients were subdivided into three groups based on the inclusion criteria: (i) single (n=2250); (ii) non-mirror multiple (n=285); and (iii) mirror aneurysms (n=106)...
November 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29090015/effects-of-pretreatment-with-methanol-extract-of-peucedani-radix-on-transient-ischemic-brain-injury-in-mice
#13
So-Youn Jung, Kyoung-Min Kim, Suin Cho, Sehyun Lim, Chiyeon Lim, Young Kyun Kim
BACKGROUND: Stroke is the second most common cause of death and may result in various disabilities; thus, identification of neuroprotective therapeutic agents is important. Peucedani Radix (PR), the root of Angelica decursiva, is a well-known remedy for damp and phlegm in Korean medicine and has also been shown to exert antioxidant and anti-inflammatory activities. This study was performed to investigate the mechanism underlying the anti-inflammatory effect of methanol extract of PR (PRex) on cerebral ischemic injury...
2017: Chinese Medicine
https://www.readbyqxmd.com/read/29079503/role-of-dopamine-on-functional-recovery-in-the-contralateral-hemisphere-after-focal-stroke-in-the-somatosensory-cortex
#14
Kisho Obi, Izuki Amano, Yusuke Takatsuru
Functional recovery after a stroke is important for patients' quality of life. Not only medical care during the acute phase, but also rehabilitation during the chronic phase after a stroke is important. However, the mechanisms underlying functional recovery, particularly the chronic phase after stroke, are still not fully understood. Thus, further basic study on brain after focal stroke is necessary. In this study, we found that the concentration of dopamine (DA) increased during first week after a stroke in the hemisphere contralateral in the site of stroke by in vivo microdialysis...
October 24, 2017: Brain Research
https://www.readbyqxmd.com/read/29076767/relationship-between-somatosensory-event-related-potential-n140-aberrations-and-hemispatial-agnosia-in-patients-with-stroke-a-preliminary-study
#15
Tomoyuki Ueno, Yasushi Hada, Yukiyo Shimizu, Thoru Yamada
PURPOSE: The somatosensory event-related potential N140 is thought to be related to selective attention. This study aimed to compare the somatosensory event-related potential N140 in healthy subjects to that in patients with stroke to determine whether N140 and attentiveness are associated in patients with stroke with or without hemispatial agnosia. MATERIALS AND METHODS: Normal somatosensory event-related potential N140 values were determined using data from ten healthy subjects...
October 27, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29075559/the-association-between-lesion-location-sex-and-poststroke-depression-meta-analysis
#16
REVIEW
Ying Zhang, Hui Zhao, Yan Fang, Suishan Wang, Haiyun Zhou
BACKGROUND: Poststroke depression (PSD) is a common form of stroke patients. Whether the risk of PSD is influenced by the stroke lesion location and sex remains a matter of debate. The objective of this study was to examine the association between the risk of PSD and the stroke lesion location and sex by performing a systematic meta-analysis. METHODS: Subgroup analyses were performed according to the time interval after stroke onset to assessment for PSD. A total of 31 reports involving 5,309 subjects (for lesion location analysis) and 5,489 subjects (for sex analysis) suffering from stroke were included in this meta-analysis...
October 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29075345/factors-that-influence-the-severity-of-post-stroke-depression
#17
S Ilut, A Stan, A Blesneag, V Vacaras, S Vesa, L Fodoreanu
AIM: The aim of this paper was to investigate whether the extent of neurological impairment, the location of ischemic lesions due to stroke are associated with the severity of post-stroke depression. MATERIALS AND METHODS: The study included 82 patients, who were diagnosed with acute ischemic stroke and post-stroke depression and were admitted to the Neurology Clinic of Cluj-Napoca County Emergency Hospital between 2009 and 2011. A head MRI was performed with a 1...
July 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/29074118/an-update-on-the-incidence-of-perioperative-outcomes-after-carotid-endarterectomy-stratified-by-type-of-preprocedural-neurologic-symptom
#18
Alexander B Pothof, Emma S Zwanenburg, Sarah E Deery, Thomas F X O'Donnell, Gert J de Borst, Marc L Schermerhorn
OBJECTIVE: Perioperative complications after carotid endarterectomy (CEA) have decreased over time. Therefore, we aimed to provide an update on 30-day outcomes after CEA, stratified by type of preprocedural neurologic symptom. METHODS: We included all CEAs from the Targeted Vascular module of the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP, 2011-2015) and stratified patients based on type of preprocedural neurologic symptom, that is, asymptomatic, ocular transient ischemic attack (TIA), hemispheric TIA, and stroke...
October 23, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29072540/cognitive-performance-and-aphasia-recovery
#19
José Fonseca, Ana Raposo, Isabel Pavão Martins
Objectives This study assessed cognitive performance of subjects with aphasia during the acute stage of stroke and evaluated how such performance relates to recovery at 3 months. Materials & methods Patients with aphasia following a left hemisphere stroke were evaluated during the first (baseline) and the fourth-month post onset. Assessment comprised non-verbal tests of attention/processing speed (Symbol Search, Cancelation Task), executive functioning (Matrix Reasoning, Tower of Hanoi, Clock Drawing, Motor Initiative), semantic (Camel and Cactus Test), episodic and immediate memory (Memory for Faces Test, 5 Objects Memory Test, and Spatial Span...
October 26, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/29065349/assessing-muscle-compliance-in-stroke-with-the-myotonometer
#20
Xiaoyan Li, Henry Shin, Ya Zong, Sheng Li, Ping Zhou
BACKGROUND: This study explores changes of the intrinsic biomechanical property in the biceps brachii muscle after a hemispheric stroke using the Myotonometry technique. METHODS: Nineteen subjects with chronic hemiplegia participated in the study. Myotonometer was used to measure tissue displacement when compression force was applied at 8 levels from 2.45N to 19.6N. Muscle displacement and compliance were determined and averaged over multiple trials. FINDINGS: Statistical analysis indicated a significant decrease in muscle displacement and compliance in the spastic muscles compared with the contralateral side (muscle displacements: spastic: 4...
October 15, 2017: Clinical Biomechanics
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