scholarly journals Cerebrovascular Accidents In Myopathies

2017 ◽  
pp. 51
Author(s):  
Farzad Fatehi
Keyword(s):  
Ischemic Stroke ◽  
Vasogenic Edema ◽  
Clinical Manifestations ◽  
Mitochondrial Disorders ◽  
Cerebrovascular Accidents ◽  
Apparent Diffusion ◽  
Metabolic Stroke ◽  
Diagnosis Therapy ◽  
Apparent Diffusion Coefficient Mapping ◽  
Anti Phospholipid Syndrome

 Several types of stroke in myopathies are described: ischemic, metabolic, or cryptogenic. Ischemic stroke may be categorized as cardioembolic, angiopathic, hemodynamic, or thrombophilic. Cardiac involvement in the form of atrial fibrillation/flutter, dilated cardiomyopathy, or non-compaction Cardioembolic could ensue in stroke. Angiopathic stroke occurs provided that there is atherosclerosis or mitochondrial disorders. Thrombophilic stroke may happen in polymyositis or dermatomyositis along with anti-phospholipid syndrome. Metabolic stroke usually manifests as stroke-like episode and is a distinct feature of various mitochondrial disorders, principally MELAS syndrome. The clinical manifestations are as a result of a vasogenic edema, demonstrating as hyperintensity on T2, DWI, and apparent diffusion coefficient mapping. Differentiation between ischemic and metabolic stroke is essential in terms of diagnosis, therapy, and prognosis. In conclusion, ischemic stroke attributable to cardioembolism, arteriopathy, or thrombophilia are occasional events in myopathies, but metabolic stroke is a frequent feature of mitochondrial disorders.                      

scholarly journals Central Nervous System Imaging in Mitochondrial Disorders

2009 ◽  
Vol 36 (2) ◽  
pp. 143-153 ◽  
Author(s):  
Josef Finsterer
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Imaging Techniques ◽  
Vasogenic Edema ◽  
Clinical Manifestations ◽  
White Matter Lesions ◽  
Symptomatic Treatment ◽  
Mitochondrial Disorders ◽  
Diffuse White Matter ◽  
Diffuse Atrophy

Imaging of central-nervous-system (CNS) abnormalities is important in patients with mitochondrial disorders (MCDs) since the CNS is the organ second most frequently affected in MCDs and some of them are potentially treatable. Clinically relevant imaging techniques for visualization of CNS abnormalities in MCDs are computed tomography, magnetic resonance imaging, and MR-spectroscopy. The CNS abnormalities in MCDs visualized by imaging techniques include stroke-like lesions with cytotoxic or vasogenic edema, laminar cortical necrosis, basal ganglia necrosis, focal or diffuse white matter lesions, focal or diffuse atrophy, intra-cerebral calcifications, cysts, lacunas, hypometabolisation, lactacidosis, hemorrhages, cerebral hypo- or hyperperfusion, intra-cerebral artery stenoses, or moyamoya syndrome. The CNS lesions may proceed with or without clinical manifestations, why neuroimaging should be routinely carried out in all MCDs to assess the degree of CNS involvement. Some of these lesions may remain unchanged for years, some may show contiguous spread and progression, but some may even disappear, spontaneously or in response to medication. Dynamics of Stroke-like lesions may be positively influenced by L-arginine, dichloracetate, steroids, edavarone, or antiepileptics. Symptomatic treatment of CNS abnormalities in MCD patients may positively influence their outcome.

Cerebrolysin and Aquaporin 4 Inhibition Improve Pathological and Motor Recovery after Ischemic Stroke

2018 ◽  
Vol 17 (4) ◽  
pp. 299-308 ◽  
Author(s):  
Bogdan Catalin ◽  
Otilia-Constantina Rogoveanu ◽  
Ionica Pirici ◽  
Tudor Adrian Balseanu ◽  
Adina Stan ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Vasogenic Edema ◽  
Artery Occlusion ◽  
Aquaporin 4 ◽  
Hypertonic Solution ◽  
Water Metabolism ◽  
Scar Region ◽  
Function Preservation ◽  
Neurotropic Factor ◽  
Cerebral Artery Occlusion

Background: Edema represents one of the earliest negative markers of survival and consecutive neurological deficit following stroke. The mixture of cellular and vasogenic edema makes treating this condition complicated, and to date, there is no pathogenically oriented drug treatment for edema, which leaves parenteral administration of a hypertonic solution as the only non-surgical alternative. Objective: New insights into water metabolism in the brain have opened the way for molecular targeted treatment, with aquaporin 4 channels (AQP4) taking center stage. We aimed here to assess the effect of inhibiting AQP4 together with the administration of a neurotropic factor (Cerebrolysin) in ischemic stroke. Methods: Using a permanent medial cerebral artery occlusion rat model, we administrated a single dose of the AQP4 inhibitor TGN-020 (100 mg/kg) at 15 minutes after ischemia followed by daily Cerebrolysin dosing (5ml/kg) for seven days. Rotarod motor testing and neuropathology examinations were next performed. Results: We showed first that the combination treatment animals have a better motor function preservation at seven days after permanent ischemia. We have also identified distinct cellular contributions that represent the bases of behavior testing, such as less astrocyte scarring and a larger neuronalsurvival phenotype rate in animals treated with both compounds than in animals treated with Cerebrolysin alone or untreated animals. Conclusion: Our data show that water diffusion inhibition and Cerebrolysin administration after focal ischemic stroke reduces infarct size, leading to a higher neuronal survival in the peri-core glial scar region.

The physiopathology of spontaneous hemorrhagic stroke: a systematic review

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Alcivan Batista de Morais Filho ◽  
Thiago Luis de Holanda Rego ◽  
Letícia de Lima Mendonça ◽  
Sulyanne Saraiva de Almeida ◽  
Mariana Lima da Nóbrega ◽  
...  
Keyword(s):  
Risk Factors ◽  
Systematic Review ◽  
Ischemic Stroke ◽  
Subarachnoid Hemorrhage ◽  
Natural History ◽  
Hemorrhagic Stroke ◽  
Recent Literature ◽  
Clinical Manifestations ◽  
The Road ◽  
History Of

Abstract Hemorrhagic stroke (HS) is a major cause of death and disability worldwide, despite being less common, it presents more aggressively and leads to more severe sequelae than ischemic stroke. There are two types of HS: Intracerebral Hemorrhage (ICH) and Subarachnoid Hemorrhage (SAH), differing not only in the site of bleeding, but also in the mechanisms responsible for acute and subacute symptoms. This is a systematic review of databases in search of works of the last five years relating to the comprehension of both kinds of HS. Sixty two articles composed the direct findings of the recent literature and were further characterized to construct the pathophysiology in the order of events. The road to the understanding of the spontaneous HS pathophysiology is far from complete. Our findings show specific and individual results relating to the natural history of the disease of ICH and SAH, presenting common and different risk factors, distinct and similar clinical manifestations at onset or later days to weeks, and possible complications for both.

scholarly journals Adjunctive cytoprotective therapies in acute ischemic stroke: a systematic review

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
I. A. Mulder ◽  
E. T. van Bavel ◽  
H. E. de Vries ◽  
J. M. Coutinho
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Nitrosative Stress ◽  
Vasogenic Edema ◽  
Treatment Strategies ◽  
Oxidative And Nitrosative Stress ◽  
Main Trial ◽  
Safety Issues ◽  
Favourable Safety Profile ◽  
Neuro Inflammation

AbstractWith the introduction of endovascular thrombectomy (EVT), a new era for treatment of acute ischemic stroke (AIS) has arrived. However, despite the much larger recanalization rate as compared to thrombolysis alone, final outcome remains far from ideal. This raises the question if some of the previously tested neuroprotective drugs warrant re-evaluation, since these compounds were all tested in studies where large-vessel recanalization was rarely achieved in the acute phase. This review provides an overview of compounds tested in clinical AIS trials and gives insight into which of these drugs warrant a re-evaluation as an add-on therapy for AIS in the era of EVT. A literature search was performed using the search terms “ischemic stroke brain” in title/abstract, and additional filters. After exclusion of papers using pre-defined selection criteria, a total of 89 trials were eligible for review which reported on 56 unique compounds. Trial compounds were divided into 6 categories based on their perceived mode of action: systemic haemodynamics, excitotoxicity, neuro-inflammation, blood–brain barrier and vasogenic edema, oxidative and nitrosative stress, neurogenesis/-regeneration and -recovery. Main trial outcomes and safety issues are summarized and promising compounds for re-evaluation are highlighted. Looking at group effect, drugs intervening with oxidative and nitrosative stress and neurogenesis/-regeneration and -recovery appear to have a favourable safety profile and show the most promising results regarding efficacy. Finally, possible theories behind individual and group effects are discussed and recommendation for promising treatment strategies are described.

scholarly journals KORELASI KADAR LAJU ENDAP DARAH DENGAN NILAI ASPECTS PADA PASIEN STROKE ISKEMIK

2015 ◽  
Vol 38 (1) ◽  
pp. 26
Author(s):  
Ratih Ismiranti Murni ◽  
Dwi Pudjonarko ◽  
Bambang Satoto ◽  
Sukma Imawati
Keyword(s):  
Diabetes Mellitus ◽  
Ischemic Stroke ◽  
Ct Scan ◽  
Acute Ischemic Stroke ◽  
Clinical Manifestations ◽  
Stroke Patients ◽  
Cross Sectional ◽  
Emergency Imaging ◽  
Brain Ct Scan ◽  
Relationship Of

AbstrakStroke adalah penyebab utama ke-3 kematian di Amerika Serikat. Stroke iskemik adalah kondisi kompleks dengan etiologi dan manifestasi klinis bervariasi. CT Scan kepala adalah pencitraan darurat stroke membedakan dengan perdarahan intrakranial. Beberapa peneliti mengemukakan adanya korelasi independent dan hubungan pemeriksaan rutin biomarkers pada pasien stroke iskemik akut termasuk di dalamnya parameter inflamasi yang berperan pada patofisiologi iskemia otak. Tujuan penelitian ini mengetahui korelasi kadar LED dengan penilaian ASPECTS pada pasien stroke iskemik. Penelitian ini merupakan penelitian observasional analitik belah lintang dari catatan rekam medik. Selama periode Desember 2012 - Oktober 2014. Didapatkan 16 sampel yang memenuhi kriteria inklusi dan ekslusi. Dengan beberapa karakteristik subyek penelitian meliputi usia, jenis kelamin, hipertensi, diabetes mellitus, dislipidemia, kadar LED 1 dan 2, awitan stroke iskemik akut. Uji statistik Rank Spearman’s,dan uji bivariat maupun multivariat. Didapatkan hasil tidak ada korelasi antara nilai ASPECTS dengan kadar LED dan faktor yang mempengaruhi nilai ASPECTS.AbstractStroke is the third major cause of death in United States. Ischemic stroke results from complex conditions with various etiologies and clinical manifestations. Brain CT Scan is a stroke emergency imaging to differentiate intracranial hemorrhage. Several studies claimed there were independent correlation and relationship of biomarker in routine examination of acute ischemic stroke patients including inflammation parameters that contribute to the pathophysiology of brain ischemic. The purpose in this study was to identify correlation between ESR level and ASPECTS in ischemic stroke patients. The method of study was analytical observational cross sectional taken from medical record. It was performed in 16 patients that fulfill the inclusion and exclusion criteria during December 2012- October 2014. Several characteristics of subject that affecting ASPECTS included age, gender, hypertention, diabetes mellitus, dyslipidemia, ESR level 1 and 2, and onset of acute ischemic stroke were assessed. Analytical test was performed by Rank spearman’s test and multivariate test. There was no correlation between ASPECTS with ESR level and factors that affect ASPECTS.

scholarly journals Apparent Diffusion Coefficient Mapping Using a Multi-Shot Spiral MRI Sequence of the Rat Brain

2014 ◽  
Vol 04 (01) ◽  
pp. 13-24
Author(s):  
Tomokazu Numano ◽  
Koji Hyodo ◽  
Naotaka Nitta ◽  
Junichi Hata ◽  
Nobuaki Iwasaki ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Apparent Diffusion Coefficient ◽  
Rat Brain ◽  
Apparent Diffusion ◽  
Spiral Mri ◽  
Apparent Diffusion Coefficient Mapping
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