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Stroke inflammation

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https://www.readbyqxmd.com/read/27919794/diagnostic-utility-of-contrast-enhanced-3d-t1-weighted-imaging-in-acute-cerebral-infarction-associated-with-graves-disease
#1
Yasufumi Gon, Manabu Sakaguchi, Naoki Oyama, Hideki Mochizuki
Graves disease is rarely complicated with cerebrovascular steno-occlusive diseases. Previous studies have suggested several hypotheses for this occurrence, including excess thyroid hormone, which stimulates the sympathetic nervous system, which in turn causes an abnormal hemodynamic response with consequent atherosclerotic changes, and antithyroid antibodies cause local vascular inflammation in patients with Graves disease. However, radiological findings of vasculitis in patients with Graves disease and cerebral infarction remain less known...
December 2, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27914011/activation-of-alpha-7-nicotinic-acetylcholine-receptor-reduces-brain-edema-in-mice-with-ischemic-stroke-and-bone-fracture
#2
Dingquan Zou, Man Luo, Zhenying Han, Lei Zhan, Wan Zhu, Shuai Kang, Chen Bao, Zhao Li, Jeffrey Nelson, Rui Zhang, Hua Su
Stroke is an important risk factor for bone fracture. We showed previously that bone fracture at the acute stage of ischemic stroke worsens, and activation of α-7 nicotinic acetylcholine receptor (α-7 nAchR) improves, stroke recovery by attenuating inflammation. We hypothesized that activation of α-7 nAchR also improves the blood-brain barrier (BBB) integrity. Permanent distal middle cerebral artery occlusion (pMCAO) was performed on C57BL/6J mice followed by tibia fracture 1 day later. Mice were treated with 0...
December 2, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27909476/atrial-fibrillation-and-risk-of-dementia-cognitive-decline
#3
REVIEW
Anand D Shah Md, Faisal M Merchant Md, David B Delurgio Md
Emerging evidence suggests a link between atrial fibrillation and subsequent development of dementia. While a majority of risk can be attributed to cardioembolic stroke secondary to atrial fibrillation, additional risk is apparent, and may be driven by vascular inflammation and changes in cerebral perfusion. Medical therapies including anticoagulation, statin therapy, and angiotensin-renin-aldosterone axis antagonists may reduce dementia risk. Procedural therapies such as atrial fibrillation catheter ablation and left atrial appendage closure may also prove to be important mediators of acute and long-term risk...
February 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909385/biomarkers-of-inflammation-in-pediatric-arterial-ischemic-stroke
#4
COMMENT
Mary Dunbar, Aleksandra Mineyko
Investigators from Switzerland studied inflammatory markers in children and neonates with acute arterial ischemic stroke (AIS).
November 2016: Pediatric neurology briefs
https://www.readbyqxmd.com/read/27907969/neuroprotection-in-critical-care-neurology
#5
Menno R Germans, Hieronymus D Boogaarts, R Loch Macdonald
Ischemic stroke, intracerebral hemorrhage, subarachnoid hemorrhage, and traumatic brain injury-all have in common early brain injury due to brain tissue destruction, reduced cerebral blood flow and oxygen delivery, and overall substantial morbidity and mortality. The pathophysiology of brain tissue damage likely includes common cellular mechanisms. Neuroprotection has seldom, if ever, been shown to reduce early brain injury. Secondary brain injury develops after these conditions due to macroscopic events such as increased intracranial pressure and reduced cerebral blood flow, as well as cellular processes including vascular damage, inflammation, and apoptotic/necrotic cell death...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27907953/management-of-the-pediatric-neurocritical-care-patient
#6
Christopher M Horvat, Haifa Mtaweh, Michael J Bell
Pediatric neurocritical care is a growing subspecialty of pediatric intensive care that focuses on the management of acute neurological diseases in children. A brief history of the field of pediatric neurocritical care is provided. Neuromonitoring strategies for children are reviewed. Management of major categories of acute childhood central neurologic diseases are reviewed, including treatment of diseases associated with intracranial hypertension, seizures and status epilepticus, stroke, central nervous system infection and inflammation, and hypoxic-ischemic injury...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27906746/recent-developments-on-the-vascular-effects-of-20-hydroxyeicosatetraenoic-acid
#7
Victor Garcia, Michal L Schwartzman
PURPOSE OF REVIEW: 20-Hydroxyeicosatetraenoic acid (20-HETE) is a potent vasoactive eicosanoid and a key constituent of the microcirculation. Its effects on vascular function are multifaceted and include stimulation of smooth muscle, contractility, migration, and proliferation, as well as endothelial cell dysfunction and inflammation. Such effects have significant implications with regard to the control of vascular homeostasis and pathophysiology. The clinical relevance of 20-HETE is highlighted by recent studies linking 20-HETE and its biosynthetic enzymes to the development of hypertension, stroke, and myocardial infarction...
November 30, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27902774/intravenous-treatment-with-a-long-chain-omega-3-lipid-emulsion-provides-neuroprotection-in-a-murine-model-of-ischemic-stroke-a-pilot-study
#8
Dirk Berressem, Konrad Koch, Nicole Franke, Jochen Klein, Gunter P Eckert
Single long-chain omega-3 fatty acids (e.g. docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA)) are known for their neuroprotective properties associated with ischemic stroke. This pilot study aimed to test the effectiveness of an acute treatment with a long-chain omega-3 lipid emulsion (Omegaven 10%®, OGV) that contains fish oil (DHA 18 mg/ml; EPA 21 mg/ml) and α-tocopherol (0.2 mg/ml) in a transient middle cerebral artery occlusion (MCAO) model of ischemic stroke in mice. For this purpose, female CD-1 mice were anesthetized and subjected to 90 minutes of MCAO...
2016: PloS One
https://www.readbyqxmd.com/read/27898167/nsaids-prescription-prevalence-after-a-cardiovascular-event-related-hospitalization-in-medicaid-beneficiaries-from-puerto-rico
#9
Suzette M Vélez, José J Hernández, Sasha M Davis, María G Almodóvar, José R Mercado
OBJECTIVE: Non-steroidal anti-inflammatory drugs (NSAIDs) are commonly prescribed for pain and inflammation. NSAIDs are associated with serious adverse effects and cardiovascular (CV) risks that include myocardial infarction, stroke and heart failure. In the period of time immediately after a CV event, modification to the drug therapy regimen and lifestyle habits should be instituted to decrease morbidity and mortality. The objective of this study is to measure the prevalence of NSAIDs prescribing in the immediate 90 days after a CV-related hospitalization in Medicaid beneficiaries in Puerto Rico...
December 2016: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/27898024/perinatal-arterial-ischemic-stroke-is-associated-to-materno-fetal-immune-activation-and-intracranial-arteritis
#10
Clémence Guiraut, Nicole Cauchon, Martin Lepage, Guillaume Sébire
The medium-size intra-cranial arteries arising from the carotid bifurcation are prone to perinatal arterial ischemic strokes (PAIS). PAIS' physiopathology needs to be better understood to develop preventive and therapeutic interventions that are currently missing. We hypothesized that materno-fetal inflammation leads to a vasculitis affecting selectively the carotidian tree and promoting a focal thrombosis and subsequent stroke. Dams were injected with saline or lipopolysaccharide (LPS) from Escherichia coli...
November 25, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27898011/update-on-inflammatory-biomarkers-and-treatments-in-ischemic-stroke
#11
REVIEW
Aldo Bonaventura, Luca Liberale, Alessandra Vecchié, Matteo Casula, Federico Carbone, Franco Dallegri, Fabrizio Montecucco
After an acute ischemic stroke (AIS), inflammatory processes are able to concomitantly induce both beneficial and detrimental effects. In this narrative review, we updated evidence on the inflammatory pathways and mediators that are investigated as promising therapeutic targets. We searched for papers on PubMed and MEDLINE up to August 2016. The terms searched alone or in combination were: ischemic stroke, inflammation, oxidative stress, ischemia reperfusion, innate immunity, adaptive immunity, autoimmunity...
November 25, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27897273/a-novel-therapeutic-peptide-as-a-partial-agonist-of-rankl-in-ischemic-stroke
#12
Hitomi Kurinami, Munehisa Shimamura, Hironori Nakagami, Hideo Shimizu, Hiroshi Koriyama, Tomohiro Kawano, Kouji Wakayama, Hideki Mochizuki, Hiromi Rakugi, Ryuichi Morishita
The enhanced receptor activator of nuclear factor-κB (NFκB) ligand (RANKL) and its receptor (RANK) signal have been reported to attenuate ischemic brain injury through inhibition of Toll-like receptor (TLR) 4-mediated inflammation. However, augmentation of the RANKL/RANK signal also accelerates osteoporosis, which is a potential problem in clinical use of RANKL. Therefore, we developed novel peptides, microglial healing peptides (MHPs), which were based on the DE and/or EF loop of RANKL. Among them, MHP1 was the most effective inhibitor of TLR4-induced inflammations in microglia/macrophages...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27896893/an-acute-disseminated-encephalomyelitis-like-illness-in-the-elderly-neuroimaging-and-neuropathology-findings
#13
Ulrike W Kaunzner, Elliott Salamon, Elena Pentsova, Marc Rosenblum, Sasan Karimi, Nancy Nealon, Ehud Lavi, Dara G Jamieson
INTRODUCTION: Acute disseminated encephalomyelitis (ADEM) is a rare demyelinating disease of the central nervous system (CNS) that classically occurs in children and adolescents. It characteristically presents with acute inflammation, resulting in demyelination, often following an infectious disease. ADEM has been described in adult patients, but the incidence in the adult and especially elderly population is low. CASES: We describe five older adults (age 57 to 85) who presented with acute neurological symptoms...
November 29, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27889956/red-blood-cell-function-and-dysfunction-redox-regulation-nitric-oxide-metabolism-anemia
#14
Viktoria Kuhn, Lukas Diederich, T C Stevenson Keller Iv, Christian M Kramer, Wiebke Lückstädt, Christina Panknin, Tatsiana Suvorava, Brant Isakson, Malte Kelm, Miriam Margherita Cortese-Krott
SIGNIFICANCE: Recent clinical evidence identified anemia to be correlated with severe complications of cardiovascular disease such as bleeding, thromboembolic events, stroke, hypertension, arrhythmias, as well as inflammation, particularly in elderly patients. The underlying mechanisms of these complications are largely unidentified. Recent Advances: Previously, red blood cells (RBCs) were considered exclusively as transporters of oxygen and nutrients to the tissues. More recent experimental evidence indicates that RBCs are important inter-organ communication systems with additional functions, including participation in control of systemic NO metabolism, redox regulation, blood rheology and viscosity...
November 27, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27884770/neutrophil-granulocytes-in-cerebral-ischemia-evolution-from-killers-to-key-players
#15
REVIEW
Jan-Kolja Strecker, Antje Schmidt, Wolf-Rüdiger Schäbitz, Jens Minnerup
Neutrophil granulocytes (or polymorphonuclear cells, PMNs) have long been considered as crude killing machines, particularly trained to attack bacterial or fungal pathogens in wounds or infected tissues. That perspective has fundamentally changed over the last decades, as PMNs have been shown to exert a livery exchange between other cells of the innate and adaptive immune system. PMNs do provide major immunomodulatory contribution during acute inflammation and subsequent clearance. Following sterile inflammation like cerebral ischemia, PMNs are among the first hematogenous cells attracted to the ischemic tissue...
November 21, 2016: Neurochemistry International
https://www.readbyqxmd.com/read/27875362/relationship-between-hiv-infection-antiretroviral-therapy-inflammatory-markers-and-cerebrovascular-endothelial-function-among-adults-in-urban-china
#16
Felicia C Chow, Yanling Li, Yinghuan Hu, Joy Chan, Huanling Wang, Weihai Xu, Richard W Price, Farzaneh A Sorond, Taisheng Li
BACKGROUND: Cerebrovascular risk is increased in people living with HIV infection compared with age-matched uninfected individuals. Cerebrovascular endothelial dysfunction related to antiretroviral therapy and inflammation may contribute to higher stroke risk in HIV infection. METHODS: We compared cerebral vasoreactivity-a measure of cerebrovascular endothelial function assessed by the breath holding index (BHI) using transcranial Doppler ultrasound-between virologically suppressed Chinese HIV-infected individuals followed in an HIV clinic in Beijing, China and uninfected controls...
November 21, 2016: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27867477/hyperbaric-oxygen-therapy-in-experimental-and-clinical-stroke
#17
REVIEW
Wei-Wei Zhai, Liang Sun, Zheng-Quan Yu, Gang Chen
Stroke, which is defined as a neurologic deficit caused by sudden impaired blood supply, has been considered as a common cause of death and disability for decades. The World Health Organization has declared that almost every 5 seconds a new stroke occurs, placing immense socioeconomic burdens. However, the effective and available treatment strategies are still limited. Additionally, the most effective therapy, such as thrombolysis and stenting for ischemic stroke, generally requires a narrow therapeutic time window after the event...
April 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27865182/early-initiation-of-eicosapentaenoic-acid-and-statin-treatment-is-associated-with-better-clinical-outcomes-than-statin-alone-in-patients-with-acute-coronary-syndromes-1-year-outcomes-of-a-randomized-controlled-study
#18
Kazumasa Nosaka, Toru Miyoshi, Mutsumi Iwamoto, Masahito Kajiya, Keisuke Okawa, Saori Tsukuda, Fumi Yokohama, Masahiro Sogo, Tomoyuki Nishibe, Naoaki Matsuo, Satoshi Hirohata, Hiroshi Ito, Masayuki Doi
BACKGROUND: Early initiation of EPA treatment in combination with a statin within 24h after percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (MI) reduces inflammation and ventricular arrhythmia compared with statin monotherapy; however, the impact of early initiation of EPA treatment on cardiovascular events is unclear. We determined whether early eicosapentaenoic acid (EPA) treatment in patients with acute coronary syndrome (ACS) reduces adverse cardiovascular events...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27862036/association-of%C3%AE-1-adrenergic%C3%A3-m2-muscarinic-receptor-autoantibody-with-occurrence-and-development-of-nonvalvular-atrial-fibrillation
#19
Bing Hu, Yanxiang Sun, Sha Li, Jie Sun, Tong Liu, Zidi Wu, L I Feng
BACKGROUND: Atrial fibrillation (AF) is the most common sustained arrhythmia and an independent increased risk of stroke and death. Although the exact mechanisms of AF are not completely elucidated, a large number of evidences demonstrate that autoimmunity may play an important role in the initiation, the progression and the maintenance of AF. In this study, we aimed to compare Anti-β1-Adrenergic Receptor Autoantibody (anti-β1 -R) and Anti- M2-Muscarinic Receptor Autoantibody(anti-M2 -R) levels between non-valvular AF patients and healthy control subjects...
November 10, 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27861531/macrophage-derived-angiopoietin-like-protein-2-exacerbates-brain-damage-by-accelerating-acute-inflammation-after-ischemia-reperfusion
#20
Toshihiro Amadatsu, Jun Morinaga, Takayuki Kawano, Kazutoyo Terada, Tsuyoshi Kadomatsu, Keishi Miyata, Motoyoshi Endo, Daiki Kasamo, Jun-Ichi Kuratsu, Yuichi Oike
Ischemic stroke is a leading cause of death and disability worldwide. Several reports suggest that acute inflammation after ischemia-reperfusion exacerbates brain damage; however, molecular mechanisms underlying this effect remain unclear. Here, we report that MAC-3-positive immune cells, including infiltrating bone marrow-derived macrophages and activated microglia, express abundant angiopoietin-like protein (ANGPTL) 2 in ischemic mouse brain in a transient middle cerebral artery occlusion (MCAO) model. Both neurological deficits and infarct volume decreased in transient MCAO model mice established in Angptl2 knockout (KO) relative to wild-type mice...
2016: PloS One
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