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Biomarker AND Stroke

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https://www.readbyqxmd.com/read/27914503/rationale-and-design-of-the-transcatheter-aortic-valve-replacement-to-unload-the-left-ventricle-in-patients-with-advanced-heart-failure-tavr-unload-trial
#1
Ernest Spitzer, Nicolas M Van Mieghem, Philippe Pibarot, Rebecca T Hahn, Susheel Kodali, Mathew S Maurer, Tamim M Nazif, Josep Rodés-Cabau, Jean-Michel Paradis, Arie-Pieter Kappetein, Ori Ben-Yehuda, Gerrit-Anne van Es, Faouzi Kallel, William N Anderson, Jan Tijssen, Martin B Leon
BACKGROUND: Coexistence of moderate aortic stenosis (AS) in patients with heart failure (HF) with reduced ejection fraction is not uncommon. Moderate AS increases afterload, whereas pharmacologic reduction of afterload is a pillar of contemporary HF management. HYPOTHESIS: Unloading the left ventricle by reducing the transaortic gradient with transfemoral transcatheter aortic valve replacement (TAVR) may improve clinical outcomes in patients with moderate AS and HF with reduced ejection fraction...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27909385/biomarkers-of-inflammation-in-pediatric-arterial-ischemic-stroke
#2
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/27908171/automated-detection-of-white-matter-hyperintensities-of-all-sizes-in-cerebral-small-vessel-disease
#3
Mohsen Ghafoorian, Nico Karssemeijer, Inge W M van Uden, Frank-Erik de Leeuw, Tom Heskes, Elena Marchiori, Bram Platel
PURPOSE: White matter hyperintensities (WMH) are seen on FLAIR-MRI in several neurological disorders, including multiple sclerosis, dementia, Parkinsonism, stroke and cerebral small vessel disease (SVD). WMHs are often used as biomarkers for prognosis or disease progression in these diseases, and additionally longitudinal quantification of WMHs is used to evaluate therapeutic strategies. Human readers show considerable disagreement and inconsistency on detection of small lesions. A multitude of automated detection algorithms for WMHs exists, but since most of the current automated approaches are tuned to optimize segmentation performance according to Jaccard or Dice scores, smaller WMHs often go undetected in these approaches...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27905388/-prognostic-biochemical-markers-of-thrombolytic-therapy-in-ischemic-stroke
#4
O A Kicherova, L I Reikhert, V G Skorikova, S A Semeshko
AIM: To assess prognostic value of endothelial dysfunction, endogenous intoxication and oxidative stress in the acute period of ischemic stroke (II) at the stage of making a decision on using thrombolytic therapy (TLT) as well during the follow-up in order to personalize treatment. MATERIAL AND METHODS: The study included 57 patients stratified into control group 1 (n=29) and TLT group (n=28). Contents of C-reactive protein (Nsrb), matrixmetalloproteinase-9 (MMP-9) erythrocyte lipid peroxidation products were measured in the blood of patients...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27904159/copeptin-as-a-biomarker-for-prediction-of-prognosis-of-acute-ischemic-stroke-and-transient-ischemic-attack-a-meta-analysis
#5
Qian Xu, Yunfan Tian, Hao Peng, Hongmei Li
This meta-analysis aimed to investigate the predictive effect of copeptin as a biomarker for the prognosis of acute ischemic stroke and transient ischemic attack. Electronic databases including PubMed, Medline, EMBASE, Web of Science and Cochrane Central were searched for studies assessing the association of copeptin level on admission with prognosis of acute ischemic stroke and transient ischemic attack. The Newcastle-Ottawa Quality assessment scale for cohort study was used to evaluate quality. A total of 1976 acute ischemic stroke patients from 6 studies were included, and 59% of patients were male...
December 1, 2016: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/27899750/circulating-micrornas-as-novel-biomarkers-of-stenosis-progression-in-asymptomatic-carotid-stenosis
#6
Sandra Dolz, David Górriz, José Ignacio Tembl, Dolors Sánchez, Gerardo Fortea, Vera Parkhutik, Aida Lago
BACKGROUND AND PURPOSE: Progression of asymptomatic carotid artery stenosis (ACAS) in patients with >50% luminal narrowing is considered a potential risk factor for ischemic stroke; however, subclinical molecular biomarkers of ACAS progression are lacking. Recent studies suggest a regulatory function for several microRNAs (miRNAs) on the evolution of carotid plaque, but its role in ACAS progression is mostly unknown. The aim of our study was to investigate a wide miRNA panel in peripheral blood exosomes from patients with ACAS to associate circulating miRNA expression profiles with stenosis progression...
November 29, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27898011/update-on-inflammatory-biomarkers-and-treatments-in-ischemic-stroke
#7
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/27896982/predictive-modeling-of-hospital-readmission-rates-using-electronic-medical-record-wide-machine-learning-a-case-study-using-mount-sinai-heart-failure-cohort
#8
Khader Shameer, Kipp W Johnson, Alexandre Yahi, Riccardo Miotto, L I Li, Doran Ricks, Jebakumar Jebakaran, Patricia Kovatch, Partho P Sengupta, Sengupta Gelijns, Alan Moskovitz, Bruce Darrow, David L David, Andrew Kasarskis, Nicholas P Tatonetti, Sean Pinney, Joel T Dudley
Reduction of preventable hospital readmissions that result from chronic or acute conditions like stroke, heart failure, myocardial infarction and pneumonia remains a significant challenge for improving the outcomes and decreasing the cost of healthcare delivery in the United States. Patient readmission rates are relatively high for conditions like heart failure (HF) despite the implementation of high-quality healthcare delivery operation guidelines created by regulatory authorities. Multiple predictive models are currently available to evaluate potential 30-day readmission rates of patients...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27895004/predictors-of-vascular-cognitive-impairment-poststroke-in-a-middle-eastern-bahrain-cohort-a-proposed-case-control-comparison
#9
Claire Donnellan, Mona Al Banna, Noor Redha, Adel Al Jishi, Isa Al Sharoqi, Safa Taha, Moiz Bakhiet, Fatema Abdulla, Patrick Walsh
BACKGROUND: Poststroke dementia and cognitive impairment are associated with poor long-term outcomes after stroke. The contribution of genetic factors such as the presence of apolipoprotein (ApoE) ɛ4 allele and its association with cognitive impairment poststroke remains inconclusive, particularly in Middle Eastern regions. OBJECTIVE: The aim of this study is to examine all correlates and potential predictors of cognitive impairment including self-awareness and regulation deficits in stroke patients and compare these functions with healthy older adults from a Middle Eastern population...
November 28, 2016: JMIR Research Protocols
https://www.readbyqxmd.com/read/27889229/brown-propolis-attenuates-cerebral-ischemia-induced-oxidative-damage-via-affecting-antioxidant-enzyme-system-in-mice
#10
Gholamreza Bazmandegan, Mohammad Taher Boroushaki, Ali Shamsizadeh, Fatemeh Ayoobi, Elham Hakimizadeh, Mohammad Allahtavakoli
Oxidative stress plays a critical role in ischemic brain injury. Superoxide dismutase (SOD) and glutathione peroxidase (GPx) are the enzymes underlying the endogenous antioxidant mechanisms affected by stroke and are considered as oxidative stress biomarkers. Brown propolis (BP) is a bioactive natural product with a set of biological activities that in turn may differ depending on the area from which the substance is originated. The aim of this study was to investigate the effect of water-extracted brown propolis (WEBPs), from two regions of Iran, against cerebral ischemia-induced oxidative injury in a mouse model of stroke...
November 23, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27888142/profiling-and-identification-of-new-proteins-involved-in-brain-ischemia-using-maldi-imaging-mass-spectrometry
#11
Víctor Llombart, Sebastián Alejandro Trejo, Sílvia Bronsoms, Anna Morancho, Ma Feifei, Júlia Faura, Teresa García-Berrocoso, Alba Simats, Anna Rosell, Francesc Canals, Mar Hernández-Guillamón, Joan Montaner
: The identification of proteins involved in brain ischemia might allow the discovery of putative biomarkers or therapeutic targets for ischemic stroke. Our aim is to study the distribution of proteins within mouse brain after an ischemic insult using MALDI imaging-mass-spectrometry and to identify relevant proteins involved in brain damage. We occluded the middle cerebral artery of C57BL/6J mice. Brain slices were analyzed by MALDI-TOF and infarct (IC) and contralateral (CL) regions were compared using ClinProTools...
November 22, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27887791/cryptogenic-stroke-and-nonstenosing-intracranial-calcified-atherosclerosis
#12
Hooman Kamel, Gino Gialdini, Hediyeh Baradaran, Ashley E Giambrone, Babak B Navi, Michael P Lerario, James K Min, Costantino Iadecola, Ajay Gupta
OBJECTIVE: Because some cryptogenic strokes may result from large-artery atherosclerosis that goes unrecognized as it causes <50% luminal stenosis, we compared the prevalence of nonstenosing intracranial atherosclerotic plaques ipsilateral to cryptogenic cerebral infarcts versus the unaffected side using imaging biomarkers of calcium burden. METHODS: In a prospective stroke registry, we identified patients with cerebral infarction limited to the territory of one internal carotid artery (ICA)...
November 23, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27884769/upregulation-of-cd74-and-its-potential-association-with-disease-severity-in-subjects-with-ischemic-stroke
#13
Liu Yang, Ying Kong, Honglei Ren, Minshu Li, Chang-Juan Wei, Elaine Shi, Wei-Na Jin, Junwei Hao, Arthur A Vandenbark, Halina Offner
Macrophage migration inhibitory factor (MIF) is a key cytokine/chemokine in the activation and recruitment of inflammatory T lymphocytes known to exacerbate experimental stroke severity. MIF effects are mediated through its primary cellular receptor, CD74, the MHC class II invariant chain present on all class II expressing cells, including monocytes, macrophages and dendritic cells (DC). We demonstrated previously that partial MHC class II/peptide constructs (pMHC) can effectively treat mice with experimental stroke, in part through their ability to competitively inhibit MIF/CD74 interactions and downstream signaling...
November 21, 2016: Neurochemistry International
https://www.readbyqxmd.com/read/27881450/glial-fibrillary-acidic-protein-serum-levels-distinguish-between-intracerebral-hemorrhage-and-cerebral-ischemia-in-the-early-phase-of-stroke
#14
Sebastian Luger, Jens Witsch, Andreas Dietz, Gerhard F Hamann, Jens Minnerup, Hauke Schneider, Matthias Sitzer, Katja E Wartenberg, Marion Niessner, Christian Foerch
BACKGROUND: Recent studies have suggested that glial fibrillary acidic protein (GFAP) serum concentrations distinguish between intracerebral hemorrhage (ICH) and ischemic stroke (IS) shortly after symptom onset. In this prospective multicenter trial we validated GFAP in an independent patient cohort and assessed the quantitative relationship between GFAP release, bleeding size, and localization. METHODS: We included patients with a persistent neurological deficit (NIH Stroke Scale ≥4) suggestive of stroke within 6 h of symptom onset...
November 23, 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27878926/the-effects-of-dwi-infarct-lesion-volume-on-dwi-flair-mismatch-is-there-a-need-for-size-stratification
#15
Seyedmehdi Payabvash, Shayandokht Taleb, John C Benson, Jeffrey B Rykken, Mark C Oswood, Alexander M McKinney, Benjamin Hoffman
BACKGROUND: The lack of fluid-attenuated inversion-recovery (FLAIR) hyperintensity in areas of diffusion-weighted imaging (DWI) high signal, or DWI-FLAIR mismatch, is a potential imaging biomarker for timing of stroke onset. We aimed to determine the effects of DWI infarct lesion volume on DWI-FLAIR mismatch and its accuracy for identification of strokes within intravenous (IV) the thrombolytic therapy window. METHODS: Acute ischemic stroke patients with magnetic resonance imaging scan within 12 hours of witnessed stroke were included...
November 23, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27876311/circulating-biomarkers-in-cerebral-autosomal-dominant-arteriopathy-with-subcortical-infarcts-and-leukoencephalopathy-patients
#16
Francesca Pescini, Ida Donnini, Francesca Cesari, Serena Nannucci, Raffaella Valenti, Valentina Rinnoci, Anna Poggesi, Anna Maria Gori, Betti Giusti, Angela Rogolino, Alessandra Carluccio, Silvia Bianchi, Maria Teresa Dotti, Antonio Federico, Maurizio Balestrino, Enrico Adriano, Rosanna Abbate, Domenico Inzitari, Leonardo Pantoni
BACKGROUND: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is an inherited cerebral microangiopathy presenting with variable features, including migraine, psychiatric disorders, stroke, and cognitive decline and variable disability. On neuroimaging, CADASIL is characterized by leukoencephalopathy, multiple lacunar infarcts, and microbleeds. Previous studies suggest a possible role of endothelial impairment in the pathogenesis of the disease...
November 18, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27872696/incidence-and-clinical-outcome-of-patients-with-hypertensive-acute-ischemic-stroke-an-update-from-tertiary-care-center-of-central-india
#17
Amit R Nayak, Seema D Shekhawat, Neha H Lande, Anuja P Kawle, Dinesh P Kabra, Nitin H Chandak, Shweta R Badar, Dhananjay V Raje, Hatim F Daginawala, Lokendra R Singh, Rajpal S Kashyap
INTRODUCTION: We evaluated the incidence and clinical outcome of patients with hypertensive acute ischemic stroke (AIS) admitted to a tertiary care center in Central India. In addition, we examined the status of stroke biomarkers namely neuron-specific enolase (NSE), glial specific protein (S-100ββ), and inter-α-trypsin inhibitor heavy chain 4(ITIH4) in the serum of patients suffering from AIS with hypertension (HTN) and without HTN. METHODS: A total of 104 patients with AIS were enrolled for the study...
October 2016: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/27869298/informant-questionnaire-on-cognitive-decline-in-the-elderly-iqcode-for-the-early-diagnosis-of-dementia-across-a-variety-of-healthcare-settings
#18
REVIEW
Jennifer K Harrison, David J Stott, Rupert McShane, Anna H Noel-Storr, Rhiannon S Swann-Price, Terry J Quinn
BACKGROUND: The Informant Questionnaire for Cognitive Decline in the Elderly (IQCODE) is a structured interview based on informant responses that is used to assess for possible dementia. IQCODE has been used for retrospective or contemporaneous assessment of cognitive decline. There is considerable interest in tests that may identify those at future risk of developing dementia. Assessing a population free of dementia for the prospective development of dementia is an approach often used in studies of dementia biomarkers...
November 21, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27869039/the-role-of-rs1984112_g-at-cd36-gene-in-increasing-reticulocyte-level-among-sickle-cell-disease-patients
#19
Miniar Kalai, Marwa Dridi, Leila Chaouch, Imen Moumni, Houyem Ouragini, Imen Darragi, Imen Boudrigua, Dorra Chaouachi, Fethi Mellouli, Mohamed Bejaoui, Salem Abbes
AIMS AND BACKGROUND: Mediators of adhesion become a potential new target for pharmacological therapy to struggle the complications of sickle cell disease (SCD). Several mechanisms for increased adherence have been postulated and the well-studied are CD36 and VLA4 which encoded by ITGA4. Herein, we sought to determine whether one polymorphism of CD36 namely: rs1984112 and three exons of ITGA4 (4, 5, and 6) are implicated in hemolytic status and clinical events among SCD Tunisian patients...
November 20, 2016: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/27864544/investigative-nonclinical-cardiovascular-safety-and-toxicology-studies-with-bms-986094-an-ns5b-rna-dependent-rna-polymerase-inhibitor
#20
M Gill, K Horn, J Hennan, R White, D Bounous, S Clark, J R Megill, E Janovitz, M Davies, T Sanderson, M Graziano
BMS-986094, a 2'-C-methylguanosine prodrug that was in development for treatment of chronic hepatitis C infection was withdrawn from Phase 2 clinical trials because of unexpected cardiac and renal adverse events. Investigative nonclinical studies were conducted to extend the understanding of these findings using more comprehensive endpoints. BMS-986094 was given orally to female CD-1 mice (25 and 150 mg/kg/d) for 2 weeks (53/group) and to cynomolgus monkeys (15 and 30 mg/kg/d) for up to 6 weeks (2-3/sex/group for cardiovascular safety, and 5/sex/group for toxicology)...
November 17, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
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