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Ischemic stroke biomarkers in blood

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https://www.readbyqxmd.com/read/28814097/prominent-deep-medullary-veins-a-predictive-biomarker-for-stroke-risk-from-transient-ischemic-attack
#1
Yang Duan, Zhihua Xu, Hongyi Li, Xiaonan Cai, Cancan Chang, Benqiang Yang
Background Deep medullary veins (DMVs) are a biomarker of severity and prognosis in patients with acute cerebral infarction. However, their clinical significance remains unclear in patients with transient ischemic attack (TIA). Purpose To determine whether prominent deep medullary veins (PDMVs) are a predictive biomarker for stroke risk after TIA. Material and Methods Clinical and imaging data of 49 patients with TIA and 49 sex- and age-matched controls were studied. PDMVs were defined as DMVs with a score of 3 (TDMVs) or asymmetric DMVs (ADMVs), and the relationship between PDMVs and clinical features was analyzed...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28796845/improved-early-risk-stratification-of-patients-with-st-segment-elevation-myocardial-infarction-undergoing-primary-percutaneous-coronary-intervention-using-a-combination-of-serum-soluble-st2-and-nt-probnp
#2
Jongwook Yu, Pyung Chun Oh, Minsu Kim, Jeonggeun Moon, Yae Min Park, Kyounghoon Lee, Soon Yong Suh, Seung Hwan Han, Kyunghee Byun, Taehoon Ahn, Woong Chol Kang
BACKGROUND: Although soluble suppression of tumorigenicity 2 (sST2) in serum is known to be associated with ischemic heart disease and heart failure, data regarding its prognostic impact in ST-segment elevation myocardial infarction (STEMI) is limited. We evaluated the prognostic impacts of serum sST2 and other serum biomarkers in STEMI patients undergoing primary percutaneous coronary intervention (PCI). METHODS: Consecutive all 323 patients with STEMI that underwent primary PCI were enrolled...
2017: PloS One
https://www.readbyqxmd.com/read/28771209/point-of-care-testing-in-acute-stroke-management-an-unmet-need-ripe-for-technological-harvest
#3
REVIEW
Dorin Harpaz, Evgeni Eltzov, Raymond C S Seet, Robert S Marks, Alfred I Y Tok
Stroke, the second highest leading cause of death, is caused by an abrupt interruption of blood to the brain. Supply of blood needs to be promptly restored to salvage brain tissues from irreversible neuronal death. Existing assessment of stroke patients is based largely on detailed clinical evaluation that is complemented by neuroimaging methods. However, emerging data point to the potential use of blood-derived biomarkers in aiding clinical decision-making especially in the diagnosis of ischemic stroke, triaging patients for acute reperfusion therapies, and in informing stroke mechanisms and prognosis...
August 3, 2017: Biosensors
https://www.readbyqxmd.com/read/28758524/transit-time-homogenization-in-ischemic-stroke-a-novel-biomarker-of-penumbral-microvascular-failure
#4
Thorbjørn S Engedal, Niels Hjort, Kristina D Hougaard, Claus Z Simonsen, Grethe Andersen, Irene Klærke Mikkelsen, Jens K Boldsen, Simon F Eskildsen, Mikkel B Hansen, Hugo Angleys, Sune N Jespersen, Salvador Pedraza, Tae H Cho, Joaquín Serena, Susanne Siemonsen, Götz Thomalla, Norbert Nighoghossian, Jens Fiehler, Kim Mouridsen, Leif Østergaard
Cerebral ischemia causes widespread capillary no-flow in animal studies. The extent of microvascular impairment in human stroke, however, is unclear. We examined how acute intra-voxel transit time characteristics and subsequent recanalization affect tissue outcome on follow-up MRI in a historic cohort of 126 acute ischemic stroke patients. Based on perfusion-weighted MRI data, we characterized voxel-wise transit times in terms of their mean transit time (MTT), standard deviation (capillary transit time heterogeneity - CTH), and the CTH:MTT ratio (relative transit time heterogeneity), which is expected to remain constant during changes in perfusion pressure in a microvasculature consisting of passive, compliant vessels...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28729134/macrophage-migration-inhibitory-factor-levels-in-serum-from-patients-with-acute-intracerebral-hemorrhage-potential-contribution-to-prognosis
#5
Qun Lin, Jian-Yong Cai, Chuan Lu, Jun Sun, Hua-Jun Ba, Mao-Hua Chen, Xian-Dong Chen, Jun-Xia Dai, Jian-Hu Lin
BACKGROUND: Intracerebral hemorrhage (ICH) pathophysiology involves inflammation. Macrophage migration inhibition factor (MIF), a pro-inflammatory cytokine, is related to prognosis of ischemic stroke. The aim of this study was to investigate whether serum MIF levels are associated with severity and outcomes in patients with acute ICH. METHODS: We enrolled a total of 120 consecutive ICH patients and 120 healthy controls and sampled blood on admission and at study entry respectively...
July 17, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28724745/seq-identifies-circulating-mir-125a-5p-mir-125b-5p-and-mir-143-3p-as-potential-biomarkers-for-acute-ischemic-stroke
#6
Steffen Tiedt, Matthias Prestel, Rainer Malik, Nicola Schieferdecker, Marco Düring, Veronika Kautzky, Ivelina Stoycheva, Julia Böck, Bernd H Northoff, Matthias Klein, Franziska Dorn, Knut Krohn, Daniel Teupser, Arthur Liesz, Nikolaus Plesnila, Lesca M Holdt, Martin Dichgans
Rationale: Currently, there are no blood-based biomarkers with clinical utility for acute ischemic stroke (IS). microRNAs (miRNAs) show promise as disease markers due to their cell-type specific expression patterns and stability in peripheral blood. Objective: To identify circulating miRNAs associated with acute IS, determine their temporal course up to 90 days post-stroke, and explore their utility as an early diagnostic marker. Methods and Results: We used RNA sequencing to study expression changes of circulating miRNAs in a discovery sample of 20 IS patients and 20 matched healthy control subjects (HCs)...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28716979/blood-biomarkers-for-the-early-diagnosis-of-stroke-the-stroke-chip-study
#7
Alejandro Bustamante, Elena López-Cancio, Sara Pich, Anna Penalba, Dolors Giralt, Teresa García-Berrocoso, Carles Ferrer-Costa, Teresa Gasull, María Hernández-Pérez, Mónica Millan, Marta Rubiera, Pedro Cardona, Luis Cano, Helena Quesada, Mikel Terceño, Yolanda Silva, Mar Castellanos, Moisés Garces, Silvia Reverté, Xavier Ustrell, Rafael Marés, Joan Josep Baiges, Joaquín Serena, Francisco Rubio, Eduardo Salas, Antoni Dávalos, Joan Montaner
BACKGROUND AND PURPOSE: Stroke diagnosis could be challenging in the acute phase. We aimed to develop a blood-based diagnostic tool to differentiate between real strokes and stroke mimics and between ischemic and hemorrhagic strokes in the hyperacute phase. METHODS: The Stroke-Chip was a prospective, observational, multicenter study, conducted at 6 Stroke Centers in Catalonia. Consecutive patients with suspected stroke were enrolled within the first 6 hours after symptom onset, and blood samples were drawn immediately after admission...
July 17, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28638033/-the-biomarkers-of-cerebral-ischemia-as-a-new-method-for-the-validation-of-the-efficacy-of-cytoprotective-therapy
#8
S A Dambinova, K T Aliev, E V Bondarenko, G V Ponomarev, A A Skoromets, A P Skoromets, T A Skoromets, D G Smolko, M V Shumilina
AIM: To study blood plasma concentrations of NR2-peptide in patients with ischemic stroke (IS) to assess its diagnostic value as a biomarker of cerebral ischemia and determine the dynamics of the biomarker during treatment with cortexin. MATERIAL AND METHODS: One hundred and twenty patients, aged from 18 to 70 years, including 36 with transient ischemic attack (TIA) and 84 with IS in the carotid territory (n=70) and vertebral/basilar territory with the Wallenberg-Zakharchenko syndrome (n=14), were enrolled...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28629771/chemokines-play-complex-roles-in-cerebral-ischemia
#9
REVIEW
Chen Chen, Shi-Feng Chu, Dan-Dan Liu, Zhao Zhang, Ling-Lei Kong, Xin Zhou, Nai-Hong Chen
Ischemic stroke (IS) is a disease caused by deficiency of blood and oxygen in focal or complete brain, followed by inflammation cascade and other pathological reactions, which finally lead to irreversible damage to the cerebrum. For the inflammation is a key progress at the initiation of ischemia and poststroke, and chemokines work as vital cytokines in inflammation, we focus the roles of chemokines in IS. Studies have shown cerebral ischemia is associated with marked induction of both CXC and CC chemokines which resulting in extensive leukocyte infiltration in the ischemic brain, and neutrophil infiltration may increase cerebral edema inducing injury in the ischemic area...
June 16, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28608165/platelet-related-biomarkers-and-their-response-to-inhibition-with-aspirin-and-p2y12-receptor-antagonists-in-patients-with-acute-coronary-syndrome
#10
Angela Lowenstern, Robert F Storey, Megan Neely, Jie-Lena Sun, Dominick J Angiolillo, Christopher P Cannon, Anders Himmelmann, Kurt Huber, Stefan K James, Hugo A Katus, Joao Morais, Agneta Siegbahn, Phillippe Gabriel Steg, Lars Wallentin, Richard C Becker
The PLATelet inhibition and patient Outcomes (PLATO) trial showed that treatment with ticagrelor reduced the rate of death due to vascular causes, myocardial infarction and stroke when compared to clopidogrel in patients with ST-elevation or non-ST-elevation acute coronary syndrome (ACS). While the comparative benefit of ticagrelor over clopidogrel increased over time, event rates accrued in both groups during the study period. The purpose of our biomarker-based exploratory analysis was to determine whether long-term platelet inhibition may be associated with platelet adaptation...
August 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28598212/blood-protein-biomarkers-as-diagnostic-tool-for-ischemic-stroke-a-systematic-review
#11
Thomas Monbailliu, Joline Goossens, Saϊd Hachimi-Idrissi
AIM: This systematic review provides a summary of the blood protein biomarkers that have been studied for the diagnosis of acute ischemic stroke. MATERIALS & METHODS: An extensive MEDLINE (using PubMed) and Web of Knowledge search was performed. From the 354 articles found, 42 were eligible for further analysis and 25 protein biomarkers were examined. RESULTS: Though many candidate blood-based protein biomarkers were examined, only two could significantly differentiate ischemic stroke patients from healthy controls, stroke mimics and hemorrhagic stroke patients...
June 9, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28595796/the-metal-and-metalloprotein-profile-of-human-plasma-as-biomarkers-for-stroke-diagnosis
#12
Keaton S Nahan, Kyle B Walsh, Opeolu Adeoye, Julio A Landero-Figueroa
Stroke, a major cause of disability and mortality, affects someone in the United States every 40s. Stroke biomarkers, including those that could be used as a blood test for diagnosis of stroke, have been particularly elusive. We performed a double blind study to identify human plasma biomarkers for the diagnosis of stroke, including acute ischemic stroke (AIS) and intracerebral hemorrhage (ICH). We utilized a three-track approach based on the total metal profile, the metal cofactor levels among metalloproteins, and the identification of stroke-related metalloproteins...
July 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28531882/%C3%AE-thromboglobulin-and-incident-cardiovascular-disease-risk-the-atherosclerosis-risk-in-communities-study
#13
Yasuhiko Kubota, Alvaro Alonso, Aaron R Folsom
INTRODUCTION: Although it has been suggested that increased concentrations of activated platelet biomarkers are associated with increased risk of incident cardiovascular disease (CVD) in the general population, evidence for this association is still controversial. Thus, we tested the hypothesis that activated platelets, measured by higher concentrations of β-thromboglobulin, are associated with increased risk of incident CVD (coronary heart disease, heart failure ischemic stroke, and atrial fibrillation)...
May 17, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28530142/a-targeted-self-management-approach-for-reducing-stroke-risk-factors-in-african-american-men-who-have-had-a-stroke-or-transient-ischemic-attack
#14
Martha Sajatovic, Curtis Tatsuoka, Elisabeth Welter, Kari Colon-Zimmermann, Carol Blixen, Adam T Perzynski, Shelly Amato, Jamie Cage, Johnny Sams, Shirley M Moore, Svetlana Pundik, Sophia Sundararajan, Charles Modlin, Cathy Sila
PURPOSE: This study compared a novel self-management (TargetEd MAnageMent Intervention [TEAM]) versus treatment as usual (TAU) to reduce stroke risk in African American (AA) men. DESIGN: Six-month prospective randomized controlled trial with outcomes evaluated at baseline, 3 months, and 6 months. SETTING: Academic health center. PARTICIPANTS: Thirty-eight (age < 65) AA men who had a stroke or transient ischemic attack and a Barthel index score of >60 were randomly assigned to TEAM (n = 19) or TAU (n = 19)...
January 1, 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/28528975/autophagy-related-gene-microarray-and-bioinformatics-analysis-for-ischemic-stroke-detection
#15
Yinsheng Guo, Yue Ma, Yanwei Zhang, Li Zhou, Suli Huang, Ying Wen, Fei Zou, Jinquan Cheng
Ischemic stroke (IS) is characterized by high morbidity and poor prognosis. However, the mechanisms of IS induced injury are still poorly understood. The main aim of this study is to explore the role of autophagy in IS. Ten pairs of whole blood samples of IS patients and matched controls were included to select differential expressed genes (DE genes) by autophagy-related functional gene microarray analysis. And then, one hundred and fifty pairs of whole blood samples of IS patients and matched controls were included to validate the DE genes...
July 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28477280/biomarkers-of-acute-stroke-etiology-base-study-methodology
#16
Edward C Jauch, Andrew D Barreto, Joseph P Broderick, Doug M Char, Brett L Cucchiara, Thomas G Devlin, Alison J Haddock, William J Hicks, Brian C Hiestand, Glen C Jickling, Jeff June, David S Liebeskind, Ted J Lowenkopf, Joseph B Miller, John O'Neill, Tim L Schoonover, Frank R Sharp, W Frank Peacock
Acute ischemic stroke affects over 800,000 US adults annually, with hundreds of thousands more experiencing a transient ischemic attack. Emergent evaluation, prompt acute treatment, and identification of stroke or TIA (transient ischemic attack) etiology for specific secondary prevention are critical for decreasing further morbidity and mortality of cerebrovascular disease. The Biomarkers of Acute Stroke Etiology (BASE) study is a multicenter observational study to identify serum markers defining the etiology of acute ischemic stroke...
May 5, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28452132/blood-based-protein-biomarkers-for-stroke-differentiation-a-systematic-review
#17
REVIEW
Shubham Misra, Amit Kumar, Pradeep Kumar, Arun K Yadav, Dheeraj Mohania, Awadh K Pandit, Kameshwar Prasad, Deepti Vibha
BACKGROUND: Computed Tomography (CT) scan is the mainstay for diagnosis of stroke; but the facility of CT scan is not easily available. A blood based biomarker approach is required to distinguish ischemic stroke (IS) from hemorrhagic stroke (HS) in pre-hospital settings. OBJECTIVE: To conduct a systematic review of diagnostic utility of blood biomarkers for differential diagnosis of stroke. METHODS: A comprehensive literature search was carried out till March 07, 2017 in PubMed, Cochrane, Medline, OVID, and Google Scholar databases...
April 28, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28446746/peripheral-blood-akap7-expression-as-an-early-marker-for-lymphocyte-mediated-post-stroke-blood-brain-barrier-disruption
#18
Grant C O'Connell, Madison B Treadway, Ashley B Petrone, Connie S Tennant, Noelle Lucke-Wold, Paul D Chantler, Taura L Barr
Our group recently identified 16 genes whose peripheral blood expression levels are differentially regulated in acute ischemic stroke. The purpose of this study was to determine whether the early expression levels of any of these 16 genes are predictive for post-stroke blood brain barrier (BBB) disruption. Transcriptional expression levels of candidate genes were measured in peripheral blood sampled from ischemic stroke patients at emergency department admission, and BBB permeability was assessed at 24 hour follow up via perfusion-weighted imaging...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28366792/serum-macrophage-migration-inhibitory-factor-concentrations-correlate-with-prognosis-of-traumatic-brain-injury
#19
Ding-Bo Yang, Wen-Hua Yu, Xiao-Qiao Dong, Zu-Yong Zhang, Quan Du, Qiang Zhu, Zhi-Hao Che, Hao Wang, Yong-Feng Shen, Li Jiang
BACKGROUND: Macrophage migration inhibitory factor (MIF) is a well-known pro-inflammatory cytokine. Serum MIF concentrations are associated with the severity and prognosis of ischemic stroke. METHODS: In this prospective, observational study, white blood cell (WBC) count and serum concentrations of C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α) and MIF among 108 severe traumatic brain injury (TBI) patients and 108 controls were measured...
March 30, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28359134/circulating-extracellular-dna-cause-or-consequence-of-thrombosis
#20
Miguel Jiménez-Alcázar, Natalie Kim, Tobias A Fuchs
Thrombosis leads to ischemic organ damage in cardiovascular and thromboembolic diseases. Neutrophils promote thrombosis in vitro and in vivo by releasing neutrophil extracellular traps (NETs). NETs are composed of DNA filaments coated with histones and neutrophil enzymes such as myeloperoxidase (MPO). Circulating extracellular DNA (ceDNA) is widely used as a surrogate marker to monitor NET formation in thrombosis. This narrative review summarizes the association of ceDNA with human thrombosis. Levels of ceDNA indicate the extent and outcome of several cardiovascular and thromboembolic diseases, including myocardial infarction, stroke, and venous thromboembolism...
March 30, 2017: Seminars in Thrombosis and Hemostasis
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