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Biomarker AND Stroke

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https://www.readbyqxmd.com/read/28547878/mesiotemporal-atrophy-and-hippocampal-diffusivity-distinguish-amnestic-from-non-amnestic-vascular-cognitive-impairment
#1
A A Hosseini, D Meng, R J Simpson, D P Auer
BACKGROUND AND PURPOSE: The role of clinical factors, cerebral infarcts and hippocampal damage in vascular cognitive impairment (VCI) subtypes remains unclear. METHODS: Non-demented patients with carotid stenosis and recent transient ischemic attack/stroke had cognitive assessment and brain magnetic resonance imaging (MRI). Amnestic VCI was defined as memory impairment; non-amnestic VCI was any other subdomain impairment. Associations of MRI metrics [log-transformed total ischemic lesion load (log TILL), mesiotemporal atrophy (MTA) score, hippocampal mean diffusivity (hipMD)] with cognitive performance were assessed...
May 26, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28546328/microrna-15a-16-1-antagomir-ameliorates-ischemic-brain-injury-in-experimental-stroke
#2
Xinxin Yang, Xuelian Tang, Ping Sun, Yejie Shi, Kai Liu, Sulaiman H Hassan, R Anne Stetler, Jun Chen, Ke-Jie Yin
BACKGROUND AND PURPOSE: Dysregulation of the miR-15a/16-1 cluster in plasma has been reported in patients with stroke as a potential biomarker for diagnostic and prognostic use. However, the essential role and therapeutic potential of the miR-15a/16-1 cluster in ischemic stroke are poorly understood. This study is aimed at investigating the regulatory role of the miR-15a/16-1 cluster in ischemic brain injury and insight mechanisms. METHODS: Adult male miR-15a/16-1 knockout and wild-type mice, or adult male C57 BL/6J mice injected via tail vein with the miR-15a/16-1-specific inhibitor (antagomir, 30 pmol/g), were subjected to 1 hour of middle cerebral artery occlusion and 72 hours of reperfusion...
May 25, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28544117/increased-expression-of-stim1-orai1-in-platelets-of-stroke-patients-predictive-of-poor-outcomes
#3
M Dong, N Zheng, L J Ren, H Zhou, J Liu
BACKGROUND AND PURPOSE: The platelet activation that is mediated by store-operated Ca(2+) entry via stromal interaction molecule (STIM1) and Orai1 Ca(2+) influx channels has been shown to play a key role in ischaemic stroke (IS). This study aimed to evaluate the impact of platelet STIM1/Orai1 protein expression on outcomes of IS. METHODS: A total of 160 patients with acute non-cardioembolic IS, among whom 45 patients had small-vessel diseases and 115 patients had large-vessel diseases, were evaluated...
May 23, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28539119/towards-the-concept-of-disease-modifier-in-post-stroke-or-vascular-cognitive-impairment-a-consensus-report
#4
Régis Bordet, Ralf Ihl, Amos D Korczyn, Giuseppe Lanza, Jelka Jansa, Robert Hoerr, Alla Guekht
BACKGROUND: Vascular cognitive impairment (VCI) is a complex spectrum encompassing post-stroke cognitive impairment (PSCI) and small vessel disease-related cognitive impairment. Despite the growing health, social, and economic burden of VCI, to date, no specific treatment is available, prompting the introduction of the concept of a disease modifier. CONSENSUS AND SUGGESTIONS: Within this clinical spectrum, VCI and PSCI remain advancing conditions as neurodegenerative diseases with progression of both vascular and degenerative lesions accounting for cognitive decline...
May 24, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28535304/the-interplay-of-micrornas-in-the-inflammatory-mechanisms-following-ischemic-stroke
#5
Seyed Esmaeil Khoshnam, William Winlow, Maryam Farzaneh
Immunity and inflammation are important parameters of the pathophysiology of stroke, a destructive illness that is the second most common cause of death worldwide. Following ischemic stroke, neuroinflammation plays a critical role in neurodegeneration and brain injury. MicroRNAs (miRNAs) are a class of endogenously expressed, noncoding RNA molecules that function to inhibit mRNA translation. Recent studies demonstrate that miRNAs are key regulators of inflammatory processes contributing to ischemic stroke injuries...
May 23, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28531882/%C3%AE-thromboglobulin-and-incident-cardiovascular-disease-risk-the-atherosclerosis-risk-in-communities-study
#6
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
#7
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
#8
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...
May 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28524005/rivaroxaban-metabolism-pharmacologic-properties-and-drug-interactions
#9
Tomas Kvasnicka, Ivana Malikova, Zuzana Zenahlikova, Karolína Kettnerova, Radka Brzezkova, Tomas Zima, Jan Ulrych, Jan Briza, Ivan Netuka, Jan Kvasnicka
BACKGROUND: Rivaroxaban represents a selective direct inhibitor of activated coagulation factor X (FXa) having peroral bioavailability and prompt onset of action. OBJECTIVE: The absorbtion of rivaroxaban is quick, reaching maximum plasma concentration 2-4 hours following its administration. Peroral bioavailability is high (80-100 %) and pharmacokinetic variability is considered to be moderate (coefficient of variation 30-40 %). This review discusses the properties, drug interactions, pharmacokinetics and clinical indications of rivaroxaban...
May 18, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28514624/evacetrapib-and-cardiovascular-outcomes-in-high-risk-vascular-disease
#10
RANDOMIZED CONTROLLED TRIAL
A Michael Lincoff, Stephen J Nicholls, Jeffrey S Riesmeyer, Philip J Barter, H Bryan Brewer, Keith A A Fox, C Michael Gibson, Christopher Granger, Venu Menon, Gilles Montalescot, Daniel Rader, Alan R Tall, Ellen McErlean, Kathy Wolski, Giacomo Ruotolo, Burkhard Vangerow, Govinda Weerakkody, Shaun G Goodman, Diego Conde, Darren K McGuire, Jose C Nicolau, Jose L Leiva-Pons, Yves Pesant, Weimin Li, David Kandath, Simon Kouz, Naeem Tahirkheli, Denise Mason, Steven E Nissen
BACKGROUND: The cholesteryl ester transfer protein inhibitor evacetrapib substantially raises the high-density lipoprotein (HDL) cholesterol level, reduces the low-density lipoprotein (LDL) cholesterol level, and enhances cellular cholesterol efflux capacity. We sought to determine the effect of evacetrapib on major adverse cardiovascular outcomes in patients with high-risk vascular disease. METHODS: In a multicenter, randomized, double-blind, placebo-controlled phase 3 trial, we enrolled 12,092 patients who had at least one of the following conditions: an acute coronary syndrome within the previous 30 to 365 days, cerebrovascular atherosclerotic disease, peripheral vascular arterial disease, or diabetes mellitus with coronary artery disease...
May 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28511155/-the-role-of-inflammatory-biomarkers-in-cardiovascular-risk-stratification
#11
Світлана Г Пузік
INTRODUCTION: The increase in cardiovascular diseases requires the search for ways to predict complications based on research additional to traditional risk factors, conduct a study of the formation mechanisms of these complications and to design new treatment strategies. AIM: To get an idea about the relationship between inflammation in the blood vessels, atherosclerosis and cardiovascular consequences based on the study of the role of biomarkers of inflammation...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28505148/potential-pathogenesis-and-biomarkers-of-kidney-cancer-related-stroke
#12
Haihong Jiang, Chao Qin, Daobin Cheng, Qiuhong Lu, Gelun Huang, Dacheng Wang, Hong Yang, Zhijian Liang
BACKGROUND Stroke risk and stroke recurrence are increased in cancer patients, but the pathogenesis and biomarkers of kidney cancer-related stroke (KCS) are generally unclear. The aim of the present research was to investigate the pathogenesis and plasma biomarkers of kidney cancer-related stroke. MATERIAL AND METHODS A retrospective review was conducted on acute stroke patients with kidney cancer (KC) who were admitted to the hospital between January 2006 and December 2015. A total of 106 patients with KCS (active KC patients with acute stroke but without conventional vascular risks) were identified...
May 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28498508/stroke-in-women-risk-factors-and-clinical-biomarkers
#13
Hamed Mirzaei
Stroke has been emerged as one of major health problems for women worldwide. Increasing of knowledge in this field provided new data in this area which contribute to finding of new risk factors and could improve stroke treatment. A large number studies indicated a variety of risk factors including sex, age, race, smoking, diabetes, and physical inactivity could be involved in stroke in women. The understanding of various aspects involved in women stroke including risk factors, outcomes, stroke recovery, and prevention could provide new therapeutic platforms which could likely lead to better treatment in women stroke...
May 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28495863/soluble-urokinase-plasminogen-activator-receptor-and-outcomes-in-patients-with-diabetes-on-hemodialysis
#14
Christiane Drechsler, Salim S Hayek, Changli Wei, Sanja Sever, Bernd Genser, Vera Krane, Andreas Meinitzer, Winfried März, Christoph Wanner, Jochen Reiser
BACKGROUND AND OBJECTIVES: Soluble urokinase plasminogen activator receptor is a novel biomarker strongly predictive of cardiovascular outcomes implicated in the pathogenesis of kidney disease. Soluble urokinase plasminogen activator receptor levels, however, correlate with declining kidney function. It is unclear whether soluble urokinase plasminogen activator receptor levels remain associated with outcomes in patients with ESRD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We measured plasma soluble urokinase plasminogen activator receptor levels in 1175 patients (mean age =66±8 years old, 54% men) with type 2 diabetes mellitus on hemodialysis participating in the German Diabetes and Dialysis Study followed for a median of 4 years for outcomes including all-cause death, cardiovascular events, and infection-related mortality...
May 11, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28494460/persistently-altered-metabolic-phenotype-following-perinatal-excitotoxic-brain-injury
#15
Benjamin J Blaise, Leslie Schwendimann, Vibol Chhor, Vincent Degos, Mark P Hodson, Guido Dallmann, Matthias Keller, Pierre Gressens, Bobbi Fleiss
Excitotoxicity plays a key role during insults to the developing brain such as neonatal encephalopathy, stroke, and encephalopathy of prematurity. Such insults affect many thousands of infants each year. Excitotoxicity causes frank lesions due to cell death and gliosis and disturbs normal developmental process, leading to deficits in learning, memory, and social integration that persist into adulthood. Understanding the underlying processes of the acute effects of excitotoxicity and its persistence during brain maturation provides an opportunity to identify mechanistic or diagnostic biomarkers, thus enabling and designing possible therapies...
May 12, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28493892/hiv-infection-as-vascular-risk-a-systematic-review-of-the-literature-and-meta-analysis
#16
Jose Gutierrez, Ana Letícia A Albuquerque, Louise Falzon
IMPORTANCE: The vascular risk attributable to HIV infection is rising. The heterogeneity of the samples studied is an obstacle to understanding whether HIV is a vascular risk across geographic regions. OBJECTIVE: To test the hypothesis that HIV infection is a vascular risk factor, and that the risk conferred by HIV varies by geographical region. DATA SOURCES: A systematic search of publications was carried out in seven electronic databases: PubMed, The Cochrane Library, EMBASE, Web of Science, LILACS, ClinicalTrials...
2017: PloS One
https://www.readbyqxmd.com/read/28488565/evaluation-of-parametric-response-mapping-to-assess-therapeutic-response-to-human-mesenchymal-stem-cells-after-experimental-stroke
#17
Rui He, Anaïck Moisan, Olivier Detante, Chantal Rémy, Alexandre Krainik, Emmanuel Luc Barbier, Benjamin Lemasson
Stroke is the leading cause of disability in adults. After the very narrow time frame during which treatment by thrombolysis and mechanical thrombectomy is possible, cell therapy has huge potential for enhancing stroke recovery. Accurate analysis of the response to new therapy, using imaging biomarkers, is needed to assess therapeutic efficacy. The aim of this study is to compare two analysis techniques: the parametric response map (PRM), a voxel-based technique, and the standard whole-lesion approach. These two analyses were performed on data collected at 4 time points in a transient middle cerebral artery occlusion (MCAo) model, which was treated with human mesenchymal stem cell (hMSC) therapy...
May 9, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28487339/circulating-fabp4-fatty-acid-binding-protein-4-is-a-novel-prognostic-biomarker-in-patients-with-acute-ischemic-stroke
#18
Wen-Jun Tu, Xian-Wei Zeng, Aijun Deng, Sheng-Jie Zhao, Ding-Zhen Luo, Guo-Zhao Ma, Hong Wang, Qiang Liu
BACKGROUND AND PURPOSE: FABP4 (fatty acid-binding protein 4) is an intracellular lipid chaperone involved in coordination of lipid transportation and atherogenesis. This study aimed at observing the effect of FABP4 on the 3-month outcomes in Chinese patients with acute ischemic stroke. METHODS: In a prospective multicenter observational study, serum concentrations of FABP4 were on admission measured in plasma of 737 consecutive patients with acute ischemic stroke...
May 9, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28487034/usefulness-of-multiple-biomarkers-for-predicting-incident-major-adverse-cardiac-events-in-patients-who-underwent-diagnostic-coronary-angiography-from-the-catheter-sampled-blood-archive-in-cardiovascular-diseases-casablanca-study
#19
Cian P McCarthy, Roland R J van Kimmenade, Hanna K Gaggin, Mandy L Simon, Nasrien E Ibrahim, Parul Gandhi, Noreen Kelly, Shweta R Motiwala, Arianna M Belcher, Jamie Harisiades, Craig A Magaret, Rhonda F Rhyne, James L Januzzi
We sought to develop a multiple biomarker approach for prediction of incident major adverse cardiac events (MACE; composite of cardiovascular death, myocardial infarction, and stroke) in patients referred for coronary angiography. In a 649-participant training cohort, predictors of MACE within 1 year were identified using least-angle regression; over 50 clinical variables and 109 biomarkers were analyzed. Predictive models were generated using least absolute shrinkage and selection operator with logistic regression...
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28484421/the-randomized-controlled-strawinski-trial-procalcitonin-guided-antibiotic-therapy-after-stroke
#20
Lena Ulm, Sarah Hoffmann, Darius Nabavi, Marcella Hermans, Bruno-Marcel Mackert, Frank Hamilton, Ingo Schmehl, Gerhard-Jan Jungehuelsing, Joan Montaner, Alejandro Bustamante, Mira Katan, Andreas Hartmann, Stefan Ebmeyer, Christiane Dinter, Jan C Wiemer, Sabine Hertel, Christian Meisel, Stefan D Anker, Andreas Meisel
BACKGROUND: Pneumonia is among the most common acute complications after stroke and is associated with poor long-term outcome. Biomarkers may help identifying stroke patients at high risk for developing stroke-associated pneumonia (SAP) and to guide early treatment. AIMS: This trial investigated whether procalcitonin (PCT) ultrasensitive (PCTus)-guided antibiotic treatment of SAP can improve functional outcome after stroke. METHODS: In this international, multicenter, randomized, controlled clinical trial with blinded assessment of outcomes, patients with severe ischemic stroke in the middle cerebral artery territory were randomly assigned within 40 h after symptom onset to PCTus-based antibiotic therapy guidance in addition to stroke unit care or standard stroke unit care alone...
2017: Frontiers in Neurology
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