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Biomarker AND Stroke

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https://www.readbyqxmd.com/read/28936733/exosomes-based-biomarkers-for-the-prognosis-of-cardiovascular-diseases
#1
Yihua Bei, Pujiao Yu, Dragos Cretoiu, Sanda Maria Cretoiu, Junjie Xiao
Cardiovascular diseases (CVDs) have a high prevalence and annually increasing incidence with high mortality and morbidity. Identification of biomarkers with high sensitivity and specificity for assessing the prognosis of CVDs is necessary for optimizing personalized treatment and reducing mortality. Exosomes have been proved to be accessible in nearly all body fluids and they can reflect disease stage or progression. Here we summarized exosomes-based biomarkers for the prognosis of coronary artery diseases, heart failure, stroke, hypertension, cardiac arrhythmia, cardiomyopathy, valvular heart diseases and pulmonary arterial hypertension...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28934920/agreed-definitions-and-a-shared-vision-for-new-standards-in-stroke-recovery-research-the-stroke-recovery-and-rehabilitation-roundtable-taskforce
#2
Julie Bernhardt, Kathryn S Hayward, Gert Kwakkel, Nick S Ward, Steven L Wolf, Karen Borschmann, John W Krakauer, Lara A Boyd, S Thomas Carmichael, Dale Corbett, Steven C Cramer
The first Stroke Recovery and Rehabilitation Roundtable established a game changing set of new standards for stroke recovery research. Common language and definitions were required to develop an agreed framework spanning the four working groups: translation of basic science, biomarkers of stroke recovery, measurement in clinical trials and intervention development and reporting. This paper outlines the working definitions established by our group and an agreed vision for accelerating progress in stroke recovery research...
September 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28934189/cystatin-c-as-a-predictor-of-cardiovascular-outcomes-in-a-hypertensive-population
#3
R Garcia-Carretero, L Vigil-Medina, O Barquero-Perez, R Goya-Esteban, I Mora-Jimenez, C Soguero-Ruiz, J Ramos-Lopez
Calculating the estimated glomerular filtration rate (eGFR) using creatinine-based equations may underestimate cardiovascular risk. Cystatin C-based eGFR may be a stronger prognostic biomarker than creatinine-based eGFR when assessing cardiovascular outcomes and mortality. Our aim was to determine whether levels of serum cystatin C, as an estimator of GFR, had a higher predictive value than creatinine-based eGFR for incident cardiovascular disease among hypertensive patients. We retrospectively analyzed the records of 2016 hypertensive patients from the Hypertension Unit at Mostoles University Hospital between 2006 and 2016...
September 21, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28931617/normobaric-hyperoxia-reduces-blood-occludin-fragments-in-rats-and-patients-with-acute-ischemic-stroke
#4
Shuhai Shi, Zhifeng Qi, Qingfeng Ma, Rong Pan, Graham S Timmins, Yongmei Zhao, Wenjuan Shi, Yunzhou Zhang, Xunming Ji, Ke Jian Liu
BACKGROUND AND PURPOSE: Damage of the blood-brain barrier (BBB) increases the incidence of neurovascular complications, especially for cerebral hemorrhage after tPA (tissue-type plasminogen activator) therapy. Currently, there is no effective method to evaluate the extent of BBB damage to guide tPA use. Herein, we investigated whether blood levels of tight junction proteins could serve as biomarker of BBB damages in acute ischemic stroke (AIS) in both rats and patients. We examined whether this biomarker could reflect the extent of BBB permeability during cerebral ischemia/reperfusion and the effects of normobaric hyperoxia (NBO) on BBB damage...
September 20, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28925931/gut-microbiota-dependent-trimethylamine-n-oxide-and-serum-biomarkers-in-patients-with-t2dm-and-advanced-ckd
#5
Mohammed A I Al-Obaide, Ruchi Singh, Palika Datta, Kathy A Rewers-Felkins, Maria V Salguero, Ibtisam Al-Obaidi, Kameswara Rao Kottapalli, Tetyana L Vasylyeva
Trimethylamine-N-oxide (TMAO) is a product of dietary, gut microbiome, and tissues metabolism. Elevated blood TMAO levels are associated with heart attack, stroke and chronic kidney disease (CKD). The purpose of our study was to investigate the gut microbiota associated with trimethylamine (TMA) production, the precursor of TMAO, and the serum levels of TMAO and inflammatory biomarkers associated with type 2 diabetes mellitus (T2DM) and CKD. Twenty adults with T2DM and advanced CKD and 20 healthy adults participated in the study...
September 19, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28923103/moderate-sensitivity-and-high-specificity-of-emergency-department-administrative-data-for-transient-ischemic-attacks
#6
Amy Y X Yu, Hude Quan, Andrew McRae, Gabrielle O Wagner, Michael D Hill, Shelagh B Coutts
BACKGROUND: Validation of administrative data case definitions is key for accurate passive surveillance of disease. Transient ischemic attack (TIA) is a condition primarily managed in the emergency department. However, prior validation studies have focused on data after inpatient hospitalization. We aimed to determine the validity of the Canadian 10th International Classification of Diseases (ICD-10-CA) codes for TIA in the national ambulatory administrative database. METHODS: We performed a diagnostic accuracy study of four ICD-10-CA case definition algorithms for TIA in the emergency department setting...
September 18, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28923099/whole-blood-gene-expression-and-white-matter-hyperintensities
#7
Honghuang Lin, Claudia Satizabal, Zhijun Xie, Qiong Yang, Tianxiao Huan, Roby Joehanes, Chengping Wen, Peter J Munson, Alexa Beiser, Daniel Levy, Sudha Seshadri
BACKGROUND: White matter hyperintensities (WMH) are an important biomarker of cumulative vascular brain injury and have been associated with cognitive decline and an increased risk of dementia, stroke, depression, and gait impairments. The pathogenesis of white matter lesions however, remains uncertain. The characterization of gene expression profiles associated with WMH might help uncover molecular mechanisms underlying WMH. METHODS: We performed a transcriptome-wide association study of gene expression profiles with WMH in 3248 participants from the Framingham Heart Study using the Affymetrix Human Exon 1...
September 18, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28920888/prediction-of-motor-recovery-after-stroke-advances-in-biomarkers
#8
REVIEW
Cathy M Stinear
Stroke remains a leading cause of adult disability, and the recovery of motor function after stroke is crucial for the patient to regain independence. However, making accurate predictions of a patient's motor recovery and outcome is difficult when based on clinical assessment alone. Clinical assessment of motor impairment within a few days of stroke can help to predict subsequent recovery, while neurophysiological and neuroimaging biomarkers of corticomotor structure and function can help to predict both motor recovery and motor outcome after stroke...
October 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28919535/altered-gray-matter-volume-cerebral-blood-flow-and-functional-connectivity-in-chronic-stroke-patients
#9
Peifang Miao, Caihong Wang, Peng Li, Sen Wei, Chunshan Deng, Dandan Zheng, Jingliang Cheng
It is entangled connections and intensive functional interactions between cortex and subcortical structures that enable our brain to perform delicate movement, and poses plasticity to recover from stroke. However, it is still unclear how cortical structures and functions change in well-recovered patients from subcortical infarctions in motor pathway. In order to reveal neuroplasticity underlying well-recovered stroke patients, both structural (gray matter volume, GMV) and functional reorganizations (cerebral blood flow, CBF and resting-state functional connectivity, rsFC) were investigated by using multi-modal MRI...
September 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28918752/correlation-of-csf-flow-using-phase-contrast-mri-with-ventriculomegaly-and-csf-opening-pressure-in-mucopolysaccharidoses
#10
Amauri Dalla Corte, Carolina F M de Souza, Maurício Anés, Fabio K Maeda, Armelle Lokossou, Leonardo M Vedolin, Maria Gabriela Longo, Monica M Ferreira, Solanger G P Perrone, Olivier Balédent, Roberto Giugliani
BACKGROUND: Very little is known about the incidence and prevalence of hydrocephalus in patients with mucopolysaccharidoses (MPS). The biggest challenge is to distinguish communicating hydrocephalus from ventricular dilatation secondary to brain atrophy, because both conditions share common clinical and neuroradiological features. The main purpose of this study is to assess the relationship between ventriculomegaly, brain and cerebrospinal fluid (CSF) volumes, aqueductal and cervical CSF flows, and CSF opening pressure in MPS patients, and to provide potential biomarkers for abnormal CSF circulation...
September 18, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28918259/disrupted-structural-and-functional-connectivity-networks-in-ischemic-stroke-patients
#11
Jingna Zhang, Ye Zhang, Li Wang, Linqiong Sang, Jun Yang, Rubing Yan, Pengyue Li, Jian Wang, Mingguo Qiu
Local lesions caused by stroke may result in extensive structural and functional reorganization in the brain. Previous studies of this phenomenon have focused on specific brain networks. Here, we aimed to discover abnormalities in whole-brain networks and to explore the decoupling between structural and functional connectivity in patients with stroke. Fifteen ischemic stroke patients and 23 normal controls (NCs) were recruited in this study. A graph theoretical analysis was employed to investigate the abnormal topological properties of structural and functional brain networks in patients with stroke...
September 13, 2017: Neuroscience
https://www.readbyqxmd.com/read/28913677/thus-far-and-no-further-should-diastolic-hypotension-limit-intensive-blood-pressure-lowering
#12
REVIEW
Marcel Ruzicka, Cedric Edwards, Brendan McCormick, Swapnil Hiremath
Intensive blood pressure lowering to systolic blood pressure thresholds of less than 120 mmHg is making a slow comeback with the publication of trials supporting its benefit, especially in lowering stroke and congestive heart failure. At the same time, there is an increasing awareness of the prevalence and risk of diastolic hypotension, especially at levels of less than 60 mmHg, with support for the existence of a J-curve coming from post hoc analyses of trials and epidemiological data from large cohort studies...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28905172/n-terminal-pro-b-type-natriuretic-peptide-and-the-risk-of-stroke-among-patients-hospitalized-with-acute-heart-failure-an-apex-trial-substudy
#13
Gerald Chi, James L Januzzi, Serge Korjian, Yazan Daaboul, Samuel Z Goldhaber, Adrian F Hernandez, Russell D Hull, Alex Gold, Alexander T Cohen, Robert A Harrington, C Michael Gibson
BACKGROUND: Among patients hospitalized with acute heart failure (HF), the prognostic value of N-terminal pro-B-type natriuretic peptide (NT-proBNP) in short-term stroke prediction remains unclear. METHODS: In the APEX trial, 7513 patients hospitalized for an acute medical illness were randomized to receive either extended-duration betrixaban (80 mg once daily for 35-42 days) or standard-of-care enoxaparin (40 mg once daily for 10 ± 4 days) for venous thromboprophylaxis...
September 13, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28901185/evaluation-of-parametric-response-mapping-to-assess-therapeutic-response-to-human-mesenchymal-stem-cells-after-experimental-stroke
#14
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 was to compare 2 analysis techniques: the parametric response map (PRM), a voxel-based technique, and the standard whole-lesion approach. These 2 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 cells (hMSCs)...
August 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28893572/reduced-severity-of-outcome-of-recurrent-ipsilateral-transient-cerebral-ischemia-compared-with-contralateral-transient-cerebral-ischemia-in-rats
#15
Chenyu Fan, Li Zhang, Zhijie He, Peng Shao, Li Ding, Guili Wang, Wenxiu Niu, Jie Jia
BACKGROUND: To investigate whether prior transient ischemic attack (TIA) had a preconditioning effect on subsequent cerebral infarction in a rat model using middle cerebral artery occlusion (MCAO). METHODS: Thirty-six adult male Sprague-Dawley rats were divided into 3 groups: those with transient (5 minutes) left MCAO (left TIA) (n = 15), those with transient right MCAO (right TIA) (n = 15), and a sham operation group (n = 6). Seven days after the initial transient MCAO, rats in all groups underwent permanent left MCAO...
September 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28893184/the-canadian-hiv-and-aging-cohort-study-determinants-of-increased-risk-of-cardio-vascular-diseases-in-hiv-infected-individuals-rationale-and-study-protocol
#16
Madeleine Durand, Carl Chartrand-Lefebvre, Jean-Guy Baril, Sylvie Trottier, Benoit Trottier, Marianne Harris, Sharon Walmsley, Brian Conway, Alexander Wong, Jean-Pierre Routy, Colin Kovacs, Paul A MacPherson, Kenneth Marc Monteith, Samer Mansour, George Thanassoulis, Michal Abrahamowicz, Zhitong Zhu, Christos Tsoukas, Petronela Ancuta, Nicole Bernard, Cécile L Tremblay
BACKGROUND: With potent antiretroviral drugs, HIV infection is becoming a chronic disease. Emergence of comorbidities, particularly cardiovascular disease (CVD) has become a leading concern for patients living with the infection. We hypothesized that the chronic and persistent inflammation and immune activation associated with HIV disease leads to accelerated aging, characterized by CVD. This will translate into higher incidence rates of CVD in HIV infected participants, when compared to HIV negative participants, after adjustment for traditional CVD risk factors...
September 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28892656/plasma-let-7i-and-mir-15a-expression-are-associated-with-the-effect-of-recombinant-tissue-plasminogen-activator-treatment-in-acute-ischemic-stroke-patients
#17
Wei Xiang, Canhui Tian, Jingru Lin, Xiaohui Wu, Guanlai Pang, Liang Zhou, Suyue Pan, Zhen Deng
Circulating microRNAs (miRNAs) have been reported as diagnosis biomarkers and predictors in acute ischemic stroke (AIS). However, how the expression of circulating miRNAs changes after recombinant tissue plasminogen activator (rt-PA) treatment in AIS patients is still unknown. OBJECTIVE: To determine the expression of circulating miRNAs in AIS patients receiving rt-PA treatment and those not receiving it. METHODS: Blood samples were collected 24h after onset from 40 AIS patients receiving rt-PA treatment and 46 AIS patients (admission at 8-24h of onset) not receiving rt-PA treatment...
September 5, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28892413/enhancing-the-real-world-prediction-of-cardiovascular-events-and-major-bleeding-with-the-cha2ds2-vasc-and-has-bled-scores-using-multiple-biomarkers
#18
Vanessa Roldán, José Miguel Rivera-Caravaca, Alena Shantsila, Amaya García-Fernández, María Asunción Esteve-Pastor, Juan Antonio Vilchez, Marta Romera, Mariano Valdés, Vicente Vicente, Francisco Marín, Gregory Y H Lip
BACKGROUND: Atrial fibrillation (AF)-European guidelines suggest the use of biomarkers to stratify patients for stroke and bleeding risks. We investigated if a multi-biomarker strategy improved the predictive performance of CHA2DS2-VASc and HAS-BLED in anticoagulated AF patients. METHODS: We included consecutive patients stabilized for 6 months on vitamin K antagonists (INRs 2.0-3.0). High sensitivity troponin T, N-proBNP, interleukin 6, von Willebrand factor concentrations and glomerular filtration rate (eGFR; using MDRD-4 formula) were quantified at baseline...
September 11, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28890692/white-matter-injury-after-intracerebral-hemorrhage-pathophysiology-and-therapeutic-strategies
#19
REVIEW
Chuanyuan Tao, Xin Hu, Hao Li, Chao You
Intracerebral hemorrhage (ICH) accounts for 10%-30% of all types of stroke. Bleeding within the brain parenchyma causes gray matter (GM) destruction as well as proximal or distal white matter (WM) injury (WMI) due to complex pathophysiological mechanisms. Because WM has a distinct cellular architecture, blood supply pattern and corresponding function, and its response to stroke may vary from that of GM, a better understanding of the characteristics of WMI following ICH is essential and may shed new light on treatment options...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28887388/minocycline-in-acute-cerebral-hemorrhage-an-early-phase-randomized-trial
#20
Abdelrahman Y Fouda, Andrea S Newsome, Samantha Spellicy, Jennifer L Waller, Wenbo Zhi, David C Hess, Adviye Ergul, David J Edwards, Susan C Fagan, Jeffrey A Switzer
BACKGROUND AND PURPOSE: Minocycline is under investigation as a neurovascular protective agent for stroke. This study evaluated the pharmacokinetic, anti-inflammatory, and safety profile of minocycline after intracerebral hemorrhage. METHODS: This study was a single-site, randomized controlled trial of minocycline conducted from 2013 to 2016. Adults ≥18 years with primary intracerebral hemorrhage who could have study drug administered within 24 hours of onset were included...
September 8, 2017: Stroke; a Journal of Cerebral Circulation
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