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Biomarker AND Stroke

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https://www.readbyqxmd.com/read/28229894/mobile-stroke-units-for-prehospital-thrombolysis-triage-and-beyond-benefits-and-challenges
#1
REVIEW
Klaus Fassbender, James C Grotta, Silke Walter, Iris Q Grunwald, Andreas Ragoschke-Schumm, Jeffrey L Saver
In acute stroke management, time is brain. Bringing swift treatment to the patient, instead of the conventional approach of awaiting the patient's arrival at the hospital for treatment, is a potential strategy to improve clinical outcomes after stroke. This strategy is based on the use of an ambulance (mobile stroke unit) equipped with an imaging system, a point-of-care laboratory, a telemedicine connection to the hospital, and appropriate medication. Studies of prehospital stroke treatment consistently report a reduction in delays before thrombolysis and cause-based triage in regard to the appropriate target hospital (eg, primary vs comprehensive stroke centre)...
March 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28229841/-neuroimaging-and-blood-biomarkers-in-functional-prognosis-after-stroke
#2
REVIEW
João Paulo Branco, Joana Santos Costa, João Sargento-Freitas, Sandra Oliveira, Bruno Mendes, Jorge Laíns, João Pinheiro
INTRODUCTION: Stroke remains one of the leading causes of morbidity and mortality around the world and it is associated with an important long-term functional disability. Some neuroimaging resources and certain peripheral blood or cerebrospinal fluid proteins can give important information about etiology, therapeutic approach, follow-up and functional prognosis in acute ischemic stroke patients. However, among the scientific community, there is currently more interest in the stroke vital prognosis over the functional prognosis...
November 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28225483/homocysteine-and-all-cause-mortality-in-hypertensive-adults-without-pre-existing-cardiovascular-conditions-effect-modification-by-mthfr-c677t-polymorphism
#3
Benjamin Xu, Xiangyi Kong, Richard Xu, Yun Song, Lishun Liu, Ziyi Zhou, Rui Gu, Xiuli Shi, Min Zhao, Xiao Huang, Mingli He, Jia Fu, Yefeng Cai, Ping Li, Xiaoshu Cheng, Changyan Wu, Fang Chen, Yan Zhang, Genfu Tang, Xianhui Qin, Binyan Wang, Hao Xue, Yundai Chen, Ye Tian, Ningling Sun, Yimin Cui, Fan Fan Hou, Jianping Li, Yong Huo
BACKGROUND: Previous studies support an association between elevated total homocysteine (tHcy) levels and increased all-cause mortality. However, few prospective studies have examined this association in hypertensive patients, and/or tested any effect modification by the methylene tetrahydrofolate reductase (MTHFR) C677T genotype. METHODS: This was a post hoc analysis of the China Stroke Primary Prevention Trial. Serum tHcy and folate were measured at baseline. Individual MTHFR C677T genotype (CC, CT, and TT) was determined...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28224419/a-retrospective-study-of-branch-atheromatous-disease-analyses-of-risk-factors-and-prognosis
#4
Yang Liu, Yuan-Teng Fan, Yu-Min Liu, Tao Wang, Hong-Liang Feng, Guang-Zhi Liu, Bin Mei
The theory of branch atheromatous disease (BAD) has been commonly underused in clinical practice and research since it was proposed in 1989. In this study, we sought to explore clinical characteristics of its substypes and biomarkers for prognosis of BAD. A total of 176 consecutive patients with BAD were classified into two groups: paramedianpontine artery group (PPA group, n=70) and lenticulostriate artery group (LSA group, n=106). Bivariate analyses were used to explore the relationship between white matter hyperintensities (WMHs), National Institutes of Health Stroke Scale (NIHSS) scores and prognosis evaluated by the modified Rank Scale (mRS) at 6th month after stroke...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28222567/immune-biomarkers-for-the-diagnosis-of-mild-traumatic-brain-injury
#5
Ashley B Petrone, Valerie Gionis, Richard Giersch, Taura L Barr
BACKGROUND: In 2010, there were approximately 2.2 million emergency room visits associated with traumatic brain injury (TBI), with 80 percent diagnosed as mild TBI or concussion. In addition, there are a large number of TBIs, especially mild TBIs, which go either unreported by patients or initially undiagnosed by clinicians. Our team has previously identified a panel of immune-related genes that can diagnose ischemic stroke at triage, and due to shared pathophysiological mechanisms of TBI and stroke, we hypothesized that this panel of genes may also be utilized for the diagnosis of TBI...
February 10, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28214523/abnormal-functional-networks-in-resting-state-of-the-sub-cortical-chronic-stroke-patients-with-hemiplegia
#6
Ye Zhang, Li Wang, Jun Yang, Rubing Yan, Jingna Zhang, Linqiong Sang, Pengyue Li, Hongliang Liu, Mingguo Qiu
The aim of this study isto identify the properties of the motor network and the default-mode network (DMN) of the sub-cortical chronic stroke patients, and to study the relationship between the network connectivity and the neurological scales of the stroke patients.Twenty-eight chronic stroke patients (28-77 days post-stroke) and twenty-eight healthy control subjects (HCs) were recruited. Independent component analysis (ICA) was performed to obtain the motor network and the DMN. Two sample t-tests was used to compare the differences of the motor network and the DMN between the patients and HCs...
February 15, 2017: Brain Research
https://www.readbyqxmd.com/read/28199366/micrornas-regulating-cluster-of-differentiation-46-cd46-in-cardioembolic-and-non-cardioembolic-stroke
#7
Jun Rong Tan, Kay Sin Tan, Fung Lin Yong, Arunmozhiarasi Armugam, Chee Woon Wang, Kandiah Jeyaseelan, Peter Tsun-Hon Wong
Ischemic stroke is a major cause of mortality and morbidity globally. Among the ischemic stroke subtypes, cardioembolic stroke is with poor functional outcome (Modified Rankin score ≥ 2). Early diagnosis of cardioembolic stroke will prove beneficial. This study examined the microRNAs targeting cluster of differentiation 46 (CD46), a potential biomarker for cardioembolic stroke. CD46 mRNA level was shown to be differentially expressed (p < 0.001) between cardioembolic stroke (median = 1.32) and non-cardioembolic stroke subtypes (large artery stroke median = 5...
2017: PloS One
https://www.readbyqxmd.com/read/28193834/genome-wide-analysis-of-the-circulating-mirnome-after-cerebral-ischemia-reveals-a-reperfusion-induced-microrna-cluster
#8
Stefan Uhlmann, Eva Mracsko, Ehsan Javidi, Sarah Lamble, Ana Teixeira, Agnes Hotz-Wagenblatt, Karl-Heinz Glatting, Roland Veltkamp
BACKGROUND AND PURPOSE: Circulating microRNAs (miRNAs) are emerging biomarkers for stroke because of their high stability in the bloodstream and association with pathophysiologic conditions. However, the circulating whole-genome miRNAs (miRNome) has not been characterized comprehensively in the acute phase of stroke. METHODS: We profiled the circulating miRNome in mouse models of acute ischemic and hemorrhagic stroke by next-generation sequencing. Stroke models were compared with sham-operated and naive mice to identify deregulated circulating miRNAs...
February 13, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28190951/allostatic-load-as-a-complex-clinical-construct-a-case-based-computational-modeling-approach
#9
J Galen Buckwalter, Brian Castellani, Bruce McEwen, Arun S Karlamangla, Albert A Rizzo, Bruce John, Kyle O'Donnell, Teresa Seeman
Allostatic load (AL) is a complex clinical construct, providing a unique window into the cumulative impact of stress. However, due to its inherent complexity, AL presents two major measurement challenges to conventional statistical modeling (the field's dominant methodology): it is comprised of a complex causal network of bioallostatic systems, represented by an even larger set of dynamic biomarkers; and, it is situated within a web of antecedent socioecological systems, linking AL to differences in health outcomes and disparities...
September 2016: Complexity
https://www.readbyqxmd.com/read/28174096/retinal-biomarkers-provide-insight-into-cortical-pharmacology-and-disease
#10
REVIEW
Christine To Nguyen, Flora Hui, Jason Charng, Shajan Velaedan, Anna van Koeverden, Jeremiah Kh Lim, Zheng He, Vickie Hy Wong, Algis J Vingrys, Bang V Bui, Magnus Ivarsson
The retina is an easily accessible out-pouching of the central nervous system (CNS) and thus lends itself favourable to being a biomarker of the brain. More specifically, the presence of neuronal, vascular and blood-neural barrier parallels in the eye and brain coupled with fast and inexpensive methods to quantify retinal changes make ocular biomarkers an attractive option. This includes its utility as a biomarker for multiple cerebrovascular diseases as well as a drug pharmacology and safety biomarker for the CNS...
February 4, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28171699/c-reactive-protein-in-the-detection-of-post-stroke-infections-systematic-review-and-individual-participant-data-analysis
#11
Alejandro Bustamante, Andrea Vilar-Bergua, Sophie Guettier, Josep Sánchez-Poblet, Teresa García-Berrocoso, Dolors Giralt, Felix Fluri, Raffi Topakian, Hans Worthmann, Andreas Hug, Tihamer Molnar, Ulrike Waje-Andreassen, Mira Katan, Craig J Smith, Joan Montaner
We conducted a systematic review and individual participant data meta-analysis to explore the role of C-reactive protein (CRP) in early detection or prediction of post-stroke infections. CRP, an acute-phase reactant binds to the phosphocholine expressed on the surface of dead or dying cells and some bacteria, thereby activating complement and promoting phagocytosis by macrophages. We searched PubMed up to May-2015 for studies measuring CRP in stroke and evaluating post-stroke infections. Individual participants' data were merged into a single database...
February 7, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28155611/galectins-a-potential-target-for-cardiovascular-therapy
#12
Ghulam Md Ashraf, Asma Perveen, Syed Kashif Zaidi, Ausaf Ahmad, Shazi Shakil, Chelapram Kandy Firoz, Nasimudeen R Jabir, Iftekhar Hassan, Taqi Ahmad Khan, Nagendra Sastry Yarla, Shams Tabrez
Cells constantly adapt to external humoral cues like cytokines and hormones, but practically most cellular behavior is under locally guided control via cell-cell interactions. Galectins (Gals) are one of the most prominent members of the group of molecules involved in this intercellular signaling. They are the family of β-galactoside specific lectins and consist of 15 different types, each with a specific function. They play crucial role in the immune system, inflammation, wound healing and carcinogenesis...
February 1, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28154100/stroke-caused-by-atherosclerosis-of-the-major-intracranial-arteries
#13
Chirantan Banerjee, Marc I Chimowitz
Our goal in this review is to discuss the pathophysiology, diagnosis, and treatment of stroke caused by atherosclerosis of the major intracranial arteries. References for the review were identified by searching PubMed for related studies published from 1955 to June 2016 using search terms intracranial stenosis and intracranial atherosclerosis. Reference sections of published randomized clinical trials and previously published reviews were searched for additional references. Intracranial atherosclerotic disease is a highly prevalent cause of stroke that is associated with a high risk of recurrent stroke...
February 3, 2017: Circulation Research
https://www.readbyqxmd.com/read/28150186/serelaxin-in-acute-heart-failure-patients-with-and-without-atrial-fibrillation-a-secondary-analysis-of-the-relax-ahf-trial
#14
Gerasimos Filippatos, Dimitrios Farmakis, Marco Metra, Gad Cotter, Beth A Davison, G Michael Felker, Barry H Greenberg, Tsushung A Hua, Peter S Pang, Piotr Ponikowski, Min Qian, Thomas A Severin, Adriaan A Voors, John R Teerlink
BACKGROUND: Atrial fibrillation (AFib) is a common comorbidity in HF and affects patients' outcome. We sought to assess the effects of serelaxin in patients with and without AFib. METHODS: In a post hoc analysis of the RELAX-AHF trial, we compared the effects of serelaxin on efficacy end points, safety end points and biomarkers in 1161 patients with and without AFib on admission electrocardiogram. RESULTS: AFib was present in 41.3% of patients...
February 1, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28139706/identification-of-mirna-lncrna-and-mrna-associated-cerna-networks-and-potential-biomarker-for-melas-with-mitochondrial-dna-a3243g-mutation
#15
Wei Wang, Qianqian Zhuang, Kunqian Ji, Bing Wen, Pengfei Lin, Yuying Zhao, Wei Li, Chuanzhu Yan
Researchers in the field of mitochondrial biology are increasingly unveiling of the complex mechanisms between mitochondrial dysfunction and noncoding RNAs (ncRNAs). However, roles of ncRNAs underlying mitochondrial myopathy remain unexplored. The aim of this study was to elucidate the regulating networks of dysregulated ncRNAs in Mitochondrial myopathy, Encephalopathy, Lactic Acidosis, and Stroke-like episodes (MELAS) with mitochondrial DNA (mtDNA) A3243G mutation, which might make contributions to the unveiling of the complex mechanisms underlying mitochondrial myopathy and, possibly, new tools applicable to clinical practice...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28138511/strokog-stroke-and-cognition-consortium-an-international-consortium-to-examine-the-epidemiology-diagnosis-and-treatment-of-neurocognitive-disorders-in-relation-to-cerebrovascular-disease
#16
Perminder S Sachdev, Jessica W Lo, John D Crawford, Lisa Mellon, Anne Hickey, David Williams, Régis Bordet, Anne-Marie Mendyk, Patrick Gelé, Dominique Deplanque, Hee-Joon Bae, Jae-Sung Lim, Amy Brodtmann, Emilio Werden, Toby Cumming, Sebastian Köhler, Frans R J Verhey, Yan-Hong Dong, Hui Hui Tan, Christopher Chen, Xu Xin, Raj N Kalaria, Louise M Allan, Rufus O Akinyemi, Adesola Ogunniyi, Aleksandra Klimkowicz-Mrowiec, Martin Dichgans, Frank A Wollenweber, Vera Zietemann, Michael Hoffmann, David W Desmond, Thomas Linden, Christian Blomstrand, Björn Fagerberg, Ingmar Skoog, Olivier Godefroy, Mélanie Barbay, Martine Roussel, Byung-Chul Lee, Kyung-Ho Yu, Joanna Wardlaw, Stephen J Makin, Fergus N Doubal, Francesca M Chappell, Velandai K Srikanth, Amanda G Thrift, Geoffrey A Donnan, Nagaendran Kandiah, Russell J Chander, Xuling Lin, Charlotte Cordonnier, Solene Moulin, Costanza Rossi, Behnam Sabayan, David J Stott, J Wouter Jukema, Susanna Melkas, Hanna Jokinen, Timo Erkinjuntti, Vincent C T Mok, Adrian Wong, Bonnie Y K Lam, Didier Leys, Hilde Hénon, Stéphanie Bombois, Darren M Lipnicki, Nicole A Kochan
INTRODUCTION: The Stroke and Cognition consortium (STROKOG) aims to facilitate a better understanding of the determinants of vascular contributions to cognitive disorders and help improve the diagnosis and treatment of vascular cognitive disorders (VCD). METHODS: Longitudinal studies with ≥75 participants who had suffered or were at risk of stroke or TIA and which evaluated cognitive function were invited to join STROKOG. The consortium will facilitate projects investigating rates and patterns of cognitive decline, risk factors for VCD, and biomarkers of vascular dementia...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28134282/does-von-willebrand-factor-improve-the-predictive-ability-of-current-risk-stratification-scores-in-patients-with-atrial-fibrillation
#17
Amaya García-Fernández, Vanessa Roldán, José Miguel Rivera-Caravaca, Diana Hernández-Romero, Mariano Valdés, Vicente Vicente, Gregory Y H Lip, Francisco Marín
Von Willebrand factor (vWF) is a biomarker of endothelial dysfunction. We investigated its role on prognosis in anticoagulated atrial fibrillation (AF) patients and determined whether its addition to clinical risk stratification schemes improved event-risk prediction. Consecutive outpatients with non-valvular AF were recruited and rates of thrombotic/cardiovascular events, major bleeding and mortality were recorded. The effect of vWF on prognosis was calculated using a Cox regression model. Improvements in predictive accuracy over current scores were determined by calculating the integrated discrimination improvement (IDI), net reclassification improvement (NRI), comparison of receiver-operator characteristic (ROC) curves and Decision Curve Analysis (DCA)...
January 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28131900/non-coding-rnas-and-neuroprotection-after-acute-cns-injuries
#18
Raghavendar Chandran, Suresh L Mehta, Raghu Vemuganti
Accumulating evidence indicates that various classes of non-coding RNAs (ncRNAs) including microRNAs (miRNAs), PIWI-interacting RNAs (piRNAs) and long non-coding RNAs (lncRNAs) play important roles in normal state as well as the diseases of the CNS. Interestingly, ncRNAs have been shown to interact with messenger RNA, DNA and proteins, and these interactions could induce epigenetic modifications and control transcription and translation, thereby adding a new layer of genomic regulation. The ncRNA expression profiles are known to be altered after acute CNS injuries including stroke, traumatic brain injury and spinal cord injury that are major contributors of morbidity and mortality worldwide...
January 26, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28129736/identification-of-new-biosignatures-for-clinical-outcomes-in-stable-coronary-artery-disease-the-study-protocol-and-initial-observations-of-a-prospective-follow-up-study-in-taiwan
#19
Hsin-Bang Leu, Wei-Hsian Yin, Wei-Kung Tseng, Yen-Wen Wu, Tsung-Hsien Lin, Hung-I Yeh, Kuan-Cheng Chang, Ji-Hung Wang, Chau-Chung Wu, Jaw-Wen Chen
BACKGROUND: Either classic or novel biomarkers have not been well investigated for clinical outcomes of coronary artery disease (CAD) in Asian people especially ethnic Chinese. We reported here a prospective national-based follow-up study that aims to elucidate the clinical profiles and to identify the new biosignatures (especially the non-lipid profile and inflammatory biomakers) for future clinical outcomes in a sizable cohort of stable CAD patients in Taiwan. METHODS: A total of 2500 CAD patients under stable condition after successful percutaneous coronary intervention will be enrolled for clinical data collection and blood/urine sampling in northern, southern, western, or eastern part of Taiwan between 2012 and 2017...
January 28, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28126752/cerebral-temperature-dysregulation-mr-thermographic-monitoring-in-a-nonhuman-primate-study-of-acute-ischemic-stroke
#20
S Dehkharghani, C C Fleischer, D Qiu, M Yepes, F Tong
BACKGROUND AND PURPOSE: Cerebral thermoregulation remains poorly understood. Temperature dysregulation is deeply implicated in the potentiation of cerebrovascular ischemia. We present a multiphasic, MR thermographic study in a nonhuman primate model of MCA infarction, hypothesizing detectable brain temperature disturbances and brain-systemic temperature decoupling. MATERIALS AND METHODS: Three Rhesus Macaque nonhuman primates were sourced for 3-phase MR imaging: 1) baseline MR imaging, 2) 7-hour continuous MR imaging following minimally invasive, endovascular MCA stroke induction, and 3) poststroke day 1 MR imaging follow-up...
January 26, 2017: AJNR. American Journal of Neuroradiology
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