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Homocysteine and stroke

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https://www.readbyqxmd.com/read/28524030/-preventive-effect-of-vitamin-b-supplementation-on-recurrent-stroke-a-meta-analysis
#1
Guining Dai, Hongzhen Du, Hongmin Wang, Yujia Wei, Ying Xie, Zengning Li
OBJECTIVE: To evaluate whether Vitamin B supplementation could prevent ischemic stroke recurrence. METHODS: Randomized controlled trials (RCTs) observing Vitamin B supplementation in patients with stroke was performed in databases including ScienceDirect, PubMed/Medline, China National Knowledge Infrastructure, Chinese Biomedical Data-Base, Wanfang Database, and VIP Chinese Science and Technology Journal Database to find related studies in English or Chinese published before August 2016...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28477314/the-role-of-emerging-risk-factors-in-cardiovascular-outcomes
#2
REVIEW
Ben Lacey, William G Herrington, David Preiss, Sarah Lewington, Jane Armitage
PURPOSE OF REVIEW: This review discusses the recent evidence for a selection of blood-based emerging risk factors, with particular reference to their relation with coronary heart disease and stroke. RECENT FINDINGS: For lipid-related emerging risk factors, recent findings indicate that increasing high-density lipoprotein cholesterol is unlikely to reduce cardiovascular risk, whereas reducing triglyceride-rich lipoproteins and lipoprotein(a) may be beneficial. For inflammatory and hemostatic biomarkers, genetic studies suggest that IL-6 (a pro-inflammatory cytokine) and several coagulation factors are causal for cardiovascular disease, but such studies do not support a causal role for C-reactive protein and fibrinogen...
June 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28471900/early-carotid-occlusion-after-endarterectomy-in-a-patient-with-a-mutation-for-mthfr-a1298c-polymorphism
#3
Simone Vidale, Silvio Bellocchi, Paolo Casiraghi, Roberto Caronno, Marco Arnaboldi
INTRODUCTION: Significant carotid stenosis is a well-documented risk factor for ischemic stroke. Carotid endarterectomy (CEA) and carotid artery stenting are effective procedures for the prevention of stroke in patients with this disease. However, the occurrence of restenosis could contribute to an increase in the risk of ischemic stroke. CASE REPORT: A 79-year-old woman was admitted to the Neurosurgical Department to undergo a CEA because of a progressive stenosis...
May 2017: Neurologist
https://www.readbyqxmd.com/read/28456936/combination-of-high-sensitivity-c-reactive-protein-and-homocysteine-predicts-the-post-stroke-depression-in-patients-with-ischemic-stroke
#4
Li-Shan Cheng, Wen-Jun Tu, Yuan Shen, Li-Jun Zhang, Kangxiang Ji
In this study, we examined the changes in high-sensitivity C-reactive protein (Hs-CRP) and homocysteine (HCY) levels, two of the risk factors, during the acute period of ischemic stroke (IS) and evaluated the relationship between these two factors and long-term post-stroke depression (PSD). In this study, 259 patients with IS had finished the follow-up and were included. Based on the symptoms, diagnoses of depression were made in accordance with DSM-IV criteria for depression at 1 year after stroke. The influence of Hs-CRP/CHY levels on PSD was performed by binary logistic regression analysis and receiver operating characteristic curves (ROC)...
April 29, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28449833/rational-medical-therapy-is-the-key-to-effective-cardiovascular-disease-prevention
#5
REVIEW
J David Spence
In an era in which medicine personalized on the basis of genotyping is being proposed, it is timely to recognize that existing therapies could be markedly improved if they were on the basis of more effective application of principles on the basis of available phenotyping. Blood pressure control, which is poor on a worldwide basis, is a major opportunity to reduce cardiovascular risk. There are many genetic variants that have a small effect on blood pressure, but specific therapies are not available for most of them...
May 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28442515/genetic-polymorphisms-rs699947-rs1570360-and-rs3025039-on-the-vegf-gene-are-correlated-with-extracranial-internal-carotid-artery-stenosis-and-ischemic-stroke
#6
Binod Kumar Yadav, Renu Yadav, Hyuk Chang, Kangho Choi, Joon-Tae Kim, Man Seok Park, Hyun Goo Kang, Insung Choo, Seong Hwan Ahn, Dong Seok Oh, Yeon Soo Ha, Ihngyu Kim, Man-Wook Seo, Byoung-Soo Shin
Extracranial internal carotid artery (ECICA) stenosis is a modifiable risk factor of ischemic stroke. VEGF plays a crucial role in the maintenance of endothelial integrity and physiological function. This study was designed to assess the correlations of VEGF polymorphisms with ECICA stenosis in ischemic stroke and to explore the relationships between these polymorphisms and different biochemical parameters. This study included a total of 650 ischemic stroke patients, 232 with ECICA stenosis while 418 had no ECICA stenosis as assessed by magnetic resonance angiography...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28430117/fluvastatin-therapy-could-not-decrease-progression-of-paroxysmal-atrial-fibrillation-in-non-valvular-disease-patients
#7
Qiang Tan, Shuangyue Zhang, Xiaoyi Zou, Jun Zhao, Jia Hao, Qian Sun
OBJECTIVE: This study aimed to evaluate whether fluvastatin therapy could decrease the probability of atrial fibrillation (AF) progression from paroxysmal AF to permanent AF and decrease the recurrence frequency of AF. METHODS: Analyses were performed using two-tailed Student's t test or Mann-Whitney U tests. Categorical variables were compared with the χ2 statistics or Fisher's exact test. Patients with paroxysmal AF were randomized case-control, prospective into either the fluvastatin group (n=61) or control group (n=57)...
April 10, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28429027/a-metabolomic-study-on-high-risk-stroke-patients-determines-low-levels-of-serum-lysine-metabolites-a-retrospective-cohort-study
#8
Yeseung Lee, Adnan Khan, Seri Hong, Sun Ha Jee, Youngja H Park
Identifying changes in serum metabolites during cerebral ischemia is an important approach for early diagnosis of thrombotic stroke. Herein, we highlight novel biomarkers for early diagnosis of patients at high risk of thrombotic stroke using high resolution metabolomics (HRM). In this retrospective cohort study, serum samples obtained from patients at risk of thrombotic stroke (n  =  62) and non-risk individuals (n  =  348) were tested using HRM, coupled with LC-MS/MS, to discriminate between metabolic profiles of control and stroke risk patients...
April 21, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28424785/the-impact-of-homocysteine-vitamin-b12-and-vitamin-d-levels-on-functional-outcome-after-first-ever-ischaemic-stroke
#9
Merdin Markišić, Aleksandra M Pavlović, Dragan M Pavlović
We explored the relationship between acute ischaemic stroke (IS) early functional outcome and serum levels of homocysteine, vitamin B12, and D in a noninterventional prospective clinical study. We enrolled 50 patients with first-ever IS and performed laboratory tests and functional assessment at three time points: on admission and three and six months after stroke. Modified Rankin Scale (mRS), NIHSS scale, and Barthel index (BI) scores were assessed in all participants by trained examiner blinded to laboratory data...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28414812/deficiency-of-superoxide-dismutase-promotes-cerebral-vascular-hypertrophy-and-vascular-dysfunction-in-hyperhomocysteinemia
#10
Sanjana Dayal, Gary L Baumbach, Erland Arning, Teodoro Bottiglieri, Frank M Faraci, Steven R Lentz
There is an emerging consensus that hyperhomocysteinemia is an independent risk factor for cerebral vascular disease and that homocysteine-lowering therapy protects from ischemic stroke. However, the mechanisms by which hyperhomocysteinemia produces abnormalities of cerebral vascular structure and function remain largely undefined. Our objective in this study was to define the mechanistic role of superoxide in hyperhomocysteinemia-induced cerebral vascular dysfunction and hypertrophy. Unlike previous studies, our experimental design included a genetic approach to alter superoxide levels by using superoxide dismutase 1 (SOD1)-deficient mice fed a high methionine/low folate diet to produce hyperhomocysteinemia...
2017: PloS One
https://www.readbyqxmd.com/read/28396257/b-vitamin-and-choline-supplementation-increases-neuroplasticity-and-recovery-after-stroke
#11
Nafisa M Jadavji, Joshua T Emmerson, Amanda J MacFarlane, William G Willmore, Patrice D Smith
Folates are B-vitamins that play an important role in brain function. Dietary and genetic deficiencies in folate metabolism result in elevated levels of homocysteine which have been linked to increased risk of developing a stroke. Reducing levels of homocysteine before or after a stroke through B-vitamin supplementation has been a focus of many clinical studies, however, the results remain inconsistent. Animal model systems provide a powerful mechanism to study and understand functional impact and mechanisms through which supplementation affects stroke recovery...
July 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28377713/no-association-between-elevated-total-homocysteine-levels-and-functional-outcome-in-elderly-patients-with-acute-cerebral-infarction
#12
Wanjun Wang, Chunlin Gao, Changshen Yu, Shoufeng Liu, Dongzhe Hou, Yajing Wang, Chen Wang, Lidong Mo, Jialing Wu
Background: An elevated plasma total homocysteine (tHcy) level is an independent risk factor for vascular events. The aim of the present study was to investigate the association between tHcy levels in the acute phase of cerebral infarction and functional outcome among elderly patients. Methods: Between October 2009 and December 2012, we recruited 594 elderly patients (age > 75) with first-onset acute cerebral infarction who were consecutively admitted to the Department of Neurology of Tianjin Huanhu Hospital, China...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28360116/homocysteine-and-stroke-risk-modifying-effect-of-methylenetetrahydrofolate-reductase-c677t-polymorphism-and-folic-acid-intervention
#13
Min Zhao, Xiaobin Wang, Mingli He, Xianhui Qin, Genfu Tang, Yong Huo, Jianping Li, Jia Fu, Xiao Huang, Xiaoshu Cheng, Binyan Wang, Fan Fan Hou, Ningling Sun, Yefeng Cai
BACKGROUND AND PURPOSE: Elevated blood homocysteine concentration increases the risk of stroke, especially among hypertensive individuals. Homocysteine is largely affected by the methylenetetrahydrofolate reductase C677T polymorphism and folate status. Among hypertensive patients, we aimed to test the hypothesis that the association between homocysteine and stroke can be modified by the methylenetetrahydrofolate reductase C677T polymorphism and folic acid intervention. METHODS: We analyzed the data of 20 424 hypertensive adults enrolled in the China Stroke Primary Prevention Trial...
March 30, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28356037/markers-of-early-vascular-ageing
#14
Vasilios Kotsis, Christina Antza, Ioannis Doundoulakis, Stella Stabouli
BACKGROUND: Cardiovascular damage is clinically manifested as coronary artery disease, heart failure, stroke and peripheral artery disease. The prevalence of these adverse conditions is higher with advancing age. Although many patients present cardiovascular damage late in their life, it is common to see patients with early atherosclerosis in cardiovascular intensive care units at ages lower than 50 years in men and 55 for women. METHODS AND RESULTS: In this review of the literature we identified risk factors of early vascular damage...
March 28, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28345376/lessons-from-metabonomics-on-the-neurobiology-of-stroke
#15
Mahim I Qureshi, Panagiotis A Vorkas, Alexander P Coupland, I Harri Jenkins, Elaine Holmes, Alun H Davies
The application of metabonomic science to interrogate stroke permits the study of metabolite entities, small enough to cross the blood-brain barrier, that provide insight into neuronal dysfunction, and may serve as reservoirs of biomarker discovery. This systematic review examines the applicability of metabolic profiling in ischemic stroke research. Six human studies utilizing metabolic profiling to analyze biofluids from ischemic stroke patients have been included, employing (1)H-NMR and/or mass spectrometry to analyze plasma, serum, and/or urine in a targeted or untargeted fashion...
October 1, 2016: Neuroscientist: a Review Journal Bringing Neurobiology, Neurology and Psychiatry
https://www.readbyqxmd.com/read/28317478/homocysteine-and-non-cardiac-vascular-disease
#16
Niki Katsiki, Pablo Perez-Martinez, Dimitri P Mikhailidis
Elevated homocysteine (Hcy) levels are predictors of cardiovascular disease (CVD). Hyperhomocysteinemia has also been associated with total and CVD mortality. However, whether Hcy is just a marker or plays a causal role in CVD remains to be elucidated. In this narrative review, we discuss the associations between Hcy and non-cardiac vascular diseases, namely stroke, peripheral artery disease (PAD), carotid artery disease, chronic kidney disease (CKD), atherosclerotic renal artery stenosis (ARAS), abdominal aortic aneurysm (AAA) and erectile dysfunction (ED)...
March 17, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28287278/carotid-intima-media-thickness-is-not-associated-with-homocysteine-and-vitamin-d-levels-in-obstructive-sleep-apnea
#17
Katarína Klobučníková, Pavel Šiarnik, Monika Siváková, Helena Wágnerová, Imrich Mucska, Branislav Kollár, Peter Turčáni
Obstructive sleep apnea syndrome (OSA) is associated with increased vascular morbidity. Accelerated atherosclerosis might be one of the most important mechanisms linking OSA with the development of vascular disorders. Homocysteine (HCY) and vitamin D has been associated with atherogenesis. The aim of this study was to assess a possible association between the levels of HCY and vitamin D and the carotid intima-media thickness (cIMT), which is a known marker for subclinical atherosclerosis in patients with OSA...
March 13, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28275883/elevated-plasma-homocysteine-level-increased-the-risk-of-early-renal-impairment-in-acute-ischemic-stroke-patients
#18
Jingjuan Chen, Guode Li, Zuohang Xu, Chengguo Zhang, Yukai Wang, Haiqun Xie, Yan Shao, Lingmei Peng, Jiancong Lu, Dahua Yuan
Renal insufficiency is associated with the prognosis of acute ischemic stroke (AIS) and homocysteine (Hcy) levels. This study investigated the association between plasma Hcy levels and renal insufficiency in patients with AIS. A total of 987 patients with AIS who had been treated at the First People's Hospital of Foshan between 2011 and 2014 were retrospectively studied. Based on their cystatin C (Cys C) levels, the patients were divided into the normal renal function group (Cys C ≤ 1.25 mg/L) or the renal impairment group (Cys C > 1...
March 8, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28261756/association-between-hyperhomocysteinemia-and-stroke-with-atherosclerosis-and-small-artery-occlusion-depends-on-homocysteine-metabolism-related-vitamin-levels-in-chinese-patients-with-normal-renal-function
#19
Guan-Hui Wu, Fan-Zhen Kong, Xiao-Feng Dong, De-Feng Wu, Qian-Zhu Guo, Ai-Rong Shen, Qing-Zhang Cheng, Wei-Feng Luo
This study was conducted to investigate the role of different homocysteine metabolism-related vitamin (HMRV) levels in the correlation between hyperhomocysteinemia (HHCY) and ischemic stroke (IS) subtypes. Three hundred and forty-eight IS patients manifesting different vascular subtypes were subclassified on the basis of HMRV deficiencies. Correlation between HHCY and IS subtypes was investigated in all the subgroups. In this study, HHCY was significantly correlated with the IS subtypes in large artery atherosclerosis (OR 1...
June 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28258054/thrombophilia-risk-is-not-increased-in-children-after-perinatal-stroke
#20
Colleen Curtis, Aleksandra Mineyko, Patricia Massicotte, Michael Leaker, Xiu Yan Jiang, Amalia Floer, Adam Kirton
Perinatal stroke causes cerebral palsy and lifelong disability. Specific diseases are definable but mechanisms are poorly understood. Evidence suggests possible associations between arterial perinatal stroke and prothrombotic disorders but population-based, controlled, disease-specific studies are limited. Understanding thrombophilia in perinatal stroke informs pathogenesis models and clinical management. We conducted a population-based, prospective, case-control study to determine the association of specific perinatal stroke diseases with known thrombophilias...
March 3, 2017: Blood
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