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https://www.readbyqxmd.com/read/28646795/offsetting-the-impact-of-smoking-and-e-cigarette-vaping-on-the-cerebrovascular-system-and-stroke-injury-is-metformin-a-viable-countermeasure
#1
Mohammad A Kaisar, Heidi Villalba, Shikha Prasad, Taylor Liles, Ali Ehsan Sifat, Ravi K Sajja, Thomas J Abbruscato, Luca Cucullo
Recently published in vitro and in vivo findings strongly suggest that BBB impairment and increased risk for stroke by tobacco smoke (TS) closely resemble that of type-2 diabetes (2DM) and develop largely in response to common key modulators such oxidative stress (OS), inflammation and alterations of the endogenous antioxidative response system (ARE) regulated by the nuclear factor erythroid 2-related factor (Nrf2). Preclinical studies have also shown that nicotine (the principal e-liquid's ingredient used in e-cigarettes) can also cause OS, exacerbation of cerebral ischemia and secondary brain injury...
June 17, 2017: Redox Biology
https://www.readbyqxmd.com/read/28646703/comparison-of-type-2-diabetes-prevalence-in-chinese-migrants-vs-caucasians-and-new-perspectives-for-screening-of-cerebrovascular-disease-in-chinese-a-proof-of-concept-study
#2
Pietro A Modesti, Sergio Castellani, Maria Calabrese, Danilo Malandrino, Dong Zhao
AIMS: Type 2 diabetes (T2DM) is a recognized risk factor for intracranial stenosis (ICS) in China where ischemic stroke is a health priority. In Europe little information is available on T2DM prevalence among Chinese minority groups and vascular screening is commonly limited to extracranial vessels. Feasibility of community-based T2DM screening, differences in T2DM prevalence between Chinese migrants and Italians, and prevalence of ICS among Chinese patients with newly diagnosed T2DM were investigated...
June 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28645805/pre-admission-cha2ds2-vasc-score-and-outcome-of-patients-with-acute-cerebrovascular-events
#3
Guy Topaz, David Pereg, Mony Shuvy, Stefan Mausbach, Itzhak Kimiagar, Gregory Telman, Yona Kitay-Cohen, Dina Vorobeichik, Nir Shlomo, David Tanne
BACKGROUND: The CHA2DS2-VASc score has been recommended for the assessment of thromboembolic risk in patients with atrial fibrillation. Data regarding the association between the pre-admission CHA2DS2-VASc score and the outcome of patients with stroke and TIA are scarce. We aimed to assess the predictive value of pre-admission CHA2DS2-VASc score for early risk stratification of patients with acute cerebrovascular event. METHODS: The study group consisted of 8309 patients (53% males, mean age of 70±13...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28645780/salvia-miltiorrhiza-bunge-danshen-extract-attenuates-permanent-cerebral-ischemia-through-inhibiting-platelet-activation-in-rats
#4
Yu-Xiang Fei, Si-Qi Wang, Li-Jian Yang, Yan-Ying Qiu, Yi-Ze Li, Wen-Yuan Liu, Tao Xi, Wei-Rong Fang, Yun-Man Li
ETHNOPHARMACOLOGICAL RELEVANCE: Danshen is a crude herbal drug isolated from dried roots of Salvia miltiorrhiza Bunge. This plant is widely used in oriental medicine for the treatment of cardiovascular and cerebrovascular diseases. The supercritical CO2 extract from Danshen (SCED) (57.85%, 5.67% and 4.55% for tanshinone IIA, tanshinone I and cryptotanshinone respectively) was studied in this article, whose potential molecular mechanism remains unclear, especially in anti-thrombosis. AIM OF THE STUDY: The present study was designed to observe the protective effect of SCED on ischemic stroke in rats and to explore the underlying anti-thrombosis mechanism...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28645744/reversible-hemispheric-hypoperfusion-in-two-cases-of-smart-syndrome
#5
Karmen Wai, Anna Balabanski, Nicholas Chia, Timothy Kleinig
Stroke-like migraine attacks after radiation therapy (SMART) syndrome manifests as prolonged episodes of cortical dysfunction, years after cranial irradiation. We present two cases demonstrating reversible hemispheric hypoperfusion. Case 1 presented with left hemispheric symptoms following previous similar episodes. CT perfusion (CTP) demonstrated reversible hemispheric hypoperfusion; subsequent investigations were consistent with SMART syndrome. Case 2 presented following the third episode of a hemispheric syndrome with near-identical CTP abnormalities...
June 20, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28644584/autumn-weather-and-winter-increase-in-cerebrovascular-disease-mortality
#6
R McDonagh, J Harbison
Mortality from cerebrovascular disease increases in winter but the cause is unclear. Ireland's oceanic climate means that it infrequently experiences extremes of weather. We examined how weather patterns relate to stroke mortality in Ireland. Seasonal data for Sunshine (% of average), Rainfall (% of average) and Temperature (degrees Celsius above average) were collected for autumn (September-November) and winter (December-February) using official Irish Meteorological Office data. National cerebrovascular mortality data was obtained from Quarterly Vital Statistics...
December 12, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/28644259/antiphospholipid-syndrome-with-a-distinctive-constellation-of-neurological-manifestations-blue-toes-red-valves-white-retinal-spots
#7
Brandon T Nokes, Oana M Dumitrascu, Fadi E Shamoun, Cumara B OʼCarroll
Antiphospholipid syndrome (APS) encompasses a hypercoagulable state with a markedly increased risk for cerebrovascular complications. In addition to the classic stroke features of APS, however, there are numerous recently described "non-criteria" neurological conditions such as headaches, seizures, and cognitive impairment. We present a case of APS with uncommon neurological manifestations.
July 2017: Neurologist
https://www.readbyqxmd.com/read/28641838/dual-antiplatelet-therapy-for-6-versus-18%C3%A2-months-after-biodegradable-polymer-drug-eluting-stent-implantation
#8
Masato Nakamura, Raisuke Iijima, Junya Ako, Toshiro Shinke, Hisayuki Okada, Yoshiaki Ito, Kenji Ando, Hitoshi Anzai, Hiroyuki Tanaka, Yasunori Ueda, Shin Takiuchi, Yasunori Nishida, Hiroshi Ohira, Katsuhiro Kawaguchi, Makoto Kadotani, Hiroyuki Niinuma, Kazuto Omiya, Takashi Morita, Kan Zen, Yoshinori Yasaka, Kenji Inoue, Sugao Ishiwata, Masahiko Ochiai, Toshimitsu Hamasaki, Hiroyoshi Yokoi
OBJECTIVES: The NIPPON (Nobori Dual Antiplatelet Therapy as Appropriate Duration) study was a multicenter randomized investigation of the noninferiority of short-term versus long-term dual antiplatelet therapy (DAPT) in patients with implantation of the Nobori drug-eluting stent (DES) (Terumo, Tokyo, Japan), which has a biodegradable abluminal coating. BACKGROUND: The optimum duration of DAPT for patients with a biodegradable polymer-coated DES is unclear. METHODS: The subjects were 3,773 patients with stable or acute coronary syndromes undergoing Nobori stent implantation...
June 26, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28639721/trpv4-channels-contribute-to-calcium-transients-in-astrocytes-and-neurons-during-peri-infarct-depolarizations-in-a-stroke-model
#9
Cordula Rakers, Matthias Schmid, Gabor C Petzold
Stroke is one of the leading causes of death and long-term disability. In the penumbra, that is, the area surrounding the infarct core, peri-infarct depolarizations (PIDs) are accompanied by strong intracellular calcium elevations in astrocytes and neurons, thereby negatively affecting infarct size and clinical outcome. The dynamics of PIDs and the cellular pathways that are involved during PID formation and progression remain incompletely understood. We have previously shown that inositol triphosphate-gated calcium release from internal stores is a major component of PID-related astroglial calcium signals, but whether external calcium influx through membrane-localized channels also contributes to PIDs has remained unclear...
June 22, 2017: Glia
https://www.readbyqxmd.com/read/28638293/septic-embolic-stroke-resulting-from-staphylococcus-lugdunensis-endocarditis
#10
Htoo Kyaw, Atif Z Shaikh, Gokul Yaratha, Misra Deepika
BACKGROUND: Staphylococcus lugdunensis, a member of the coagulase-negative staphylococci (CoNS), has been recognized as a causal organism for infective endocarditis since the 1980s. Although most CoNS have an insidious and chronic nature, they are involved in a variety of systemic infections. S lugdunensis infective endocarditis is a rare entity but is as catastrophic as Staphylococcus aureus infective endocarditis and requires aggressive antibiotic therapy and, typically, valve replacement...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28634365/different-levels-of-blood-pressure-different-benefit-from-dual-antiplatelet-therapy-in-minor-stroke-or-tia-patients
#11
Jie Xu, Yongli Tao, Hao Li, Hongqiu Gu, Xuewei Xie, Xia Meng, Yuming Xu, Yilong Wang, Yongjun Wang
The study aimed to evaluate whether the benefits of dual antiplatelet therapy would be influenced by blood pressure (BP) levels, among acute minor stroke or transient ischemic attack (TIA). In CHANCE (Clopidogrel in High-Risk Patients with Acute Nondisabling cerebrovascular Events) trail, Patients were stratified by systolic BP (SBP) and diastolic BP (DBP) level measured on admission, respectively, using the supine position BP within 24 hours after symptoms onset. The primary efficacy outcome was stroke recurrence, bleeding was the safety outcome...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629519/erythropoietin-endogenous-protection-of-ischemic-brain
#12
Robert T Mallet, Myoung-Gwi Ryou
The human brain requires uninterrupted delivery of blood-borne oxygen and nutrients to sustain its function. Focal ischemia, particularly, ischemic stroke, and global ischemia imposed by cardiac arrest disrupt the brain's fuel supply. The resultant ATP depletion initiates a complex injury cascade encompassing intracellular Ca(2+) overload, glutamate excitotoxicity, oxido-nitrosative stress, extracellular matrix degradation, and inflammation, culminating in neuronal and astroglial necrosis and apoptosis, neurocognitive deficits, and even death...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28627932/short-term-prognostic-effect-of-prior-cerebrovascular-and-peripheral-artery-disease-in-patients-with-acute-coronary-syndrome-can-we-do-better
#13
Filipa Cordeiro, Pedro S Mateus, Alberto Ferreira, Silvia Leao, Miguel Moz, J Ilidio Moreira
BACKGROUND: We sought to evaluate the impact of prior cerebrovascular and/or peripheral arterial disease (PAD) on in-hospital outcomes in patients with acute coronary syndromes. METHODS: From 1 October 2010 to 26 February 2016, 13,904 acute coronary syndrome patients were enrolled in a national multicentre registry. They were divided into four groups: prior stroke/transient ischaemic attack (stroke/TIA); prior PAD; prior stroke/TIA and PAD; none. The endpoints included in-hospital mortality and a composite endpoint of death, re-infarction and stroke during hospitalization...
June 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28625637/a-randomized-phase-2-evaluation-of-the-chk1-inhibitor-ly2603618-administered-in-combination-with-pemetrexed-and-cisplatin-in-patients-with-advanced-nonsquamous-non-small-cell-lung-cancer
#14
Thomas Wehler, Michael Thomas, Christian Schumann, Joaquim Bosch-Barrera, Nuria Viñolas Segarra, Nicolas J Dickgreber, Klaus Dalhoff, Martin Sebastian, Jesus Corral Jaime, Miriam Alonso, Scott M Hynes, Ji Lin, Karla Hurt, Aimee Bence Lin, Emiliano Calvo, Luis Paz-Ares
This phase 2 portion of a phase 1/2 study examined the efficacy and safety of LY2603618, a selective checkpoint kinase 1 inhibitor, combined with pemetrexed and cisplatin (LY+Pem+Cis) in patients with advanced nonsquamous non-small cell lung cancer (NSCLC). This multicenter, randomized, controlled, open-label study (NCT01139775) enrolled patients with stage IV nonsquamous NSCLC and an Eastern Cooperative Oncology Group performance status ≤1. Patients were randomized (2:1) to LY+Pem+Cis or pemetrexed and cisplatin (Pem+Cis)...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28619493/dynamic-4d-cta-for-neuro-vascular-pathologies-a-case-series
#15
Ahmed Alnemari, Tarek R Mansour, Mohamad Bazerbashi, Mark Buehler, Jason Schroeder, Daniel Gaudin
BACKGROUND: The aim of this article is to illustrate, summarize, and review the multifaceted application of four-dimensional computed tomography angiography (4D-CTA) in the characterization and diagnosis of various cerebrovascular and tumor-associated vascular pathologies through the presentation of clinical cases including acute/chronic stroke, arteriovenous malformations, aneurysm, moya-moya disease, and the hypervascularity associated with a tumor and its relationship to pre-operative embolization...
June 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28618874/von-willebrand-factor-multimeric-structure-and-functional-activity-in-patients-with-atrial-fibrillation-with-and-without-oral-anticoagulation
#16
Sandra Lopez-Castaneda, Ignacio Valencia-Hernández, Carlos Arean, Daniel Godínez-Hernández, Martha Eva Viveros-Sandoval
von Willebrand factor (vWF) is a multimeric glycoprotein present in blood plasma. It is synthesized in megakaryocytes and endothelial cells, secreted into circulation in the form of high-molecular-weight multimers (HMWMs), and cleaved into shorter, less active multimers by ADAMTS13. It is essential for platelet adhesion and aggregation. Previous studies have investigated the relationship between vWF levels and thromboembolic events with little regard to vWF multimeric structure. Patients with atrial fibrillation (AF) exhibit higher plasma vWF and lower ADAMTS13 levels...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28616861/medical-therapy-and-recurrent-ischemic-events-in-high-risk-patients-surviving-their-myocardial-infarction-for-at-least-12%C3%A2-months-comparison-of-patients-with-st-elevation-versus-non-st-elevation-myocardial-infarction
#17
Uwe Zeymer, Katrin Riedel, Michael Hahn
INTRODUCTION: Data about treatments and recurrent ischemic events in patients surviving their most recent myocardial infarction event-free for at least 12 months are scarce. METHODS: In a retrospective data analysis, charts of patients who had a myocardial infarction 1-3 years ago with an event-free period of at least 12 months after the index event and at least one high risk factor were centrally collected and analyzed. Here we compare patients with ST elevation myocardial infarction (STEMI) versus non-ST elevation myocardial infarction (NSTEMI)...
June 14, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/28615987/stroke-rates-before-and-after-ablation-of-atrial-fibrillation-and-in-propensity-matched-controls-in-the-uk
#18
Julian We Jarman, Tina D Hunter, Wajid Hussain, Jamie L March, Tom Wong, Vias Markides
BACKGROUND: We sought to determine whether catheter ablation of atrial fibrillation (AF) is associated with reduced occurrence of ischemic cerebrovascular events. METHODS AND RESULTS: Using routinely collected hospital data, ablation patients were matched to two control cohorts via direct and propensity score matching. A total of 4,991 ablation patients were matched 1:1 to general AF controls with no ablation, and 5,407 ablation patients were similarly matched to controls who underwent cardioversion...
2017: Pragmatic and Observational Research
https://www.readbyqxmd.com/read/28615008/isolated-transient-vertigo-posterior-circulation-ischemia-or-benign-origin
#19
Tobias F Blasberg, Lea Wolf, Christian Henke, Matthias W Lorenz
BACKGROUND: Isolated transient vertigo can be the only symptom of posterior circulation ischemia. Thus, it is important to differentiate isolated vertigo of a cerebrovascular origin from that of more benign origins, as patients with cerebral ischemia have a much higher risk for future stroke than do those with 'peripheral' vertigo. The current study aims to identify risk factors for cerebrovascular origin of isolated transient vertigo, and for future cerebrovascular events. METHODS: From the files of 339 outpatients with isolated transient vertigo we extracted history, clinical and technical findings, diagnosis, and follow-up information on subsequent stroke or transient ischemic attack (TIA)...
June 14, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28614161/multiple-cerebral-infarcts-in-a-young-patient-associated-with-marijuana-use
#20
Leila Costa Volpon, Camila Lacerda Muniz de Melo Sousa, Silvia Keiko Kavaguti Moreira, Sara Reis Teixeira, Ana Paula de Carvalho Panzeri Carlotti
: Cerebrovascular events associated with marijuana use have been reported previously. This association is plausible, but not well-established yet. A 14-year-old girl, long-term heavy cannabis user, presented with generalized tonic-clonic seizures and decreased level of consciousness a few hours after smoking cannabis. Brain magnetic resonance imaging showed multiple areas of acute, subacute and chronic ischemic lesions in the left frontal lobe, basal ganglia, and corpus callosum. History of other illicit drug use and other known causes of stroke were ruled out...
June 13, 2017: Journal of Addiction Medicine
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