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https://www.readbyqxmd.com/read/28640888/mechanisms-of-acute-neurovascular-protection-with-at1-blockade-after-stroke-effect-of-prestroke-hypertension
#1
Ahmed Alhusban, Anna Kozak, Bindu Pillai, Heba Ahmed, Mohammed A Sayed, Maribeth H Johnson, Tauheed Ishrat, Adviye Ergul, Susan C Fagan
Stroke is a leading cause of adult disability worldwide. Improving stroke outcome requires an orchestrated interplay that involves up regulation of pro-survival pathways and a concomitant suppression of pro-apoptotic mediators. In this investigation, we assessed the involvement of eNOS in the AT1 blocker-mediated protective and pro-recovery effects in animals with hypertension. We also evaluated the effect of acute eNOS inhibition in hypertensive animals. To achieve these goals, spontaneously hypertensive rats (SHR) were implanted with blood pressure transmitters, and randomized to receive either an eNOS inhibitor (L-NIO) or saline one hour before cerebral ischemia induction...
2017: PloS One
https://www.readbyqxmd.com/read/28640874/risk-factors-are-different-for-deep-and-lobar-remote-hemorrhages-after-intravenous-thrombolysis
#2
Luis Prats-Sanchez, Alejandro Martínez-Domeño, Pol Camps-Renom, Raquel Delgado-Mederos, Daniel Guisado-Alonso, Rebeca Marín, Laura Dorado, Salvatore Rudilosso, Alejandra Gómez-González, Francisco Purroy, Manuel Gómez-Choco, David Cánovas, Dolores Cocho, Moises Garces, Sonia Abilleira, Joan Martí-Fàbregas
BACKGROUND AND PURPOSE: Remote parenchymal haemorrhage (rPH) after intravenous thrombolysis is defined as hemorrhages that appear in brain regions without visible ischemic damage, remote from the area of ischemia causing the initial stroke symptom. The pathophysiology of rPH is not clear and may be explained by different underlying mechanisms. We hypothesized that rPH may have different risk factors according to the bleeding location. We report the variables that we found associated with deep and lobar rPH after intravenous thrombolysis...
2017: PloS One
https://www.readbyqxmd.com/read/28634365/different-levels-of-blood-pressure-different-benefit-from-dual-antiplatelet-therapy-in-minor-stroke-or-tia-patients
#3
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/28634267/30-years-of-the-mineralocorticoid-receptor-the-role-of-the-mineralocorticoid-receptor-in-the-vasculature
#4
REVIEW
Jennifer J DuPont, Iris Z Jaffe
Since the mineralocorticoid receptor (MR) was cloned 30 years ago, it has become clear that MR is expressed in extra-renal tissues, including the cardiovascular system, where it is expressed in all cells of the vasculature. Understanding the role of MR in the vasculature has been of particular interest as clinical trials show that MR antagonism improves cardiovascular outcomes out of proportion to changes in blood pressure. The last 30 years of research have demonstrated that MR is a functional hormone-activated transcription factor in vascular smooth muscle cells and endothelial cells...
July 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28634217/incident-cardiovascular-disease-among-adults-with-blood-pressure-140-90-mm-hg
#5
Gabriel S Tajeu, John N Booth, Lisandro D Colantonio, Rebecca F Gottesman, George Howard, Daniel T Lackland, Emily O'Brien, Suzanne Oparil, Joseph E Ravenell, Monika M Safford, Samantha R Seals, Daichi Shimbo, Steven Shea, Tanya M Spruill, Rikki M Tanner, Paul Muntner
Background -Data from before the 2000s indicate the majority of incident cardiovascular disease (CVD) events occur among US adults with systolic and diastolic blood pressure (SBP/DBP)≥140/90 mmHg. Over the past several decades, BP declined and hypertension control has improved. Methods -We estimated the percentage of incident CVD events that occur at SBP/DBP<140/90 mmHg in a pooled analysis of three contemporary US cohorts: the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study, the Multi-Ethnic Study of Atherosclerosis (MESA), and the Jackson Heart Study (JHS) (n=31,856; REGARDS=21,208; MESA=6,779; JHS=3,869)...
June 20, 2017: Circulation
https://www.readbyqxmd.com/read/28633329/mid-term-blood-pressure-variability-is-associated-with-clinical-outcome-after-ischemic-stroke
#6
Yibo Wang, Jin'e Wang, Pin Meng, Na Liu, Niu Ji, Guanghui Zhang, Bingchao Xu, Xinyu Zhou, Yong'an Sun, Yingda Xu, Rutai Hui, Mingli He
BACKGROUND: The aim of this study was to investigate the relation between mid-term blood pressure (BP) variability (BPV) within 7 days of onset and the prognosis in acute stroke patients. METHODS: Total 873 acute ischemic stroke patients were included in this study. Mid-term BPV was evaluated through the calculations of coefficient of variation (CV) of the systolic BP (SBP) and diastolic BP (DBP) within 7 days of onset. Clinical outcomes were assessed using the recovery situations of neurological function at 3 months, the primary outcome (symptomatic recurrent stroke) and the secondary outcomes (recurrent stroke, all-cause mortality, and the composite of cardiovascular events) within 12 months...
June 13, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28632508/combined-dextroamphetamine-and-transcranial-direct-current-stimulation-in-poststroke-aphasia
#7
Zafer Keser, Michelle Weber Dehgan, Shaparak Shadravan, Nuray Yozbatiran, Lynn M Maher, Gerard E Francisco
There is a growing need for various effective adjunctive treatment options for speech recovery after stroke. A pharmacological agent combined with noninvasive brain stimulation has not been previously reported for poststroke aphasia recovery. In this "proof of concept" study, we aimed to test the safety of a combined intervention consisting of dextroamphetamine, transcranial direct current stimulation, and speech and language therapy in subjects with nonfluent aphasia. Ten subjects with chronic nonfluent aphasia underwent two experiments where they received dextroamphetamine or placebo along with transcranial direct current stimulation and speech and language therapy on two separate days...
June 20, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28629510/screening-strategies-for-atrial-fibrillation-a-systematic-review-and-cost-effectiveness-analysis
#8
Nicky J Welton, Alexandra McAleenan, Howard Hz Thom, Philippa Davies, Will Hollingworth, Julian Pt Higgins, George Okoli, Jonathan Ac Sterne, Gene Feder, Diane Eaton, Aroon Hingorani, Christopher Fawsitt, Trudie Lobban, Peter Bryden, Alison Richards, Reecha Sofat
BACKGROUND: Atrial fibrillation (AF) is a common cardiac arrhythmia that increases the risk of thromboembolic events. Anticoagulation therapy to prevent AF-related stroke has been shown to be cost-effective. A national screening programme for AF may prevent AF-related events, but would involve a substantial investment of NHS resources. OBJECTIVES: To conduct a systematic review of the diagnostic test accuracy (DTA) of screening tests for AF, update a systematic review of comparative studies evaluating screening strategies for AF, develop an economic model to compare the cost-effectiveness of different screening strategies and review observational studies of AF screening to provide inputs to the model...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28626427/distinctive-steady-state-heart-rate-and-blood-pressure-responses-to-passive-robotic-leg-exercise-during-head-up-tilt-a-pilot-study-in-neurological-patients
#9
Amirehsan Sarabadani Tafreshi, Robert Riener, Verena Klamroth-Marganska
Introduction: Robot-assisted tilt table therapy was proposed for early rehabilitation and mobilization of patients after diseases such as stroke. A robot-assisted tilt table with integrated passive robotic leg exercise (PE) mechanism has the potential to prevent orthostatic hypotension usually provoked by verticalization. In a previous study with rather young healthy subjects [average age: 25.1 ± 2.6 years (standard deviation)], we found that PE effect on the cardiovascular system depends on the verticalization angle of the robot-assisted tilt table...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28626088/secondary-prevention-of-cardiovascular-disease-in-patients-with-type-2-diabetes-international-insights-from-the-tecos-trial
#10
Neha J Pagidipati, Ann Marie Navar, Karen S Pieper, Jennifer B Green, M Angelyn Bethel, Paul W Armstrong, Robert G Josse, Darren K McGuire, Yuliya Lokhnygina, Jan H Cornel, Sigrun Halvorsen, Timo E Strandberg, Tuncay Delibasi, Rury R Holman, Eric D Peterson
Background -Intensive risk factor modification significantly improves outcomes for patients with diabetes and cardiovascular disease (CVD). However, the degree to which secondary prevention treatment goals are achieved in international clinical practice is unknown. Methods -Attainment of 5 secondary prevention parameters-aspirin use, lipid control (low-density lipoprotein cholesterol <70 mg/dL or statin therapy), blood pressure control (<140 mmHg systolic, <90 mmHg diastolic), angiotensin-converting enzyme inhibitor or angiotensin receptor blocker use, and non-smoking status-was evaluated among 13,616 patients from 38 countries with diabetes and known CVD at entry into TECOS...
June 16, 2017: Circulation
https://www.readbyqxmd.com/read/28624400/left-ventricular-geometry-determines-prognosis-and-reverse-j-shaped-relation-between-blood-pressure-and-mortality-in-ischemic-stroke-patients
#11
Chan Soon Park, Jun-Bean Park, Yerim Kim, Yeonyee E Yoon, Seung-Pyo Lee, Hyung-Kwan Kim, Yong-Jin Kim, Goo-Yeong Cho, Dae-Won Sohn, Seung-Hoon Lee
OBJECTIVES: This study sought to investigate the prognostic significance of left ventricular (LV) mass and geometry in ischemic stroke survivors, as well as the LV geometry-specific differences in the blood pressure-mortality relationship. BACKGROUND: LV mass and geometry are well-known prognostic factors in various populations; however, there are no data on their role in ischemic stroke patients. METHODS: We prospectively recruited 2,328 consecutive patients admitted with acute ischemic stroke to our institute between 2002 and 2010...
June 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28623943/does-metabolic-syndrome-predict-surgical-complications-a-protocol-for-a-systematic-review-and-meta-analysis
#12
Philip Norris, Nicholas Ralph, Clint Moloney
BACKGROUND: Metabolic syndrome (MetS) is defined by an accumulation of risk factors that include cardiovascular disease, diabetes, chronic high blood pressure, obesity, and hypercholesterolaemia which results in an increased risk of developing serious chronic diseases. MetS is widespread as it is estimated to affect up to 30% of the global population. For people with MetS who undergo surgery, an emerging body of literature points to significantly poorer postoperative outcomes compared with non-affected populations...
June 17, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28623937/the-association-of-lipid-metabolism-relative-gene-polymorphisms-and-ischemic-stroke-in-han-and-uighur-population-of-xinjiang
#13
Yun-Hua Yue, Ling-Yun Liu, Liang Hu, You-Mei Li, Jie-Ping Mao, Xiao-Ying Yang, Na-Mu Dila
BACKGROUND: The present study is aimed to evaluate difference of lipid metabolism related gene single nucleotide polymorphisms (SNPs) with ischemic stroke (IS) in Han and Uighur population of Xinjiang, China. METHODS: Four hundred eight patients with ischemic stroke and 347 unrelated healthy individuals of age and sex matched were genotyped for Apolipoprotein A5 (ApoA5), lipoprotein lipase (LPL), Cholesteryl ester transfer protein (CETP) and low-density lipoprotein receptor (LDL-R) genes...
June 17, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28623932/impact-of-glycemic-control-on-aortic-stiffness-left-ventricular-mass-and-diastolic-longitudinal-function-in-type-2-diabetes-mellitus
#14
Michaela Kozakova, Carmela Morizzo, Alan G Fraser, Carlo Palombo
BACKGROUND: Poor glycemic control is associated with impaired left ventricular (LV) diastolic function in patients with type 2 diabetes mellitus (T2DM). Inappropriate LV mass increase and accelerated aortic stiffening were suggested to participate on deterioration of diastolic function. The present study investigated the inter-relationships between glycemic control, early diastolic and systolic longitudinal velocity of mitral annulus, LV mass and aortic stiffness in T2DM patients free of cardiovascular disease and with preserved LV ejection fraction, and compared them with those observed in healthy volunteers of similar age and sex distribution...
June 17, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28619766/diagnostic-performance-of-an-automatic-blood-pressure-measurement-device-microlife-watchbp-home-a-for-atrial-fibrillation-screening-in-a-real-world-primary-care-setting
#15
Pak-Hei Chan, Chun-Ka Wong, Louise Pun, Yu-Fai Wong, Michelle Man-Ying Wong, Daniel Wai-Sing Chu, Chung-Wah Siu
OBJECTIVE: To evaluate the diagnostic performance of a UK National Institute for Health and Care Excellence-recommended automatic oscillometric blood pressure (BP) measurement device incorporated with an atrial fibrillation (AF) detection algorithm (Microlife WatchBP Home A) for real-world AF screening in a primary healthcare setting. SETTING: Primary healthcare setting in Hong Kong. INTERVENTIONS: This was a prospective AF screening study carried out between 1 September 2014 and 14 January 2015...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28618007/an-exploratory-study-in-healthy-male-subjects-of-the-mechanism-of-mirabegron-induced-cardiovascular-effects
#16
Marcel van Gelderen, Matthias Stölzel, John Meijer, Virginie Kerbusch, Christiane Collins, Cees Korstanje
To explore the role of β1 -adrenoceptors (ARs) in the heart rate response to the selective β3 -adrenoceptor agonist mirabegron, 12 young male volunteers received single oral doses of the nonselective β1/2 -AR antagonist propranolol (160 mg), the selective β1 -AR antagonist bisoprolol (10 mg), or placebo on days 1 and 5 of each period in a 3-period crossover study. On day 5, dosing was followed by a supratherapeutic dose of mirabegron (200 mg). Vital signs, impedance cardiography, and plasma renin activity were collected...
June 15, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28617154/two-kidney-one-clip-is-a-pertinent-approach-to-integrate-arterial-hypertension-in-animal-models-of-stroke-serial-magnetic-resonance-imaging-studies-of-brain-lesions-before-and-during-cerebral-ischemia
#17
Benjamin Ménard, Laurent Chazalviel, Simon Roussel, Myriam Bernaudin, Omar Touzani
Although chronic arterial hypertension (CAH) represents the major comorbid factor in stroke, it is rarely integrated in preclinical studies of stroke. The majority of those investigations employ spontaneously hypertensive rats (SHR) which display a susceptibility to ischemic damage independent of hypertension. Here, we used a renovascular model of hypertension (RH) to examine, with magnetic resonance imaging (MRI), brain alterations during the development of hypertension and after brain ischemia. We also examined whether MRI-derived parameters predict the extent of ischemia-induced brain damage...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28616545/assessment-of-various-parameters-using-simple-non-invasive-tests-in-patients-with-cardiovascular-diseases-with-or-without-cardiac-rehabilitation
#18
Takashi Ueda, Shin-Ichiro Miura, Kanta Fujimi, Toshihisa Ishida, Takuro Matsuda, Masaomi Fujita, Yoshiyuki Ura, Kouji Kaino, Maya Sakamoto, Tomoe Horita, Tadaaki Arimura, Yuhei Shiga, Takashi Kuwano, Ken Kitajima, Keijiro Saku
Cardiac rehabilitation (CR) improves cardiac function and exercise capacity in patients with cardiovascular disease (CVD). Simpler techniques are needed for use by physicians in the examination room to assess the usefulness of CR. We enrolled 46 consecutive CVD patients in a CR program (CR group) and prospectively followed them for 3 months. We compared them to 18 age-, gender- and body mass index-matched CVD patients without CR (non-CR group). Various parameters were measured at baseline and after 3 months using 3 simple non-invasive tests: severity of atherosclerosis [arterial velocity pulse index and arterial pressure volume index (API)] were determined using PASESA®, an autonomic nerve total activity amount index and a coefficient of variation of the R-R interval (CVRR) were determined using eHEART®, and peripheral resistance index, pressure rate product, stroke volume and cardiac index were determined using nico®]...
September 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28614793/a-single-dose-of-cannabidiol-reduces-blood-pressure-in-healthy-volunteers-in-a-randomized-crossover-study
#19
Khalid A Jadoon, Garry D Tan, Saoirse E O'Sullivan
BACKGROUND: Cannabidiol (CBD) is a nonpsychoactive phytocannabinoid used in multiple sclerosis and intractable epilepsies. Preclinical studies show CBD has numerous cardiovascular benefits, including a reduced blood pressure (BP) response to stress. The aim of this study was to investigate if CBD reduces BP in humans. METHODS: Nine healthy male volunteers were given 600 mg of CBD or placebo in a randomized, placebo-controlled, double-blind, crossover study. Cardiovascular parameters were monitored using a finometer and laser Doppler...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28614129/perioperative-low-arterial-oxygenation-is-associated-with-increased-stroke-risk-in-cardiac-surgery
#20
Alexandra M Dunham, Maura A Grega, Charles H Brown, Guy M McKhann, William A Baumgartner, Rebecca F Gottesman
BACKGROUND: Both patient characteristics and intraoperative factors have been associated with a higher risk of stroke after cardiac surgery. We hypothesized that poor systemic oxygenation in the perioperative period is associated with increased risk of stroke following cardiopulmonary bypass. METHODS: In this study of 251 adult patients who underwent cardiopulmonary bypass procedures at a single center from 2003 to 2006, cases (patients with a postoperative stroke at least 24 hours after surgery) were matched 1:2 to controls without stroke...
July 2017: Anesthesia and Analgesia
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