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https://www.readbyqxmd.com/read/29781321/metoprolol-in-the-treatment-of-cardiovascular-disease-a-critical-reappraisal
#1
Guido Grassi
Extensive clinical experience on metoprolol has been gained in different cardiovascular conditions. In this paper, we discuss the use of metoprolol, with a focus on the extended-release formulation, in clinical practice in the light of existing evidence and current recommendations. This is a narrative review based on existing evidence and clinical experience of the Author. Evidence on the use of metoprolol in heart failure, ischemic artery disease, arterial hypertension and atrial fibrillation is well-established...
May 21, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29773827/cardiac-pacemaker-channel-hcn4-inhibition-and-atrial-arrhythmogenesis-after-releasing-cardiac-sympathetic-activation
#2
Kristine Chobanyan-Jürgens, Karsten Heusser, David Duncker, Christian Veltmann, Marcus May, Heidrun Mehling, Friedrich C Luft, Christoph Schröder, Jens Jordan, Jens Tank
Clinical trials and studies with ivabradine implicate cardiac pacemaker channels (HCN4) in the pathogenesis of atrial arrhythmias. Because acute changes in cardiac autonomic tone predispose to atrial arrhythmias, we studied humans in whom profound cardiac sympathetic activation was rapidly relieved to test influences of HCN4 inhibition with ivabradine on atrial arrhythmias. We tested 19 healthy participants with ivabradine, metoprolol, or placebo in a double blind, randomized, cross-over fashion on top of selective norepinephrine reuptake inhibition with reboxetine...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29767293/left-ventricular-ejection-fraction-and-fractional-shortening-are-useful-for-the-prediction-of-the-therapeutic-response-to-metoprolol-in-children-with-vasovagal-syncope
#3
Jingyuan Song, Hongxia Li, Yuli Wang, Ping Liu, Xueying Li, Chaoshu Tang, Hongfang Jin, Junbao Du
The objective of this manuscript was to explore if left ventricular ejection fraction (LVEF) and left ventricular fractional shortening (LVFS) could predict the efficacy of metoprolol therapy on vasovagal syncope (VVS) in children. Forty-nine children, including 30 with VVS and 19 gender- and age-matched healthy controls, were included in the study. Metoprolol was prescribed to the VVS subjects. The clinical data were obtained during follow-up at 2 and 6 months. The results showed that LVEF and LVFS of responders were significantly higher than those of non-responders both at the 2-month follow-up (LVEF: 72...
May 16, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29765168/mucosal-delivery-systems-of-antihypertensive-drugs-a-practical-approach-in-general-practice
#4
Lukasz P Bialy, Cezary Wojcik, Izabela Mlynarczuk-Bialy
Patients who are unable to receive oral medication (p.o.) are a major problem in outpatient settings, especially in home health care systems. Mucosal administration of drugs offers an alternative to the oral route, especially when the parenteral mode cannot be used. There are three main pathways of mucosal administration: sublingual/buccal, intranasal and rectal. We discuss the possibility of mucosal delivery of antihypertensive drugs. Perindopril arginine and Amlodipine besylate are registered in the EU as orodispersible tablets for oromucosal delivery, however, they are not available in all countries...
May 15, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29754666/a-genotype-directed-comparative-effectiveness-trial-of-bucindolol-and-metoprolol-succinate-for-prevention-of-symptomatic-atrial-fibrillation-atrial-flutter-in-patients-with-heart-failure-rationale-and-design-of-the-genetic-af-trial
#5
Jonathan P Piccini, Stuart J Connolly, William T Abraham, Jeff S Healey, Benjamin A Steinberg, Hussein R Al-Khalidi, Patricia Dignacco, Dirk J van Veldhuisen, William H Sauer, Michel White, Stephen B Wilton, Inder S Anand, Christopher Dufton, Debra A Marshall, Ryan G Aleong, Gordon W Davis, Richard L Clark, Laura L Emery, Michael R Bristow
BACKGROUND: Few therapies are available for the safe and effective treatment of atrial fibrillation (AF) in patients with heart failure. Bucindolol is a non-selective beta-blocker with mild vasodilator activity previously found to have accentuated antiarrhythmic effects and increased efficacy for preventing heart failure events in patients homozygous for the major allele of the ADRB1 Arg389Gly polymorphism (ADRB1 Arg389Arg genotype). The safety and efficacy of bucindolol for the prevention of AF or atrial flutter (AFL) in these patients has not been proven in randomized trials...
May 2018: American Heart Journal
https://www.readbyqxmd.com/read/29754646/effect-of-carvedilol-vs-metoprolol-succinate-on-mortality-in-heart-failure-with-reduced-ejection-fraction
#6
Tarek Ajam, Samer Ajam, Srikant Devaraj, Kahee Mohammed, Stephen Sawada, Masoor Kamalesh
BACKGROUND: Beta blocker therapy is indicated in all patients with heart failure with reduced ejection fraction (HFrEF) as per current guidelines. The relative benefit of carvedilol to metoprolol succinate remains unknown. This study aimed to compare survival benefit of carvedilol to metoprolol succinate. METHODS: The VA's databases were queried to identify 114,745 patients diagnosed with HFrEF from 2007 to 2015 who were prescribed carvedilol and metoprolol succinate...
May 2018: American Heart Journal
https://www.readbyqxmd.com/read/29752864/%C3%AE-blockers-interfere-with-cell-homing-receptors-and-regulatory-proteins-in-a-model-of-spontaneously-hypertensive-rats
#7
Bruna Eibel, Melissa Kristochek, Thiago R Peres, Lucinara D Dias, Daniela R Dartora, Karina R Casali, Renato A K Kalil, Alexandre M Lehnen, Maria Claudia Irigoyen, Melissa M Markoski
AIM: To examine the interference of β-blockers with the chemokine stromal cell-derived factor-1 (SDF-1) found in cell homing receptors, C-X-C chemokine receptor type 4 (CXCR-4) and CXCR-7 and regulatory proteins of homing pathways, we administered atenolol, carvedilol, metoprolol and propranolol for 30 days using an orogastric tube to hypertensive rats. METHOD: We collected blood samples before and after treatment and quantified the levels of SDF-1 with enzyme linked immunosorbent assay (ELISA)...
May 12, 2018: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/29747861/effects-of-carvedilol-versus-metoprolol-on-platelet-aggregation-in-patients-with-acute-coronary-syndrome-the-plate-block-study
#8
Federica Ilardi, Giuseppe Gargiulo, Gabriele Giacomo Schiattarella, Giuseppe Giugliano, Roberta Paolillo, Giovanni Menafra, Elena De Angelis, Laura Scudiero, Anna Franzone, Eugenio Stabile, Cinzia Perrino, Plinio Cirillo, Carmine Morisco, Raffaele Izzo, Valentina Trimarco, Giovanni Esposito
Platelet aggregation plays a pivotal role in acute coronary syndrome (ACS). In this setting, β-blockers (BBs) are used to counteract the effects of catecholamines on heart. Circulating catecholamines can also potentiate platelet reactivity, mainly through α2 - and β2 -adrenoceptors on human platelets' surface, thus BB may affect platelet aggregation; however, the effects of different BBs on platelet aggregation in contemporary-treated patients with ACS have been poorly investigated. One hundred patients with ACS on dual antiplatelet therapy with aspirin and ticagrelor were randomized to receive treatment with carvedilol, a nonselective BB (n = 50), or metoprolol, a selective β1 -blocker (n = 50), at maximum tolerated dose...
April 3, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29738368/anti-apoptotic-effect-of-%C3%AE-1-blockers-in-ascending-thoracic-aortic-smooth-muscle-cells-the-role-of-hsp70-expression
#9
Ioannis K Rizos, James N Tsoporis, Ioannis K Toumpoulis, Vasileios Salpeas, Shehla Izhar, Angelos G Rigopoulos, Eleftherios A Sakadakis, Thomas G Parker
Heat shock proteins (HSP) play an important role in the cellular adaptation to stress, a requisite for cell survival. The aortic wall appears to be a target for increased expression of HSP during surgical stress. We aimed to define the expression and function of aortic HSP70 in 31 patients with normal ascending thoracic aortic diameter who underwent aortic valve replacement due to aortic valve stenosis (AVS) and in 35 patients with dilated ascending thoracic aorta who underwent replacement of an ascending thoracic aortic aneurysm (ATAA)...
May 3, 2018: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29731345/metoprolol-vs-diltiazem-in-the-acute-management-of-atrial-fibrillation-in-patients-with-heart-failure-with-reduced-ejection-fraction
#10
RaeAnn Hirschy, Kimberly A Ackerbauer, Gary D Peksa, E Paul O'Donnell, Joshua M DeMott
OBJECTIVE: The objective of this study was to examine the effects of metoprolol versus diltiazem in the acute management of atrial fibrillation (AF) with rapid ventricular response (RVR) in patients with heart failure with reduced ejection fraction (HFrEF). METHODS: This retrospective cohort study of patients with HFrEF in AF with RVR receiving either intravenous push (IVP) doses of metoprolol or diltiazem was conducted between January 2012 and September 2016. The primary outcome was successful rate control within 30 min of medication administration, defined as a heart rate (HR) < 100 beats per minute or a HR reduction ≥ 20%...
April 27, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29710606/suspect-screening-and-target-quantification-of-human-pharmaceutical-residues-in-the-surface-water-of-wuhan-china-using-uhplc-q-orbitrap-hrms
#11
Muhammad Ali Asghar, Qingxin Zhu, Shutang Sun, Yue'e Peng, Qin Shuai
In this study we developed a systematic method for suspect screening and target quantification of the human pharmaceutical residues in water, via solid phase extraction (SPE) followed by liquid chromatography-high resolution mass spectrometry (LC-HRMS). We then proceeded to study the occurrences and distribution of the pharmaceuticals in the surface waters of Wuhan, China, by analyzing water samples from lakes, rivers and municipal sewage. Initially, 33 human pharmaceuticals were identified from East Lake without using purchasing standards...
April 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29699617/why-is-propranolol-better-than-metoprolol-in-acute-treatment-of-electrical-storm
#12
EDITORIAL
Peng-Sheng Chen, Anisiia Doytchinova
No abstract text is available yet for this article.
May 1, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29699616/propranolol-versus-metoprolol-for-treatment-of-electrical-storm-in-patients-with-implantable-cardioverter-defibrillator
#13
Sofia Chatzidou, Christos Kontogiannis, Diamantis I Tsilimigras, Georgios Georgiopoulos, Marinos Kosmopoulos, Elektra Papadopoulou, Georgios Vasilopoulos, Stylianos Rokas
BACKGROUND: Electrical storm (ES), characterized by unrelenting recurrences of ventricular arrhythmias, is observed in approximately 30% of patients with implantable cardioverter-defibrillators (ICDs) and is associated with high mortality rates. OBJECTIVES: Sympathetic blockade with β-blockers, usually in combination with intravenous (IV) amiodarone, have proved highly effective in the suppression of ES. In this study, we compared the efficacy of a nonselective β-blocker (propranolol) versus a β1 -selective blocker (metoprolol) in the management of ES...
May 1, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29696963/inflammatory-cytokines-in-cardiac-pacing-patients-with-atrial-fibrillation-and-asymptomatic-atrial-fibrillation
#14
Jiaxi Pan, Weiwei Wang, Xiaoxue Wu, Fanqi Kong, Jialin Pan, Jiafeng Lin, Minxue Zhang
BACKGROUND: To investigate the changes of inflammatory cytokines in cardiac pacing patients with atrial fibrillation and asymptomatic atrial fibrillation and the effects of metoprolol on them. METHODS: A total of 92 cardiac pacing patients with atrial fibrillation and asymptomatic atrial fibrillation in our hospital from April 2015 to March 2017 were selected and randomly divided into the control group and the observation group, with 46 cases in each group. Three months after pacemaker implantation, the control group was treated with aspirin, the observation group was treated with metoprolol on the basis of aspirin, and the curative effects were compared between the two groups...
April 24, 2018: Panminerva Medica
https://www.readbyqxmd.com/read/29684191/importance-of-beta-blocker-dose-in-prevention-of-ventricular-tachyarrhythmias-heart-failure-hospitalizations-and-death-in-primary-prevention-implantable-cardioverter-defibrillator-recipients-a-danish-nationwide-cohort-study
#15
A C Ruwald, G H Gislason, M Vinther, J B Johansen, J C Nielsen, B T Philbert, C Torp-Pedersen, S Riahi, C Jøns
Aims: There is a paucity of studies investigating a dose-dependent association between beta-blocker therapy and risk of outcome. In a nationwide cohort of primary prevention implantable cardioverter-defibrillator (ICD) patients, we aimed to investigate the dose-dependent association between beta-blocker therapy and risk of ventricular tachyarrhythmias (VT/VF), heart failure (HF) hospitalizations, and death. Methods and results: Information on ICD implantation, endpoints, comorbidities, beta-blocker usage, type, and dose were obtained through Danish nationwide registers...
April 19, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29679945/occurrence-elimination-enantiomeric-distribution-and-intra-day-variations-of-chiral-pharmaceuticals-in-major-wastewater-treatment-plants-in-beijing-china
#16
Lei Duan, Yizhe Zhang, Bin Wang, Shubo Deng, Jun Huang, Yujue Wang, Gang Yu
The occurrence, eliminations, enantiomeric distribution and intra-day variations of five chiral pharmaceuticals (three beta-blockers and two antidepressants) were investigated in eight major WWTPs in Beijing, China. The results revealed that metoprolol (MTP) and venlafaxine (VFX) were of the highest concentrations among the five determined pharmaceuticals with mean concentrations of 803 ng L-1 and 408 ng L-1 , respectively in influents, and 354 ng L-1 and 165 ng L-1 in effluents, respectively...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29676238/effect-of-cyp2d6-poor-metabolizer-phenotype-on-stereoselective-nebivolol-pharmacokinetics
#17
Carolina P Vieira, Daniel V Neves, Eduardo B Coelho, Vera Lucia Lanchote
BACKGROUND: Nebivolol is a drug available as a racemate of d-nebivolol (SRRR) and l-nebivolol (RSSS). In human liver microsomes CYP2D6 mainly catalyses the metabolism of l-nebivolol, while CYP2C19 catalyses the metabolism of d-nebivolol. Nebivolol stereoselective pharmacokinetics has been described only for extensive metabolizers (EM). OBJECTIVE: To describe the stereoseletive nebivolol pharmacokinetics in CYP2D6 poor metabolizers (PM) and to assess whether the phenotype has an impact on nebivolol pharmacokinetics ...
April 19, 2018: Drug Metabolism Letters
https://www.readbyqxmd.com/read/29676165/exercise-prescription-in-cardiac-patients-treated-with-metoprolol-should-the-time-of-day-for-stress-tests-and-training-coincide
#18
Klara Dadova, Krystof Slaby, Jiri Radvansky, Milos Matous, Jitka Varekova, Jiri Hodis, Michal Steffl, James J Tufano
No abstract text is available yet for this article.
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29670504/clozapine-induced-cardiovascular-side-effects-and-autonomic-dysfunction-a-systematic-review
#19
Jessica W Y Yuen, David D Kim, Ric M Procyshyn, Randall F White, William G Honer, Alasdair M Barr
Background: Clozapine is the antipsychotic of choice for treatment-resistant schizophrenia and has minimal risk for extrapyramidal symptoms. Therapeutic benefits, however, are accompanied by a myriad of cardiometabolic side-effects. The specific reasons for clozapine's high propensity to cause adverse cardiometabolic events remain unknown, but it is believed that autonomic dysfunction may play a role in many of these. Objective: This systematic review summarizes the literature on autonomic dysfunction and related cardiovascular side effects associated with clozapine treatment...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29668588/a-delayed-diagnosis-of-catecholaminergic-polymorphic-ventricular-tachycardia-with-a-mutant-of-ryr2-at-c-7580t-g-for-6-years-in-a-9-year-old-child
#20
Hongyu Duan, Yongyi Lu, Song Yan, Lina Qiao, Yimin Hua, Yifei Li, Kaiyu Zhou, Chuan Wang
RATIONALE: Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare but potentially lethal inherited arrhythmia syndrome induced by adrenergic stress. Due to the atypical clinical manifestations in early age, limited recognition and experience of pediatric cardiologists, and low awareness of the significance of genetic diagnosis in some underdeveloped areas in China, a delayed or missed diagnosis of CPVT in children is common and concerning. PATIENT CONCERNS: A 9-year and 3-month male child with recurrent exercise-induced syncope accompanied by convulsion was initially misdiagnosed as epilepsy since the first manifestation at the age of 3 years...
April 2018: Medicine (Baltimore)
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