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https://www.readbyqxmd.com/read/28932497/evaluation-of-amiodarone-versus-metoprolol-in-treating-atrial-fibrillation-after-coronary-artery-bypass-grafting
#1
Alireza Kamali, Amir Sanatkar, Mehrzad Sharifi, Esmaeil Moshir
INTRODUCTION: Atrial fibrillation (AF) is the most common arrhythmia affecting patients in open heart ICU after coronary artery bypass grafting (CABG). Most cardiac surgery textbooks recommend beta blockers as the drug of choice for treating such a condition while many experienced physicians and a number of anesthesiology references offer amiodarone as the drug of choice. Therefore, because of insufficient evidence and the aforementioned controversy, we decided to conduct a study evaluating these two antiarrhythmic medicines...
June 2017: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28930747/quantification-of-bisoprolol-and-metoprolol-in-simultaneous-human-serum-and-cerebrospinal-fluid-samples
#2
Ali Sigaroudi, Martina Kinzig, Oliver Wahl, Christoph Stelzer, Michael Schroeter, Uwe Fuhr, Ulrike Holzgrabe, Fritz Sörgel
BACKGROUND: Bisoprolol and metoprolol are moderately lipophilic, beta(1)-selective betablockers reported to cause adverse effects in the central nervous system (CNS), such as sleep disturbance, suggesting that both drugs may reach relevant concentrations in the brain. CNS beta(2)-receptor blockade has been suspected to be related to such effects. The higher molecular size of bisoprolol (325 Dalton) and the higher beta(1)-selectivity compared to metoprolol (267 Dalton) would suggest a lower rate of CNS effects...
September 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28929443/short-term-fasting-alters-pharmacokinetics-of-cytochrome-p450-probe-drugs-does-protein-binding-play-a-role
#3
Laureen A Lammers, Roos Achterbergh, Johannes A Romijn, Ron A A Mathôt
BACKGROUND AND OBJECTIVES: Short-term fasting differentially alters cytochrome P450 (CYP) mediated drug metabolism. This has been established by using CYP-enzyme selective probe drugs. However, the observed effects of fasting on the pharmacokinetics of these probe drugs may also include the effects of altered plasma protein binding of these drugs. Therefore, we studied the effect of short-term fasting on protein binding of five commonly used probe drugs [caffeine (CYP1A2), metoprolol (CYP2D6), midazolam (CYP3A4), omeprazole (CYP2C19) and S-warfarin (CYP2C9)]...
September 19, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28924743/a-physiologically-based-pharmacokinetic-model-for-pregnant-women-to-predict-the-pharmacokinetics-of-drugs-metabolized-via-several-enzymatic-pathways
#4
André Dallmann, Ibrahim Ince, Katrin Coboeken, Thomas Eissing, Georg Hempel
BACKGROUND: Physiologically based pharmacokinetic modeling is considered a valuable tool for predicting pharmacokinetic changes in pregnancy to subsequently guide in-vivo pharmacokinetic trials in pregnant women. The objective of this study was to extend and verify a previously developed physiologically based pharmacokinetic model for pregnant women for the prediction of pharmacokinetics of drugs metabolized via several cytochrome P450 enzymes. METHODS: Quantitative information on gestation-specific changes in enzyme activity available in the literature was incorporated in a pregnancy physiologically based pharmacokinetic model and the pharmacokinetics of eight drugs metabolized via one or multiple cytochrome P450 enzymes was predicted...
September 18, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28920690/regional-intestinal-permeability-in-rats-a-comparison-of-methods
#5
Carl Roos, David Dahlgren, E Sjögren, Christer Tannergren, Bertil Abrahamsson, H Lennernas
Currently, the screening of new drug candidates for intestinal permeation is typically based on in vitro models which give no information regarding regional differences along the gut. When evaluation of intestinal permeability by region is undertaken, two preclinical rat models are commonly used, the Ussing chamber method and single-pass intestinal perfusion (SPIP). To investigate the robustness of in vivo predictions of human intestinal permeability, a set of four model compounds was systematically investigated in both these models, using tissue specimens and segments from the jejunum, ileum, and colon of rats from the same genetic strain...
September 18, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28917751/structural-characterization-of-electrochemically-and-in-vivo-generated-potential-metabolites-of-selected-cardiovascular-drugs-by-ec-uhplc-esi-ms-using-an-experimental-design-approach
#6
Małgorzata Szultka-Młyńska, Sylwia Bajkacz, Irena Baranowska, Bogusław Buszewski
In the last few years, a number of studies were conducted which aimed at understanding the mechanisms of cardiovascular drug, metabolism, and there is still the need to determine the metabolites of cardiac drugs for the purpose of metabolism control. In this study, we employ a direct combination of electrochemical oxidation and mass spectrometric (EC-MS) identification for monitoring the oxidation pathway of ten cardiovascular drugs (metoprolol, propranolol, propafenone, mexiletine, oxprenolol, pirbuterol, pindolol, cicloprolol, acebutolol and atenolol)...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28911302/what-is-the-real-efficacy-of-beta-blockers-for-the-treatment-of-essential-hypertension
#7
Christian Höcht, Facundo M Bertera, Julieta S Del Mauro, Yanina Santander Plantamura, Carlos A Taira, Ariel H Polizio
OBJECTIVE: This review covers the pharmacokinetics and pharmacodynamic of β-blockers, the rationale for their use, some recent controversies in its use for managing hypertension, as well as, the beneficial properties of the third-generation β-blockers beyond hypertension. BACKGROUND: The efficacy and safety of -blockers in the treatment of hypertension and other cardiovascular diseases have been established during more than 50 years of clinical experience. Recent updates of clinical guidelines have downgraded the use of -blockers for the treatment of uncomplicated hypertension to second and third line therapy...
June 7, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28894360/the-evaluation-of-%C3%AE-adrenoceptor-blocking-agents-in-patients-with-copd-and-congestive-heart-failure-a-nationwide-study
#8
Kuang-Ming Liao, Tien-Yu Lin, Yaw-Bin Huang, Chen-Chun Kuo, Chung-Yu Chen
OBJECTIVE: β-Blockers are safe and improve survival in patients with both congestive heart failure (CHF) and COPD. However, the superiority of different types of β-blockers is still unclear among patients with CHF and COPD. The association between β-blockers and CHF exacerbation as well as COPD exacerbation remains unclear. The objective of this study was to compare the outcome of different β-blockers in patients with concurrent CHF and COPD. PATIENTS AND METHODS: We used the National Health Insurance Research Database in Taiwan to conduct a retrospective cohort study...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28882337/meta-analysis-comparing-metoprolol-and-carvedilol-on-mortality-benefits-in-patients-with-acute-myocardial-infarction
#9
Jingen Li, Zhuo Chen, Xiang Gao, He Zhang, Wenjing Xiong, Jianqing Ju, Hao Xu
Although carvedilol, a nonselective beta-blocker with alpha-adrenergic blocking and multiple ancillary activities, has been demonstrated to be superior to metoprolol in chronic heart failure, it remains unclear whether the superiority of carvedilol still exists in myocardial infarction (MI). Therefore, we performed a network meta-analysis of randomized controlled trials (RCTs) to compare the 2 drugs in patients with MI. All RCTs that compared either 2 of the following interventions, carvedilol, metoprolol, and placebo, for the treatment of MI were included...
July 29, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28874950/appropriateness-of-bolus-antihypertensive-therapy-for-elevated-blood-pressure-in-the-emergency-department
#10
Joseph B Miller, Andrew Arter, Suprat S Wilson, Alexander T Janke, Aaron Brody, Brian P Reed, Phillip D Levy
INTRODUCTION: While moderate to severely elevated blood pressure (BP) is present in nearly half of all emergency department (ED) patients, the incidence of true hypertensive emergencies in ED patients is low. Administration of bolus intravenous (IV) antihypertensive treatment to lower BP in patients without a true hypertensive emergency is a wasteful practice that is discouraged by hypertension experts; however, anecdotal evidence suggests this occurs with relatively high frequency. Accordingly, we sought to assess the frequency of inappropriate IV antihypertensive treatment in ED patients with elevated BP absent a hypertensive emergency...
August 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28869814/multi-residue-determination-of-47-organic-compounds-in-water-soil-sediment-and-fish-turia-river-as-case-study
#11
Eric Carmona, Vicente Andreu, Yolanda Picó
A sensitive and reliable method based on solid-liquid extraction (SLE) using McIlvaine-Na2EDTA buffer (pH=4.5)-methanol and solid-phase extraction (SPE) clean up prior to ultra-high-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) was applied to determine 47 organic contaminants in fish, soil and sediments. The SPE procedure to clean-up the extracts was also used as extraction method to determine these compounds in water. Recoveries ranged from 38 to 104% for all matrices with RSDs<30%...
August 24, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28862932/atrial-fibrillation-in-heart-failure-us-ambulatory-cardiology-practices-and-the-potential-for-uptake-of-catheter-ablation-an-national-cardiovascular-data-registry-ncdr-%C3%A2-research-to-practice-r2p-project
#12
Jehu S Mathew, Lucas N Marzec, Kevin F Kennedy, Philip G Jones, Paul D Varosy, Frederick A Masoudi, Thomas M Maddox, Larry A Allen
BACKGROUND: Atrial fibrillation (AF) and heart failure with reduced ejection fraction frequently coexist. The AATAC (Ablation versus Amiodarone for Treatment of persistent Atrial fibrillation in patients with Congestive heart failure and an implantable device) trial suggests that catheter ablation may benefit these patients. However, applicability to contemporary ambulatory cardiology practice is unknown. METHODS AND RESULTS: Using the outpatient National Cardiovascular Data Registry(®) Practice Innovation and Clinical Excellence Registry, we identified participants meeting AATAC enrollment criteria between 2013 and 2014...
August 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28830083/metoprolol-increases-uric-acid-and-risk-of-gout-in-african-americans-with-chronic-kidney-disease-attributed-to-hypertension
#13
Stephen P Juraschek, Lawrence J Appel, Edgar R Miller
BACKGROUND: There is little evidence guiding selection of nondiuretic, antihypertensive agents with a goal of lowering uric acid (SUA) and minimizing gout risk. METHODS: In the African American Study of Kidney Disease and Hypertension (AASK) trial, African Americans with chronic kidney disease were randomly assigned to metoprolol (a beta-blocker), ramipril (an angiotensin-converting enzyme inhibitors [ACEi]), or amlodipine (a dihydropyridine calcium-channel blocker)...
September 1, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28828307/evaluation-of-efficacy-of-metoprolol-in-patients-having-heart-failure-with-preserved-ejection-fraction-a-randomized-double-blind-placebo-controlled-pilot-trial
#14
Niti Mittal, Nusrat Shafiq, Sreenivas Reddy, Samir Malhotra, Savita Kumari, Subhash Varma
BACKGROUND: There is a lack of evidence-based therapies for the treatment of heart failure (HF) with preserved ejection fraction (HFpEF). Beta blockers may provide some benefit in HFpEF due to their proven role in HF with reduced ejection fraction. AIM: The main objective of the present study was to evaluate the efficacy of controlled-release metoprolol (metoprolol succinate) in HFpEF. MATERIALS AND METHODS: This was an investigator-initiated, randomized, double-blind, placebo-controlled, 14-week pilot study with metoprolol succinate as a study drug...
July 2017: Perspectives in Clinical Research
https://www.readbyqxmd.com/read/28819568/nebivolol-attenuates-neutrophil-lymphocyte-ratio-a-marker-of-subclinical-inflammation-in-hypertensive-patients
#15
Mazhar Hussain, Muhammad Saeed, Muhammad Zafar Majeed Babar, Moazzam Ali Atif, Lubna Akhtar
BACKGROUND: High value of neutrophil lymphocyte ratio (NLR) is a strong independent predictor and biomarker of ongoing vascular inflammation in various cardiovascular disorders. OBJECTIVE: The main focus of the study is to investigate the effect of nebivolol on NLR in mild to moderate hypertensive patients in comparison with metoprolol. In addition, BMI, blood pressure, TLC count, blood sugar, and lipid profile were also assayed before and after treatment. MATERIALS AND METHODS: In this 12-week prospective double-blinded randomized study, 120 patients with mild to moderate hypertension were randomly divided into two groups to prescribed daily dose of tab nebivolol 5-10 mg and metoprolol 50-100 mg, respectively, for 12 weeks...
2017: International Journal of Hypertension
https://www.readbyqxmd.com/read/28817781/availability-and-variation-of-publicly-reported-prescription-drug-prices
#16
Jeffrey T Kullgren, Joel E Segel, Timothy A Peterson, A Mark Fendrick, Simone Singh
OBJECTIVES: To examine how often retail prices for prescription drugs are available on state public reporting websites, the variability of these reported prices, and zip code characteristics associated with greater price variation. STUDY DESIGN: Searches of state government-operated websites in Michigan, Missouri, New York, and Pennsylvania for retail prices for Advair Diskus (250/50 fluticasone propionate/salmeterol), Lyrica (pregabalin 50 mg), Nasonex (mometasone 50 mcg nasal spray), Spiriva (tiotropium 18 mcg cp-handihaler), Zetia (ezetimibe 10 mg), atorvastatin 20 mg, and metoprolol 50 mg...
July 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28795098/data-on-administration-of-cyclosporine-nicorandil-metoprolol-on-reperfusion-related-outcomes-in-st-segment-elevation-myocardial-infarction-treated-with-percutaneous-coronary-intervention
#17
Gianluca Campo, Rita Pavasini, Giampaolo Morciano, Michael A Lincoff, Michael C Gibson, Masafumi Kitakaze, Jacob Lonborg, Amrita Ahluwalia, Hideki Ishii, Michael Frenneaux, Michel Ovize, Marcello Galvani, Dan Atar, Borja Ibanez, Giampaolo Cerisano, Simone Biscaglia, Brandon J Neil, Masanori Asakura, Thomas Engstrom, Daniel A Jones, Dana Dawson, Roberto Ferrari, Paolo Pinton, Filippo Ottani
Mortality and morbidity in patients with ST elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (PCI) are still high [1]. A huge amount of the myocardial damage is related to the mitochondrial events happening during reperfusion [2]. Several drugs directly and indirectly targeting mitochondria have been administered at the time of the PCI and their effect on fatal (all-cause mortality, cardiovascular (CV) death) and non fatal (hospital readmission for heart failure (HF)) outcomes have been tested showing conflicting results [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16]...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28782316/rediscovering-chirality-role-of-s-metoprolol-in-cardiovascular-disease-management
#18
Jagdish C Mohan, Siddharth N Shah, Sunny Chinchansurkar, Arindam Dey, Rishi Jain
BACKGROUND: The process of drug discovery and development today encompass a myriad of paths for bringing a new therapeutic molecule that has minimal adverse effects and of optimal use to the patient. Chirality was proposed in the direction of providing a purer and safer form of drug [Ex- cetrizine and levocetrizine]. Decades have passed since the introduction of this concept and numerous chiral molecules are in existence in therapeutics, yet somehow this concept has been ignored. This review aims to rediscover the ignored facts about chirality, its benefits and clear some common myths considering the example of S-Metoprolol in the management of Hypertension and other cardiovascular diseases...
June 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28760606/synthesis-analytical-characterization-and-capillary-electrophoretic-use-of-the-single-isomer-heptakis-6-o-sulfobutyl-beta-cyclodextrin
#19
Milo Malanga, Ida Fejős, Erzsébet Varga, Gábor Benkovics, András Darcsi, Julianna Szemán, Szabolcs Béni
This contribution reports the synthesis, characterization and capillary electrophoretic application of heptakis-(6-O-sulfobutyl-ether)-β-cyclodextrin sodium salt, (6-(SB)7-β-CD). The compound was obtained through a five-steps synthesis and it represents the first example of single-isomer sulfobutylated cyclodextrin that carries the negatively charged functions exclusively on its primary side and it is unmodified on the lower rim. The purity of each intermediate was determined by appropriate liquid chromatographic methods, while the isomeric purity of the final product was established by an ad-hoc developed HPLC method based on a CD-Screen-IEC column...
July 21, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28760243/comparative-efficacy-of-%C3%AE-blockers-on-mortality-and-cardiovascular-outcomes-in-patients-with-hypertension-a-systematic-review-and-network-meta-analysis
#20
Yuqing Zhang, Ningling Sun, Xueli Jiang, Yang Xi
The differential efficacy of lipophilic and hydrophilic β-blockers on clinical outcomes has not been investigated. We sought to compare the effects of lipophilic and hydrophilic β-blockers on mortality and cardiovascular outcomes by conducting a comprehensive systematic review and network meta-analysis. MEDLINE/PubMed, EMBASE, and the Cochrane Database were searched for all dates to January 5, 2015, for randomized trials with comparisons between all β-blockers or between β-blockers and other antihypertensive agents...
July 2017: Journal of the American Society of Hypertension: JASH
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