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https://www.readbyqxmd.com/read/29232194/persistent-ventricular-bigeminy-during-anesthesia-in-pediatric-patients-a-case-report-of-an-11-year-old-child
#1
Sheetal Dalal, Vikas Chaudhari
An 11-year-old male child with fractures in both bones in his left forearm presented for open reduction and internal fixation. The pre-anesthetic check-up and investigations did not reveal any pre-existing underlying cardio-respiratory disease. The patient had an uneventful peri-operative period during the operation and was comfortable without any anxiety or restlessness. After an uneventful induction and intubation as per routine protocol, the patient received 600 mg of amoxicillin+clavunate intravenously as an antibiotic...
December 12, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29218065/acute-myocardial-injury-in-a-child-with-duchenne-muscular-dystrophy-pulse-steroid-therapy
#2
Eliza Cinteza, Claudiu Stoicescu, Niculina Butoianu, Mihaela Balgradean, Alin Nicolescu, Matthias Angrés
Heart implication in Duchenne muscular dystrophy usually is present in the form of dilated cardiomyopathy, manifested as heart failure and arrhythmias. To delay progression, including heart deterioration, prednisone is recommended as preventive treatment. We report the case of an 11-year-old boy diagnosed with Duchenne muscular dystrophy at the age of seven, who was on preventive treatment with oral prednisone (0.75 mg/kg/day) and beta blocker (metoprolol, 1 mg/kg/day). Suddenly, the patient presented acute chest pain, vomiting and sweating...
September 2017: Mædica
https://www.readbyqxmd.com/read/29209976/do-cemeteries-emit-drugs-a-case-study-from-southern-germany
#3
Sabine Fiedler, Torsten Dame, Matthias Graw
The risk of earth burials for the environment and public health is a matter of controversial debate. The aim of the present study is to characterise the drainage of cemeteries with regard to the concentration of a number of pharmaceuticals and to the soil's hydrochemical properties, and to discuss these data in comparison with data obtained for surface waters located upstream of the cemeteries. Of the 12 drainage samples analysed using LC-ESI-MS/MS, seven contained carbamazepine (< 225 ng l-1), five contained hydrochlorothiazide, one contained metoprolol (23 ng l-1) and one contained traces of ibuprofen...
December 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29193283/diastolic-dysfunction-in-pulmonary-artery-hypertension-creatine-kinase-and-the-potential-therapeutic-benefit-of-beta-blockers
#4
Ewan D Fowler, Mark J Drinkhill, Rachel Stones, Ed White
Passive properties of the myocardium influence diastolic filling and cardiac output. In heart failure, changes in contributors to the passive properties of the ventricle, such as titin and collagen, and loss of the metabolic enzyme creatine kinase, increase resistance to filling resulting in diastolic dysfunction. Pulmonary artery hypertension (PAH) arises from interactions between the pulmonary vasculature and the right ventricle (RV) which ultimately leads to RV failure. Beta1-adrenergic receptor blockers (BB) act on the myocardium and are beneficial in left heart failure but are not used in PAH...
November 28, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29193123/physiologically-based-pharmacokinetic-modeling-to-evaluate-the-systemic-exposure-of-gefitinib-in-cyp2d6-ultrarapid-metabolizers-and-extensive-metabolizers
#5
Yingxue Chen, Diansong Zhou, Weifeng Tang, Wangda Zhou, Nidal Al-Huniti, Eric Masson
Gefitinib is a selective inhibitor of epidermal growth factor receptor (EGFR) tyrosine kinase and is used for the treatment of non-small-cell lung cancer (NSCLC) with activating EGFR mutations. Gefitinib is metabolized by CYP2D6 and CYP3A4. This analysis compared the systemic exposure of gefitinib after oral administration in CYP2D6 ultrarapid metabolizers (UM) vs extensive metabolizers (EM). Physiologically based pharmacokinetic (PBPK) modeling was conducted using a population-based simulator. The model was calibrated using itraconazole-gefitinib clinical drug-drug interaction data and validated with gefitinib data in CYP2D6 EM vs poor metabolizers (PM)...
November 28, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29172846/use-of-beta-blockers-is-associated-with-hearing-loss
#6
Bandar Saeed Al-Ghamdi, Dileep Kumar Rohra, Gheid Ali Ibrahim Abuharb, Hala Abdulrahman Alkofide, Nadiah Salem AlRuwaili, Mohamed M Shoukri, Peter M B Cahusac
OBJECTIVE: This study was conducted to investigate the hypothesis that patients using β-blockers will develop hearing loss. DESIGN: A cross-sectional study. STUDY SAMPLE: A total of 125 patients completed the study. A total of 63 patients were on β-blockers and 62 were not on β-blockers. RESULTS: Carvedilol was significantly associated with hearing loss. Other beta-blockers including metoprolol and atenolol showed no association with hearing loss...
November 24, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/29162627/a-therapeutic-combination-of-gpcr-modulators-that-protects-photoreceptors-from-degeneration
#7
Tivadar Orban, Henri Leinonen, Tamar Getter, Zhiqian Dong, Wenyu Sun, Songqi Gao, Alexander Veenstra, Hossein Heidari-Torkabadi, Timothy S Kern, Philip D Kiser, Krzysztof Palczewski
Degeneration of retinal photoreceptor cells can arise from environmental and/or genetic causes. Since photoreceptor cells, the retinal pigment epithelium (RPE), neurons and glial cells of the retina are intimately associated; all cell types eventually are affected by retinal degenerative diseases. Such diseases often originate either in rod and/or cone photoreceptor cells or the RPE. Of these, cone cells located in the central retina are especially important for daily human activity. Here we describe the protection of cone cells by a combination therapy consisting of the G protein-coupled receptor modulators metoprolol, tamsulosin, and bromocriptine...
November 21, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29159953/relationship-between-heart-failure-concurrent-chronic-obstructive-pulmonary-disease-and-beta-blocker-use-a-danish-nationwide-cohort-study
#8
Maurizio Sessa, Annamaria Mascolo, Rikke Nørmark Mortensen, Mikkel Porsborg Andersen, Giuseppe Massimo Claudio Rosano, Annalisa Capuano, Francesco Rossi, Gunnar Gislason, Henrik Enghusen-Poulsen, Christian Torp-Pedersen
AIMS: To compare the hazard of all-cause, chronic obstructive pulmonary disease (COPD) and heart failure (HF) hospitalization in carvedilol vs. metoprolol/bisoprolol/nebivolol users with COPD and concurrent HF from 2009 to 2012, and to evaluate the use and persistence in treatment of these β-blockers, their impact on the risk of COPD-related hospitalization, and the factors important for their selection. METHODS AND RESULTS: Cox and logistic regression were used for both unadjusted and adjusted analyses...
November 20, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29156621/influence-of-shenxiong-glucose-injection-on-the-activities-of-six-cyp-isozymes-and-metabolism-of-warfarin-in-rats-assessed-using-probe-cocktail-and-pharmacokinetic-approaches
#9
Jia Sun, Yuan Lu, Yueting Li, Jie Pan, Chunhua Liu, Zipeng Gong, Jing Huang, Jiang Zheng, Lin Zheng, Yongjun Li, Ting Liu, Yonglin Wang
Shenxiong glucose injection (SGI), a traditional Chinese medicine (TCM) preparation, has been widely used for the treatment of various cardiovascular and cerebrovascular diseases for many years. We assessed the potential influences of SGI on the activities of six CYP enzymes (CYP1A2, CYP2C11, CYP2C19, CYP2D4, CYP2E1, and CYP3A2) and on the pharmacokinetics of warfarin in rats. We compared plasma pharmacokinetics of six probe drugs (caffeine/CYP1A2, tolbutamide/CYP2C11, omeprazole/CYP2C19, metoprolol/CYP2D4, chlorzoxazone/CYP2E1, and midazolam/CYP3A2) and of warfarin between control and SGI-pretreated groups, to estimate the effect on the relative activities of the six isozymes and warfarin metabolism...
November 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29155386/one-year-clinical-outcome-of-early-administration-of-intravenous-beta-blockers-in-patients-with-st-segment-elevation-myocardial-infarction-before-primary-percutaneous-coronary-reperfusion-one-year-results-from-the-early-bami-trial
#10
Vincent Roolvink, Jan Paul Ottervanger, Borja Ibáñez, Jan Henk Dambrink, Marcel Gosselink, Elvin Kedhi, Niels van Royen, Erik Lipsic, Wouter Remkes, Jan Piek, Valentin Fuster, Arnoud van 't Hof
AIMS: The EARLY-BAMI (Early intravenous beta-blockers in patients with ST-segment elevation myocardial infarction before PPCI) trial included 684 STEMI patients to iv metoprolol (2 x 5 mg bolus) or matched placebo before PPCI. One year clinical outcome was defined by major cardiac adverse event (MACE) rate, defined as cardiac death, nonfatal reinfarction, or target vessel revascularization. METHODS AND RESULTS: One year follow up was obtained in 629 patients (92%)...
November 21, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29150808/monitoring-enzymatic-degradation-of-emerging-contaminants-using-a-chip-based-robotic-nano-esi-ms-tool
#11
Lara F Stadlmair, Thomas Letzel, Johanna Graßmann
Up to now, knowledge of enzymes capable of degrading various contaminants of emerging concern (CEC) is limited, which is especially due to the lack of rapid screening methods. Thus, a miniaturized high-throughput setup using a chip-based robotic nanoelectrospray ionization system coupled to mass spectrometry has been developed to rapidly screen enzymatic reactions with environmentally relevant CECs. Three laccases, two tyrosinases, and two peroxidases were studied for their ability to transform ten pharmaceuticals and benzotriazole...
November 17, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29123442/functional-effects-of-alagebrium-alt-711-isolated-rat-carotid-artery
#12
Cigdem Toprak, Basar Sirmagul, Semra Yigitaslan
Objective: In our study, the effects of glycosylated protein cross-link breaker, alagebrium was investigated on isolated rat carotid artery using myography. Alagebrium showed vasodilator effect on carotid artery rings; particularly, this effect was significantly increased in endothelium-intact rings. Materials and Methods: To clarify the vasodilator mechanism of alagebrium, different antagonists such as N(G)-Nitro-L-arginine methyl ester (L-NAME), glibenclamide, indomethacin, metoprolol, propranolol, tetraethylammonium, and calcium channel activator BAYK-8644 were used to reverse this effect...
October 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/29122812/nebivolol-but-not-metoprolol-treatment-improves-endothelial-fibrinolytic-capacity-in-adults-with-elevated-blood-pressure
#13
Brian L Stauffer, Caitlin A Dow, Kyle J Diehl, Tyler D Bammert, Jared J Greiner, Christopher A DeSouza
BACKGROUND: Vascular endothelial fibrinolytic function is impaired in adults with prehypertension and hypertension and plays a mechanistic role in the development of atherothrombotic events. The influence of β-blockers on endothelial fibrinolysis is unknown. This study compared the effects of chronic nebivolol and metoprolol treatment on endothelial tissue-type plasminogen activator (t-PA) release in adults with elevated blood pressure (BP). METHODS AND RESULTS: Forty-four middle-aged adults (36% women) with elevated BP completed a 3-month, double-blind, randomized, placebo-controlled trial comparing nebivolol (5 mg/d), metoprolol succinate (100 mg/d), and placebo...
November 9, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29119275/comparison-of-effects-of-losartan-and-metoprolol-on-left-ventricular-and-aortic-function-at-rest-and-during-exercise-in-chronic-aortic-regurgitation
#14
Paul A Roberts, Aaron C W Lin, Brett R Cowan, Alistair A Young, Ralph Stewart
Aortic regurgitation (AR) increases the hemodynamic load on both the left ventricle (LV) and the aorta. Vasodilators and beta-blockers both reduce systemic blood pressure, but their relative effects on the LV and aortic function and aortic regurgitant fraction in chronic AR are uncertain. We aimed to compare short-term effects of losartan and metoprolol on LV and aortic function in asymptomatic patients with chronic moderate to severe AR, both at rest and during exercise, using cardiac magnetic resonance (CMR) imaging...
November 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29118031/neurohormonal-blockade-and-circulating-cardiovascular-biomarkers-during-anthracycline-therapy-in-breast-cancer-patients-results-from-the-prada-prevention-of-cardiac-dysfunction-during-adjuvant-breast-cancer-therapy-study
#15
Geeta Gulati, Siri L Heck, Helge Røsjø, Anne H Ree, Pavel Hoffmann, Tor-Arne Hagve, Jon Norseth, Berit Gravdehaug, Kjetil Steine, Jürgen Geisler, Torbjørn Omland
BACKGROUND: Anthracyclines are associated with cardiotoxic effects. Cardiovascular biomarkers may reflect myocardial injury, dysfunction, inflammation, and fibrosis and may precede and predict the development of left ventricular impairment. The aim of this study was to assess: (1) longitudinal change in circulating cardiovascular biomarkers, (2) the effect of metoprolol succinate and candesartan cilexetil on the biomarker response, and (3) the associations between on-treatment changes in biomarker concentrations and subsequent left ventricular dysfunction in patients with early breast cancer receiving anthracyclines...
November 8, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29116618/treatment-of-stable-angina-with-a-new-fixed-dose-combination-of-ivabradine-and-metoprolol-effectiveness-and-tolerability-in-routine-clinical-practice
#16
Dimitar Divchev, Georg Stöckl
INTRODUCTION: In this prospective, multicenter, observational cohort study, the effectiveness and tolerability of the first fixed-dose combination (FDC) formulation of the selective heart rate reducing agent ivabradine and the beta-blocker metoprolol was evaluated in stable angina pectoris (AP) patients in a clinical practice setting. METHODS: Stable AP outpatients received a FDC of ivabradine and metoprolol (b.i.d.) for 4 months, in addition to cardiovascular standard therapy...
December 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/29115741/high-throughput-lc-ms-ms-method-with-96-well-plate-precipitation-for-the-determination-of-arotinolol-and-amlodipine-in-a-small-volume-of-rat-plasma-application-to-a-pharmacokinetic-interaction-study
#17
Zheyuan Qian, Jian Le, Xiujuan Chen, Shengni Li, Hongjie Song, Zhanying Hong
A rapid, sensitive and selective liquid chromatography with tandem mass spectrometry method was developed and fully validated for the simultaneous quantification of arotinolol and amlodipine in rat plasma. Two internal standards were introduced with metoprolol as the internal standard of arotinolol and (S)-amlodipine-d4 as the internal standard of amlodipine. The analytes were isolated from 50.0 μL plasma samples by a simple protein precipitation using acetonitrile. The chromatographic separation was achieved in 5 min on a C18 column...
November 8, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/29109639/evaluation-of-the-efficacy-of-desflurane-with-or-without-labetalol-for-hypotensive-anesthesia-in-middle-ear-microsurgery
#18
Neha Gupta, Vandana Talwar, Smita Prakash, Achyut Deuri, Anoop Raj Gogia
Background and Aims: Hypotensive anesthesia technique is used to reduce intraoperative bleeding and to improve the visibility of the operative field. The aim was to evaluate the efficacy of desflurane with and without labetalol for producing hypotensive anesthesia. Material and Methods: Sixty adult patients undergoing elective middle ear surgery were administered general anesthesia and randomly divided into two groups - Group D and Group L. The target mean arterial pressure (MAP) was 55-65 mmHg during hypotensive period...
July 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29107793/sustained-%C3%AE-ar-stimulation-induces-synthesis-and-secretion-of-growth-factors-in-cardiac-myocytes-that-affect-on-cardiac-fibroblast-activation
#19
Narawat Nuamnaichati, Vilasinee Hirunpanich Sato, Primchanien Moongkarndi, Warisara Parichatikanond, Supachoke Mangmool
Paracrine factors, including growth factors and cytokines, released from cardiac myocytes following β-adrenergic receptor (β-AR) stimulation regulate cardiac fibroblasts. Activated cardiac fibroblasts have the ability to increase collagen synthesis, cell proliferation and myofibroblast differentiation, leading to cardiac fibrosis. However, it is unknown which β-AR subtypes and signaling pathways mediate the upregulation of paracrine factors in cardiac myocytes. In this study, we demonstrated that sustained stimulation of β-ARs significantly induced synthesis and secretion of growth factors, including connective tissue growth factor (CTGF) and vascular endothelial growth factor (VEGF), via the cAMP-dependent and protein kinase A (PKA)-dependent pathways...
October 28, 2017: Life Sciences
https://www.readbyqxmd.com/read/29106497/effect-of-candesartan-and-metoprolol-on-myocardial-tissue-composition-during-anthracycline-treatment-the-prada-trial
#20
Siri Lagethon Heck, Geeta Gulati, Pavel Hoffmann, Florian von Knobelsdorff-Brenkenhoff, Tryggve Holck Storås, Anne Hansen Ree, Berit Gravdehaug, Helge Røsjø, Kjetil Steine, Jürgen Geisler, Jeanette Schulz-Menger, Torbjørn Omland
Aims: Anthracycline treatment may cause myocyte loss and expansion of the myocardial extracellular volume (ECV) fraction by oedema and fibrosis. We tested the hypotheses that adjuvant treatment for early breast cancer with the anthracycline epirubicin is dose dependently associated with increased ECV fraction and total ECV, as well as reduced total myocardial cellular volume, and that these changes could be prevented by concomitant angiotensin or beta-adrenergic blockade. Methods and results: PRevention of cArdiac Dysfunction during Adjuvant breast cancer therapy (PRADA) was a 2 × 2 factorial, placebo-controlled, double-blinded trial of candesartan and metoprolol...
June 29, 2017: European Heart Journal Cardiovascular Imaging
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