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https://www.readbyqxmd.com/read/28333465/disordering-effects-of-digitonin-on-phospholipid-monolayers
#1
Marta Orczyk, Kamil Wojciechowski, Gerald Brezesinski
Digitonin, a steroidal saponin obtained from the Foxglove plant (Digitalis purpurea), displays a wide spectrum of biological properties and is often used as a model in mechanistic investigations of biological activity of saponins. In the present study, Langmuir monolayers of zwitterionic (DPPC, DMPE, POPC, POPE, DSPC, DSPE, DPPE) and ionic (DPPS, DPPG) phospholipids were employed, in order to better understand the effect of digitonin on the lipid organization. For this purpose, a combination of surface pressure relaxation, infrared reflection absorption spectroscopy (IRRAS) and fluorescence microscopy measurements, was used...
March 23, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28299402/comparative-analysis-of-three-drug-drug-interaction-screening-systems-against-probable-clinically-relevant-drug-drug-interactions-a-prospective-cohort-study
#2
Neža Muhič, Ales Mrhar, Miran Brvar
PURPOSE: Drug-drug interaction (DDI) screening systems report potential DDIs. This study aimed to find the prevalence of probable DDI-related adverse drug reactions (ADRs) and compare the clinical usefulness of different DDI screening systems to prevent or warn against these ADRs. METHODS: A prospective cohort study was conducted in patients urgently admitted to medical departments. Potential DDIs were checked using Complete Drug Interaction®, Lexicomp® Online™, and Drug Interaction Checker®...
March 15, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28242045/epidemiology-of-overdose-episodes-from-the-period-prior-to-hospitalization-for-drug-poisoning-until-discharge-in-japan-an-exploratory-descriptive-study-using-a-nationwide-claims-database
#3
Yasuyuki Okumura, Nobuo Sakata, Kunihiko Takahashi, Daisuke Nishi, Hisateru Tachimori
BACKGROUND: Little is known about the nationwide epidemiology of the annual rate, causative substance, and clinical course of overdose-related admission. We aimed to describe the epidemiology of overdose episodes from the period prior to hospitalization for drug poisoning until discharge to home. METHODS: We assessed all cases of admission due to overdose (21,663 episodes) in Japan from October 2012 through September 2013 using the National Database of Health Insurance Claims and Specific Health Checkups of Japan...
February 24, 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/28130772/digitalis-use-and-the-risk-of-breast-cancer-a-systematic-review-and-meta-analysis
#4
REVIEW
Chen Zhang, Shao-Hua Xie, Bingfei Xu, Shi Lu, Pian Liu
INTRODUCTION: Previous epidemiological studies have indicated an increased risk of breast cancer associated with digitalis medication, though results are inconsistent. We performed this systematic review of available epidemiological studies to clarify the association between digitalis use and the risk of breast cancer. METHODS: A search of studies published through May 2016 in MEDLINE and EMBASE databases was performed, supplemented by manual searches of reference lists...
January 28, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28112707/in-the-kingdom-of-tortelli-ravioli-like-pasta-plant-poisoning-is-still-a-threat-a-case-report-of-near-fatal-poisoning-from-digitalis-purpurea-accidentally-confused-with-borago-officinalis
#5
Laura Bonfanti, Giuseppe Lippi, Irene Ciullo, Fiorenza Robuschi, Rosalia Aloe, Sara Tarasconi, Riccardo Vassallo, Gianfranco Cervellin
A 58 years healthy old woman was admitted to the Emergency Department (ED) with cardiac arrest due to ventricular fibrillation (VF). Appropriate cardiopulmonary resuscitation (CPR), multiple DC shocks and oro-tracheal intubation (OTI) were effective to induce recovery of spontaneous circulation (ROSC). After ROSC was achieved, the electrocardiogram (ECG) showed an idio-ventricular rhythm with atrioventricular dissociation. A transcutaneous pacing was hence applied and the patient was administered with isoproterenol...
January 16, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28094454/boosting-the-reserves-additive-regulation-of-cardiac-repolarisation
#6
Adam P Hill
Since the first description of the mechanism of digitalis toxicity in this journal in 1978 (Kass et al. 1978), abnormal calcium handling has been established as a key player across a spectrum of ventricular arrhythmias. This article is protected by copyright. All rights reserved.
January 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/27975778/cytotoxicity-comparison-on-different-parts-of-three-digitalis-species-and-isolation-of-potential-bioactive-compounds
#7
V M Kutluay, M Inoue, U S Harput, I Saracoglu
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27908913/comfrey-herbal-remedy-causing-second-degree-heart-block-do-not-be-outfoxed-by-digitalis
#8
Mathew Kurian Vithayathil, Matthew Edwards
A previously well woman aged 63 years presents to the emergency department with vomiting, palpitations and 3 presyncopal episodes. She had no previous medical or cardiac history, with the patient stating that she tried a herbal remedy of boiled comfrey leaves for insomnia 18 hours before arrival to the department. Her ECG showed multiple abnormalities, including bradycardia, second-degree atrioventricular node block, Mobitz Type 2, a shortened QT interval, downsloping ST depression and presence of U waves...
December 1, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27878411/reckless-administration-of-qt-interval-prolonging-agents-in-elderly-patients-with-drug-induced-torsade-de-pointes
#9
Galia Jackobson, Narin Nard Carmel, Dor Lotan, Anjelika Kremer, Dan Justo
A systematic review was conducted for all published case reports on drug-induced torsade de pointes (TdP) in elderly (≥80 years) patients to study if the administration of the offending agent was reckless. Overall, 61 reports on drug-induced TdP in patients aged 80-97 years were included in the analysis. Non-modifiable risk factors for drug-induced TdP (e.g. acute coronary syndrome, female gender and congestive heart failure), modifiable risk factors (e.g. hypokalemia, severe hypomagnesemia and digitalis toxicity) and reckless administration of a QT interval-prolonging agent (e...
November 22, 2016: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/27863364/interactions-of-digitalis-and-class-iii-antiarrhythmic-drugs-amiodarone-versus-dronedarone
#10
Gerrit Frommeyer, Dirk Puckhaber, Christian Ellermann, Dirk G Dechering, Simon Kochhäuser, Patrick Leitz, Florian Reinke, Lars Eckardt
BACKGROUND: A post hoc analysis of the PALLAS trial suggested possible interactions of dronedarone and digitalis glycosides. The aim of the present study was to compare the effects dronedarone or amiodarone in combination with digitalis glycosides. METHODS AND RESULTS: Eleven female rabbits underwent chronic oral treatment with amiodarone (50mg/kg/d for 6weeks). Ten rabbits were treated with dronedarone (50mg/kg/d for 6weeks). Ten rabbits were used as controls. Hearts were isolated and Langendorff-perfused...
February 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/27837029/digitalis-like-compounds-facilitate-non-medullary-thyroid-cancer-redifferentiation-through-intracellular-ca2-fos-and-autophagy-dependent-pathways
#11
Marika H Tesselaar, Thomas Crezee, Herman G Swarts, Danny Gerrits, Otto C Boerman, Jan B Koenderink, Hendrik G Stunnenberg, Mihai G Netea, Johannes W A Smit, Romana T Netea-Maier, Theo S Plantinga
Up to 20%-30% of patients with metastatic non-medullary thyroid cancer have persistent or recurrent disease resulting from tumor dedifferentiation. Tumor redifferentiation to restore sensitivity to radioactive iodide (RAI) therapy is considered a promising strategy to overcome RAI resistance. Autophagy has emerged as an important mechanism in cancer dedifferentiation. Here, we demonstrate the therapeutic potential of autophagy activators for redifferentiation of thyroid cancer cell lines. Five autophagy-activating compounds, all known as digitalis-like compounds, restored hNIS expression and iodide uptake in thyroid cancer cell lines...
January 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/27830905/-drug-safety-associated-with-the-change-of-digitalis-drug-in-norway
#12
Christian Haga, Mimi Stokke Opdal, Silja Skogstad Tuv, Per Henrik Zahl, Hanne Stenberg-Nilsen
BACKGROUND In 2011, following a period with delivery problems, the only registered digitoxin drug in Norway was replaced with digoxin. As a result, approximately 21 000 patients had to replace digitoxin with digoxin. There are important pharmacokinetic differences between digitoxin and digoxin (the general term for both drugs is digitalis), which must be taken into account when changing therapy. The aim of this study was to investigate compliance of drug security, during the transition from digitoxin to digoxin in Norway...
November 2016: Tidsskrift for Den Norske Lægeforening: Tidsskrift for Praktisk Medicin, Ny Række
https://www.readbyqxmd.com/read/27815173/stable-gastric-pentadecapeptide-bpc-157-and-bupivacaine
#13
Gordana Zivanovic-Posilovic, Diana Balenovic, Ivan Barisic, Dean Strinic, Vasilije Stambolija, Mario Udovicic, Sandra Uzun, Domagoj Drmic, Josipa Vlainic, Martina Lovric Bencic, Aleksandra Sindic, Sven Seiwerth, Predrag Sikiric
Bupivacaine toxicity following accidental overdose still lacks therapeutic solution. However, there are major arguments for testing BPC 157 against bupivacaine toxicity in vivo in rats, in particular, and then finally, in vitro. These are: the lack of any known BPC 157 toxicity, a lifesaving effect via the mitigation of arrhythmias in rats underwent hyperkalemia or digitalis toxicity, the elimination of hyperkalemia and arrhythmias in rats underwent succinylcholine toxicity and finally, the reduction of potassium-induced depolarization in vitro (in HEK293 cells) in severe hyperkalemia...
December 15, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27780131/plant-derived-cardiac-glycosides-role-in-heart-ailments-and-cancer-management
#14
REVIEW
Seema Patel
Cardiac glycosides, the cardiotonic steroids such as digitalis have been in use as heart ailment remedy since ages. They manipulate the renin-angiotensin axis to improve cardiac output. However; their safety and efficacy have come under scrutiny in recent times, as poisoning and accidental mortalities have been observed. In order to better understand and exploit them as cardiac ionotropes, studies are being pursued using different cardiac glycosides such as digitoxin, digoxin, ouabain, oleandrin etc. Several cardiac glycosides as peruvoside have shown promise in cancer control, especially ovary cancer and leukemia...
December 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27751296/digitalis-toxicity-ecg-vignette
#15
Aniruddha Vyas, Neeta Bachani, Hrishikesh Thakur, Yash Lokhandwala
"Digitalis toxicity, often candidly indexed as poisoning, has plagued the medical profession for over 200 years. The situation qualifies as a professional disgrace on the basis of three items: the situation persists, physicians are often slow to recognize it and, over the decades, writers have been harsh in their denunciation of fellow physicians when toxicity has occurred…." These are the opening remarks of an essay published in 1983 on the 2nd centenary of William Withering's 'magic potion from foxglove's extract for dropsy...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27680753/modulation-of-the-transducer-function-of-na-k-atpase-new-mechanism-of-heart-remodeling
#16
Ekaterina V Lopatina, Anna V Kipenko, Natalia A Pasatetskaya, Valentina A Penniyaynen, Boris V Krylov
Endogenous digitalis-like factors were found in the mammalian and human blood. It was the starting point for the elucidation of the new non-pumping function of the Na(+),K(+)-ATPase. It was previously well known that Na(+),K(+)-ATPase is a pharmacological target receptor for cardiac glycosides (J.C. Skou. 1957. Biochim. Biophys. Acta, 23: 394-401). We have investigated the trophotropic effects of such agents as ouabain, epinephrine, norepinephrine, atenolol, and comenic acid using the organotypic tissue culture combined with the reconstruction of optical cross sections and confocal microscopy...
October 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27618854/effects-of-sacubitril-valsartan-in-the-paradigm-hf-trial-prospective-comparison-of-arni-with-acei-to-determine-impact-on-global-mortality-and-morbidity-in-heart-failure-according-to-background-therapy
#17
Naoki Okumura, Pardeep S Jhund, Jianjian Gong, Martin P Lefkowitz, Adel R Rizkala, Jean L Rouleau, Victor C Shi, Karl Swedberg, Michael R Zile, Scott D Solomon, Milton Packer, John J V McMurray
BACKGROUND: In the PARADIGM-HF trial (Prospective Comparison of ARNI with ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure), the angiotensin receptor neprilysin inhibitor sacubitril/valsartan was more effective than the angiotensin-converting enzyme inhibitorenalapril in patients with heart failure and reduced ejection fraction. We examined whether this benefit was consistent irrespective of background therapy. METHODS AND RESULTS: We examined the effect of study treatment in the following subgroups: diuretics (yes/no), digitalis glycoside (yes/no), mineralocorticoid receptor antagonist (yes/no),and defibrillating device (implanted defibrillating device, yes/no)...
September 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/27543702/digoxin-therapy-for-cor-pulmonale-a-systematic-review
#18
Wissam Alajaji, Atallah Baydoun, Sadeer G Al-Kindi, Leslie Henry, Mazen A Hanna, Guilherme H Oliveira
OBJECTIVE: Right heart failure is associated with increased mortality and morbidity. The optimal treatment for patients with RV failure is not established. The aim of this study is to conduct a systematic review of the literature to assess the relative benefits and harms of digoxin therapy in patients with RV failure. METHODS: We performed a literature search in MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) on Nov. 4, 2014. We did not use publication type, period or language restrictions to the search strategy...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27533758/effects-of-digitalis-on-mortality-in-a-large-cohort-of-implantable-cardioverter-defibrillator-recipients-results-of-a-long-term-follow-up-study-in-1020-patients
#19
Julia W Erath, Mate Vamos, Stefan H Hohnloser
AIMS: The effects of digitalis on mortality in patients with structural heart disease are controversially discussed. We aimed to assess the effects of digitalis administration in implantable cardioverter defibrillator (ICD) recipients. METHODS AND RESULTS: This retrospective analysis comprises 1020 consecutive patients who received an ICD at our institution and who were followed for up to 10 years (median 37 months). A total of 438 patients were receiving digitalis at the time of ICD implantation and 582 did not...
July 2016: European Heart Journal. Cardiovascular Pharmacotherapy
https://www.readbyqxmd.com/read/27492641/dose-response-characterization-of-the-association-of-serum-digoxin-concentration-with-mortality-outcomes-in-the-digitalis-investigation-group-trial
#20
Kirkwood F Adams, Javed Butler, J Herbert Patterson, Wendy Gattis Stough, Jerry L Bauman, Dirk J van Veldhuisen, Todd A Schwartz, Hani Sabbah, John I Mackowiak, Hector O Ventura, Jalal K Ghali
AIMS: Many patients with heart failure and reduced EF remain at high risk for hospitalization despite evidence-based therapy. Digoxin may decrease hospitalization; however, uncertainty persists concerning its proper administration and effect on mortality. This study investigated whether using dose response concepts to re-evaluate the relationship between serum digoxin concentration and key mortality outcomes in patients with reduced EF in the Digitalis Investigation Group trial would help clarify efficacy and safety...
August 2016: European Journal of Heart Failure
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