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https://www.readbyqxmd.com/read/28340451/the-role-of-drug-drug-interactions-in-prostate-cancer-treatment-focus-on-abiraterone-acetate-prednisone-and-enzalutamide
#1
REVIEW
Marzia Del Re, Stefano Fogli, Lisa Derosa, Francesco Massari, Paul De Souza, Stefania Crucitta, Sergio Bracarda, Daniele Santini, Romano Danesi
Elderly patients with cancer may have comorbidities, each requiring additional pharmacologic treatment. Therefore, the occurrence of pharmacokinetic (PK) and pharmacodynamic (PD) interactions is very likely, and the risk of adverse reactions (ADRs), due to the narrow therapeutic window of anticancer drugs, is increased. Drug-drug interactions (DDIs) may occur in prostate cancer patients due to inhibition by abiraterone of liver cytochrome P450 (CYP)-dependent enzymes CYP2C8 and 2D6, which are involved in the metabolism of approximately 25% of all drugs, and induction by enzalutamide of CYP3A4, 2C9 and 2C19, which metabolize up to 50% of medications...
March 9, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28339191/allosteric-activation-of-cytochrome-p450-3a4-via-progesterone-bioconjugation
#2
Vanja Polic, Karine Auclair
Human cytochrome P450 3A4 (CYP3A4) is responsible for the metabolism of the majority of drugs. As such, it is implicated in many adverse drug-drug and food-drug interactions, and is of significant interest to the pharmaceutical industry. This enzyme is known to simultaneously bind multiple ligands and display atypical enzyme kinetics, suggestive of allostery and cooperativity. As well, evidence of a postulated peripheral allosteric binding site has provoked debate around its significance and location. We report the use of bioconjugation to study the significance of substrate binding at the proposed allosteric site and its effect on CYP3A4 activity...
March 24, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28337081/a-comprehensive-list-of-items-to-be-included-on-a-pediatric-drug-monograph
#3
Lauren E Kelly, Shinya Ito, David Woods, Anthony J Nunn, Carol Taketomo, Matthijs de Hoog, Martin Offringa
OBJECTIVES: Children require special considerations for drug prescribing. Drug information summarized in a formulary containing drug monographs is essential for safe and effective prescribing. Currently, little is known about the information needs of those who prescribe and administer medicines to children. Our primary objective was to identify a list of important and relevant items to be included in a pediatric drug monograph. METHODS: Following the establishment of an expert steering committee and an environmental scan of adult and pediatric formulary monograph items, 46 participants from 25 countries were invited to complete a 2-round Delphi survey...
January 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/28336922/novel-and-traditional-lipid-related-biomarkers-and-their-combinations-in-predicting-coronary-severity
#4
Sha Li, Yuan-Lin Guo, Xi Zhao, Yan Zhang, Cheng-Gang Zhu, Na-Qiong Wu, Rui-Xia Xu, Ping Qing, Ying Gao, Xiao-Lin Li, Jing Sun, Geng Liu, Qian Dong, Jian-Jun Li
We investigated simultaneously traditional and novel lipid indices, alone or in combination, in predicting coronary severity assessed by Gensini score (GS) in 1605 non-lipid-lowering-drug-treated patients undergoing coronary angiography. Firstly, levels of triglycerides (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), non high density lipoprotein cholesterol (non-HDL-C), apolipoprotein (apo) B, lipoprotein (a) [Lp(a)], proprotein convertase subtilisin/kexin type 9 (PCSK9), apoC3, small dense LDL (sdLDL) and large HDL were increased, while HDL-C and apoA1 levels were decreased as GS status (all p for trend <0...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336736/identifying-possible-reasons-why-female-street-sex-workers-have-poor-drug-treatment-outcomes-a-qualitative-study
#5
Nikki Jeal, John Macleod, Chris Salisbury, Katrina Turner
AIMS: To explore street sex workers (SSWs) views and experiences of drug treatment, in order to understand why this population tend to experience poor drug treatment outcomes. DESIGN: In-depth interviews. SETTING: Bristol, UK. PARTICIPANTS: 24 current and exited SSWs with current or previous experience of problematic use of heroin and/or crack cocaine. FINDINGS: Participants described how feeling unable to discuss their sex work in drug treatment groups undermined their engagement in the treatment process...
March 22, 2017: BMJ Open
https://www.readbyqxmd.com/read/28335893/long-term-outcomes-of-stenting-the-proximal-left-anterior-descending-artery-in%C3%A2-the-protect-trial
#6
Ariel Roguin, Edoardo Camenzind, Arthur Kerner, Rafael Beyar, Eric Boersma, Laura Mauri, Ph Gabriel Steg, William Wijns
OBJECTIVES: This study sought to compare the outcomes of patients undergoing drug-eluting stent implantation according to lesion location within or outside the proximal left anterior descending (LAD) artery. BACKGROUND: Proximal LAD artery involvement is considered uniquely in revascularization guidelines. The impact of LAD lesion location on long-term outcomes after revascularization is poorly understood in context of current percutaneous coronary intervention and medical therapy...
March 27, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28335691/cases-of-drug-induced-torsade-de-pointes-a-review-of-belgian-cases-in-the-eudravigilance-database
#7
Eline Vandael, Bert Vandenberk, Joris Vandenberghe, Rik Willems, Veerle Foulon
OBJECTIVES: Post-marketing surveillance is very important, especially for rare adverse drug reactions like QTc-prolongation and Torsade de Pointes (TdP). The objective of this study was to investigate the characteristics of Belgian cases of drug-related TdP reported in the EudraVigilance database. METHODS: The EudraVigilance database was searched for Belgian post-marketing cases of TdP reported between December 2001-April 2015. These cases were identified with MedDRA preferred terms...
March 24, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/28334070/detection-of-drug-drug-interactions-through-data-mining-studies-using-clinical-sources-scientific-literature-and-social-media
#8
Santiago Vilar, Carol Friedman, George Hripcsak
Drug-drug interactions (DDIs) constitute an important concern in drug development and postmarketing pharmacovigilance. They are considered the cause of many adverse drug effects exposing patients to higher risks and increasing public health system costs. Methods to follow-up and discover possible DDIs causing harm to the population are a primary aim of drug safety researchers. Here, we review different methodologies and recent advances using data mining to detect DDIs with impact on patients. We focus on data mining of different pharmacovigilance sources, such as the US Food and Drug Administration Adverse Event Reporting System and electronic health records from medical institutions, as well as on the diverse data mining studies that use narrative text available in the scientific biomedical literature and social media...
February 17, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28334018/development-of-an-evidence-evaluation-and-synthesis-system-for-drug-drug-interactions-and-its-application-to-a-systematic-review-of-hiv-and-malaria-co-infection
#9
Kay Seden, Sara Gibbons, Catia Marzolini, Jonathan M Schapiro, David M Burger, David J Back, Saye H Khoo
BACKGROUND: In all settings, there are challenges associated with safely treating patients with multimorbidity and polypharmacy. The need to characterise, understand and limit harms resulting from medication use is therefore increasingly important. Drug-drug interactions (DDIs) are prevalent in patients taking antiretrovirals (ARVs) and if unmanaged, may pose considerable risk to treatment outcome. One of the biggest challenges in preventing DDIs is the substantial gap between theory and clinical practice...
2017: PloS One
https://www.readbyqxmd.com/read/28334014/the-quaternary-lidocaine-derivative-qx-314-in-combination-with-bupivacaine-for-long-lasting-nerve-block-efficacy-toxicity-and-the-optimal-formulation-in-rats
#10
Qinqin Yin, Jun Li, Qingshan Zheng, Xiaolin Yang, Rong Lv, Longxiang Ma, Jin Liu, Tao Zhu, Wensheng Zhang
OBJECTIVE: The quaternary lidocaine derivative (QX-314) in combination with bupivacaine can produce long-lasting nerve blocks in vivo, indicating potential clinical application. The aim of the study was to investigate the efficacy, safety, and the optimal formulation of this combination. METHODS: QX-314 and bupivacaine at different concentration ratios were injected in the vicinity of the sciatic nerve in rats; bupivacaine and saline served as controls (n = 6~10)...
2017: PloS One
https://www.readbyqxmd.com/read/28331631/improving-medication-management-for-patients-with-multimorbidity-in-primary-care-a-qualitative-feasibility-study-of-the-my-comrade-implementation-intervention
#11
Carol Sinnott, Molly Byrne, Colin P Bradley
BACKGROUND: For the majority of patients with multimorbidity, the prescription of multiple long-term medications (polypharmacy) is indicated. However, polypharmacy poses a risk of adverse drug events, drug interactions and excessive treatment burdens. To help general practitioners (GPs) conduct more comprehensive medication reviews for patients with multimorbidity, we developed the theoretically-informed MultimorbiditY COllaborative Medication Review And DEcision Making (MY COMRADE) implementation intervention...
2017: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28330641/incidence-patterns-and-associations-between-dual-antiplatelet-therapy-cessation-and-risk%C3%A2-for-adverse-events%C3%A2-among-patients-with-and-without%C3%A2-diabetes-mellitus-receiving-drug-eluting-stents-results-from-the-paris-registry
#12
Michela Faggioni, Usman Baber, Samantha Sartori, Gennaro Giustino, David J Cohen, Timothy D Henry, Serdar Farhan, Cono Ariti, George Dangas, Michael Gibson, Daniele Giacoppo, Mitchell W Krucoff, Melissa Aquino, Jaya Chandrasekhar, David J Moliterno, Antonio Colombo, Birgit Vogel, Alaide Chieffo, Annapoorna S Kini, Bernhard Witzenbichler, Giora Weisz, Philippe Gabriel Steg, Stuart Pocock, Roxana Mehran
OBJECTIVES: The aim of this study was to examine the frequency and clinical impact of different cessation patterns of dual-antiplatelet therapy (DAPT) after percutaneous coronary intervention with drug-eluting stents among patients with and those without diabetes mellitus (DM). BACKGROUND: Early DAPT suspension after percutaneous coronary intervention increases the risk for major adverse cardiac events. However, temporal variability in risk and relation to DAPT cessation patterns among patients with DM remain unclear...
March 10, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28327932/integrated-safety-analysis-of-rolapitant-with-coadministered-drugs-from-phase-ii-iii-trials-an-assessment-of-cyp2d6-or-bcrp-inhibition-by-rolapitant
#13
S Barbour, T Smit, X Wang, D Powers, S Arora, V Kansra, M Aapro, J Herrstedt
Background: Rolapitant, a long-acting neurokinin (NK) 1 receptor antagonist (RA), has demonstrated efficacy in prevention of chemotherapy-induced nausea and vomiting in patients administered moderately or highly emetogenic chemotherapy. Unlike other NK 1 RAs, rolapitant does not inhibit or induce cytochrome P450 (CYP) 3A4, but it does inhibit CYP2D6 and breast cancer resistance protein (BCRP). To analyze potential drug-drug interactions between rolapitant and concomitant medications, this integrated safety analysis of four double-blind, randomized phase II or III studies of rolapitant examined adverse events by use versus non-use of drug substrates of CYP2D6 or BCRP...
February 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28326207/dasatinib-and-prednisolone-induction-therapy-for-a-case-of-philadelphia-chromosome-positive-acute-lymphoblastic-leukemia-with-dilated-cardiomyopathy-accompanied-by-life-threatening-ventricular-tachycardia
#14
Mitsutaka Nishimoto, Hirohisa Nakamae, Kana Matsumoto, Kunihiko Morita, Yuki Koga, Dai Momose, Masayuki Hino
A 56-year-old man being treated for dilated cardiomyopathy presented with epigastralgia. He was diagnosed with ventricular tachycardia and Philadelphia chromosome-positive acute lymphoblastic leukemia. After treating incessant ventricular tachycardia, we commenced induction therapy for leukemia with dasatinib and prednisolone to minimize toxicity towards cardiomyocytes and the cardiac conduction system. Although dasatinib was temporarily withheld because of a recurrence of ventricular tachycardia, we rechallenged dasatinib while using bisoprolol and amiodarone and achieved a complete hematological response three weeks later...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28317409/ombitasvir-and-paritaprevir-boosted-with-ritonavir-and-combined-with-dasabuvir-for-chronic-hepatitis-c
#15
Robert Flisiak, Marta Flisiak-Jackiewicz
Hepatitis C is a leading cause of cirrhosis and hepatocellular carcinoma responsible for almost 700,000 deaths worldwide annually. Until 2014, management of HCV infections was based on interferon alfa containing regimens, with efficacy of 40-70% and a high adverse event rate. Interferon-free therapeutic options improved sustained viral response (SVR) rate to >90% and safety profile to placebo-like levels. Areas covered: This article describes all-oral regimen consisting of three direct acting antivirals (DAA) - ombitasvir (OBV), paritaprevir (PTV) and dasabuvir (DSV), which in clinical practice is boosted with ritonavir (r) and sometimes with ribavirin (RBV)...
March 20, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28316654/predicting-drug-drug-interactions-through-drug-structural-similarities-and-interaction-networks-incorporating-pharmacokinetics-and-pharmacodynamics-knowledge
#16
Takako Takeda, Ming Hao, Tiejun Cheng, Stephen H Bryant, Yanli Wang
Drug-drug interactions (DDIs) may lead to adverse effects and potentially result in drug withdrawal from the market. Predicting DDIs during drug development would help reduce development costs and time by rigorous evaluation of drug candidates. The primary mechanisms of DDIs are based on pharmacokinetics (PK) and pharmacodynamics (PD). This study examines the effects of 2D structural similarities of drugs on DDI prediction through interaction networks including both PD and PK knowledge. Our assumption was that a query drug (Dq) and a drug to be examined (De) likely have DDI if the drugs in the interaction network of De are structurally similar to Dq...
2017: Journal of Cheminformatics
https://www.readbyqxmd.com/read/28314699/safety-and-tolerability-of-idelalisib-lenalidomide-and-rituximab-in-relapsed-and-refractory-lymphoma-the-alliance-for-clinical-trials-in-oncology-a051201-and-a051202-phase-1-trials
#17
Sonali M Smith, Brandelyn N Pitcher, Sin-Ho Jung, Nancy L Bartlett, Nina Wagner-Johnston, Steven I Park, Kristy L Richards, Amanda F Cashen, Anthony Jaslowski, Scott E Smith, Bruce D Cheson, Eric Hsi, John P Leonard
BACKGROUND: A new generation of biological and targeted agents might potentially replace traditional cytotoxic agents in lymphoma. Lenalidomide plus rituximab was felt to be a safe and promising backbone based on available data. Idelalisib is an oral phosphatidylinositol 3-kinase delta (PI3Kδ) inhibitor that has promising activity as a monotherapy in refractory indolent lymphomas. The primary objective of these two trials was to determine the maximum tolerated dose of lenalidomide in combination with rituximab and idelalisib in relapsed follicular and mantle cell lymphoma...
March 14, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28306222/functionalizing-nanoemulsions-with-carboxylates-impact-on-the-biodistribution-and-pharmacokinetics-in-mice
#18
Mohamed F Attia, Sidy M Dieng, Mayeul Collot, Andrey S Klymchenko, Caroline Bouillot, Christophe A Serra, Marc Schmutz, Meriem Er-Rafik, Thierry F Vandamme, Nicolas Anton
Efficiency of drug administration is related to the inhibition of adverse effects, and can be improved by drug targeting through lipid nanocarriers encapsulation. Targeting technology generally goes along with the nanocarrier functionalization that can be surface modification and/or ligand grafting. The great advantage of nanoemulsions is their loading capability and the possibilities to encapsulate several entities in a single droplet, however, the decoration of the lipid droplets with strongly anchored reactive functions is challenging...
March 17, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28304343/understanding-the-effectiveness-of-natural-compound-mixtures-in-cancer-through-their-molecular-mode-of-action
#19
REVIEW
Thazin Nwe Aung, Zhipeng Qu, R Daniel Kortschak, David L Adelson
Many approaches to cancer management are often ineffective due to adverse reactions, drug resistance, or inadequate target specificity of single anti-cancer agents. In contrast, a combinatorial approach with the application of two or more anti-cancer agents at their respective effective dosages can achieve a synergistic effect that boosts cytotoxicity to cancer cells. In cancer, aberrant apoptotic pathways allow cells that should be killed to survive with genetic abnormalities, leading to cancer progression...
March 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28303728/how-can-we-overcome-neuropsychological-adverse-effects-of-antiepileptic-drugs
#20
Juri-Alexander Witt, Christoph Helmstaedter
Antiepileptic pharmacotherapy can have a negative or positive impact on cognition and behavior. Besides individual susceptibilities (in terms of idiosyncratic reactions), the risk of adverse drug effects largely depends on treatment decisions. Therefore practical strategies to prevent neuropsychological side effects comprise (1.) selecting antiepileptic drugs (AEDs) with superior neuropsychological side effect profiles, (2.) restricting the individual drug load (target doses and number of concurrent AEDs), (3...
March 17, 2017: Expert Opinion on Pharmacotherapy
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