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https://www.readbyqxmd.com/read/29331439/interactions-of-dimethylaminoethyl-methacrylate-copolymer-with-non-acidic-drugs-demonstrated-high-solubilization-in-vitro-and-pronounced-sustained-release-in-vivo
#1
Wiebke Saal, Nicole Wyttenbach, Jochem Alsenz, Martin Kuentz
Recent work demonstrated remarkable solubilization effects of methacrylate-copolymer Eudragit EPO (EPO) not only with acidic drugs but interestingly also with poorly soluble basic compounds. The current work studied EPO-mediated solubilization effects first in vitro using felodipine (FLP) and tamoxifen (TMX) as model compounds. EPO-containing solutions were subsequently compared in a rat pharmacokinetic study against reference solutions and suspensions. Surprisingly, solution formulations with EPO did not result in an increased relative oral bioavailability...
January 10, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29330773/mechanistic-regulation-of-epithelial-to-mesenchymal-transition-through-ras-signaling-pathway-and-therapeutic-implications-in-human-cancer
#2
REVIEW
Kiran Tripathi, Minal Garg
RAS effector signaling instead of being simple, unidirectional and linear cascade, is actually recognized as highly complex and dynamic signaling network. RAF-MEK-ERK cascade, being at the center of complex signaling network, links to multiple scaffold proteins through feed forward and feedback mechanisms and dynamically regulate tumor initiation and progression. Three isoforms of Ras harbor mutations in a cell and tissue specific manner. Besides mutations, their epigenetic silencing also attributes them to exhibit oncogenic activities...
January 12, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29327219/pharmacological-insights-into-the-use-of-apomorphine-in-parkinson-s-disease-clinical-relevance
#3
REVIEW
Manon Auffret, Sophie Drapier, Marc Vérin
The present paper consists of a comprehensive review of the literature on apomorphine pharmacological properties and its usefulness in Parkinson's disease (PD). The chemistry, structure-activity relationship, pharmacokinetics and pharmacodynamics of apomorphine are described with regard to its effects on PD symptoms, drug interactions, interindividual variability and adverse events. Apomorphine chemical structure accounts for most of its beneficial and deleterious properties, both dopaminergic and non-dopaminergic...
January 11, 2018: Clinical Drug Investigation
https://www.readbyqxmd.com/read/29327061/egfr-tki-associated-interstitial-pneumonitis-in-nivolumab-treated-patients-with-non-small-cell-lung-cancer
#4
Yasuo Oshima, Tetsuya Tanimoto, Koichiro Yuji, Arinobu Tojo
Importance: Nivolumab and epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) are now the standard-of-care therapies in non-small cell lung cancer (NSCLC). Although EGFR-TKIs are well understood and have well-defined safety profiles, our experience with immune checkpoint inhibitors is still growing, particularly regarding the use of combinations of different classes of antitumor agents, including both the concomitant and sequential use of such agents. Objective: To determine whether nivolumab increases EGFR-TKI-associated interstitial pneumonitis (IP)...
January 11, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29325476/twelve-weeks-of-ombitasvir-paritaprevir-r-and-dasabuvir-without-ribavirin-is-effective-and-safe-in-the-treatment-of-patients-with-hcv-genotype-1b-infection-and-compensated-cirrhosis-results-from-a-real-world-cohort-study
#5
Esther Chamorro-de-Vega, Alvaro Gimenez-Manzorro, Carmen-Guadalupe Rodriguez-Gonzalez, Vicente Escudero-Vilaplana, Ana De Lorenzo-Pinto, Irene Iglesias-Peinado, Ana Herranz-Alonso, Maria Sanjurjo Saez
OBJECTIVE: To explore the effectiveness and safety of ombitasvir/paritaprevir/ritonavir and dasabuvir (OBV/PTV/r+DSV) for 12 weeks without ribavirin in adults with chronic HCV genotype 1b infection and compensated cirrhosis. METHODS: Observational study of a prospective cohort of adult patients with HCV genotype 1b infection and compensated cirrhosis who received 12 weeks of OBV/PTV/r and DSV without ribavirin. Effectiveness was assessed by recording the percentage of patients achieving sustained virological response at week 12 post-treatment (SVR12)...
January 11, 2018: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/29322921/tensor-decomposition-based-unsupervised-feature-extraction-identifies-candidate-genes-that-induce-post-traumatic-stress-disorder-mediated-heart-diseases
#6
Y-H Taguchi
BACKGROUND: Although post-traumatic stress disorder (PTSD) is primarily a mental disorder, it can cause additional symptoms that do not seem to be directly related to the central nervous system, which PTSD is assumed to directly affect. PTSD-mediated heart diseases are some of such secondary disorders. In spite of the significant correlations between PTSD and heart diseases, spatial separation between the heart and brain (where PTSD is primarily active) prevents researchers from elucidating the mechanisms that bridge the two disorders...
December 21, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/29322007/co-administration-effects-of-aqueous-extract-of-turnip-leaf-and-metformin-in-diabetic-rats
#7
Moammadmehdi Hassanzadeh-Taheri, Mohammad Hassanpour-Fard, Mohammadreza Doostabadi, Hesam Moodi, Khadijeh Vazifeshenas-Darmiyan, Mehran Hosseini
Background: There is a variety of experimentally proven medicinal plants having antidiabetic properties but data on herb-drug interaction are very limited. Earlier studies indicated that aqueous extract of turnip leaf (AETL) has hypoglycemic potential in diabetic animals. The present study was conducted to evaluate co-administration effects of AETL and metformin, a commonly used antidiabetic drug, in diabetic rats. Methods: Metformin at the two different doses (50,100 mg/kg) and AETL at the dose of 400 mg/kg (separately or concurrent with metformin) were orally given to streptozotocin-induced diabetic rats for 4 weeks daily...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29317399/effect-of-a-single-dose-of-i-v-ondansetron-on-qtc-interval-in-emergency-department-patients
#8
Kai Li, Kathy Vo, Byron K Lee, Newton Addo, Zlatan Coralic
PURPOSE: Results of a study to determine whether i.v. administration of a single dose of 4 mg of ondansetron was associated with QT interval prolongation in emergency department (ED) patients are reported. METHODS: In a prospective observational study conducted at an urban academic medical center ED, a convenience sample of adult ED patients treated with ondansetron 4 mg i.v. were enrolled. A 12-lead electrocardiogram (ECG) was obtained immediately before and 5 minutes after ondansetron administration...
January 9, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29317396/pregabalin-as-adjunctive-therapy-in-benzodiazepine-discontinuation
#9
Kaylee Caniff, Emily Telega, Jolene R Bostwick, Kristen N Gardner
PURPOSE: The available evidence for the use of pregabalin as adjunctive therapy in the discontinuation of benzodiazepines is reviewed. SUMMARY: Pregabalin has been studied as an adjunctive pharmacologic treatment for the discontinuation of long-term benzodiazepine use. Unlike carbamazepine, pregabalin has little potential for drug interactions, and its adverse effects are mostly mild and transient. Pregabalin reduces the release of excitatory neurotransmitters by binding to regulatory subunits of voltage-activated calcium channels...
January 15, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29314587/alternative-foaming-agents-for-topical-treatment-of-ulcerative-colitis
#10
Martin Asama, Alex Hall, Yijun Qi, Branden Moreau, Heidi Walthier, Matthew Schaschwary, Blaine Bristow, Qun Wang
Approximately 907,000 Americans currently suffer from ulcerative colitis, a condition characterized by inflammation of the large intestine or rectum. Treatment of this disease often includes anti-inflammatory medication or immunosuppressants. Here foams are an attractive delivery platform, offering relatively high bioavailability, low systemic exposure, and improved patient comfort. However, the surfactants that generate these foams may adversely affect the diseased mucosa. Therefore, this project evaluated two alternative surfactants for use in topical drug delivery platforms: sodium caseinate and L-α-phosphatidylcholine...
January 3, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29314463/prevalence-and-patterns-of-anti-epileptic-medication-prescribing-in-the-treatment-of-epilepsy-in-older-adults-with-intellectual-disabilities
#11
M O'Dwyer, J Peklar, N Mulryan, P McCallion, M McCarron, M C Henman
BACKGROUND: The prevalence of epilepsy is higher in people with intellectual disability (ID) and increases with the degree of ID. Although life expectancy for people with ID is increasing, people with ID coexisting with epilepsy have a higher mortality rate, particularly those who had recent seizures. There have been few observational studies of the prevalence and patterns of anti-epileptic prescribing among older people with ID and epilepsy. The aim of this study was to investigate prevalence and patterns of anti-epileptic prescribing in the treatment of epilepsy in a representative population of older people with ID and epilepsy...
January 5, 2018: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/29313964/the-next-generation-of-drug-safety-science-coupling-detection-corroboration-and-validation-to-discover-novel-drug-effects-and-drug-drug-interactions
#12
Nicholas P Tatonetti
Rare adverse drug reactions and drug-drug interactions (DDIs) are difficult to detect in randomized trials and impossible to prove using observational studies. We must ascribe to a new way of conducting research that has the efficiency of a retrospective analysis and the rigor of a prospective trial. This can be achieved by integrating observational data from humans with laboratory experiments in model systems. The former establishes clinical significance and the latter supports causality.
February 2018: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29311456/-a-survey-of-the-adverse-effects-and-influence-of-concomitant-drugs-for-methotrexate-intrathecal-administration
#13
Masanobu Uchiyama, Miho Ueno, Yasushi Takamatsu, Koichi Matsuo, Osamu Imakyure, Hidetoshi Kamimura
 In general, the intraventricular administration of cytotoxic antitumor drugs provides a high drug concentration in the cerebrospinal fluid with a reduced risk of systemic adverse reactions. Methotrexate (MTX) high-dose therapy requires close monitoring when performed in combination with trimethoprim-sulfamethoxazole (ST) therapy and proton pump inhibitor (PPI) and nonsteroidal anti-inflammatory drug administration for excretion delay and toxicity enhancement. While the frequency of systemic side effects is thought to be low with intrathecal administration, such effects do rarely but occasionally occur...
2018: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/29306306/use-of-oral-antineoplastic-in-special-situations-in-a-third-level-hospital-real-life-results
#14
Carmen Garcia-Muñoz, Pedro Pablo Rodriguez-Quesada, José Miguel Ferrari-Piquero
OBJECTIVE: To analyse the effectiveness and safety of oral antineoplastic drugs  (ANEOs) that are authorized in special situations in a third-level hospital and to  compare the results obtained with the clinical evidence used for this  authorization. METHOD: Descriptive observational and retrospective study. We included all  adult patients who started treatment with ANEO in special situations during the  year 2016. We collected demographic, treatment-related and clinical variables  (overall survival (OS), progression-free survival (PFS))...
January 1, 2018: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/29304859/a-phase-1-evaluation-of-the-pharmacokinetic-pharmacodynamic-interaction-of-the-anti-malarial-agents-kaf156-and-piperaquine
#15
F Joel Leong, Jay Prakash Jain, Yiyan Feng, Budhaditya Goswami, Daniel S Stein
BACKGROUND: KAF156 is a novel imidazolopiperazine anti-malarial with activity against pre-erythrocytic liver stages, asexual and sexual blood stages. Based on in vitro data, a two-way pharmacokinetic interaction was hypothesized for KAF156 use in combination with piperaquine (PPQ) as both drugs are CYP3A4 substrates and inhibitors. Potential combination effects on the QT interval were also assessed. METHODS: This was an open-label, parallel-group, single-dose study in healthy volunteers randomized to three parallel arms (1:1:1) of 800 mg KAF156 + 1280 mg PPQ, 800 mg KAF156 alone and 1280 mg PPQ alone...
January 5, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29304725/patient-perceived-barriers-and-facilitators-to-the-implementation-of-a-medication-review-in-primary-care-a-qualitative-thematic-analysis
#16
Mirella Carolin Uhl, Christiane Muth, Ferdinand Michael Gerlach, Goentje-Gesine Schoch, Beate Sigrid Müller
BACKGROUND: Although polypharmacy can cause adverse health outcomes, patients often know little about their medication. A regularly conducted medication review (MR) can help provide an overview of a patient's medication, and benefit patients by enhancing their knowledge of their drugs. As little is known about patient attitudes towards MRs in primary care, the objective of this study was to gain insight into patient-perceived barriers and facilitators to the implementation of an MR. METHODS: We conducted a qualitative study with a convenience sample of 31 patients (age ≥ 60 years, ≥3 chronic diseases, taking ≥5 drugs/d); in Hesse, Germany, in February 2016...
January 5, 2018: BMC Family Practice
https://www.readbyqxmd.com/read/29304213/echinocandin-prophylaxis-in-patients-undergoing-haematopoietic-cell-transplantation-and-other-treatments-for-haematological-malignancies
#17
David J Epstein, Susan K Seo, Janice M Brown, Genovefa A Papanicolaou
Antifungal prophylaxis is the standard of care for patients undergoing intensive chemotherapy for haematological malignancy or haematopoietic cell transplantation (HCT). Prophylaxis with azoles reduces invasive fungal infections and may reduce mortality. However, breakthrough infections still occur, and the use of azoles is sometimes complicated by pharmacokinetic variability, drug interactions, adverse events and other issues. Echinocandins are highly active against Candida species, including some organisms resistant to azoles, and have some clinical activity against Aspergillus species as well...
January 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29304211/we-can-do-better-a-fresh-look-at-echinocandin-dosing
#18
Justin C Bader, Sujata M Bhavnani, David R Andes, Paul G Ambrose
First-line antifungal therapies are limited to azoles, polyenes and echinocandins, the former two of which are associated with high occurrences of severe treatment-emergent adverse events or frequent drug interactions. Among antifungals, echinocandins present a unique value proposition given their lower rates of toxic events as compared with azoles and polyenes. However, with the emergence of echinocandin-resistant Candida species and the fact that a pharmacometric approach to the development of anti-infective agents was not a mainstream practice at the time these agents were developed, we question whether echinocandins are being dosed optimally...
January 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29304209/tolerability-profile-of-the-current-antifungal-armoury
#19
Ahmad Mourad, John R Perfect
The tolerability of available antifungal agents is essential to the final outcome of the management of invasive mycoses. There are limited classes of antifungal agents for use, and they can have serious direct toxicities and/or drug-drug interactions. In this review, we examine the common toxicities noted for antifungal agents and attempt to both identify the issues around the adverse events and provide clinical context for their occurrence in these fragile patients.
January 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29304072/potential-drug-drug-interactions-and-their-risk-factors-in-pediatric-patients-admitted-to-the-emergency-department-of-a-tertiary-care-hospital-in-mexico
#20
Olga Morales-Ríos, Luis Jasso-Gutiérrez, Alfonso Reyes-López, Juan Garduño-Espinosa, Onofre Muñoz-Hernández
BACKGROUND: Drug-drug interactions (DDIs) detected in a patient may not be clinically apparent (potential DDIs), and when they occur, they produce adverse drug reactions (ADRs), toxicity or loss of treatment efficacy. In pediatrics, there are only few publications assessing potential DDIs and their risk factors. There are no studies in children admitted to emergency departments (ED). The present study estimates the prevalence and describes the characteristics of potential DDIs in patients admitted to an ED from a tertiary care hospital in Mexico; in addition, potential DDI-associated risk factors are investigated...
2018: PloS One
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