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https://www.readbyqxmd.com/read/29458205/developing-a-stable-aqueous-enteric-coating-formulation-with-hydroxypropyl-methylcellulose-acetate-succinate-hpmcas-mf-and-colloidal-silicon-dioxide-as-anti-tacking-agent
#1
Tanvi M Deshpande, Anisul Quadir, Sakae Obara, Ahmed Ibrahim, Stephen W Hoag
The purpose of this study was to use statistical design of experiments to develop a stable aqueous enteric coating formulation containing stabilizing excipients, such as polyethylene glycol that can minimize hydroxypropyl methylcellulose acetate succinate aggregation and minimize spray-nozzle clogging at elevated processing temperatures. The mechanisms of stabilization (i.e. charge stabilization and molecular interactions) were studied by performing zeta potential and FTIR studies. Electrostatic stabilization by sodium lauryl sulfate and hydrogen bonding by polyethylene glycol provided dispersion stability and yielded a stable aqueous coating formulation that prevented spray-nozzle clogging...
February 16, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29456806/women-with-hereditary-breast-cancer-predispositions-should-avoid-using-their-smartphones-tablets-and-laptops-at-night
#2
EDITORIAL
Seyed Ali Reza Mortazavi, Seyed Mohammad Javad Mortazavi
Breast cancer is the most common malignancy among women, both in the developed and developing countries. Women with mutations in the BRCA1 and BRCA2 genes have an increased risk of breast and ovarian cancers. Recent studies show that short-wavelength visible light disturb the secretion of melatonin and causes circadian rhythm disruption. We have previously studied the health effects of exposure to different levels of radiofrequency electromagnetic fields (RF-EMFs) such as mobile phones, mobile base stations, mobile phone jammers, laptop computers, and radars...
February 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29456312/long-term-effect-of-lactobacillus-brevis-cd2-inersan-%C3%A2-and-or-doxycycline-in-aggressive-periodontitis
#3
Mishal Piyush Shah, Sheela Kumar Gujjari, Veerendrakumar Siddhpur Chandrasekhar
Context: The over usage and broad use of antibiotics resulted in the emergence of resistant microorganisms to the drugs which also disturb the indigenous microflora, which include the Lactobacillus in the oral cavity. Hence, it is preferred to avoid the use of antibiotics. Aims: The hypothesis tested in this study was that 14 days of treatment with Lactobacillus brevis CD2 lozenges, L. brevis CD2 with oral doxycycline, or doxycycline alone would have a beneficial effect on periodontal health after 5 months...
July 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29456149/impact-of-a-universal-medication-schedule-on-rationalising-and-understanding-of-medication-a-randomised-controlled-trial
#4
Eimear McManus, Suzanne McCarthy, Raymond Carson, Laura J Sahm
BACKGROUND: Patients frequently encounter difficulty understanding their prescription drug labels. This problem is more common in patients with limited health literacy (HL). Patients are not always counselled on their medicines by their doctor or pharmacist, therefore this label can be an important source of information. OBJECTIVE: To assess the impact of a Universal Medication Schedule (UMS) on the knowledge and consolidation of a prescription drug regimen compared to standard pharmacy labelling...
February 10, 2018: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/29455092/internet-pseudoscience-testing-opioid-containing-formulations-with-tampering-potential
#5
Jennifer P Pascali, Paolo Fais, Fabio Vaiano, Nicola Pigaiani, Stefano D'Errico, Sandra Furlanetto, Diego Palumbo, Elisabetta Bertol
Drug tampering practices, with the aim to increase availability of drug delivery and/or enhance drug effects, are accessible on Internet and are practiced by some portion of recreational drug users. Not rarely, recreational misuse may result in toxic and even fatal results. The aim of the present study was to assess the tampering risk of medicaments containing different formulations of an opioid in combination with paracetamol or dexketoprofen, following the procedures reported in dedicated forums on the web...
February 10, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29454926/chinese-patent-medicine-xin-ke-shu-inhibits-ca-2-overload-and-dysfunction-of-fatty-acid-%C3%AE-oxidation-in-rats-with-myocardial-infarction-induced-by-lad-ligation
#6
Yong Yang, Hongmei Jia, Meng Yu, Chao Zhou, Lili Sun, Yang Zhao, Hongwu Zhang, Zhongmei Zou
Myocardial infarction (MI) occurs during a sustained insufficient blood supply to the heart, eventually leading to myocardial necrosis. Xin-Ke-Shu tablet (XKS) is a prescription herbal compound and a patented medicine extensively used in the clinical treatment of coronary heart disease (CHD). To understand the molecular mechanism of the XKS action against MI in detail, it is necessary to investigate the altered metabolome and related pathways coincident with clinical features. In this study, tissue-targeted metabonomics based on ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) were developed to explore the metabolic changes associated with XKS treatment in the heart tissue of rats with MI induced by a left anterior descending coronary artery ligation (LAD)...
February 3, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29454028/fabricating-3d-printed-orally-disintegrating-printlets-using-selective-laser-sintering
#7
Fabrizio Fina, Christine M Madla, Alvaro Goyanes, Jiaxin Zhang, Simon Gaisford, Abdul W Basit
Selective laser sintering (SLS) is a three-dimensional printing (3DP) technology employed to manufacture plastic, metallic or ceramic objects. The aim of this study was to demonstrate the feasibility of SLS to fabricating novel solid dosage forms with accelerated drug release properties, and with a view to create orally disintegrating formulations. Two polymers (hydroxypropyl methylcellulose (HPMC E5) and vinylpyrrolidone-vinyl acetate copolymer (Kollidon ® VA 64)) were separately mixed with 5% paracetamol (used as a model drug) and 3% Candurin ® gold sheen colorant; the powder mixes were subjected to SLS printing resulting in the manufacture of printlets (3DP tablets)...
February 14, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29453997/effects-of-para-methoxyamphetamine-pma-on-agonistic-encounters-between-male-mice
#8
Mercedes Martín-López, Ana T Muela, María Cavas, José Francisco Navarro
Para-methoxyamphetamine (PMA) is a synthetic drug chemically similar to the recreational drug 3,4-methylenedioxy-methamphetamine (MDMA or "ecstasy") and often replaces MDMA in tablets that show an "ecstasy" logo. PMA displays a higher toxic potential than MDMA, but the behavioral profile of PMA has been scarcely studied in animal models. Here we evaluated the effects of PMA (2, 4, 8, and 12 mg/kg, i.p.) on agonist encounters between male mice using an ethopharmacological approach, the isolation-induced aggression model...
February 14, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29453042/evaluation-of-the-anti-hypertensive-effect-of-tengfu-jiangya-tablet-by-combination-of-uplc-q-exactive-ms-based-metabolomics-and-itraq-based-proteomics-technology
#9
Yanpeng Tian, Feng Jiang, Yunlun Li, Haiqiang Jiang, Yanjun Chu, Lijuan Zhu, Weixing Guo
OBJECTIVE: Tengfu Jiangya tablet (TJT) is a traditional Chinese medicine formulation composed of Uncaria rhynchophylla and Semen raphani. It is a hospital preparation that is widely used in clinics for treating hypertension. A previous metabolomics study reported that TJT exerted a protective effect on hypertension by restoring impaired NO production, ameliorating the inflammatory state, and vascular remodeling. A clinical proteomics study also revealed five key target proteins during TJT intervention...
February 13, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29452684/evaluation-of-the-safety-tolerability-and-efficacy-of-pimavanserin-versus-placebo-in-patients-with-alzheimer-s-disease-psychosis-a-phase-2-randomised-placebo-controlled-double-blind-study
#10
Clive Ballard, Carol Banister, Zunera Khan, Jeffrey Cummings, George Demos, Bruce Coate, James M Youakim, Randall Owen, Srdjan Stankovic
BACKGROUND: Pimavanserin is a selective 5-HT 2A receptor inverse agonist and antagonist approved in the USA for the treatment of hallucinations and delusions associated with Parkinson's disease psychosis. No safe or effective pharmacological treatment is approved for psychosis in patients with Alzheimer's disease. Therefore, we aimed to evaluate the safety, tolerability, and efficacy of pimavanserin versus placebo in patients with Alzheimer's disease psychosis. METHODS: We did a phase 2, randomised, double-blind, placebo-controlled, single-centre (with multiple affiliated nursing home sites across the UK) study...
March 2018: Lancet Neurology
https://www.readbyqxmd.com/read/29451999/evaluation-of-the-effects-of-the-occlu-pad-for-the-management-of-anisometropic-amblyopia-in-children
#11
Yo Iwata, Tomoya Handa, Hitoshi Ishikawa, Toshiaki Goseki, Nobuyuki Shoji
PURPOSE: In recent years, amblyopia treatment device that can be used with both eyes open have been reported. The Occlu-pad is a device that can present images of tablet terminals to one eye only under binocular open conditions. Till date, no study has reported the effectiveness of Occlu-pad training for anisometropic amblyopia in a series of cases. In the present study, we evaluated the effectiveness of the Occlu-pad for the management of anisometropic amblyopia without the use of occlusion therapy (eyepatch)...
February 16, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29451932/in-vitro-screening-of-the-antibacterial-and-anti-candida-properties-of-crushed-nonantimicrobial-drugs-frequently-prescribed-in-nursing-homes
#12
Julie Lamure, Marlène Chevalier, Pascal Rathelot, Françoise Mignolet, Isabelle Precheur
Frail older adults often experience swallowing disorders, prompting nursing staff to crush tablets, open capsules, and mix drugs into their meals or gelled water. However, crushing drugs can lead to pharmacological and gustatory problems. As crushed drugs can stay in prolonged contact with oral microbial biofilm, the current study aimed to investigate their antimicrobial properties. Crushed drugs were diluted in 1 mL of isotonic water and assayed in vitro for: (a) growth inhibition of five bacterial strains and Candida albicans by the diffusion method; (b) inhibition of Streptococcus salivarius and C...
February 13, 2018: Research in Gerontological Nursing
https://www.readbyqxmd.com/read/29451045/modified-release-paracetamol-overdose-a-prospective-observational-study-atom-3
#13
Angela L Chiew, Geoffrey K Isbister, Colin B Page, Katharine A Kirby, Betty S H Chan, Nicholas A Buckley
BACKGROUND: Modified-release (MR) paracetamol is available in many countries as 665 mg tablets of which 69% is MR and 31% is immediate release. There are concerns that MR paracetamol overdose has higher rates of liver injury despite standard treatment algorithms. The objective of this study was to describe the clinical characteristics and outcomes of acute MR paracetamol overdose. METHODS: Prospective observational study, recruiting patients from January 2013 to June 2017, from five clinical toxicology units and calls to two Poisons Information Centres in Australia...
February 16, 2018: Clinical Toxicology
https://www.readbyqxmd.com/read/29450806/dissolution-and-oral-bioavailability-enhancement-of-praziquantel-by-solid-dispersions
#14
Yanyan Liu, Tianzi Wang, Wenya Ding, Chunliu Dong, Xiaoting Wang, Jianqing Chen, Yanhua Li
The aim of the present investigation was to enhance the solubility, dissolution, and oral bioavailability of praziquantel (PZQ), a poorly water-soluble BCS II drug (Biopharmaceutical Classification System), using a solid dispersion (SD) technique involving hydrophilic copolymers. The SD formulations were prepared by a solvent evaporation method with PZQ and PEG 4000 (polyethylene glycol 4000), PEG 6000, or P 188 polymers at various weight ratios or a combination of PEG 4000/P 188. The optimized SD formulation, which had the highest solubility in distilled water, was further characterized by its surface morphology, crystallinity, and dissolution in 0...
February 15, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29450805/ph-responsive-cap-co-poly-methacrylic-acid-based-hydrogel-as-an-efficient-platform-for-controlled-gastrointestinal-delivery-fabrication-characterization-in-vitro-and-in-vivo-toxicity-evaluation
#15
Syed Ahmed Shah, Muhammad Sohail, Muhammad Usman Minhas, Nisar-Ur-Rehman, Shahzeb Khan, Zahid Hussain, Mudassir, Arshad Mahmood, Mubeen Kousar, Asif Mahmood
Cellulose acetate phthalate-based pH-responsive hydrogel was synthesized for fabrication of polymeric matrix tablets for gastro-protective delivery of loxoprofen sodium. Cellulose acetate phthalate (CAP) was cross-linked with methacrylic acid (MAA) using free radical polymerization technique. Fourier transform infrared (FTIR) spectra confirmed the formation of cross-linked structure of CAP-co-poly(methacrylic acid). Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) confirmed the thermal stability of polymeric networks, and scanning electron microscopy (SEM) and energy-dispersive X-ray spectrum (EDS) images unveiled that the prepared formulations were porous in nature and thus the developed formulations had shown better diffusibility...
February 15, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29448172/analysis-of-quetiapine-in-human-plasma-using-fluorescence-spectroscopy
#16
Islam M Mostafa, Mahmoud A Omar, Dalia M Nagy, Sayed M Derayea
A simple and sensitive spectrofluorimetric method has been development for the assurance of quetiapine fumarate (QTF). The proposed method was utilized for measuring the fluorescence intensity of the yellow fluorescent product at 510nm (λ ex 470nm). The fluorescent product has resulted from the nucleophilic substitution reaction of QTF with 4-chloro-7-nitrobenzofurazane (NBD-Cl) in Mcllvaine buffer (pH7.0). The diverse variables influencing the development of the reaction product were deliberately changed and optimized...
February 6, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29447848/effects-of-tablet-formulation-and-subsequent-film-coating-on-the-supersaturated-dissolution-behavior-of-amorphous-solid-dispersions
#17
Toshiro Sakai, Daiki Hirai, Shin-Ichiro Kimura, Yasunori Iwao, Shigeru Itai
The effects of tablet preparation and subsequent film coating with amorphous solid dispersion (ASD) particles that were composed of a drug with poor water solubility and hydrophilic polymers were investigated. ASD particles were prepared with a drug and vinylpyrrolidone-vinyl acetate copolymer (PVPVA) or polyvinylpyrrolidone (PVP) at a weight ratio of 1:1 or 1:2 using a melt extrusion technique. Tablets were prepared by conventional direct compression followed by pan coating. A mathematical model based on the Noyes-Whitney equation assuming that stable crystals precipitated at the changeable surface area of the solid-liquid interface used to estimate drug dissolution kinetics in a non-sink dissolution condition...
February 12, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29445339/population-pharmacokinetic-modeling-of-a-desmopressin-oral-lyophilisate-in-growing-piglets-as-a-model-for-the-pediatric-population
#18
Elke Gasthuys, An Vermeulen, Siska Croubels, Joske Millecam, Stijn Schauvliege, Thomas van Bergen, Pauline De Bruyne, Johan Vande Walle, Mathias Devreese
Desmopressin is used to treat primary nocturnal enuresis in children. Over the years, various formulations of desmopressin were commercialized of which the sublingual melt tablet is preferred in the pediatric population, despite the lack of full PK studies in this population. A full PK study was performed in growing conventional piglets to evaluate if this juvenile animal model can provide supplementary information to complement the information gap in the pediatric population. A desmopressin sublingual melt tablet (120 μg) was administered to 32 male piglets aged 8 days, 4 weeks, 7 weeks, and 6 months (each group n = 8)...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29445065/questionnaire-survey-from-the-viewpoint-of-concordance-in-patient-and-physician-satisfaction-concerning-hypertensive-treatment-in-elderly-patients-patients-voice-study
#19
Yoshiyuki Ikeda, Takeshi Sasaki, So Kuwahata, Masakazu Imamura, Kanyo Tanoue, Shinichirou Komaki, Mamoru Hashiguchi, Atsushi Kuroda, Yuichi Akasaki, Chikuma Hamada, Mitsuru Ohishi
BACKGROUND: Patient-physician concordance is an important concern in the treatment of elderly patients with hypertension (HT). Treatment that considers concordance is necessary for mutual understanding and therapeutic satisfaction between patients and physicians. However, there have been no studies addressing concordance that objectively analyzed both patient and physician satisfaction before and after treatment.Methods and Results:An exploratory open-label, multicenter, intervention study was conducted...
February 15, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29443426/comprehensive-investigation-into-the-interconversion-of-c-2-diastereomers-of-naringin
#20
Hongliang Yao, Weiwei Su, Linhuo Lin, Wenjun Pan, Xuan Zeng, Panlin Li
Naringin is a flavanone that widely presents on daily diet and traditional medicinal materials. The ratios of naringin C-2 diastereomers are found different in reported samples, thus suspiciously leading to various functions. In this study, we measured the interconversion of C-2 diastereomers intensively with ultimate high-performance liquid chromatography and circular dichroism spectra. We examined the diastereomeric naringins in fresh citrus fruit, Huajuhong decoction pieces, and naringin tablet; evaluated the impact of tablet production procedures in factory; and monitored the rapid racemization in incubation...
February 14, 2018: Chirality
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