keyword
MENU ▼
Read by QxMD icon Read
search

Excipient

keyword
https://www.readbyqxmd.com/read/28449156/development-of-multiple-unit-floating-drug-delivery-system-of-clarithromycin-formulation-in-vitro-dissolution-by-modified-dissolution-apparatus-in-vivo-radiographic-studies-in-human-volunteers
#1
Arun B Reddy, Narendar D Reddy
Clarithromycin (CM), a broad spectrum macrolide antibiotic used to eradicate H. pylori in peptic ulcer. Clarithromycin (CM) is well absorbed from the gastrointestinal tract, but has a bioavailability of 50% due to rapid biodegradation. The aim of this investigation was to increase the gastric residence time, and to control the drug release of clarithromycin by formulating into multiple unit floating mini-tablets. Floating tablets were prepared by using direct compression method with HPMC K4M and Polyox WSR 1105 as release retarded polymers and sodium bicarbonate as gas generating agent...
April 27, 2017: Drug Research
https://www.readbyqxmd.com/read/28448194/co-administration-of-an-excipient-oligonucleotide-helps-delineate-pathways-of-productive-and-nonproductive-uptake-of-phosphorothioate-antisense-oligonucleotides-in-the-liver
#2
Aaron J Donner, Edward V Wancewicz, Heather M Murray, Sarah Greenlee, Noah Post, Melanie Bell, Walt F Lima, Eric E Swayze, Punit P Seth
Phosphorothioate (PS) modified antisense oligonucleotides (ASOs) have progressed rapidly in the clinic for treating a variety of disease indications. We previously demonstrated that the activity of PS ASOs in the liver can be enhanced by co-infusion of an excipient oligonucleotide (EON). It was posited that the EON saturates a nonproductive uptake pathway(s) thereby permitting accumulation of the PS ASO in a productive tissue compartment. In this report, we measured PS ASO activity following administration by bolus, infusion or co-fusion with EON within hepatocytes and nonparenchymal cells (NPCs), of the liver...
April 27, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28447878/development-of-novel-amisulpride-loaded-liquid-self-nanoemulsifying-drug-delivery-systems-via-dual-tackling-of-its-solubility-and-intestinal-permeability
#3
Wael Gamal, Rania H Fahmy, Magdy I Mohamed
OBJECTIVE: the aim of the current investigation was to enhance the oral biopharmaceutical behavior; solubility and intestinal permeability of amisulpride (AMS) via development of liquid self-nanoemulsifying drug delivery systems (L-SNEDDS) containing bioenhancing excipients. METHODS: the components of L-SNEDDS were identified via solubility studies and emulsification efficiency tests, and ternary phase diagrams were constructed to identify the efficient self-emulsification regions...
April 27, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28445625/the-use-of-an-occlusion-perfusion-catheter-to-deliver-paclitaxel-to-the-arterial-wall
#4
Marzieh K Atigh, Emily Turner, Uwe Christians, Saami K Yazdani
AIM: Non-stent drug delivery platforms have recently emerged as an alternative treatment of peripheral arterial disease. Perfusion catheters have the potential to directly deliver anti-proliferative agents to the medial arterial layer to prevent restenosis. The purpose of this study was to therefore determine the effectiveness of a perfusion catheter to deliver paclitaxel, a proven anti-proliferative agent, to combat restenosis. METHODS: A bench-top model was utilized to determine the varying parameters of a novel occlusion perfusion catheter to maximize paclitaxel delivery using pharmacokinetic evaluation and fluorescent microscopy...
April 26, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28442578/multicentre-non-interventional-study-to-assess-the-profile-of-patients-with-uncontrolled-rhinitis-prescribed-a-novel-formulation-of-azelastine-hydrochloride-and-fluticasone-propionate-in-a-single-spray-in-routine-clinical-practice-in-the-uk
#5
Glenis Scadding, David Price, Tariq El-Shanawany, Shahzada Ahmed, Jaydip Ray, Ravishankar Sargur, Nirmal Kumar
OBJECTIVE: The aims of this study were (1) to characterise the type of patient prescribed MP-AzeFlu (Dymista, a novel formulation of azelastine hydrochloride, fluticasone propionate and excipients in a single spray) in real life in the UK and physicians' reasons for prescribing it and (2) to quantify the personal and societal burden of allergic rhinitis (AR) in the UK prior to MP-AzeFlu prescription. DESIGN, SETTING AND PARTICIPANTS: This multicentre, non-interventional study enrolled patients (n=193) with moderate-to-severe AR and acute symptoms who were eligible to receive treatment with MP-AzeFlu according to its licensed indications...
April 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28441861/anionic-polymer-and-quantum-dot-excipients-to-facilitate-sirna-release-and-self-reporting-of-disassembly-in-stimuli-responsive-nanocarrier-formulations
#6
Chad T Greco, Jason C Andrechak, Thomas H Epps Iii, Millicent O Sullivan
The incorporation of anionic excipients into polyplexes is a promising strategy for modulating siRNA binding vs. release and integrating diagnostic capabilities; however, specific design criteria and structure-function relationships are needed to facilitate the development of nanocarrier-based theranostics. Herein, we incorporated poly(acrylic acid) (PAA) and quantum dot (QD) excipients into photolabile siRNA polyplexes to increase gene silencing efficiencies by up to 100% and enable self-reporting of nanocarrier disassembly...
April 25, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28435220/formulation-release-characteristics-and-bioavailability-study-of-gastroretentive-floating-matrix-tablet-and-floating-raft-system-of-mebeverine-hcl
#7
Mohamed A El Nabarawi, Mahmoud H Teaima, Rehab A Abd El-Monem, Nagla A El Nabarawy, Dalia A Gaber
To prolong the residence time of dosage forms within the gastrointestinal tract until all drug is released at the desired rate is one of the real challenges for oral controlled-release drug delivery systems. This study was designed to develop a controlled-release floating matrix tablet and floating raft system of Mebeverine HCl (MbH) and evaluate different excipients for their floating behavior and in vitro controlled-release profiles. Oral pharmacokinetics of the optimum matrix tablet, raft system formula, and marketed Duspatalin(®) 200 mg retard as reference were studied in beagle dogs...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28435078/preformulation-studies-of-ceftriaxone-for-pediatric-non-parenteral-administration-as-an-alternative-to-existing-injectable-formulations
#8
Tina Kauss, Mathieu Marchivie, Thida Phoeung, Alexandra Gaubert, Amélie Désiré, Giovanni Tonelli, Chantal Boyer, Marie-Hélène Langlois, Anthony Cartwright, Melba Gomes, Nicholas White, Karen Gaudin
Ceftriaxone, a third generation cephalosporin, has a wide antibacterial spectrum that has good CNS penetration, which makes it potentially suitable for initial treatment of severe neonatal pediatric infections providing suitable formulation. We evaluated its physicochemical and technical characteristics to assess its potential for development as a non-parenteral dosage form. As ceftriaxone is marked only for injectable use, these data are not available. Using HPLC and Karl Fischer titration, sensitivity of ceftriaxone to water, feasibility and impact of pharmaceutical processes and compatibility with common pharmaceutical excipients were assessed...
April 20, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28434935/solid-nanofoams-based-on-cellulose-nanofibers-and-indomethacin-the-effect-of-processing-parameters-and-drug-content-on-material-structure
#9
J Bannow, J-W Benjamins, J Wohlert, K Löbmann, A J Svagan
The unique colloidal properties of cellulose nanofibers (CNF), makes it a very interesting new excipient in pharmaceutical formulations, as CNF in combination with some poorly-soluble drug can create nanofoams with closed cells. Previous nanofoams, created with the model drug indomethacin, demonstrated a prolonged release compared to films, owing to the tortuous diffusion path that the drug needs to take around the intact air-bubbles. However, the nanofoam was only obtained at a relatively low drug content of 21wt% using fixed processing parameters...
April 20, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28433532/exci-cest-exploiting-pharmaceutical-excipients-as-mri-cest-contrast-agents-for-tumor-imaging
#10
Dario Livio Longo, Fatima Zzahra Moustaghfir, Alexandre Zerbo, Lorena Consolino, Annasofia Anemone, Martina Bracesco, Silvio Aime
Chemical Exchange Saturation Transfer (CEST) approach is a novel tool within magnetic resonance imaging (MRI) that allows visualization of molecules possessing exchangeable protons with water. Many molecules, employed as excipients for the formulation of finished drug products, are endowed with hydroxyl, amine or amide protons, thus can be exploitable as MRI-CEST contrast agents. Their high safety profiles allow them to be injected at very high doses. Here we investigated the MRI-CEST properties of several excipients (ascorbic acid, sucrose, N-acetyl-d-glucosamine, meglumine and 2-pyrrolidone) and tested them as tumor-detecting agents in two different murine tumor models (breast and melanoma cancers)...
April 19, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28432018/on-the-role-of-api-in-determining-porosity-pore-structure-and-bulk-modulus-of-the-skeletal-material-in-pharmaceutical-tablets-formed-with-mcc-excipient
#11
Cathy Ridgway, Prince Bawuah, Daniel Markl, J Axel Zeitler, Jarkko Ketolainen, Kai-Erik Peiponen, Patrick Gane
The physical properties and mechanical integrity of pharmaceutical tablets are of major importance when loading with active pharmaceutical ingredient(s) (API) in order to ensure ease of processing, control of dosage and stability during transportation and handling prior to patient consumption. The interaction between API and excipient, acting as functional extender and binder, however, is little understood in this context. The API indomethacin is combined in this study with microcrystalline cellulose (MCC) at increasing loading levels...
April 18, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28429837/fluorescence-based-sensor-for-selective-and-sensitive-detection-of-amoxicillin-amox-in-aqueous-medium-application-to-pharmaceutical-and-biomedical-analysis
#12
Samadhan P Pawar, Laxman S Walekar, Dattatray B Gunjal, Dattatray K Dalavi, Anil H Gore, Prashant V Anbhule, Shivajirao R Patil, Govind B Kolekar
We here for the first time demonstrate an analytical approach for the highly selective and sensitive detection of amoxicillin (Amox) in aqueous medium based on the fluorescence quenching of quantum dots (QDs). The change in fluorescence intensity of mercaptopropionic acid-capped cadmium sulphide (MPA-CdS) QDs is attributed to the increasing concentration of Amox. The results show that the fluorescence quenching of QDs by Amox takes place through both static and dynamic types of quenching mechanism. The fluorescence quenching of QDs with increase in concentration of Amox shows the linear range between 5 μg ml(-1) and 30 μg ml(-1) and the limit of detection (LOD) is 5...
April 21, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28427886/identification-of-excipients-for-stabilizing-fiberless-adenovirus-as-biopharmaceuticals
#13
Grit Kupgan, Shyamal P Choudhari, Nicholas H Flynn, Adane Nigatu, Sravanthi Vupputuri, William D Picking, Wendy L Picking, Joshua D Ramsey
Reducing the promiscuous tropism of native adenovirus by using fiberless adenovirus is advantageous towards its use as a gene therapy vector or vaccine component. The removal of the fiber protein on native adenovirus abrogates several undesirable interactions; however, this approach decreases the particle's physical stability. In order to create stable fiberless adenovirus for pharmaceutical use, the effects of temperature and pH on the particle's stability profile must be addressed. Our results indicate that the stability of fiberless adenovirus is increased when it is stored in mildly acidic conditions around pH 6...
April 17, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28421428/how-has-cder-prepared-for-the-nano-revolution-a-review-of-risk-assessment-regulatory-research-and-guidance-activities
#14
Katherine M Tyner, Nan Zheng, Stephanie Choi, Xiaoming Xu, Peng Zou, Wenlei Jiang, Changning Guo, Celia N Cruz
The Nanotechnology Risk Assessment Working Group in the Center for Drug Evaluation and Research (CDER) within the United States Food and Drug Administration (FDA) was established to assess the potential impact of nanotechnology on drug products. One of the working group's major initiatives has been to conduct a comprehensive risk management exercise regarding the potential impact of nanomaterial pharmaceutical ingredients and excipients on drug product quality, safety, and efficacy. This exercise concluded that current review practices and regulatory guidance are capable of detecting and managing the potential risks to quality, safety, and efficacy when a drug product incorporates a nanomaterial...
April 18, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28421352/a-new-role-of-fine-excipient-materials-in-carrier-based-dry-powder-inhalation-mixtures-effect-on-deagglomeration-of-drug-particles-during-mixing-revealed
#15
Ahmed O Shalash, Mustafa M A Elsayed
The potential of fine excipient materials to improve the performance of carrier-based dry powder inhalation mixtures is well acknowledged. The mechanisms underlying this potential are, however, open to question till date. Elaborate understanding of these mechanisms is a requisite for rational rather than empirical development of ternary dry powder inhalation mixtures. While effects of fine excipient materials on drug adhesion to and detachment from surfaces of carrier particle have been extensively investigated, effects on other processes, such as carrier-drug mixing, capsule/blister/device filling, or aerosolization in inhaler devices, have received little attention...
April 18, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28418637/development-and-application-of-an-msall-based-approach-for-the-quantitative-analysis-of-linear-polyethylene-glycols-in-rat-plasma-by-liquid-chromatography-triple-quadrupole-time-of-flight-mass-spectrometry
#16
Xiaotong Zhou, Xiangjun Meng, Longmei Cheng, Chong Su, Yantong Sun, Lingxia Sun, Zhaohui Tang, John Paul Fawcett, Yan Yang, Jingkai Gu
Polyethylene glycols (PEGs) are synthetic polymers composed of repeating ethylene oxide subunits. They display excellent biocompatibility and are widely used as pharmaceutical excipients. To fully understand the biological fate of PEGs requires accurate and sensitive analytical methods for their quantitation. Application of conventional liquid chromatography-tandem mass spectrometry (LC-MS/MS) is difficult because PEGs have polydisperse molecular weights (MWs) and tend to produce multicharged ions in-source resulting in innumerable precursor ions...
April 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28415529/a-sensitive-voltammetric-detection-of-pramipexole-based-on-1-1-3-3-tetramethyldisilazanecarbon-nanotube-modified-electrode
#17
Saeede Amirighadi, Jahan Bakhsh Raoof, Fereshteh Chekin, Reza Ojani
A simple low-cost method is proposed to fabricate a functionalized multi-wall carbon nanotube (MWCNT) with 1,1,3,3-tetramethyldisilazane (TMDS) molecule. The techniques of scanning electron microscope (SEM) with electron diffraction and energy dispersive X-ray (EDAX) analysis were applied to characterize the functionalized TMDS-MWCNT. The results showed that a MWCNT with high functionalization of TMDS can be obtained using this simple method. A new nanostructure sensor was constructed based on a glassy carbon electrode modified with TMDS-MWCNT (TMDS-MWCNT/GCE)...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414978/investigation-on-the-relationship-between-solubility-of-artemisinin-and-polyvinylpyrroli-done-addition-by-using-daosd-approach
#18
Jin Zhang, Ran Guo, Anqi He, Shifu Weng, Xiuxiang Gao, Yizhuang Xu, Isao Noda, Jinguang Wu
In this work, we investigated the influence of polyvinylpyrrolidone (PVP) on the solubility of artemisinin in aqueous solution by using quantitative (1)H NMR. Experimental results demonstrate that about 4 times of incremental increase occurs on the solubility of artemisinin upon introducing PVP. In addition, dipole-dipole interaction between the ester group of artemisinin and the amide group of N-methylpyrrolidone (NMP), a model compound of PVP, is characterized by two-dimensional (2D) correlation FTIR spectroscopy with the DAOSD (Double Asynchronous Orthogonal Sample Design) approach developed in our previous work...
March 29, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28412819/d-%C3%AE-tocopheryl-polyethylene-glycol-succinate-micelles-structure-kinetic-pathways-and-modulation-by-cyclodextrins
#19
Joan Puig-Rigall, Isabelle Grillo, Cecile A Dreiss, Gustavo González-Gaitano
The aggregation and structure of D-α-tocopheryl polyethylene glycol succinate micelles, TPGS-1000, an amphiphilic derivative of vitamin E, were characterized by scattering and spectroscopic methods, and the impact of different cyclodextrins (CDs) on the self-assembly studied, with the view of combining these two versatile pharmaceutical excipients in drug formulations. Combined SANS, DLS, time-resolved and steady-state fluorescence emission experiments revealed a core-shell architecture with a high aggregation number (Nagg ~ 100) and a highly hydrated PEO corona (~ 11 molecules of solvent per EO unit)...
April 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28411332/evaluation-of-rosin-gum-and-eudragit%C3%A2-rs-po-as-a-functional-film-coating-material
#20
Suélen Plaza Pomin, Isabela Angeli de Lima, Rogério Ribeiro Pezarini, Osvaldo Albuquerque Cavalcanti
Polymers are essential tools in the research and development of new therapeutic devices. The diversity and flexibility of these materials have generated high expectations in the composition of new materials with extraordinary abilities, especially in the design of new systems for the modified release of pharmaceutically active ingredients. The natural polymer rosin features moisture protection and pH-dependent behavior (i.e., it is sensitive to pH > 7.0), suggesting its possible use in pharmaceutical systems...
April 14, 2017: AAPS PharmSciTech
keyword
keyword
82396
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"