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Drug delivery skin

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https://www.readbyqxmd.com/read/29142430/topical-delivery-of-withania-somnifera-crude-extracts-in-niosomes-and-solid-lipid-nanoparticles
#1
Tawona N Chinembiri, Minja Gerber, Lissinda H du Plessis, Jan L du Preez, Josias H Hamman, Jeanetta du Plessis
Background: Withania somnifera is a medicinal plant native to India and is known to have anticancer properties. It has been investigated for its anti-melanoma properties, and since melanoma presents on the skin, it is prudent to probe the use of W. somnifera in topical formulations. To enhance topical drug delivery and to allow for controlled release, the use of niosomes and solid lipid nanoparticles (SLNs) as delivery vesicles were explored. Objective: The objective of this study is to determine the stability and topical delivery of W...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141535/sln-and-nlc-encapsulating-antifungal-agents-skin-drug-delivery-and-their-unexplored-potential-for-treating-onychomycosis
#2
Tais Gratieri, Anna Paula Krawczyk-Santos, Priscila Bianca Rodrigues da Rocha, Marcilio Cunha-Filho, Guilherme Martins Gelfuso, Ricardo Neves Marreto, Stephania Fleury Taveira
BACKGROUND: Lipid nanoparticles have been extensively studied for drug delivery of antifungal drugs, especially for dermatophytosis treatments. They can accumulate in skin appendages and release drugs in a controlled manner and also increase skin moisture, due to the formation of an occlusive film. Since moisture heavily influences nail and skin permeability, these systems seem to pose great potential for antifungal drug delivery. METHODS: We therefore compare skin and nail physiopathological structure and discuss the potential use of lipid nanoparticles in managing skin and nail mycoses, highlighting their unexplored use in onychomycosis...
November 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29132177/an-insight-on-silk-protein-sericin-from-processing-to-biomedical-application
#3
Farogh Ahsan, Tarique Mahmood Ansari, Shazia Usmani, Paramdeep Bagga
Silks are naturally occurring polymers that have been used clinically as sutures for hundreds of years. It's so for obtained from insects or worms, silk consists of a filament core protein, termed fibroin, and a glue-like coating made up of sericin proteins. An important component of silk has an extended history of being discarded as a waste in the course of silk processing. The cost of sericin for tissue engineering is underestimated and its capability in using as regenerative remedy has simply began to be explored...
November 13, 2017: Drug Research
https://www.readbyqxmd.com/read/29132043/the-effect-of-diethylene-glycol-monoethyl-ether-on-skin-penetration-ability-of-diclofenac-acid-nanosuspensions
#4
Rosa Pireddu, Chiara Sinico, Guido Ennas, Michele Schlich, Donatella Valenti, Sergio Murgia, Francesca Marongiu, Anna Maria Fadda, Francesco Lai
The poor ability of many drugs to cross skin layers is the main limiting factor for the exploitation of the transdermal route for drug delivery. As a consequence, several approaches have been proposed to overcome the skin barrier, such as the inclusion of penetration enhancers in the topically applied drug solutions and emulsions. In this work, the penetration enhancer diethylene glycol monoethyl ether was included in novel diclofenac acid nanocrystal formulations, developed using the wet media milling technique and Poloxamer 188 as stabilizer...
November 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29128515/injectable-network-biomaterials-via-molecular-or-colloidal-self-assembly
#5
Jugal Kishore Sahoo, Michael A VandenBerg, Matthew J Webber
Self-assembly is a powerful tool to create functional materials. A specific application for which self-assembled materials are ideally suited is in creating injectable biomaterials. Contrasting with traditional biomaterials that are implanted through surgical means, injecting biomaterials through the skin offers numerous advantages, expanding the scope and impact for biomaterials in medicine. In particular, self-assembled biomaterials prepared from molecular or colloidal interactions have been frequently explored...
November 8, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29125423/management-of-chronic-neuropathic-pain-with-single-and-compounded-topical-analgesics
#6
Nebojsa Nick Knezevic, Tatiana Tverdohleb, Farid Nikibin, Ivana Knezevic, Kenneth D Candido
The goal of our review was to emphasize important aspects that physicians should take into consideration when prescribing topical analgesics as part of chronic neuropathic pain treatment. We discuss the dermatopharmacokinetics and microstructural components of the skin, differences between topical and transdermal drug delivery, and topical medication effects on peripheral neuropathy and central sensitization. Even though the US FDA approved topical analgesics are 8%-capsaicin and 5%-lidocaine patches for treating postherpetic neuralgia, there are many other studies conducted on the efficacy of topical ketamine cream, clonidine gel, topical gabapentin, topical baclofen and topical phenytoin for peripheral neuropathic pain, either alone or in combination with other formulations...
November 10, 2017: Pain Management
https://www.readbyqxmd.com/read/29125060/dendritic-polymers-for-dermal-drug-delivery
#7
Kaushalkumar Dave, Venkata Vamsi Krishna Venuganti
Skin-mediated therapeutic delivery is a potential alternative to traditional drug delivery approaches. However, dermal drug delivery is limited to the molecules with optimal physico-chemical properties. To overcome this barrier for delivering 'nonideal' drug molecules across the skin, different drug carriers and penetration enhancement methods have been investigated. Conventional chemical and physical approaches for dermal drug delivery are limited by their skin irritation potential, complexity of application and poor patient compliance...
December 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/29116753/self-assembled-colloidal-gel-using-cell-membrane-coated-nanosponges-as-building-blocks
#8
Yue Zhang, Weiwei Gao, Yijie Chen, Tamara Escajadillo, Jessica Ungerleider, Ronnie H Fang, Karen Christman, Victor Nizet, Liangfang Zhang
Colloidal gels consisting of oppositely charged nanoparticles are increasingly utilized for drug delivery and tissue engineering. Meanwhile, cell membrane-coated nanoparticles are becoming a compelling biomimetic system for innovative therapeutics. Here, we demonstrate the successful use of cell membrane-coated nanoparticles as building blocks to formulate a colloidal gel that gelates entirely based on material self-assembly without chemical cross-linking. Specifically, we prepare red blood cell membrane-coated nanosponges and mix them with an appropriate amount of cationic nanoparticles, resulting in a spontaneously formed gel-like complex...
November 10, 2017: ACS Nano
https://www.readbyqxmd.com/read/29116267/permeation-pathways-through-lateral-domains-in-model-membranes-of-skin-lipids
#9
Annalaura Del Regno, Rebecca Notman
An understanding of how molecules permeate the complex lipid matrix of the stratum corneum (SC) skin barrier is important for transdermal drug delivery, preventing the adsorption of toxic chemicals and tackling skin diseases. In this paper we present atomistic molecular dynamics simulations of skin-lipid bilayers composed of ceramides, cholesterol (CHOL) and free fatty acids at different lipid compositions and levels of hydration and investigate both perpendicular and lateral permeation pathways through the systems...
November 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29115365/interfacial-rheological-behaviors-of-inclusion-complexes-of-cyclodextrin-and-alkanes
#10
Ce Wang, Xulong Cao, Yangwen Zhu, Zhicheng Xu, Qingtao Gong, Lei Zhang, Lu Zhang, Sui Zhao
The transformation of cyclodextrins (CDs) and alkanes from separated monomers to inclusion complexes at the interface is illustrated by analyzing the evolution of interfacial tension along with the variation of interfacial area for an oscillating drop. Amphiphilic intermediates are formed by threading one CD molecule on one alkane molecule at the oil/aqueous interface. After that, the amphiphilic intermediates transform into non-amphiphilic supramolecules which further assemble through hydrogen bonding at the oil/aqueous interface to generate a rigid network...
November 8, 2017: Soft Matter
https://www.readbyqxmd.com/read/29111151/experimental-optimization-of-lornoxicam-liposomes-for-sustained-topical-delivery
#11
Joshny Joseph, Vedha Hari B N, Ramya Devi D
The purpose of the present investigation is to formulate liposomes of Lornoxicam for topical delivery using Central Composite Design, to provide a sustained release of the drug and thereby extend its elimination half-life. Liposomes were prepared by thin film hydration method with pH induced vesiculation. The liposomes were assessed for their particle size, charge, morphology and drug entrapment and characterized using TGA-DSC and FTIR analysis, to assess the interaction between the drug and excipients. The in vitro release study was performed using modified USP dissolution apparatus-I using three different dissolution media and the ex vivo release study was performed using goat skin...
October 27, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29111148/effects-of-opioid-and-nonopioid-analgesics-on-canine-wheal-formation-and-cultured-human-mast-cell-degranulation
#12
Eric Schmidt-Rondon, Zhenping Wang, Shelle A Malkmus, Anna Di Nardo, Keith Hildebrand, Linda Page, Tony L Yaksh
Mast cell (MC) degranulation has been implicated in the side effect profile of a variety of clinically useful agents. Thus, after intrathecal delivery, formation of space-occupying, meningeally-derived masses may be related to local MC degranulation. We systematically characterized degranulating effects of opioid and nonopioid analgesics on cutaneous flares in the dog and in primary human MC (hMC) cultures. METHODS: Dogs were anesthetized with IV propofol and received intradermal (ID) injections (50μL)...
October 27, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29111097/lipid-nanocarriers-as-skin-drug-delivery-systems-properties-mechanisms-of-skin-interactions-and-medical-applications
#13
REVIEW
M Sala, R Diab, A Elaissari, H Fessi
During the past decades, lipid nanocarriers are gaining momentum with their multiple advantages for the management of skin diseases. Lipid nanocarriers enable to target the therapeutic payload to deep skin layers or even to reach the blood circulation making them a promising cutting-edge technology. Lipid nanocarriers refer to a large panel of drug delivery systems. Lipid vesicles are the most conventional, known to be able to carry lipophilic and hydrophilic active agents. A variety of lipid vesicles with high flexibility and deformability could be obtained by adjusting their composition; namely ethosomes, transfersomes and penetration enhancer lipid vesicles which achieve the best results in term of skin permeation...
October 27, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29108729/-liquid-crystalline-systems-based-on-glyceryl-monooleate-and-penetration-enhancers-for-skin-delivery-of-celecoxib-characterization-in-vitro-drug-release-and-in-vivo-studies
#14
Mariane de Cássia Lima Dante, Livia Neves Borgheti-Cardoso, Marcia Carvalho de Abreu Fantini, Fabíola Silva Garcia Praça, Wanessa Silva Garcia Medina, Maria Bernadete Riemma Pierre, Marilisa Guimarães Lara
Celecoxib (CXB) is a widely used anti-inflammatory drug that also acts as a chemopreventive agent against several types of cancer, including skin cancer. As the long-term oral administration of CXB has been associated with severe side effects, the skin delivery of this drug represents a promising alternative for the treatment of skin inflammatory conditions and/or chemoprevention of skin cancer. We prepared and characterized liquid crystalline systems based on glyceryl monooleate (GMO) and water containing penetration enhancers which were primarily designed to promote skin delivery of CXB...
November 3, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29107604/the-effect-of-membrane-softeners-on-rigidity-of-lipid-vesicle-bilayers-derivation-from-vesicle-size-changes
#15
Mustafa Elsayed, Marwa M Ibrahim, Gregor Cevc
Deformability is not just a fundamentally interesting vesicle characteristic; it is also the key determinant of vesicle ability to cross the skin barrier; i.e. skin penetrability. Development of bilayer vesicles for drug and vaccine delivery across the skin should hence involve optimization of this property, which is controllable by the concentration of bilayer softeners in or near the vesicle bilayers. To this end, we propose a simple method for quantifying the effect of bilayer softeners on deformability of bilayer vesicles...
October 28, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/29104058/ionic-liquid-microemulsions-assisting-in-the-transdermal-delivery-of-dencichine-preparation-in-vitro-and-in-vivo-evaluations-and-investigation-of-the-permeation-mechanism
#16
Chengxiao Wang, Junxiao Zhu, Ding Zhang, Ye Yang, Luyao Zheng, Yuan Qu, Xiaoyan Yang, Xiuming Cui
A novel microemulsion was developed and characterized for topical delivery of Dencichine (Den). Two imidazaolium ionic liquid, 1-hydroxyethyl-3-methylimidazolium chloride ([HOEIM]Cl) and 1-butyl-3-methylimidazolium dodecanesulfate ([BMIM]C12SO3) were incorporated into the aqueous and surfactant phases respectively for the remarkable enhancement on skin permeation. The nano-carrier was developed and optimized based on a pseudo-ternary phase diagram. The optimized formulation was composed of 50% water/[HOEIM]Cl mix (1:1) as water phase, 20% Tween 80/[BMIM]C12SO3 mix (1:1) as surfactant, 10% propylene glycol as co-surfactant and 20% IPM as oil phase...
November 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29104055/improving-the-direct-penetration-into-tissues-underneath-the-skin-with-iontophoresis-delivery-of-a-ketoprofen-cationic-prodrug
#17
Shabbir Lobo, Guang Yan
Current topical nonsteroidal anti-inflammatory drugs (NSAIDs) showed marginal efficacy in treatment of musculoskeletal disorders due to their fast clearance by skin blood flow and thus little direct penetration into the underlying muscle and joint tissues. Using ketoprofen (Kt) as a model NSAID and converting it to a cationic ester prodrug ketoprofen choline chloride (KCC), this study was to investigate the iontophoresis delivery of the prodrug KCC for improving the drug retention in the skin and the direct penetration into underlying tissues...
November 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29104049/tracking-the-transdermal-penetration-pathways-of-optimized-1-curcumin-loaded-chitosan-nanoparticles-via-confocal-laser-scanning-microscopy
#18
Salma M Abdel-Hafez, Rania M Hathout, Omaima A Sammour
Curcumin-loaded chitosan nanoparticles intended for transdermal delivery were successfully prepared, optimized and their fate, interaction and pathway through the skin were tracked. D-optimal response surface methodology was used for the nanoparticles optimization. Xy and z-stack confocal laser scanning microscopic images were used for the particles tracking after measuring the drug permeation through the skin using Franz diffusion cells. Very small particle sizes in the range of 33.85-199.23nm accompanied with low PDI values of 0...
November 2, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29098874/prolonged-skin-retention-of-clobetasol-propionate-by-bio-based-microemulsions-a-potential-tool-for-scalp-psoriasis-treatment
#19
Rita Langasco, Sakine Tuncay Tanrıverdi, Özgen Özer, Marta Roldo, Massimo Cossu, Giovanna Rassu, Paolo Giunchedi, Elisabetta Gavini
Novel effective and cosmetically acceptable formulations are needed for the treatment of scalp psoriasis, due to the poor efficacy of the current products. The challenge in developing safe, efficient and convenient delivery systems for this drug was addressed in the present work by formulating clobetasol propionate loaded W/O microemulsions. Pseudo-ternary phase diagrams were constructed by using a combination of biocompatible and biodegradable excipients. Characterization studies demonstrated that selected microemulsions had suitable technological features such as: being Newtonian fluids, possessing low viscosity and high thermodynamic stability...
November 3, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29098871/design-of-antihistaminic-transdermal-films-based-on-alginate-chitosan-polyelectrolyte-complexes-characterization-and-permeation-studies
#20
Sonia Lefnaoui, Nadji Moulai-Mostefa, Madiha M Yahoum, Sarah N Gasmi
The purpose of this study was to develop suitable matrix type transdermal drug delivery systems of Ketotifen fumarate (KF) as antiasthmatic drugs. Chitosan-alginate polyelectrolyte complex (PEC) films were used as drug release regulators for KF. Antihistaminic films with variable PEC compositions were prepared using different ratios of chitosan (CTS) to sodium alginate (ALG). Propylene glycol (PG) was used as plasticizer; Tween 80 (T80) and Span 20 (S20) were used as permeability enhancers. Nine formulations were obtained by film casting method and characterized in terms of weight uniformity, thickness, folding endurance, moisture lost, and moisture absorption...
November 3, 2017: Drug Development and Industrial Pharmacy
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