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https://www.readbyqxmd.com/read/29340978/methotrexate-aspasomes-against-rheumatoid-arthritis-optimized-hydrogel-loaded-liposomal-formulation-with-in-vivo-evaluation-in-wistar-rats
#1
Saikat Ghosh, Biswajit Mukherjee, Shreyasi Chaudhuri, Tanushree Roy, Alankar Mukherjee, Soma Sengupta
Aspasomes of methotrexate with antioxidant, ascorbyl palmitate, were developed and optimized using factorial design by varying parameters such as lipid molar ratio, drug to lipid molar ratio, and type of hydration buffer for transdermal delivery for disease modifying activity in rheumatoid arthritis (RA). Aspasomes were characterized by drug-excipients interaction, particle size analysis, determination of zeta potential, entrapment efficiency, and surface properties. The best formulation was loaded into hydrogel for evaluation of in vitro drug release and tested in vivo against adjuvant induced arthritis model in wistar rats, by assessing various physiological, biochemical, hematological, and histopathological parameters...
January 16, 2018: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29332198/drug-delivery-and-transport-into-the-central-circulation-an-example-of-zero-order-in-vivo-absorption-of-rotigotine-from-a-transdermal-patch-formulation
#2
Willi Cawello, Marina Braun, Jens-Otto Andreas
BACKGROUND AND OBJECTIVE: Pharmacokinetic studies using deconvolution methods and non-compartmental analysis to model clinical absorption of drugs are not well represented in the literature. The purpose of this research was (1) to define the system of equations for description of rotigotine (a dopamine receptor agonist delivered via a transdermal patch) absorption based on a pharmacokinetic model and (2) to describe the kinetics of rotigotine disposition after single and multiple dosing...
January 13, 2018: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/29315905/recent-advances-in-wearable-transdermal-delivery-systems
#3
REVIEW
Morteza Amjadi, Sahar Sheykhansari, Bradley J Nelson, Metin Sitti
Wearable transdermal delivery systems have recently received tremendous attention due to their noninvasive, convenient, and prolonged administration of pharmacological agents. Here, the material prospects, fabrication processes, and drug-release mechanisms of these types of therapeutic delivery systems are critically reviewed. The latest progress in the development of multifunctional wearable devices capable of closed-loop sensation and drug delivery is also discussed. This survey reveals that wearable transdermal delivery has already made an impact in diverse healthcare applications, while several grand challenges remain...
January 8, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29313295/radiation-preparation-of-l-arginine-acrylic-acid-hydrogel-matrix-patch-for-transdermal-delivery-of-propranolol-hcl-in-hypertensive-rats
#4
Rasha R Radwan, Heba A Mohamed, H E Ali, Ghada A Mahmoud
In the present study, L-arginine/acrylic acid (Arg/AAc) batch hydrogel was successfully prepared by gamma irradiation for transdermal delivery of propranolol HCl in hypertensive rats. The resulted system has been characterized by FTIR to confirm the hydrogel formation. The swelling behavior of the prepared hydrogels was investigated as a function of time and pH. The kinetics of swelling has been investigated. In vivo pharmacokinetics evaluation, skin irritation test, and histopathological studies were investigated...
January 8, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29301433/in-vitro-and-in-vivo-assessment-of-polymer-microneedles-for-controlled-transdermal-drug-delivery
#5
Bo Zhi Chen, Mohammad Ashfaq, Xiao Peng Zhang, Jia Nan Zhang, Xin Dong Guo
Microneedles (MNs) system for transdermal drug delivery has the potential to improve therapeutic efficacy, proving an approach that is more convenient and acceptable than traditional medication systems. The present study systematically researched dissolving polymer MNs fabricated from various common FDA-approved biocompatible materials, including gelatin, chitosan, hyaluronic acid (HA) and polyvinyl alcohol (PVA). Upon application of MN patches to the porcine cadaver skin, the MNs effectively perforated the skin and delivered drugs to subcutaneous tissue on contact with the interstitial fluid...
January 5, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29296482/in-vivo-studies-of-transdermal-nanoparticle-delivery-with-microneedles-using-photoacoustic-microscopy
#6
Mohesh Moothanchery, Razina Z Seeni, Chenjie Xu, Manojit Pramanik
Microneedle technology allows micron-sized conduits to be formed within the outermost skin layers for both localized and systemic delivery of therapeutics including nanoparticles. Histological methods are often employed for characterization, and unfortunately do not allow for the in vivo visualization of the delivery process. This study presents the utilization of optical resolution-photoacoustic microscopy to characterize the transdermal delivery of nanoparticles using microneedles. Specifically, we observe the in vivo transdermal delivery of gold nanoparticles using microneedles in mice ear and study the penetration, diffusion, and spatial distribution of the nanoparticles in the tissue...
December 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29273516/current-and-future-technological-advances-in-transdermal-gene-delivery
#7
Xianfeng Chen
Transdermal gene delivery holds significant advantages as it is able to minimize the problems of systemic administration such as enzymatic degradation, systemic toxicity, and poor delivery to target tissues. This technology has the potential to transform the treatment and prevention of a range of diseases. However, the skin poses a great barrier for gene delivery because of the "bricks-and-mortar" structure of the stratum corneum and the tight junctions between keratinocytes in the epidermis. This review systematically summarizes the typical physical and chemical approaches to overcome these barriers and facilitate gen delivery via skin for applications in vaccination, wound healing, skin cancers and skin diseases...
December 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29247316/development-of-transdermal-vitamin-d3-vd3-delivery-system-using-combinations-of-plga-nanoparticles-and-microneedles
#8
Hye-Gyeong Kim, Deborah L Gater, Yeu-Chun Kim
Although vitamin D3 (VD3), which is the main form of vitamin D, can be produced in human skin under the sunlight, vitamin D deficiency emerged as a major public health problem worldwide. Mainly, oral supplements or vitamin D-fortified foods are distributed to help supplementation of vitamin D. However, those oral methods are limitedly supplied in the Middle East countries, and oral absorption has low efficiency due to many barriers and various changes of conditions along the route. Then, it is recommended to take them every day in order to maintain the adequate serum level of vitamin D...
December 16, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29220333/feline-transdermal-formulation-considerations
#9
Lauren Eichstadt Forsythe
Transdermal delivery of drugs is comparatively new in feline patients. However, transdermal formulations can be a desirable option for treating feline patients that are not willing participants to medication administration. However, achieving drug penetration across the skin is not always easy, and there are a wide variety of variables that can further affect penetration. This, coupled with a lack of studies, make transdermal administration an unknown with regards to efficacy and safety for many drugs. This article focuses on drugs that are administered transdermally with the intent of producing systemic effects...
November 2017: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/29219057/formulation-optimization-and-in-vitro-and-in-vivo-evaluation-of-lornoxicam-ethosomal-gels-with-penetration-enhancers
#10
Keke Li, Shanshan Gao, Baocheng Tian, Yanan Shi, Qingzhi Lv, Jingtian Han
BACKGROUND: Ethosomes, a novel type of percutaneous drug delivery carrier with a lipid bilayer structure, penetrate the skin barrier due to their deformability and malleability, and presence of ethanol that fluidizes lipids in the skin. In order to further enhance the delivery of drugs through the skin, penetration enhancers are widely used. OBJECTIVE: The objective of this work was to develop an optimized formulation of lornoxicam ethosomal gels, investigate skin permeability with the addition of penetration enhancers, and evaluate the in vivo pharmacodynamics of these formulations...
December 7, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/29217184/formulation-of-novel-chitosan-guargum-based-hydrogels-for-sustained-drug-release-of-paracetamol
#11
Amtul Jamil Sami, Madeeha Khalid, Tahir Jamil, Saira Aftab, Sermad Ahmad Mangat, A R Shakoori, S Iqbal
The report presents the formulation of hydrogel based on biopolymers chitosan and guar gum after cross-linking for sustained release of a commonly used orally prescribed analgesic Paracetamol. The oral ingestion of Paracetamol is associated with complications of the gastric tract and liver metabolism that can be effectually avoided by using transdermal drug delivery systems. The formulated transdermal patch was characterized by physicochemical properties including swelling, bonding pattern (using FTIR Fourier Transform Infra-Red and Scanning Electron Microscopy SEM) and antimicrobial activity...
December 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29210562/methacrylate-stitched-%C3%AE-cyclodextrin-embedded-with-nanogold-nanotitania-a-skin-adhesive-device-for-enhanced-transdermal-drug-delivery
#12
Thayyath Sreenivasan Anirudhan, Syam S Nair, Athira V Sasidharan
Transdermal (TD) drug delivery is an attractive technique for drug delivery compared to oral and intravenous injection. However the permeation of drug molecules across the skin is difficult due to the presence of highly ordered lipid barrier. This investigation details the development of a novel TD system, which has the potential to simultaneously enhance the skin permeability and adhesion behavior. Ibuprofen (IP) was selected as model drug. The ability of gold nanoparticle (AuNP) and hydrophobic titanium nanotube (TNT) to enhance the skin permeability was explored...
December 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29210312/development-and-optimization-of-a-novel-drug-free-nanolipid-vesicular-system-for-treatment-of-osteoarthritis
#13
Mohamed S El Afify, Esmat A Zein El Dein, Bakheet E M Elsadek, Mostafa A Mohamed, Sanaa A El-Gizawy
Objective The goal of this study is to improve the transdermal delivery of phosphatidylcholine (PC) via constructing a novel nanolipid vesicular system (NLVS) with high level of permeability through the stratum corneum (SC). Significance In our study, a novel drug free NLVS was developed. The system depends on PC boundary cartilage lubrication to relieve osteoarthritic pain without developing gastrointestinal problems associated with anti-inflammatory drug. Materials and methods Full 23 factorial design is applied to optimize the quality of the prepared NLVS...
December 6, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29208271/dissolvable-layered-microneedles-with-core-shell-structures-for-transdermal-drug-delivery
#14
Qi Lei Wang, Xiao Peng Zhang, Bo Zhi Chen, Xin Dong Guo
Microneedle (MN) systems for painless transdermal drug delivery have been developed in the past few years to overcome the issues of hypodermic injections. This study introduces a novel dissolvable layered microneedle (LMN) with core-shell structure for efficient transdermal drug delivery. Fabricated by three-step-casting method, the LMNs encapsulated the drug into the HA layer as a "shell", which is supported by PVA layer as core and base. When the LMNs are inserted into the skin, the drug would be released immediately once the HA layer were separated or dissolved...
February 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29207551/hyaluronan-based-nanohydrogels-as-effective-carriers-for-transdermal-delivery-of-lipophilic-agents-towards-transdermal-drug-administration-in-neurological-disorders
#15
Seong Uk Son, Jae-Woo Lim, Taejoon Kang, Juyeon Jung, Eun-Kyung Lim
We suggest a convenient nanoemulsion fabrication method to create hyaluronan (HA)-based nanohydrogels for effective transdermal delivery. First, hyaluronan-conjugated dodecylamine (HA-Do) HA-based polymers to load the lipophilic agents were synthesized with hyaluronan (HA) and dodecylamine (Do) by varying the substitution ratio of Do to HA. The synthetic yield of HA-Do was more than 80% (HA-Do (A): 82.7 ± 4.7%, HA-Do (B): 87.1 ± 3.9% and HA-Do (C): 81.4 ± 4.5%). Subsequently, nanohydrogels were fabricated using the nanoemulsion method...
December 4, 2017: Nanomaterials
https://www.readbyqxmd.com/read/29203152/dissolving-polyvinylpyrrolidone-based-microneedle-systems-for-in-vitro-delivery-of-sumatriptan-succinate
#16
P Ronnander, L Simon, H Spilgies, A Koch, S Scherr
In-vitro permeation studies were conducted to assess the feasibility of fabricating dissolving-microneedle-array systems to release sumatriptan succinate. The formulations consisted mainly of the encapsulated active ingredient and a water-soluble biologically compatible polymer, polyvinylpyrrolidone (PVP), approved by the U.S. Food and Drug Administration (FDA). Tests with Franz-type diffusion cells and Göttingen minipig skins showed an increase of the transdermal flux compared to passive diffusion. A preparation, containing 30% by mass of PVP and 8...
December 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29202753/development-of-triptolide-nanoemulsion-gels-for-percutaneous-administration-physicochemical-transport-pharmacokinetic-and-pharmacodynamic-characteristics
#17
Meng Yang, Yongwei Gu, Dishun Yang, Xiaomeng Tang, Jiyong Liu
BACKGROUND: This work aimed to provide useful information on the use of nanoemulsions for the percutaneous administration of triptolide. Lipid nanosystems have great potential for transdermal drug delivery. Nanoemulsions and nanoemulsion gels were prepared to enhance percutaneous permeation. Microstructure and in vitro/in vivo percutaneous delivery characteristics of triptolide (TPL)-nanoemulsions and TPL-nanoemulsion gels were compared. The integrity of the nanoemulsions and nanoemulsion gels during transdermal delivery and its effects on the surface of skin were also investigated...
December 4, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29199589/nanostructured-lipid-carriers-a-new-paradigm-in-topical-delivery-for-dermal-and-transdermal-applications
#18
Gajanand Sharma, Kanika Thakur, Kaisar Raza, Bhupinder Singh, Om Parkash Katare
Topical drug delivery offers many advantages over oral delivery, such as avoidance of first-pass metabolism, targeting of the active ingredients for a local effect, and patient compliance. However, the achievement of dermal and transdermal delivery needs to conciliate difficulties in permeation across skin barrier at different levels (skin surface, epidermis, dermis, and hypodermis). Nanostructured lipid carriers (NLCs) are recently invented second-generation lipidic carriers. The present article intends to provide an insight of composition, production, and application of these carriers in topical delivery for local and systemic effects...
2017: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/29189185/enhanced-both-in-vitro-and-in-vivo-kinetics-by-slns-induced-transdermal-system-of-furosemide-a-novel-approach
#19
Revathi Mannam, Indira Muzib Yallamalli
AIM AND BACKGROUND: Furosemide is a potent diuretic agent used to treat pulmonary arterial hypertension. Variable dosage regimen and poor pharmacokinetic parameters has led to the development of transdermal drug delivery system. A patent on suitability of multi-lamellar structures for excellent transdermal delivery (US 0367475A1) has encouraged us to formulate the solid lipid nanoparticles (SLNs) induced transdermal systems of furosemide to enhance the kinetic properties without incorporating any penetration enhancer and rate limiting polymers...
November 28, 2017: Recent Patents on Drug Delivery & Formulation
https://www.readbyqxmd.com/read/29187457/transdermal-delivery-of-luteinizing-hormone-releasing-hormone-with-chitosan-microneedles-a-promising-tool-for-androgen-deprivation-therapy
#20
Ming-Yang Chen, Yi-Ying Chen, Hsin-Tzu Tsai, Tzong-Shin Tzai, Mei-Chin Chen, Yuh-Shyan Tsai
Long-term administration of luteinizing hormone-releasing hormone analogs (LHRHa) is the main type of androgen-deprivation therapy (ADT) for lethal prostate cancer. A fully insertable microneedle system, composed of embeddable chitosan microneedles and a dissolvable polyvinyl alcohol/polyvinyl pyrrolidone supporting array, was developed for sustained delivery of LHRHa to the skin. A porcine cadaver skin test showed that chitosan microneedles can be fully embedded within the skin and microneedle-created micropores reseal within 7 days...
December 2017: Anticancer Research
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