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transdermal delivery system

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https://www.readbyqxmd.com/read/28631206/diclofenac-loaded-lipid-nanovesicles-prepared-by-double-solvent-displacement-for-skin-drug-delivery
#1
M Sala, F Locher, M Bonvallet, G Agusti, A Elaissari, H Fessi
PURPOSE: Herein, we detail a promising strategy of nanovesicle preparation based on control of phospholipid self-assembly: the Double Solvent Displacement. A systematic study was conducted and diclofenac as drug model encapsulated. In vitro skin studies were carried out to identify better formulation for dermal/transdermal delivery. METHODS: This method consists in two solvent displacements. The first one, made in a free water environment, has allowed triggering a phospholipid pre-organization...
June 19, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28620730/advances-towards-painless-vaccination-and-newer-modes-of-vaccine-delivery
#2
Neha Garg, Anju Aggarwal
Vaccines have been successful in reducing the mortality and morbidity, but most of them are delivered by intramuscular or intravenous route. They are associated with pain to the baby and bring lot of anxiety for the parents. There has been a marked increase in the number of injections required in first two years of life for completing the vaccination schedule. Hence, there is a need to have a painless vaccine delivery system. Numerous new routes of vaccination like, oral, nasal and transdermal routes are being tried...
June 16, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28610893/an-insight-into-the-molecular-mechanism-of-the-temporary-enhancement-effect-of-isopulegol-decanoate-on-the-skin
#3
Xiaochang Liu, Meiying Liu, Chao Liu, Peng Quan, Yongshan Zhao, Liang Fang
Chemical enhancers are widely used to facilitate drug permeation in transdermal drug delivery system (TDDS) and the effect of chemical enhancers is desired to be temporary. Though temporary enhancement effect of chemical enhancers has been widely discussed, there is still a lack of knowledge about the molecular mechanism of temporary enhancement effect. Using the skin permeation of flurbiprofen as a probe, the temporary enhancement effect of isopulegol decanoate (ISO-10) was evaluated with in vitro permeation experiment and confocal laser scanning microscopy (CLSM)...
June 10, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28608140/on-the-road-to-development-of-an-in-vitro-permeation-test-ivpt-model-to-compare-heat-effects-on-transdermal-delivery-systems-exploratory-studies-with-nicotine-and-fentanyl
#4
Soo Hyeon Shin, Priyanka Ghosh, Bryan Newman, Dana C Hammell, Sam G Raney, Hazem E Hassan, Audra L Stinchcomb
PURPOSE: At elevated temperatures, the rate of drug release and skin permeation from transdermal delivery systems (TDS) may be higher than at a normal skin temperature. The aim of this study was to compare the effect of heat on the transdermal delivery of two model drugs, nicotine and fentanyl, from matrix-type TDSs with different formulations, using in vitro permeation tests (IVPT). METHODS: IVPT experiments using pig skin were performed on two nicotine and three fentanyl TDSs...
June 12, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28600224/enhancement-of-transdermal-protein-delivery-by-photothermal-effect-of-gold-nanorods-coated-on-polysaccharide-based-hydrogel
#5
Aung Thu Haine, Yuki Koga, Yuta Hashimoto, Taishi Higashi, Keiichi Motoyama, Hidetoshi Arima, Takuro Niidome
Transdermal protein delivery is a useful and attractive method for protein therapy and dermal vaccination. However, this delivery method is restricted by the low permeability of the stratum corneum. The purpose of this study was to develop a transdermal delivery system for enhancement of protein permeability into the skin. First, we prepared a transparent gel patch made of polysaccharides with gold nanorods on the gel surface and fluorescein isothiocyanate-modified ovalbumin (FITC-OVA) inside. Next, the gel patch was placed on mouse skin to allow contact with the coated gold nanorods, and irradiated by a continuous-wave laser...
June 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28576549/computational-and-experimental-model-of-transdermal-iontophorethic-drug-delivery-system
#6
Nenad Filipovic, Igor Saveljic, Vladislav Rac, Beatriz Olalde Graells, Goran Bijelic
The concept of iontophoresis is often applied to increase the transdermal transport of drugs and other bioactive agents into the skin or other tissues. It is a non-invasive drug delivery method which involves electromigration and electroosmosis in addition to diffusion and is shown to be a viable alternative to conventional administration routs such as oral, hypodermic and intravenous injection. In this study we investigated, experimentally and numerically, in vitro drug delivery of dexamethasone sodium phosphate to porcine skin...
May 31, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28574158/efficacy-and-safety-of-a-new-microneedle-patch-for-skin-brightening-a-randomized-split-face-single-blind-study
#7
Kui Young Park, Hyun Jung Kwon, Changjin Lee, Daegun Kim, Jun Jin Yoon, Myeong Nam Kim, Beom Joon Kim
BACKGROUND: Although microneedles are one of the best transdermal drug delivery systems for active compounds, few clinical trials have examined the safety and efficacy of brightening microneedle patches. AIMS: To determine the efficacy and safety of a newly developed whitening microneedle patch. PATIENTS/METHODS: A split-face study was designed for efficacy assessment with 34 Korean women applying the tested product (a whitening microneedle patch) on one cheek and a control whitening essence on the other...
June 2, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28571549/nanoemulsion-based-transdermal-drug-delivery-system-for-the-treatment-of-tuberculosis
#8
Mohammad Wais, Mohd Aqil, Ashish Kumar Sharma, Jaya Agnihotri
BACKGROUND: The nanoemulsion based carriers are the most suitable delivery systems for poorly soluble drugs to improve the solubility of drugs, permeation of drugs and ultimately increase bioavailability by transdermal therapeutic system. The nanoemulsion for poorly soluble drugs is the excellent and offered several advantages over others carriers. METHODS: For the nanoemulsions formulation they have to deliver the energetic element at the specific organ with nominal uneasiness...
June 1, 2017: Recent Patents on Anti-infective Drug Discovery
https://www.readbyqxmd.com/read/28546106/enhanced-dissolution-and-skin-permeation-profiles-of-epalrestat-with-%C3%AE-cyclodextrin-derivatives-using-a-cogrinding-method
#9
Takayuki Furuishi, Shoma Takahashi, Noriko Ogawa, Mihoko Gunji, Hiromasa Nagase, Toyofumi Suzuki, Tomohiro Endo, Haruhisa Ueda, Etsuo Yonemochi, Kazuo Tomono
Epalrestat (EPL) is a water-insoluble drug (14μM) that inhibits aldose reductase. This study investigated the interactions between β-cyclodextrin (CD) derivatives and EPL to determine the solubilizing effect on EPL from phase solubility diagrams. We improved the solubility of EPL in water by adding β-CD derivatives. Moreover, the solubility of EPL mixed with β-CD derivatives by cogrinding in a ball mill method was about 2-3 times higher than those of EPL with the same CD concentration (5mM) calculated from phase solubility diagrams...
May 22, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28544329/dissolving-microneedle-arrays-for-transdermal-delivery-of-amphiphilic-vaccines
#10
Myunggi An, Haipeng Liu
Amphiphilic vaccine based on lipid-polymer conjugates is a new type of vaccine capable of self-delivering to the immune system. When injected subcutaneously, amphiphilic vaccines efficiently target antigen presenting cells in the lymph nodes (LNs) via a unique albumin-mediated transport and uptake mechanism and induce potent humoral and cellular immune responses. However, whether this new type of vaccine can be administrated via a safe, convenient microneedle-based transdermal approach remains unstudied. For such skin barrier-disruption systems, a simple application of microneedle arrays (MNs) is desired to disrupt the stratum corneum, and for rapid and pain-free self-administration of vaccines into the skin, the anatomic place permeates with an intricate mesh of lymphatic vessels draining to LNs...
May 19, 2017: Small
https://www.readbyqxmd.com/read/28535740/etodolac-transdermal-cubosomes-for-the-treatment-of-rheumatoid-arthritis-ex-vivo-permeation-and-in-vivo-pharmacokinetic-studies
#11
Salwa Salah, Azza A Mahmoud, Amany O Kamel
In this study, transdermal etodolac-loaded cubosomes were developed in order to relieve patient pain and joints stiffness by providing stable etodolac concentration at the targeting sites through controlled drug delivery via the noninvasive skin route with more sustaining and less frequent dosing. Different ratios and percentages of poloxamer 407 and monoolein were used to formulate the cubosomes using emulsification and homogenization processes. The etodolac-loaded cubosomes showed particle size values ranging from 135...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28494734/recent-advances-in-skin-penetration-enhancers-for-transdermal-gene-and-drug-delivery
#12
Morteza Amjadi, Babak Mostaghaci, Metin Sitti
There is a growing interest in transdermal delivery systems because of their noninvasive, targeted, and on-demand delivery of gene and drugs. However, efficient penetration of therapeutic compounds into the skin is still challenging largely due to the impermeability of the outermost layer of the skin, known as stratum corneum. Recently, there have been major research activities to enhance the skin penetration depth of pharmacological agents. This article reviews recent advances in the development of various strategies for skin penetration enhancement...
May 10, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/28493100/characterization-of-temperature-profiles-in-skin-and-transdermal-delivery-system-when-exposed-to-temperature-gradients-in-vivo-and-in-vitro
#13
Qian Zhang, Michael Murawsky, Terri LaCount, Jinsong Hao, Gerald B Kasting, Bryan Newman, Priyanka Ghosh, Sam G Raney, S Kevin Li
PURPOSE: Performance of a transdermal delivery system (TDS) can be affected by exposure to elevated temperature, which can lead to unintended safety issues. This study investigated TDS and skin temperatures and their relationship in vivo, characterized the effective thermal resistance of skin, and identified the in vitro diffusion cell conditions that would correlate with in vivo observations. METHODS: Experiments were performed in humans and in Franz diffusion cells with human cadaver skin to record skin and TDS temperatures at room temperature and with exposure to a heat flux...
May 10, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28486181/anti-tumor-efficacy-of-an-integrated-methyl-dihydrojasmonate-transdermal-microemulsion-system-targeting-breast-cancer-cells-in-vitro-and-in-vivo-studies
#14
Rania Yehia, Rania M Hathout, Dalia A Attia, Mohamed M Elmazar, Nahed D Mortada
Targeting solid tumors transdermally is an emerging approach that is currently under intense investigation. In this context, microemulsions are reported as one of the most favored carriers for successful transdermal drug delivery. Thereby, these nano-carriers were utilized in this study for the delivery of a phytochemical, namely methyl dihydrojasmonate (MDHJ), which has previously demonstrated an anticancer effect. Accordingly, pseudoternary phase diagrams were constructed using several combinations of oils, surfactants and co-surfactants and following the water titration method...
April 23, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28482667/granisetron-transdermal-delivery-system-is-effective-in-the-control-of-chemotherapy-induced-nausea-and-vomiting-in-patients-receiving-moderately-emetogenic-chemotherapy-mec-or-highly-emetogenic-chemotherapy-hec-in-china
#15
https://www.readbyqxmd.com/read/28482575/risedronate-transdermal-delivery-system-based-on-a-fumaric-copolymer-for-therapy-of-osteoporosis
#16
Magalí Pasqualone, Héctor A Andreetta, M Susana Cortizo
Transdermal drug delivery system (TDDS) could be seen as alternative to the oral administration which avoids several adverse effects. In this study a novel TDDS for risedronate (RI), a bisphosphonate used for osteoporosis treatment, based on a vinyl acetate-dioctylfumarate copolymer, poly(VA-co-DOF), previously synthetized, was developed. Two membranes including 6 and 12% (w/w) of drug were obtained, which exhibited good transparence and homogeneous drug distribution, as evaluated by optical microscopy. FTIR spectroscopy and differential scanning calorimetry (DSC) analysis showed no significant drug/polymer interactions, only a plasticizer effect...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28482547/development-and-in-vitro-evaluation-of-potential-electromodulated-transdermal-drug-delivery-systems-based-on-carbon-nanotube-buckypapers
#17
Alex Schwengber, Héctor J Prado, Pablo R Bonelli, Ana L Cukierman
Buckypapers based on different types of carbon nanotubes with and without the addition of four model drugs, two of basic nature (clonidine hydrochloride, selegiline hydrochloride) and the others of acidic character (flurbiprofen, ketorolac tromethamine) were prepared and characterized. The influence of the conditions employed in the preparation of the buckypapers (dispersion time and solvents used in the preparation, as well as the type of carbon nanotubes used and the characteristics of the drug involved) on their conductivity was especially examined...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28480438/preparation-and-properties-of-compound-arnebiae-radix-microemulsion-gel
#18
Jing Chen, Yanping He, Ting Gao, Licheng Zhang, Yuna Zhao
BACKGROUND: Compound Arnebiae radix oil has been clinically applied to treat burns and scalds for a long time. However, it is unstable and inconvenient to use. The aim of this study was to prepare a compound Arnebiae radix microemulsion gel for transdermal delivery system and evaluate its characteristics. MATERIALS AND METHODS: Based on the solubility of Shikonin, the active component of Arnebiae radix and the results of phase studies, adequate ratio of each component in microemulsion was determined...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28480080/deformable-nanovesicles-synthesized-through-an-adaptable-microfluidic-platform-for-enhanced-localized-transdermal-drug-delivery
#19
Naren Subbiah, Jesus Campagna, Patricia Spilman, Mohammad Parvez Alam, Shivani Sharma, Akishige Hokugo, Ichiro Nishimura, Varghese John
Phospholipid-based deformable nanovesicles (DNVs) that have flexibility in shape offer an adaptable and facile method to encapsulate diverse classes of therapeutics and facilitate localized transdermal delivery while minimizing systemic exposure. Here we report the use of a microfluidic reactor for the synthesis of DNVs and show that alteration of input parameters such as flow speeds as well as molar and flow rate ratios increases entrapment efficiency of drugs and allows fine-tuning of DNV size, elasticity, and surface charge...
2017: Journal of Drug Delivery
https://www.readbyqxmd.com/read/28470586/advanced-analgesic-drug-delivery-and-nanobiotechnology
#20
REVIEW
Nicoleta Stoicea, Juan Fiorda-Diaz, Nicholas Joseph, Muhammad Shabsigh, Carlos Arias-Morales, Alicia A Gonzalez-Zacarias, Ana Mavarez-Martinez, Stephen Marjoribanks, Sergio D Bergese
Transdermal administration of analgesic medications offers several benefits over alternative routes of administration, including a decreased systemic drug load with fewer side effects, and avoidance of drug degradation by the gastrointestinal tract. Transdermal administration also offers a convenient mode of drug administration over an extended period of time, particularly desirable in pain medicine. A transdermal administration route may also offer increased safety for drugs with a narrow therapeutic window...
May 3, 2017: Drugs
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