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https://www.readbyqxmd.com/read/28934172/topical-nano-and-microemulsions-for-skin-delivery
#1
REVIEW
Christofori M R R Nastiti, Thellie Ponto, Eman Abd, Jeffrey E Grice, Heather A E Benson, Michael S Roberts
Nanosystems such as microemulsions (ME) and nanoemulsions (NE) offer considerable opportunities for targeted drug delivery to and via the skin. ME and NE are stable colloidal systems composed of oil and water, stabilised by a mixture of surfactants and cosurfactants, that have received particular interest as topical skin delivery systems. There is considerable scope to manipulate the formulation components and characteristics to achieve optimal bioavailability and minimal skin irritancy. This includes the incorporation of established chemical penetration enhancers to fluidize the stratum corneum lipid bilayers, thus reducing the primary skin barrier and increasing permeation...
September 21, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28929244/analyzing-polymeric-matrix-for-fabrication-of-a-biodegradable-microneedle-array-to-enhance-transdermal-delivery
#2
Kuo-Yuan Hwa, Vincent H S Chang, Yao-Yi Cheng, Yue-Da Wang, Pey-Shynan Jan, Boopathi Subramani, Min-Ju Wu, Bo-Kai Wang
Traditional drug delivery systems, using invasive, transdermal, and oral routes, are limited by various factors, such as the digestive system environment, skin protection, and sensory nerve stimulation. To improve the drug delivery system, we fabricated a polysaccharide-based, dissolvable microneedle-based array, which combines the advantages of both invasive and transdermal delivery systems, and promises to be an innovative solution for minimally invasive drug delivery. In this study, we designed a reusable aluminum mold that greatly improved the efficiency and convenience of microneedle fabrication...
September 19, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28919029/recent-advances-of-controlled-drug-delivery-using-microfluidic-platforms
#3
REVIEW
Sharma T Sanjay, Wan Zhou, Maowei Dou, Hamed Tavakoli, Lei Ma, Feng Xu, XiuJun Li
Conventional systematically-administered drugs distribute evenly throughout the body, get degraded and excreted rapidly while crossing many biological barriers, leaving minimum amounts of the drugs at pathological sites. Controlled drug delivery aims to deliver drugs to the target sites at desired rates and time, thus enhancing the drug efficacy, pharmacokinetics, and bioavailability while maintaining minimal side effects. Due to a number of unique advantages of the recent microfluidic lab-on-a-chip technology, microfluidic lab-on-a-chip has provided unprecedented opportunities for controlled drug delivery...
September 15, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28917875/collagen-and-hyaluronic-acid-hydrogel-in-water-in-oil-microemulsion-delivery-systems
#4
Sylwia Kupper, Ilona Kłosowska-Chomiczewska, Patrycja Szumała
The increase in skin related health issues has promoted interest in research on the efficacy of microemulsion in dermal and transdermal delivery of active ingredients. Here, we assessed the water-in-oil microemulsion capacity to incorporate two natural polymers, i.e. collagen and hyaluronic acid with low and high molecular weight. Systems were extensively characterized in terms of conductivity, phase inversion studies, droplet diameter, polydispersity index and rheological properties. The results of this research indicate that the structure and extent of water phase in microemulsions is governed by ratio and amount of surfactant mixture (sorbitan ester derivatives)...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28894357/advances-in-the-delivery-of-buprenorphine-for-opioid-dependence
#5
REVIEW
Richard N Rosenthal, Viral V Goradia
Opioid use disorders (OUDs) have long been a global problem, but the prevalence rates have increased over 20 years to epidemic proportions in the US, with concomitant increases in morbidity and all-cause mortality, but especially opioid overdose. These increases are in part attributable to a several-fold expansion in the prescription of opioid pain medications over the same time period. Opioid detoxification and psychosocial treatments alone have each not yielded sufficient efficacy for OUD, but μ-opioid receptor agonist, partial agonist, and antagonist medications have demonstrated the greatest overall benefit in OUD treatment...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28867296/device-assisted-transdermal-drug-delivery
#6
Hyunjae Lee, Changyeong Song, Seungmin Baik, Dokyoon Kim, Taeghwan Hyeon, Dae-Hyeong Kim
Transdermal drug delivery is a prospective drug delivery strategy to complement the limitations of conventional drug delivery systems including oral and injectable methods. This delivery route allows both convenient and painless drug delivery and a sustained release profile with reduced side effects. However, physiological barriers in the skin undermine the delivery efficiency of conventional patches, limiting drug candidates to small-molecules and lipophilic drugs. Recently, transdermal drug delivery technology has advanced from unsophisticated methods simply relying on natural diffusion to drug releasing systems that dynamically respond to external stimuli...
September 1, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28860748/formulation-development-and-optimization-of-a-novel-octyldodecanol-based-nanoemulsion-for-transdermal-delivery-of-ceramide-iiib
#7
Runping Su, Li Yang, Yue Wang, Shanshan Yu, Yu Guo, Jiayu Deng, Qianqian Zhao, Xiangqun Jin
This research aimed to develop and optimize a nanoemulsion-based formulation containing ceramide IIIB using phase-inversion composition for transdermal delivery. The effects of ethanol, propylene glycol (PG), and glycerol in octyldodecanol and Tween 80 systems on the size of the nanoemulsion region in the phase diagrams were investigated using water titration. Subsequently, ceramide IIIB loading was kept constant (0.05 wt%), and the proposed formulation and conditions were optimized via preliminary screening and experimental design...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28858661/skin-permeability-and-transdermal-delivery-route-of-50-nm-indomethacin-loaded-plga-nanoparticles
#8
Issei Takeuchi, Takaaki Suzuki, Kimiko Makino
Recently, nano-seized systems for transdermal delivery have attracted attention. To efficiently deliver drugs to hair follicles, we focused on poly(DL-lactide-co-glycolide) (PLGA) nanoparticles prepared using a combination of an antisolvent diffusion method with preferential solvation. The PLGA nanoparticles prepared using this method are suitable for iontophoresis because of their high surface charge number density. It has been reported that PLGA nanoparticles were delivered to hair follicles by applying iontophoresis, however research on PLGA nanoparticles with a size of less than 100nm was lacking...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28854819/functionalized-nanostructures-for-transdermal-delivery-of-drug-cargos
#9
Rabia Gul, Naveed Ahmed, Kifayat Ullah Shah, Gul Majid Khan, Asim Ur Rehman
Nanotechnology has burgeoned over last decade exploring varieties of novel applications in all areas of science and technology. Utilization of bio-friendly polymers for engineering nanostructures (NS) improves safety and efficacy in drug delivery. Biopolymers not merely employed for fabricating drug carriers but also leveraged for surface functionalization of other NS to impart bio-mimicking properties. Biopolymer functionalized NS garnered researcher's attention because of their potential to enhance skin permeability of drug cargo...
August 31, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28844174/novel-reverse-electrodialysis-driven-iontophoretic-system-for-topical-and-transdermal-delivery-of-poorly-permeable-therapeutic-agents
#10
Ki-Taek Kim, Joon Lee, Min-Hwan Kim, Ju-Hwan Park, Jae-Young Lee, Joo-Hyun Song, Minwoong Jung, Myoung-Hoon Jang, Hyun-Jong Cho, In-Soo Yoon, Dae-Duk Kim
Topical and transdermal drug delivery has great potential in non-invasive and non-oral administration of poorly bioavailable therapeutic agents. However, due to the barrier function of the stratum corneum, the drugs that can be clinically feasible candidates for topical and transdermal delivery have been limited to small-sized lipophilic molecules. Previously, we fabricated a novel iontophoretic system using reverse electrodialysis (RED) technology (RED system). However, no study has demonstrated its utility in topical and/or transdermal delivery of poorly permeable therapeutic agents...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28830782/mechanism-study-on-ion-pair-complexes-controlling-skin-permeability-effect-of-ion-pair-dissociation-in-the-viable-epidermis-on-transdermal-permeation-of-bisoprolol
#11
Hanqing Zhao, Chao Liu, Peng Quan, Xiaocao Wan, Meiyue Shen, Liang Fang
Though ion-pair strategy has been widely used in transdermal drug delivery system, knowledge about the molecular mechanisms involved in the skin permeation processes of ion-pair complexes is still limited. In the present study, a homologous series of fatty acids were chosen to form model ion-pair complexes with bisoprolol (BSP) to rule out the influence of functional groups on polar surface area, stability and other physicochemical properties of ion-pair complexes. The ion-pair complexes were characterized by FTIR, thermal analysis, and (1)H NMR...
August 19, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28828592/drug-delivery-for-the-treatment-of-endometriosis-and-uterine-fibroids
#12
REVIEW
David R Friend
Endometriosis and uterine fibroids (also known as uterine leiomyomas) are serious medical conditions affecting large numbers of women worldwide. Many women are asymptomatic but those with symptoms require medical intervention to relieve chronic pain and dysmenorrhea and to address infertility. Drug delivery has played a role in reducing some of the symptoms associated with endometriosis and uterine fibroids. Use of drug delivery systems for both conditions can roughly be divided into two categories: (1) existing systems designed for other indications such as contraception for symptomatic relief and (2) development of novel systems aimed at addressing some of the underlying biochemical changes associated with endometriosis and uterine fibroids such as oxidative stress, angiogenesis, and matrix degradation...
August 21, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28826880/dissolving-microneedles-integrated-with-liquid-crystals-facilitate-transdermal-delivery-of-sinomenine-hydrochloride
#13
Zhiping Gui, Xingxing Wu, Shuyan Wang, Yingji Cao, Jun Wan, Qianqian Shan, Zhuanzhuan Yang, Jiwen Zhang, Shuangying Gui
The purpose of this study was to investigate the feasibility of delivering sinomenine hydrochloride (SH) transdermally using a composite dissolving microneedles (DM) which integrated with liquid crystals (H2). The fabricated SH-loaded composite DM was evaluated for their appearance, mechanical strength, irritation, efficiency of transdermal delivery of SH. Results depicted that optimized SH-loaded composite DM had sufficient mechanical strength to pierce into rat skin. The in vitro permeability study in rat skin was successfully performed using Franz diffusion cell which showed that the cumulative permeation of SH in the composite DM were significantly increased compared with H2 group (P<0...
August 18, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28826275/carboxylated-phytosterol-derivative-introduced-liposomes-for-skin-environment-responsive-transdermal-drug-delivery-system
#14
Naoko Yamazaki, Satoshi Yamakawa, Takumi Sugimoto, Yuta Yoshizaki, Ryoma Teranishi, Takaaki Hayashi, Aki Kotaka, Chiharu Shinde, Takayuki Kumei, Yasushi Sumida, Toru Shimizu, Yukihiro Ohashi, Eiji Yuba, Atsushi Harada, Kenji Kono
Transdermal drug delivery systems are a key technology for skin-related diseases and for cosmetics development. The delivery of active ingredients to an appropriate site or target cells can greatly improve the efficacy of medical and cosmetic agents. For this study, liposome-based transdermal delivery systems were developed using pH-responsive phytosterol derivatives as liposome components. Succinylated phytosterol (Suc-PS) and 2-carboxy-cyclohexane-1-carboxylated phytosterol (CHex-PS) were synthesized by esterification of hydroxy groups of phytosterol...
August 21, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28780407/microneedles-for-enhanced-transdermal-and-intraocular-drug-delivery
#15
REVIEW
Kurtis Moffatt, Yujing Wang, Thakur Raghu Raj Singh, Ryan F Donnelly
Microneedle mediated delivery based research has garnered great interest in recent years. In the past, the initial focus was delivery of macromolecules of biological origin, however the field has now broadened its scope to include transdermal delivery of conventional low molecular weight drug molecules. Great success has been demonstrated utilising this approach, particularly in the field of vaccine delivery. Current technological advances have permitted an enhancement in design formulation, allowing delivery of therapeutic doses of small molecule drugs and biomolecules, aided by larger patch sizes and scalable manufacture...
August 3, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28777967/optimal-routes-of-administration-vehicles-and-timing-of-progesterone-treatment-for-inhibition-of-delivery-during-pregnancy
#16
Dajun Fang, Mario Moreno, Robert E Garfield, Ruben Kuon, Huimin Xia
OBJECTIVES: Progestins, notably progesterone (P4) and 17 alpha hydroxyprogesterone caproate, are presently used to treat pregnant women at risk of preterm birth. The aim of this study was to assess the optimal treatment options for progesterone (P4) to delay delivery using a sensitive bioassay for progesterone. STUDY DESIGN: Pregnant rats, known to be highly sensitive to progestins, were treated with P4, including Prochieve(®) (also known as Crinone(®)), in various vehicles from day 13 of gestation and in late gestation, days 19 to 22, and delivery times noted...
September 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28761825/gellified-emulsion-of-ofloxacin-for-transdermal-drug-delivery-system
#17
Swati Jagdale, Saylee Pawar
Purpose: Ofloxacin is a fluoroquinolone with broad-spectrum antibacterial action, used in treatment of systemic and local infections. Ofloxacin is BCS class II drug having low solubility, high permeability with short half-life. The present work was aimed to design, develop and optimize gellified emulsion of Ofloxacin to provide site targeted drug delivery. Transdermal drug delivery will enhance the bioavailability of the drug giving controlled drug release. Methods: Transdermal drug delivery system was designed with gelling agent (Carbopol 940 and HPMC K100M), oil phase (oleic acid) and emulsifying agent (Tween 80: Span 80)...
June 2017: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28761343/elastic-liposomes-as-novel-carriers-recent-advances-in-drug-delivery
#18
REVIEW
Afzal Hussain, Sima Singh, Dinesh Sharma, Thomas J Webster, Kausar Shafaat, Abdul Faruk
Elastic liposomes (EL) are some of the most versatile deformable vesicular carriers that comprise physiologically biocompatible lipids and surfactants for the delivery of numerous challenging molecules and have marked advantages over other colloidal systems. They have been investigated for a wide range of applications in pharmaceutical technology through topical, transdermal, nasal, and oral routes for efficient and effective drug delivery. Increased drug encapsulation efficiency, enhanced drug permeation and penetration into or across the skin, and ultradeformability have led to widespread interest in ELs to modulate drug release, permeation, and drug action more efficiently than conventional drug-release vehicles...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28739792/transfersomal-phage-cocktail-an-effective-treatment-against-methicillin-resistant-s-aureus-mrsa-mediated-skin-and-soft-tissue-infections-sstis
#19
Sanjay Chhibber, Ashu Shukla, Sandeep Kaur
Emergence of drug resistance has rekindled the interest in phage therapy as an alternative treatment option. Its potency, safety and proven efficacy is worth noting. However, phage therapy still suffers from issues of poor stability, narrow spectrum and poor pharmacokinetic profile. It therefore becomes essential to look into the use of Drug Delivery Systems (DDS) for efficient delivery of lytic phages in vivo For the first time, the present study has evaluated the use of nano-structured lipid based carriers i...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28739503/improved-transdermal-delivery-of-morin-efficiently-inhibits-allergic-contact-dermatitis
#20
Jiao Yu, Kawai Wan, Xun Sun
The skin is an important site for local or systemic application of drugs. However, most of the drugs have poor permeability through the skin's outermost layer, stratum corneum. The aim of this study was to develop a method to enable transdermal delivery of morin (3, 5, 7, 2, 4-pentahydroxyflavone), which is a poorly water-soluble drug with anti-inflammatory properties obtained from natural products. Morin phospholipid complex (MPC) was prepared and then loaded in Carbopol 940 hydrogel (MPC-gel), which can significantly increase the transdermal flux of morin based on the in vitro skin penetration data presented in this paper...
July 21, 2017: International Journal of Pharmaceutics
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