scholarly journals Temporal pressure enhanced topical drug delivery through micropore formation

2020 ◽  
Vol 6 (22) ◽  
pp. eaaz6919
Author(s):  
Daniel Chin Shiuan Lio ◽  
Rui Ning Chia ◽  
Milton Sheng Yi Kwek ◽  
Christian Wiraja ◽  
Leigh Edward Madden ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Skin Barrier ◽  
Pressure Treatment ◽  
Topical Drug Delivery ◽  
Chemical Enhancers ◽  
Innovative Methodology ◽  
Sophisticated Equipment ◽  
Elevated Expression ◽  
Temporal Pressure ◽  
High Doses

Transdermal drug delivery uses chemical, physical, or biochemical enhancers to cross the skin barrier. However, existing platforms require high doses of chemical enhancers or sophisticated equipment, use fragile biomolecules, or are limited to a certain type of drug. Here, we report an innovative methodology based on temporal pressure to enhance the penetration of all kinds of drugs, from small molecules to proteins and nanoparticles (up to 500 nm). The creation of micropores (~3 μm2) on the epidermal layer through a temporal pressure treatment results in the elevated expression of gap junctions, and reduced expression of occludin tight junctions. A 1 min treatment of 0.28-MPa allows nanoparticles (up to 500 nm) and macromolecules (up to 20 kDa) to reach a depth of 430-μm into the dermal layer. Using, as an example, the delivery of insulin through topical application after the pressure treatment yields up to 80% drop in blood glucose in diabetic mice.

Limitations and Opportunities in Topical Drug Delivery: Interaction Between Silica Nanoparticles and Skin Barrier

2019 ◽  
Vol 25 (4) ◽  
pp. 455-466 ◽  
Author(s):  
Francisco Arriagada ◽  
Javier Morales
Keyword(s):  
Drug Delivery ◽  
Adverse Effects ◽  
Silica Nanoparticles ◽  
Skin Barrier ◽  
Skin Penetration ◽  
Bioactive Compound ◽  
Penetration Enhancers ◽  
Topical Drug Delivery ◽  
Skin Delivery ◽  
The Stability

The first limiting barrier for the transport in the skin is the stratum corneum; different strategies have been developed to overcome this barrier, including chemical enhancers. However, these penetration enhancers have limitations, including toxic adverse effects. In this context, research into nanomaterials has provided new tools to increase the residence time of drugs by generating a reservoir, increasing the specificity of drugs and reducing their adverse effects, and improving the penetration of drugs that are difficult to formulate. Silica nanoparticles have been proposed as suitable nanocarriers for skin delivery. Unfortunately, the mechanisms involved in the interaction, transport and fate of silica nanoparticles in the skin have not been fully investigated. This paper reviews significant findings about the interaction between silica-based nanocarriers and the skin. First, this review focuses on the properties and functions of the skin, the skin penetration properties of silica nanoparticles, their synthesis strategies and their toxicity. Finally, advances and evidence on the application of silica nanocarriers in skin drug delivery are provided, in which the use of nanoparticles increases the stability and solubility of the bioactive compound, enhancing its performance, act as penetrator enhancer and improving controlled release. Thus, improving the treatment of some skin disorders.

The factors determining the skin penetration and cellular uptake of nanocarriers: New hope for clinical development

2021 ◽  
Vol 27 ◽  
Author(s):  
Afsaneh Farjami ◽  
Sara Salatin ◽  
Samira Jafari ◽  
Mohammad Mahmoudian ◽  
Mitra Jelvehgari
Keyword(s):  
Drug Delivery ◽  
Skin Permeation ◽  
Direct Interaction ◽  
Skin Barrier ◽  
Skin Penetration ◽  
Physicochemical Characteristics ◽  
Skin Permeability ◽  
Topical Drug Delivery ◽  
Major Barrier ◽  
Composition And Structure

: The skin provides a protective barrier against toxic environments and also offers a valuable route for topical drug delivery. The stratum corneum (SC) is the outermost layer of the skin and serves as the major barrier to chemical transfer through the skin. The human skin barrier is particularly diffcult to overcome because of the complex composition and structure of the SC. Nanoparticulate carriers have gained widespread attention in topical drug delivery due to their tunable and versatile properties. The present review summarizes the main factors involved in the skin penetration of nanocarriers containing drug. Employment of nanotechnology in topical delivery has grown progressively during recent years; however, it is important to monitor the skin penetration of nanocarriers prior to their use due to avoid possible toxic effects. Nanocarriers can act as a means to increase the skin permeation of drugs by supporting a direct interaction with the SC and increasing the period of permanence on the skin. The skin penetration is influenced by the physicochemical characteristics of nanocarriers such as composition, size, shape, surface chemistry as well as skin features. Considering that the target of topical systems based on nanocarriers is the penetration of therapeutic agents in the skin layers, so a detailed understanding of the factors influencing skin permeability of nanocarriers is essential for safe and efficient therapeutic applications.

scholarly journals A systematic review of carbohydrate-based microneedles: current status and future prospects

2021 ◽  
Vol 32 (8) ◽  
Author(s):  
Rupali S. Bhadale ◽  
Vaishali Y. Londhe
Keyword(s):  
Mechanical Properties ◽  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Skin Barrier ◽  
Current Status ◽  
Pharmacological Effects ◽  
Topical Drug Delivery ◽  
Future Prospects ◽  
Regulatory Requirements ◽  
New Class

AbstractMicroneedles (MNs) are minimally invasive tridimensional biomedical devices that bypass the skin barrier resulting in systemic and localized pharmacological effects. Historically, biomaterials such as carbohydrates, due to their physicochemical properties, have been used widely to fabricate MNs. Owing to their broad spectrum of functional groups, carbohydrates permit designing and engineering with tunable properties and functionalities. This has led the carbohydrate-based microarrays possessing the great potential to take a futuristic step in detecting, drug delivery, and retorting to biologicals. In this review, the crucial and extensive summary of carbohydrates such as hyaluronic acid, chitin, chitosan, chondroitin sulfate, cellulose, and starch has been discussed systematically, using PRISMA guidelines. It also discusses different approaches for drug delivery and the mechanical properties of biomaterial-based MNs, till date, progress has been achieved in clinical translation of carbohydrate-based MNs, and regulatory requirements for their commercialization. In conclusion, it describes a brief perspective on the future prospects of carbohydrate-based MNs referred to as the new class of topical drug delivery systems.

Dodecyl Amino Glucoside Enhances Transdermal and Topical Drug Delivery via Reversible Interaction with Skin Barrier Lipids

2017 ◽  
Vol 34 (3) ◽  
pp. 640-653 ◽  
Author(s):  
Monika Kopečná ◽  
Miloslav Macháček ◽  
Eva Prchalová ◽  
Petr Štěpánek ◽  
Pavel Drašar ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Skin Barrier ◽  
Topical Drug Delivery

Applications of Extremophilic Archaeal Lipids in the Field of Nanocarriers for Oral/Topical Drug Delivery

2013 ◽  
Vol 2 (4) ◽  
pp. 294-303 ◽  
Author(s):  
Thierry Benvegnu ◽  
Loïc Lemiègre ◽  
Sylvain Dalençon ◽  
Jelena Jeftić
Keyword(s):  
Drug Delivery ◽  
Topical Drug Delivery ◽  
Archaeal Lipids

scholarly journals Advances in Nano-Enabled Platforms for the Treatment of Depression

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1431
Author(s):  
Fadzai P. Mutingwende ◽  
Pierre P. D. Kondiah ◽  
Philemon Ubanako ◽  
Thashree Marimuthu ◽  
Yahya E. Choonara
Keyword(s):  
Drug Delivery ◽  
Drug Toxicity ◽  
Common Mental Disorder ◽  
Antidepressant Drug ◽  
Chemical Properties ◽  
Controlled Drug Release ◽  
Routes Of Administration ◽  
Antidepressant Efficacy ◽  
High Doses ◽  
The Brain

Nanotechnology has aided in the advancement of drug delivery for the treatment of several neurological disorders including depression. Depression is a relatively common mental disorder which is characterized by a severe imbalance of neurotransmitters. Several current therapeutic regimens against depression display drawbacks which include low bioavailability, delayed therapeutic outcome, undesirable side effects and drug toxicity due to high doses. The blood–brain barrier limits the entry of the drugs into the brain matrix, resulting in low bioavailability and tissue damage due to drug accumulation. Due to their size and physico-chemical properties, nanotechnological drug delivery systems present a promising strategy to enhance the delivery of nanomedicines into the brain matrix, thereby improving bioavailability and limiting toxicity. Furthermore, ligand-complexed nanocarriers can improve drug specificity and antidepressant efficacy and reduce drug toxicity. Biopolymers and nanocarriers can also be employed to enhance controlled drug release and reduce the hepatic first-pass effect, hence reducing the dosing frequency. This manuscript reviews recent advances in different biopolymers, such as polysaccharides and other nanocarriers, for targeted antidepressant drug delivery to the brain. It probes nano-based strategies that can be employed to enhance the therapeutic efficacy of antidepressants through the oral, intranasal, and parenteral routes of administration.

Topical drug delivery and nanotechnology

2013 ◽  
Vol 197 (3) ◽  
pp. 519-520
Author(s):  
Paul Mills
Keyword(s):  
Drug Delivery ◽  
Topical Drug Delivery

Continuous topical drug delivery using osmotic pump in animal cochlear implant model: Continuous steroid delivery is effective for hearing preservation

2015 ◽  
Vol 135 (8) ◽  
pp. 791-798 ◽  
Author(s):  
Min Young Lee ◽  
Jun Ho Lee ◽  
Ho Sun Lee ◽  
Jun-Jae Choi ◽  
Jongmoon Jang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cochlear Implant ◽  
Hearing Preservation ◽  
Osmotic Pump ◽  
Topical Drug Delivery

Recent Applications of Nanoemulsion Based Drug Delivery System: A Review

2021 ◽  
pp. 2852-2858
Author(s):  
Asif Eqbal ◽  
Vaseem Ahamad Ansari ◽  
Abdul Hafeez ◽  
Farogh Ahsan ◽  
Mohd Imran ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Transdermal Drug Delivery ◽  
Therapeutic Agents ◽  
Topical Drug Delivery ◽  
Transdermal Drug Delivery System ◽  
Small Droplet ◽  
Pharmaceutical Application ◽  
System A

Nanoemulsions are drug transporters for the delivery of therapeutic agents. They possess the small droplet size having the range of 20×10-9-200×10-9m. The main purpose of using Nanoemulsion is to enhance the drug bio- availability of transdermal drug delivery system. With the help of phase diagram, we can select the components of nanoemulsion depending upon formulas ratio of oil phase, surfactant/co-surfactant and water phase. Nanoemulsion directly used as a topical drug delivery in skin organs. The most useable pharmaceutical application has been developed till date to provide systemic effects to penetrating the full thickness of skin organ layer nanoemulsions can be administered through variety of routes such as percutaneous, perioral, topical, transdermal, ocular and parental administration of medicaments. Nanoemulsions are transparent and slightly opalescent. Nanoemulsion can be prepared through various methods. Nanoemulsions are transparent and slightly opalescent. Factor affecting nanoemulsions are surfactant, viscosity, lipophilic, drug content, pH, concentration of each component, and methodology of formulation. It is unfeasible to test all factors at the various levels. Design of formulation when it comes to experimental design it gives an excellent approach through reducing the time and money.

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