Nanostructured Metal Films Formed onto Porous Silicon Template

2016 ◽  
Vol 39 ◽  
pp. 235-255
Author(s):  
Hanna Bandarenka ◽  
Alexei Dolgiy ◽  
Eugene Chubenko ◽  
Sergei Redko ◽  
Kseniya Girel ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Porous Silicon ◽  
Transdermal Drug Delivery ◽  
Research Work ◽  
Metal Films ◽  
Morphological Pattern ◽  
Mechanical And Electrical Properties ◽  
Different Types ◽  
Review Reports ◽  
Nanostructured Metal

The review reports on the results of our research work on nanostructured metal films onto porous silicon. Principal steps of the techniques allowing fabrication of metal films completely inheriting morphological pattern of different types of porous silicon are presented. It is shown, that giving of the nanostructured pattern to metal films by means of porous silicon template opens their new structural, optical, mechanical and electrical properties, which can be successfully applied in nanoelectronics and biomedicine, particularly including devices based on superconductivity effect, SERS analysis with picomolar sensitivity and transdermal drug delivery by electroporation.

scholarly journals Transdermal patches fabricated from hyaluronic acid for the enhanced skin penetration of therapeutic entities

2019 ◽  
Vol 9 (1) ◽  
pp. 252-256
Author(s):  
Syam S. Nair
Keyword(s):  
Drug Delivery ◽  
Hyaluronic Acid ◽  
Transdermal Drug Delivery ◽  
Skin Penetration ◽  
Sustained Delivery ◽  
Research Groups ◽  
Outermost Layer ◽  
Drug Molecules ◽  
Different Types ◽  
Transdermal Route

Skin is an attractive route for drug delivery. However poor permeation of drugs across the skin due to the presence of extremely ordered architecture of outermost layer of skin, led to several investigation to improve the permeability of drugs. Polysaccharides remain widely studied biomaterial for the sustained delivery of drug molecules across the skin. The advance of hyaluronic acid (HA) chemistry with multiple benefits has improved the attention of research groups for its application in the skin transportation of drug molecules. Beginning from the advantages of transdermal route, the present review details the application of HA in transdermal drug delivery. In the last few decades, substantial investigation in the domain has improved the requirement for an outline of all the developments, which is depicted in the review. The review also presented different types of HA based transdermal devices such as transferosomes, nanoemulsions, microneedle etc and their potential to improve the transdermal drug delivery. Furthermore the application of HA through chemical modification as a potential transdermal device is also presented. Keywords: Hyaluronic acid, transdermal drug delivery, microneedles, nanoemulsion, hydrogel

scholarly journals The Pharmaceutical Application of Sulfoxy Amine Chitosan in Design, Development and Evaluation of Transdermal Drug Delivery of Gliclazide

2020 ◽  
pp. 145-161
Author(s):  
Jadhav Rahul Laxman ◽  
Ahire Pallavi ◽  
Yadav Adhikrao Vyankatrao ◽  
Gharge G. Varsha ◽  
Patil Manisha Vyankatrao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Moisture Content ◽  
Transdermal Drug Delivery ◽  
Fourier Transforms ◽  
Research Work ◽  
Factorial Designs ◽  
Design Development ◽  
Transdermal Patches ◽  
Folding Endurance

Objective: The aim & objectives of this research work was to explore applicability of our previously synthesized sulfoxy amine chitosan in design, development and evaluation of transdermal drug delivery of Gliclazide. Methods: To determine the interaction between excipients used and to find out the nature of drug in the formulation, Fourier transforms infra-red spectroscopy (FTIR) and Differential Scanning Colorimetry (DSC) studies were performed. Gliclazide containing transdermal patch were formulated with help of Sulfoxy Amine Chitosan, HPMC, Penetration enhancer Dimethyl Sulfoxide and Glycerine by using solvent casting method.9 formulations prepared by using 32 full factorial designs the effect of formulation variable was studied on % Moisture Content, Folding endurance, % Cumulative drug release at 12 hrs.Formulated transdermal patches were evaluated for various parameters. Results: FTIR & DSC suggest study no drug & polymers interaction .All the prepared transdermal patches were found to be faint yellow in colored, flexible, uniform, smooth, and transparent. The weight of the transdermal patches for different type of formulations ranged between 12.00 ± 0.6 mg & 14.2 ± 0.52 mg. The thickness of the patches varied from 0.171 ± 0.0035 mm to 0.182 ± 0.0026 mm. The moisture content & water vapour transmission rate in the patches ranged from 2.33 to 4.55% & from 0.002246 to 0.003597 mg.cm/cm2 24hrs.XRD diffractogram revealed  pure Gliclazide exhibited characteristic high-intensity diffraction peaks & optimized formulation showed  three peaks in 2θ= 20.6 28.7 and 38.95 with very weak intensities. Optimized batch F7 showed maximum drug release 98.41%. The folding endurance was lies in between 301 and 359. Optimization study was successfully conducted using 32 factorial designs. Conclusion: We concluded that transdermal patches Gliclazide of was successfully formulated with synthesized Sulfoxy Amine Chitosan & evaluated.

scholarly journals AN OVERVIEW OF TRANSDERMAL DELIVERY SYSTEM

2017 ◽  
Vol 10 (10) ◽  
pp. 36 ◽  
Author(s):  
Reshmi Jayaprakash ◽  
Jahnara Hameed ◽  
Anupriya Anupriya
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Transdermal Drug Delivery ◽  
Dosage Form ◽  
Systemic Circulation ◽  
Oral Dosage ◽  
Transdermal Drug Delivery System ◽  
Different Types ◽  
Conventional Dosage

Recently, most widely using conventional dosage form such as tablet, capsules, and injections but due to some case we are preferable to choose transdermal drug delivery system (TDDS) because conventional oral dosage form undergo first pass metabolism. In TDDS, skin is the effective medium for the penetration of drug into systemic circulation. This system required very low dose for the effective result or action. One of the major disadvantages of TDDS is penetration rate is very low through the stratum corneum. Nowadays, different types of skin penetration enhancement techniques are used for increasing the penetration. These types of techniques can be also increase the bioavailability. The patients have more preferable to choose this type of drug delivery system because it has more advantages than conventional dosage form. This article is discuses about the anatomy and physiology of skin and its drug penetration capacity, polymers used in transdermal drug delivery and different types of TDDS.

Biodegradable 3D Printed Polymer Microneedles for Transdermal Drug Delivery

2018 ◽  
Author(s):  
Michael A. Luzuriaga ◽  
Danielle R. Berry ◽  
John C. Reagan ◽  
Ronald A. Smaldone ◽  
Jeremiah J. Gassensmith
Keyword(s):  
Drug Delivery ◽  
3D Printing ◽  
Transdermal Drug Delivery ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Modeling Software ◽  
Deposition Modeling ◽  
3D Printed ◽  
Microfabrication Technique ◽  
Mechanical Strengths

Biodegradable polymer microneedle (MN) arrays are an emerging class of transdermal drug delivery devices that promise a painless and sanitary alternative to syringes; however, prototyping bespoke needle architectures is expensive and requires production of new master templates. Here, we present a new microfabrication technique for MNs using fused deposition modeling (FDM) 3D printing using polylactic acid, an FDA approved, renewable, biodegradable, thermoplastic material. We show how this natural degradability can be exploited to overcome a key challenge of FDM 3D printing, in particular the low resolution of these printers. We improved the feature size of the printed parts significantly by developing a post fabrication chemical etching protocol, which allowed us to access tip sizes as small as 1 μm. With 3D modeling software, various MN shapes were designed and printed rapidly with custom needle density, length, and shape. Scanning electron microscopy confirmed that our method resulted in needle tip sizes in the range of 1 – 55 µm, which could successfully penetrate and break off into porcine skin. We have also shown that these MNs have comparable mechanical strengths to currently fabricated MNs and we further demonstrated how the swellability of PLA can be exploited to load small molecule drugs and how its degradability in skin can release those small molecules over time.

Nanocarriers and their Actions to Improve Skin Permeability and Transdermal Drug Delivery

2015 ◽  
Vol 21 (20) ◽  
pp. 2848-2866 ◽  
Author(s):  
Nauman Khan ◽  
Mohd Harun ◽  
Asif Nawaz ◽  
Nurulaini Harjoh ◽  
Tin Wong
Keyword(s):  
Drug Delivery ◽  
Transdermal Drug Delivery ◽  
Skin Permeability
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