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Drug delivery with topically applied nanoparticles: science fiction or reality
Charité - Universitätsmedizin Berlin, Germany.
Charité - Universitätsmedizin Berlin, Germany.
Charité - Universitätsmedizin Berlin, Germany.
Charité - Universitätsmedizin Berlin, Germany.
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2013 (English)In: Skin Pharmacology and Physiology, ISSN 1660-5527, Vol. 26, no 4-6, 227-233 p.Article in journal (Refereed) Published
Abstract [en]

The efficacy of topically applied drugs is determined by their action mechanism and their potential capacity of passing the skin barrier. Nanoparticles are assumed to be efficient carrier systems for drug delivery through the skin barrier. For flexible nanoparticles like liposomes, this effect has been well demonstrated. The penetration properties of solid nanoparticles are currently under intensive investigation. The crucial advantage of nanoparticles over non-particulate substances is their capability to penetrate deeply into the hair follicles where they can be stored for several days. There is no evidence, yet, that solid particles ≥40 nm are capable of passing through the healthy skin barrier. Therefore and in spite of the long-standing research efforts in this field, commercially available solid nanoparticle-based products for drug delivery through the healthy skin are still missing. Nevertheless, the prospects for the clinical use of nanoparticles in drug delivery are tremendous. They can be designed as transport systems delivering drugs efficiently into the hair follicles in the vicinity of specific target structures. Once deposited at these structures, specific signals might trigger the release of the drugs and exert their effects on the target cells. In this article, examples of such triggered drug release are presented.

Place, publisher, year, edition, pages
S. Karger, 2013. Vol. 26, no 4-6, 227-233 p.
Keyword [en]
Follicular penetration · Hair follicle · Triggered drug release
National Category
Medical Engineering
URN: urn:nbn:se:liu:diva-100450DOI: 10.1159/000351940PubMedID: 23921109OAI: diva2:662690
Available from: 2013-11-08 Created: 2013-11-08 Last updated: 2015-03-12Bibliographically approved

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Mak, Wing Cheung
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