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      Vesicular nanocarrier based treatment of skin fungal infections: Potential and emerging trends in nanoscale pharmacotherapy

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          Abstract

          Occurrence of skin fungal infections is increasing nowadays and their presence is more prominent in patients suffering from immunocompromised diseases like AIDS. Skin fungal infections are a major cause of visits by patients to dermatology clinics. Although, a large number of antifungal agents are available for treatment of skin fungal infections, but, their toxic profile and physicochemical characteristics reduce therapeutic outcome. When these antifungal agents are delivered topically using conventional formulations like creams and gels, they may cause various side effects like redness, burning, and swelling at the site of application. Therefore, various vesicular formulations (phospholipid based or non phospholipid based) have been explored by pharmaceutical scientists to treat skin fungal infections topically. Vesicular formulation explored for the purpose are liposomes, ethosomes, transfersomes, transethosomes, niosomes, spanlastics, oleic acid vesicles, and nanoparticles. These formulations show various advantages like bioavailability enhancement of bioactives, high skin permeation power, no side effects at application site, dosing frequency reduction, and sustained drug release. Therefore, in the present article, we have discussed about the utility of various vesicular nanocarrier systems to treat skin fungal infections.

          Graphical abstract

          Vesicular nanocarriers used for treatment of skin fungal infection may be phospholipid based (liposomes, ethosomes, transfersomes, transethosomes) or non phospholipid based (niosomes, spanlastics, oleic acid vesicles).

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          Liposomes as nanomedical devices

          Since their discovery in the 1960s, liposomes have been studied in depth, and they continue to constitute a field of intense research. Liposomes are valued for their biological and technological advantages, and are considered to be the most successful drug-carrier system known to date. Notable progress has been made, and several biomedical applications of liposomes are either in clinical trials, are about to be put on the market, or have already been approved for public use. In this review, we briefly analyze how the efficacy of liposomes depends on the nature of their components and their size, surface charge, and lipidic organization. Moreover, we discuss the influence of the physicochemical properties of liposomes on their interaction with cells, half-life, ability to enter tissues, and final fate in vivo. Finally, we describe some strategies developed to overcome limitations of the “first-generation” liposomes, and liposome-based drugs on the market and in clinical trials.
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            Nanoparticles and microparticles for skin drug delivery.

            Skin is a widely used route of delivery for local and systemic drugs and is potentially a route for their delivery as nanoparticles. The skin provides a natural physical barrier against particle penetration, but there are opportunities to deliver therapeutic nanoparticles, especially in diseased skin and to the openings of hair follicles. Whilst nanoparticle drug delivery has been touted as an enabling technology, its potential in treating local skin and systemic diseases has yet to be realised. Most drug delivery particle technologies are based on lipid carriers, i.e. solid lipid nanoparticles and nanoemulsions of around 300 nm in diameter, which are now considered microparticles. Metal nanoparticles are now recognized for seemingly small drug-like characteristics, i.e. antimicrobial activity and skin cancer prevention. We present our unpublished clinical data on nanoparticle penetration and previously published reports that support the hypothesis that nanoparticles >10nm in diameter are unlikely to penetrate through the stratum corneum into viable human skin but will accumulate in the hair follicle openings, especially after massage. However, significant uptake does occur after damage and in certain diseased skin. Current chemistry limits both atom by atom construction of complex particulates and delineating their molecular interactions within biological systems. In this review we discuss the skin as a nanoparticle barrier, recent work in the field of nanoparticle drug delivery to the skin, and future directions currently being explored. Copyright © 2011 Elsevier B.V. All rights reserved.
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              Niosomes from 80s to present: the state of the art.

              Efficient and safe drug delivery has always been a challenge in medicine. The use of nanotechnology, such as the development of nanocarriers for drug delivery, has received great attention owing to the potential that nanocarriers can theoretically act as "magic bullets" and selectively target affected organs and cells while sparing normal tissues. During the last decades the formulation of surfactant vesicles, as a tool to improve drug delivery, brought an ever increasing interest among the scientists working in the area of drug delivery systems. Niosomes are self assembled vesicular nanocarriers obtained by hydration of synthetic surfactants and appropriate amounts of cholesterol or other amphiphilic molecules. Just like liposomes, niosomes can be unilamellar or multilamellar, are suitable as carriers of both hydrophilic and lipophilic drugs and are able to deliver drugs to the target site. Furthermore, niosomal vesicles, that are usually non-toxic, require less production costs and are stable over a longer period of time in different conditions, so overcoming some drawbacks of liposomes. The niosome properties are specifically dictated by size, shape, and surface chemistry which are able to modify the drug's intrinsic pharmacokinetics and eventual drug targeting to the areas of pathology. This up-to-date review deals with composition, preparation, characterization/evaluation, advantages, disadvantages and application of niosomes.
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                Author and article information

                Contributors
                Journal
                Asian J Pharm Sci
                Asian J Pharm Sci
                Asian Journal of Pharmaceutical Sciences
                Shenyang Pharmaceutical University
                1818-0876
                2221-285X
                16 August 2018
                March 2019
                16 August 2018
                : 14
                : 2
                : 117-129
                Affiliations
                [a ]Department of Pharmaceutics, Rayat-Bahra College of Pharmacy, Hoshiarpur, Punjab 146001, India
                [b ]I. K. Gujral Punjab Technical University, Jalandhar, Punjab 144601, India
                [c ]Faculty of Pharmaceutical Sciences, Department of Pharmaceutics, PCTE Group of Institutes, Ludhiana, Punjab 142021, India
                Author notes
                [* ]Corresponding author. Faculty of Pharmaceutical Sciences, Department of Pharmaceutics, PCTE Group of Institutes, Ludhiana, Punjab 142021, India. Mobil: 91 9876827001. drutreja@ 123456gmail.com
                Article
                S1818-0876(18)30029-1
                10.1016/j.ajps.2018.05.007
                7042486
                32104444
                5c19fa97-c932-4d1b-b809-d136fcf4fa11
                © 2018 Shenyang Pharmaceutical University. Published by Elsevier B.V.

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 10 January 2018
                : 22 March 2018
                : 21 May 2018
                Categories
                Review Article

                conventional,nanoparticle,spanlastics,transfersomes,vesicular

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