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Lipid nanoparticles (SLN & NLC) for delivery of vitamin E: a comprehensive review
The antioxidative and photoprotective properties of vitamin E have caused it to be included as an active agent in various pharmaceutical and cosmetic products. However, its lipophilicity, chemical instability and poor skin penetration have limited the effectiveness of these formulations. For that re...
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Published in: | International journal of cosmetic science 2018-04, Vol.40 (2), p.103-116 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The antioxidative and photoprotective properties of vitamin E have caused it to be included as an active agent in various pharmaceutical and cosmetic products. However, its lipophilicity, chemical instability and poor skin penetration have limited the effectiveness of these formulations. For that reason, many attempts to include it in different drug delivery systems have been made. In recent decades, lipid nanoparticles have received special attention due to their advantages of compatibility with the skin, ability to enhance penetration of drugs in the stratum corneum, protection of the encapsulated substance against degradation induced by the external medium and control of drug release. This work reviews the current status of the encapsulation of vitamin E in lipid nanoparticles. We describe the most important methods for obtaining and characterizing lipid nanoparticles containing vitamin E (LNP‐VE), various techniques for the evaluation of vitamin E's properties after encapsulation, the main in vitro and in vivo studies of the potential effectiveness or toxicity of LNP‐VE, the formulations and stability studies of this delivery system, the commercial products based on LNP‐VE and the regulatory aspects related to lipid nanoparticles. Finally, we discuss the most relevant advantages of encapsulating vitamin E in such particles and critical aspects that still demand attention to enhance the potential of solid lipid nanoparticles to deliver vitamin E.
Résumé
Les propriétés antioxydantes et photoprotectrices de la vitamine E ont fait que cette vitamine était incluse, en tant qu'agent actif, dans divers produits pharmaceutiques et cosmétiques. Cependant, son caractère hydrophobe (lipophile), son instabilité chimique et sa pauvre pénétration dans la peau ont limité l'efficacité de ces formulations. Pour cette raison, de nombreuses tentatives pour inclure la vitamin E dans différents systèmes de libération de médicaments ont été faites. Au cours des dernières décennies, les nanoparticules lipidiques ont reçu une attention particulière en raison de leurs avantages de compatibilité avec la peau, de leurs capacités d'augmenter la pénétration des médicaments dans la couche cornée (stratum corneum), de leurs facultés de protection de la substance encapsulée contre la dégradation induite par l'environnement externe et en raison du contrôle de la libération du médicament. Ce travail analyse l’état actuel de l'encapsulation de la vitamine E dans les nanoparticules lipid |
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ISSN: | 0142-5463 1468-2494 |
DOI: | 10.1111/ics.12452 |