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Solid Lipid Nanoparticles SLNs for Intracellular Targeting Applications
Published on: November 17, 2015
Lipid Nanoparticles as a Skin Wound Healing Drug Delivery System: Discoveries and Advances
Myla Lôbo de Souza1, Widson Michael Dos Santos1, André Luiz Moreira Domingues de Sousa1
1Laboratory of Drug Technology, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil.
Abstract:
Chronic wounds are a remarkable cause of morbidity, requiring long-time treatments with a significant impact on the quality of life and high costs for public health. Although there are a variety of topical skin preparations commercially available, they have several limitations that frequently impair wound healing, such as drug instability, toxicity, limited time of action and ineffective skin permeation. In recent years, researchers have focused on the development of new effective treatments for wound healing and shown frequent interest in nanometric drug delivery systems to overcome such obstacles. In dermatology, lipid nanoparticles (LNPs) have received great attention from researchers due to their great functionalities, greater adhesion to the skin and film formation, enabling the hydration and maintenance of skin integrity, as well as present a more effective penetration through the skin barrier. This review provides an update on topical formulations based on Solid Lipid Nanoparticles (SLNs) and Nanostructured Lipid Carriers (NLCs) as wound healing treatments. Both SLNs and NLCs are able to increase solubility and stability of active pharmaceutical ingredients and increase skin penetration compared to the free drugs. Additionally, SLNs and NLCs can increase pharmacological activity, increase the release profile of the drugs, promote synergistic effects and improve the sensory properties of the final formulation. Topical dosage forms containing nanoparticles have been extensively evaluated for wound healing activity, mainly the dressings, films and scaffolds. Therefore, lipid nanoparticles have contributed in improving wound healing therapies when incorporated into other dosage forms with better efficacy and lesser adverse effects than conventional formulations.
Insights
Solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs) enhance topical wound healing treatments by improving drug delivery and efficacy. These lipid nanoparticles (LNPs) offer better skin penetration and stability for chronic wound care.
Area of Science:
- Pharmacology
- Materials Science
- Dermatology
Background:
- Chronic wounds significantly impact patient quality of life and healthcare costs.
- Existing topical treatments for chronic wounds have limitations including poor drug stability, toxicity, and ineffective skin permeation.
- Nanotechnology offers potential solutions for overcoming these limitations in wound healing therapies.
Purpose of the Study:
- To review topical formulations utilizing Solid Lipid Nanoparticles (SLNs) and Nanostructured Lipid Carriers (NLCs) for wound healing.
- To highlight the advantages of lipid nanoparticles (LNPs) in enhancing drug delivery for chronic wound management.
- To discuss the role of SLNs and NLCs in improving the efficacy and safety of wound healing treatments.
Main Methods:
- Literature review of topical formulations incorporating SLNs and NLCs for wound healing.
- Analysis of the physicochemical properties and functional benefits of lipid nanoparticles in dermatological applications.
- Evaluation of nanoparticle-based dosage forms such as dressings, films, and scaffolds for wound healing.
Main Results:
- SLNs and NLCs improve the solubility, stability, and skin penetration of active pharmaceutical ingredients compared to free drugs.
- These lipid nanoparticles enhance pharmacological activity, modulate drug release profiles, and offer synergistic effects.
- Nanoparticle-containing topical formulations, particularly dressings, films, and scaffolds, demonstrate improved wound healing efficacy.
- SLNs and NLCs contribute to better hydration, skin integrity, and sensory properties of topical formulations.
Conclusions:
- Lipid nanoparticles (LNPs), specifically SLNs and NLCs, represent a promising advancement in topical wound healing therapies.
- Incorporation of SLNs and NLCs into various dosage forms enhances therapeutic outcomes with potentially fewer adverse effects than conventional treatments.
- Further development of nanoparticle-based wound healing formulations is warranted to address the challenges of chronic wound management.
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