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Curcumin-Loaded Lipid Nanocarriers: A Targeted Approach for Combating Oxidative Stress in Skin Applications.
Aggeliki Liakopoulou1, Sophia Letsiou2, Konstantinos Avgoustakis1
1Laboratory of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, University of Patras, GR-265 04 Patras, Greece.
Pharmaceutics
|February 26, 2025
Summary
Encapsulating curcumin in lipid nanocarriers like NLCs and NEs significantly boosts its stability, skin penetration, and antioxidant power for treating oxidative stress-related skin disorders.
Area of Science:
- Dermatology and Nanotechnology
- Biomedical Engineering
- Pharmacology
Background:
- Oxidative stress is a key factor in skin aging, pigmentation, and inflammation.
- Curcumin possesses antioxidant properties but suffers from poor solubility, stability, and bioavailability.
- Developing effective delivery systems for curcumin is crucial for treating skin disorders.
Purpose of the Study:
- To encapsulate curcumin into solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs), and nanoemulsions (NEs).
- To enhance curcumin's stability, bioavailability, and antioxidant efficacy for skin applications.
- To evaluate the potential of these nanocarriers in managing oxidative stress-related skin conditions.
Main Methods:
- Characterization of nanocarriers (size, PDI, zeta-potential, encapsulation efficiency).
- Stability testing, antioxidant assays (DPPH, FRAP), cytotoxicity (MTT), gene expression analysis (antioxidant markers), and skin penetration studies.
- In vitro evaluation using human dermal fibroblasts under oxidative stress.
Main Results:
- All nanocarriers showed high encapsulation efficiency and stability (>90 days).
- NLCs demonstrated superior stability and skin penetration; NEs provided rapid antioxidant effects.
- Curcumin encapsulation preserved and enhanced bioactivity, upregulated antioxidant genes (GPX1, SOD1, NRF2), and confirmed biocompatibility.
Conclusions:
- Lipid nanocarriers (SLNs, NLCs, NEs) effectively improve curcumin's stability, antioxidant activity, and skin penetration.
- These formulations offer a targeted approach for managing skin oxidative stress.
- The versatility of nanocarriers allows for tailored therapeutic strategies for various skin conditions.
