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Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications
Published on: November 17, 2015
Development and evaluation of penciclovir-loaded solid lipid nanoparticles for topical delivery
Qingzhi Lv1, Aihua Yu, Yanwei Xi
1Department of Pharmaceutics, College of Pharmacy, Shandong University, 44 Wenhua Xilu, Jinan, China.
International Journal of Pharmaceutics
|May 12, 2009
Summary
Solid lipid nanoparticles (SLNs) effectively delivered penciclovir for topical applications. These penciclovir-loaded SLNs enhanced skin permeation compared to commercial creams, showing promise for dermatological treatments.
Area of Science:
- Nanotechnology in drug delivery
- Dermatopharmaceutics
- Antiviral drug formulation
Background:
- Penciclovir is an antiviral medication.
- Effective topical delivery of penciclovir is crucial for treating skin infections.
- Limitations exist in current topical formulations for optimal drug penetration.
Purpose of the Study:
- To develop solid lipid nanoparticles (SLNs) for penciclovir.
- To evaluate SLNs as a carrier for topical penciclovir delivery.
- To assess the skin penetration and deposition of penciclovir from SLNs.
Main Methods:
- Penciclovir-loaded SLNs were prepared using a double (W/O/W) emulsion technique.
- Characterization included particle size, entrapment efficiency, drug loading, and zeta potential.
- In vitro skin penetration studies using excised rat skin were conducted and compared to a commercial cream.
Main Results:
- SLNs were spherical with a mean diameter of 254.9 nm, high entrapment efficiency (92.40%), and a negative zeta potential (-25.0 mV).
- Penciclovir in SLNs was in an amorphous form, confirmed by DSC.
- SLNs showed over a 2-fold increase in penciclovir penetration through rat skin compared to the control cream at 12h.
- SLNs significantly increased penciclovir uptake in the dermis, while epidermal deposition was similar to the cream.
- Microscopic analysis revealed SLNs altered stratum corneum morphology, enhancing dermal penetration.
Conclusions:
- Solid lipid nanoparticles are a viable carrier for topical penciclovir delivery.
- SLNs demonstrate enhanced skin permeation and dermal targeting of penciclovir.
- This SLN formulation shows potential for improved topical antiviral therapy.
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