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Lipid nanoparticles: effect on bioavailability and pharmacokinetic changes.

Eliana B Souto1, Rainer H Müller

  • 1Faculty of Health Sciences, Fernando Pessoa University, Rua Carlos da Maia, 296, P-4200-150, Porto, Portugal. eliana@ufp.edu.pt

Handbook of Experimental Pharmacology
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Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) are advanced colloidal carriers. These lipid nanoparticles enhance drug delivery by modifying active pharmaceutical ingredient (API) release and bioavailability for improved therapy.

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Area of Science:

  • Pharmaceutical Technology
  • Nanomedicine
  • Drug Delivery Systems

Background:

  • Pharmaceutical technology research focuses on designing effective formulations for therapy, considering patient compliance and therapeutic needs.
  • Colloidal carriers, especially lipid nanoparticles, offer unique physicochemical properties beneficial for drug delivery.
  • Lipid nanoparticles have demonstrated potential across various administration routes, including oral, dermal, parenteral, pulmonary, and brain targeting.

Purpose of the Study:

  • To review the application of solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) in modifying drug release profiles.
  • To explore the impact of SLN and NLC on pharmacokinetic parameters of incorporated active pharmaceutical ingredients (APIs).
  • To discuss how these lipid matrices can modulate API bioavailability, either increasing or decreasing it based on therapeutic goals.

Main Methods:

  • Review of existing literature on solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) in pharmaceutical formulations.
  • Analysis of how the physicochemical properties (morphology, surface, polymorphism) of SLN and NLC influence API incorporation.
  • Examination of incorporation parameters including production yield, loading capacity, and encapsulation efficiency.

Main Results:

  • SLN and NLC effectively alter the release kinetics of incorporated APIs.
  • These lipid nanocarriers significantly modify pharmacokinetic parameters, impacting drug absorption and distribution.
  • The characteristics of SLN and NLC directly correlate with API loading capacity and encapsulation efficiency.

Conclusions:

  • Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) are versatile platforms for optimizing drug delivery.
  • These nanocarriers enable precise control over API bioavailability, catering to specific therapeutic requirements.
  • Understanding the structure-property relationships of SLN and NLC is crucial for successful formulation development.