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Drug Delivery: Overview01:16

Drug Delivery: Overview

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The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
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HDACi Delivery Systems Based on Cellulose Valproate Nanoparticles.

Henry Lindemann1, Marie Kühne2, Andreas Koschella1

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Valproic acid (VPA), a histone deacetylase inhibitor, can be loaded onto cellulose nanoparticles for targeted delivery. This approach improves VPA

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Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Nanotechnology

Background:

  • Histone deacetylase inhibitors (HDACi), such as valproic acid (VPA), show therapeutic potential for cancer and inflammatory diseases.
  • Current limitations of VPA include rapid metabolism, short serum half-life, and off-target side effects, necessitating targeted delivery strategies.
  • Biopolymeric carriers, particularly polysaccharides, offer biocompatibility and biodegradability, with functional groups suitable for drug immobilization.

Purpose of the Study:

  • To develop a targeted delivery system for valproic acid (VPA) using cellulose-based nanoparticles.
  • To functionalize cellulose with VPA and characterize the resulting nanoparticles for controlled release applications.

Main Methods:

  • Esterification of cellulose's hydroxyl groups with valproic acid (VPA) to achieve high drug loading.
  • Fabrication of uniform nanoparticles (NPs) with an approximate size of 150 nm.
  • Assessment of VPA release kinetics from the cellulose NPs under physiological conditions.

Main Results:

  • Cellulose nanoparticles successfully loaded with valproic acid (VPA) were synthesized via esterification.
  • The resulting nanoparticles exhibited a uniform size distribution around 150 nm.
  • Controlled release of VPA from the nanoparticles was observed under physiological conditions.

Conclusions:

  • Cellulose-based nanoparticles represent a promising carrier for targeted delivery of valproic acid (VPA).
  • This approach mitigates VPA's pharmacokinetic limitations and potential side effects.
  • The developed VPA-loaded NPs offer a viable strategy for enhanced therapeutic efficacy in inflammatory diseases and cancer.