Recent Advances in Chitosan-Based Nanoparticles for Drug Delivery

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Nanomedicine and Nanotechnology".

Deadline for manuscript submissions: 20 December 2025 | Viewed by 1997

Special Issue Editor


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Guest Editor
Faculty of Medical Dentistry, “Apollonia” University of Iasi, Pacurari Street, No. 11, 700511 Iasi, Romania
Interests: nanomedicines; smart materials; biomaterials; functionalized chitosan nanoparticles; nanocomposites; controlled release
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Special Issue Information

Dear Colleagues,

Chitosan is promising versatile biopolymer that had received particular attention in recent decades due to his physicochemical, biological, and antimicrobial characteristics. Due to their biocompatibility, biodegradability, nontoxicity, enhanced mucoadhesive capacity, and good bioavailability, chitosan nanoparticles can be successfully used in medicine as drug delivery systems. We invite you to submit a full research paper or review article for publication in our Special Issue, entitled “Recent Advances in Chitosan-Based Nanoparticles for Drug Delivery”. This Special Issue aims to focus on the synthesis and characterization of chitosan-based nanoparticles as drug delivery systems. Contributions should take into account the fundamental research of different types of chitosan based carriers, such as nanocapsules, nanospheres, solid lipid nanoparticles, micelles, nanogels, and chitosan-coated liposomes, and attention should also be paid to ligand-functionalized nanocarriers and hybrid nanoparticles containing inorganic particles (metal and metal oxide nanoparticles, quantum dots, etc.). Contributions should contain extensive experimental sections and a rigorous interpretation of the experimental results.

Dr. Delia Mihaela Raţă
Guest Editor

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Keywords

  • nanoparticles
  • drug delivery systems
  • chitosan-coated liposomes
  • solid lipid nanoparticles
  • chitosan nanofibers
  • conjugated polymers
  • nanocomposites

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Published Papers (2 papers)

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Research

18 pages, 8813 KiB  
Article
Chitosan-TPP Nanogels for Ocular Delivery of Folic Acid: Release Profile, Corneal Permeation, and Mucoadhesion Assessment
by Sebastián G. Bruno, Sofía M. Martínez, Camila Costa Gobbato, Daniela A. Quinteros, Agustina Alaimo and Oscar E. Pérez
Pharmaceutics 2025, 17(4), 424; https://doi.org/10.3390/pharmaceutics17040424 - 27 Mar 2025
Viewed by 400
Abstract
Background: Folic acid (FA) is essential for cellular functions but has limited ocular bioavailability, restricting its therapeutic effectiveness. Objective: To develop chitosan (CS)-based nanogels (NGs) for FA transport and release, with corneal permeation evaluation. Methods: NGs’ hydrodynamic diameter (Ho) and [...] Read more.
Background: Folic acid (FA) is essential for cellular functions but has limited ocular bioavailability, restricting its therapeutic effectiveness. Objective: To develop chitosan (CS)-based nanogels (NGs) for FA transport and release, with corneal permeation evaluation. Methods: NGs’ hydrodynamic diameter (Ho) and polydispersity index (PdI) were determined using dynamic light scattering (DLS). CS-FA interaction was confirmed by Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) was applied for the dehydrated material characterization. Scanning electron microscopy (SEM) was used to evaluate the NGs ultraestructure. In vitro drug release studies were performed using a modified Franz diffusion cell, and the release profile was fitted to obtain kinetics parameters. Mucoadhesion properties were evaluated through ζ-potential measurements. Ex vivo corneal permeation studies were conducted in rabbit corneas to compare the permeability of FA contained in NGs. Results: NGs presented a Ho of 312.4 ± 8.2 nm and a PdI of 0.28 ± 0.04. SEM imaging revealed spherical morphologies with minor variations in size and shape induced by FA. Lyophilized and resuspended NGs exhibited a 6.8% increase in Ho and a PdI rise to 0.42, indicating slight aggregation. In vitro drug release studies demonstrated sustained FA release, as determined by the Higuchi model. Mucoadhesion studies showed a decrease in ζ-potential from +36.9 to +18.1 mV, confirming electrostatic interactions with mucin. Ex vivo corneal permeation studies indicated that encapsulated FA permeated 2.6 times slower than free FA, suggesting sustained release. Conclusions: our findings demonstrate the potential of nanostructures in the form of NGs to enhance FA-loaded ocular delivery and bioavailability. Full article
(This article belongs to the Special Issue Recent Advances in Chitosan-Based Nanoparticles for Drug Delivery)
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19 pages, 2029 KiB  
Article
Enhanced Stability and In Vitro Biocompatibility of Chitosan-Coated Lipid Vesicles for Indomethacin Delivery
by Angy Abu Koush, Eliza Gratiela Popa, Daniela Angelica Pricop, Loredana Nita, Cezar-Ilie Foia, Ana-Maria Raluca Pauna, Beatrice Rozalina Buca, Liliana Lacramioara Pavel and Liliana Mititelu-Tartau
Pharmaceutics 2024, 16(12), 1574; https://doi.org/10.3390/pharmaceutics16121574 - 9 Dec 2024
Cited by 1 | Viewed by 1192
Abstract
Background: Lipid vesicles, especially those utilizing biocompatible materials like chitosan (CHIT), hold significant promise for enhancing the stability and release characteristics of drugs such as indomethacin (IND), effectively overcoming the drawbacks associated with conventional drug formulations. Objectives: This study seeks to develop and [...] Read more.
Background: Lipid vesicles, especially those utilizing biocompatible materials like chitosan (CHIT), hold significant promise for enhancing the stability and release characteristics of drugs such as indomethacin (IND), effectively overcoming the drawbacks associated with conventional drug formulations. Objectives: This study seeks to develop and characterize novel lipid vesicles composed of phosphatidylcholine and CHIT that encapsulate indomethacin (IND-ves), as well as to evaluate their in vitro hemocompatibility. Methods: The systems encapsulating IND were prepared using a molecular droplet self-assembly technique, involving the dissolution of lipids, cholesterol, and indomethacin in ethanol, followed by sonication and the gradual incorporation of a CHIT solution to form stable vesicular structures. The vesicles were characterized in terms of size, morphology, Zeta potential, and encapsulation efficiency and the profile release of drug was assessd. In vitro hemocompatibility was evaluated by measuring erythrocyte lysis and quantifying hemolysis rates. Results: The IND-ves exhibited an entrapment efficiency of 85%, with vesicles averaging 317.6 nm in size, and a Zeta potential of 24 mV, indicating good stability in suspension. In vitro release kinetics demonstrated an extended release profile of IND from the vesicles over 8 h, contrasting with the immediate release observed from plain drug solutions. The hemocompatibility assessment revealed that IND-ves exhibited minimal hemolysis, comparable to control groups, indicating good compatibility with erythrocytes. Conclusions: IND-ves provide a promising approach for modified indomethacin delivery, enhancing stability and hemocompatibility. These findings suggest their potential for effective NSAID delivery, with further in vivo studies required to explore clinical applications. Full article
(This article belongs to the Special Issue Recent Advances in Chitosan-Based Nanoparticles for Drug Delivery)
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