Chitosan is a biopolymer derived from chitin, a natural polymer found in the shells of crustaceans such as shrimp, crabs, and lobsters. It is a linear polysaccharide composed of randomly distributed β-(1→4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). Chitosan has a range of applications due to its unique physical and chemical properties, including its ability to form films, gels, and beads, and its biocompatibility.
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Chitosan
Ocular application of electrospun materials for drug delivery and cellular therapies
The constraints of delivering conventional drugs, biologics and cell-based therapeutics to target ocular sites necessitate the fabrication of novel drug delivery systems to treat diverse ocular diseases. Conventional ocular drug delivery approaches are prone to low bioavailability, poor penetration…
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Colon targeted releases and uptakes of paclitaxel loaded in modified porous starch
Hyaluronic acid can modify porous starch through cross-linking and hydrogen bonding, effectively achieving a paclitaxel entrapment efficiency of ∼92 % and drug loading of ∼23 %. In this study, the pores and intergranular gaps of porous starch were filled with paclitaxel under solvent volatilization,…
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Recent Advances of Ocular Drug Delivery Systems: Prominence of Ocular Implants for Chronic Eye…
Chronic ocular diseases can seriously impact the eyes and could potentially result in blindness or serious vision loss. According to the most recent data from the WHO, there are more than 2 billion visually impaired people in the world. Therefore, it is pivotal to develop more sophisticated,…
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Chitosan coated niosomes for nose-to-brain delivery of clonazepam: formulation, stability and…
Crossing the Blood Brain Barrier constitutes a challenge in drug administration to the brain. In this context, nose-to-brain delivery is explored as an alternative route in the treatment of central nervous system disorders, and nanotechnology constitutes a promising tool for drug delivery to the…
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Formulation of antiretroviral nanocrystals and development into a microneedle delivery system for…
HIV/AIDS remains a major global public health issue. While antiretroviral therapy is effective at reducing the viral load in the blood, up to 50% of those with HIV suffer from some degree of HIV-associated neurocognitive disorder, due to the presence of the blood–brain barrier restricting drugs from…
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Preparation of mucoadhesive methacrylated chitosan nanoparticles for delivery of ciprofloxacin
Mucoadhesive polymers and their nanoparticles have attracted a lot of attention in pharmaceutical applications, especially transmucosal drug delivery (TDD). Mucoadhesive polysaccharide-based nanoparticles, particularly chitosan, and its derivatives, are widely used for TDD owing to their outstanding…
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Design of experiment based formulation optimization of chitosan-coated nano-liposomes of…
The aim of this research was to design and develop chitosan-coated nano-liposomes of progesterone for its safe and effective oral delivery through the vesicular system providing sustained drug release, enhanced drug stability in gastro-intestinal (GI) fluid and improved drug absorption leading to…
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Solid implantable devices for sustained drug delivery
Implantable drug delivery systems (IDDS) are an attractive alternative to conventional drug administration routes. Oral and injectable drug administration are the most common routes for drug delivery providing peaks of drug concentrations in blood after administration followed by concentration decay…
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Thiolated polymers: An overview of mucoadhesive properties and their potential in drug delivery via…
Abstract
Thiolated polymers, or thiomers, are a class of polymers that exhibit unique mucoadhesive properties, allowing them to form strong covalent bonds with cysteine-rich subdomains of mucus glycoproteins. This property makes them ideal for developing drug delivery systems (DDSs) for various dry…
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Microfluidic mixing as platform technology for production of chitosan nanoparticles loaded with…
In recent decades, biotechnological drugs have emerged as relevant therapeutic tools. However, therapeutic molecules can exert their activity only if properly formulated and delivered into the body. In this regard, nano-sized drug delivery systems have been shown to provide protection, stability,…
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