Explore the uses of Chitosan Nanoparticles

Explore the uses of Chitosan Nanoparticles

As technology advances, we are getting introduced to a lot of innovative and interesting inventions that make

our lives easier. One such creation has been chitosan nanoparticles.

These are highly used in the medical industry mainly because of their biocompatible properties. Keep reading, and today, we will share with you some of the most common uses of this invention.

So, let us not waste our time any further and dive right into it.

Antifungal Properties Chitosan, in its free polymer form, demonstrates antifungal properties against Alternaria alternata, Rhizopus oryzae, Aspergillus niger, Phomopsis asparagus, and Rhizopus stolonifer. The antifungal efficacy of chitosan depends on factors such as its concentration, molecular weight, degree of substitution, the type of functional groups added, and the specific fungus it targets. While chemical modification can enhance chitosan to target particular

pathogens, its inherent antifungal activity requires no such alterations.

Drug Delivery Chitosan nanoparticles have been widely studied for their potential as drug delivery agents due to their biocompatibility and non-toxic nature. Research confirmed that ionic gelation could produce chitosanTPP nanoparticles suitable for clinical use. This study also analyzed how manufacturing parameters affect particle quality to ensure consistent results during production.

A subsequent study in 2006 explored the in vitro and in vivo interactions of chitosan nanoparticles (CSNPs) with epithelial cells on the ocular surface. CSNPs labelled with fluorescein isothiocyanate-bovine serum albumin were produced via ionotropic gelation, and three concentrations were tested on human conjunctival epithelial cells (IOBA-NHC) for exposure durations of 15, 30, 60, and 120 minutes. Cell survival

was assessed immediately after treatment and after 24 hours in a recovery medium.

Confocal microscopy examined the interaction between CSNPs and IOBA-NHC cells, while fluorometry evaluated the effects of temperature and metabolic inhibition. Rabbit models were used to study acute tolerance and in vivo uptake, revealing that CSNP uptake increased over time and was temperaturedependent, unaffected by metabolic inhibition using sodium azide. No inflammation or alterations were observed in the rabbit ocular surface post-exposure, and fluorescence microscopy confirmed in vivo uptake by corneal and conjunctival epithelia. These findings demonstrated the compatibility of CSNPs with ocular surface tissues.

For non-injection drug delivery to mucosal sites, overcoming drug absorption challenges is critical. The mucoadhesive nature of chitosan, stemming from its positive charge, allows it to bind with negatively

charged mucus, making it a strong carrier for such drugs.

Chitosan-based nanoparticles have been used to deliver drugs to the lungs, fixing lung mucosa effectively. For instance, dry powder inhalation of rifampicin, an anti-tubercular drug, with chitosan as the carrier enabled sustained drug release over 24 hours. Similarly, spray-dried microparticles of itraconazole loaded with chitosan nanoparticles improved pulmonary deposition of the antifungal drug.

Gold-Chitosan Particles for Heavy Metal Sensing Research in 2005 proposed using gold nanoparticles capped with chitosan for detecting heavy metal ions.

Chitosan’s polycationic nature enables electrostatic attachment to negatively charged gold nanoparticle surfaces. This setup provides steric hindrance for colloidal stability, allowing functionalized nanoparticles to act as sensors. The combination of chitosan’s chelating ability and gold nanoparticles’

optical properties enables the detection of low concentrations of heavy metal ions in water.

Water Treatment Beyond medical uses, it has applications in water treatment. Functional groups like hydroxyl and amino in chitosan make it an excellent adsorbent. One study demonstrated that membranes coated with chitosan nanoparticles removed bacteria more effectively than uncoated ones. In 2015, chitosan-zinc oxide nanoparticles achieved 99% color removal from textile effluents. When made magnetic, chitosan can facilitate the recovery of adsorbed dyes using magnetic forces, enhancing water treatment reusability.

Wrapping Up The development of chitosan nanoparticles has become one of the most important technological advancements in the medical industry. From the discussion above, it should be clear to you how these are used in the medical industry.

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