Abstract
The concept of nanomedicine has risen to be the future of medicine. Advantages of using nanoobjects as vectors for drug delivery systems are numerous, such as fewer side effects due to a low drug dose, and high specificity between drug and target. Unlike systemic therapy, targeting a specific target is more efficient and less costly. In inflammatory bowel disease, including ulcerative colitis and Crohn disease, the colon represents the targeted organ. A large number of drugs are candidates for loading into nanoparticles (NPs). Small molecules, such as tripeptides and siRNA, or larger molecules, such as proteins (hormones, antibodies (Ab), etc.), can be encapsulated alone or in a complex form inside the NPs. In our studies, once NPs are synthesized and loaded with anti-inflammatory compounds, they are delivered to the colon. An efficient technique has been developed for specific NP targeting to digestive tract regions, including the colon, using a hydrogel based on electrostatic interactions between positive ions and negative polysaccharides. An in situ double cross-linking process, mediated by Ca²⁺ and SO₄²⁻, of chitosan and alginate administered to the mouse gastrointestinal (GI) tract by double gavage, is used for gel formati...Continue Reading
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