Bioresponsive drug delivery systems in intestinal inflammation: State-of-the-art and future perspectives
- PMID: 29966684
- DOI: 10.1016/j.addr.2018.06.021
Bioresponsive drug delivery systems in intestinal inflammation: State-of-the-art and future perspectives
Abstract
Oral colon-specific delivery systems emerged as the main therapeutic cargos by making a significant impact in the field of modern medicine for local drug delivery in intestinal inflammation. The site-specific delivery of therapeutics (aminosalicylates, glucocorticoids, biologics) to the ulcerative mucus tissue can provide prominent advantages in mucosal healing (MH). Attaining gut mucosal healing and anti-fibrosis are main treatment outcomes in inflammatory bowel disease (IBD). The pharmaceutical strategies that are commonly used to achieve a colon-specific drug delivery system include time, pH-dependent polymer coating, prodrug, colonic microbiota-activated delivery systems and a combination of these approaches. Amongst the different approaches reported, the use of biodegradable polysaccharide coated systems holds great promise in delivering drugs to the ulcerative regions. The present review focuses on major physiological gastro-intestinal tract challenges involved in altering the pharmacokinetics of delivery systems, pathophysiology of MH and fibrosis, reported drug-polysaccharide cargos and focusing on conventional to advanced disease responsive delivery strategies, highlighting their limitations and future perspectives in intestinal inflammation therapy.
Keywords: Colon-specific drug delivery; Crohn's disease; Inflammatory bowel disease; Microbiota-activated drug delivery; Mucosal healing; Polysaccharides; Prodrug; Ulcerative colitis.
Copyright © 2018. Published by Elsevier B.V.
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