Title:Polymeric Systems for Colon-specific Mesalazine Delivery in the
Intestinal Bowel Diseases Management
Volume: 30
Issue: 12
关键词:
5-ASA,聚合物系统,结肠输送,纳米颗粒系统,微颗粒系统,改性释放剂型
摘要: The anti-inflammatory 5-aminosalicylic acid (5-ASA) is the main therapeutic
option used to prevent and treat inflammatory bowel diseases. The upper intestinal tract
performs rapid and almost complete absorption of this drug when administered orally,
making local therapeutic levels of the molecule in the inflamed colonic mucosa difficult
to achieve. Micro and nanoparticle systems are promising for 5-ASA incorporation because
the reduced dimensions of these structures can improve the drug's pharmacodynamics
and contribute to more efficient and localized therapy. Together, the association of these
systems with polymers will allow the release of 5-ASA through specific targeting
mechanisms to the colon, as demonstrated in the mesalazine modified-release dosage
form. This review will summarize and discuss the challenges for the oral administration
of 5-ASA and the different colon-specific delivery strategies using polymers.