Oral particulate delivery: status and future trends.

Area of Science:

• Pharmaceutical Sciences
• Drug Delivery Systems
• Biotechnology

Background:

• Oral delivery of complex molecules (peptides, proteins) is highly desirable but limited by gastrointestinal degradation.
• Particulate systems (microspheres, liposomes) protect drugs but exhibit poor oral absorption.
• Low absorption efficiency is a major barrier to the clinical use of oral particulate drug delivery.

Purpose of the Study:

• To review strategies for enhancing oral absorption of particulate drug delivery systems.
• To highlight the potential applications and future prospects of particulates for oral delivery of complex molecules.

Main Methods:

• Review of existing literature on particulate systems for oral drug delivery.
• Analysis of strategies including mucoadhesive polymers and targeted delivery systems.
• Evaluation of animal studies investigating particle absorption efficiency.

Main Results:

• Particulate systems offer protection but generally have low oral absorption efficiencies.
• Mucoadhesive polymers and targeted delivery systems are being explored to improve absorption.
• Despite challenges, particulates hold potential for oral delivery of peptides and proteins.

Conclusions:

• Improving the oral absorption of particulate systems is crucial for their successful application.
• Further research into mucoadhesion and targeted delivery is needed.
• Particulates remain a promising area for the future of oral complex molecule delivery.