Intranasal insulin. Clinical pharmacokinetics

Area of Science:

• Endocrinology
• Pharmacology
• Drug Delivery Systems

Background:

• Diabetes mellitus, encompassing insulin-dependent (IDDM) and non-insulin-dependent (NIDDM) types, requires effective insulin management.
• Current insulin administration methods face challenges with bioavailability and patient compliance.
• Nasal insulin delivery presents a promising alternative route for therapeutic intervention.

Purpose of the Study:

• To evaluate the potential of nasally administered insulin for managing both IDDM and NIDDM.
• To explore methods for improving the bioavailability and efficacy of intranasal insulin formulations.
• To highlight the importance of safe and non-irritating delivery systems.

Main Methods:

• Investigated the use of intranasal insulin for glycemic control in diabetic models.
• Examined the impact of absorption enhancers and bioadhesive microspheres on insulin bioavailability.
• Assessed the efficacy of timed intranasal insulin dosing to prevent hyperglycemia and hypoglycemia.

Main Results:

• Intranasal insulin demonstrated potential for treating both IDDM and NIDDM.
• Properly timed intranasal insulin doses can effectively prevent preprandial hyperglycemia and postprandial hypoglycemia in NIDDM patients.
• Absorption enhancers and bioadhesive microspheres significantly improved the low bioavailability of simple insulin formulations.

Conclusions:

• Nasal insulin administration is a viable strategy for diabetes management.
• Optimizing delivery systems is crucial for enhancing intranasal insulin efficacy.
• Development should focus on non-toxic and non-irritant systems for patient safety.