Related Experiment Video
Updated: Aug 5, 2025
10:10
Transport Properties of Ibuprofen Encapsulated in Cyclodextrin Nanosponge Hydrogels: A Proton HR-MAS NMR Spectroscopy Study
Published on: August 15, 2016
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Anomalous Properties of Cyclodextrins and Their Complexes in Aqueous Solutions
Thorsteinn Loftsson1, Hákon Hrafn Sigurdsson1, Phatsawee Jansook2
1Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, Iceland.
Materials (Basel, Switzerland)
|March 29, 2023
Summary
Cyclodextrins (CDs) are versatile pharmaceutical excipients with surprising properties. These cyclic oligosaccharides enhance drug solubility and permeation, forming nanoparticles that can impact experimental outcomes.
Area of Science:
- Pharmaceutical Science
- Materials Science
- Physical Chemistry
Background:
- Cyclodextrins (CDs) are cyclic oligosaccharides widely used as industrial excipients since the 1970s.
- Over 100,000 publications exist on CDs, yet their properties continue to yield unexpected findings.
- CDs are found in over 130 pharmaceutical products and numerous consumer goods.
Purpose of the Study:
- To review unexpected physicochemical properties of cyclodextrins as pharmaceutical excipients.
- To highlight surprising behaviors of CDs in drug formulation and delivery.
- To discuss the implications of CD self-assembly and interaction with biological membranes.
Main Methods:
- Literature review of studies on cyclodextrins in pharmaceutical applications.
- Analysis of experimental data revealing unique properties of CDs.
- Discussion of self-assembly behavior and membrane interaction mechanisms.
Main Results:
- CDs act as effective solubilizing agents for poorly soluble drugs in aqueous solutions.
- CDs can function as organic cosolvents, similar to ethanol.
- Self-assembly of CDs and their complexes forms nanoparticles, leading to clear solutions but potential experimental artifacts.
- CDs enhance drug permeation through lipophilic membranes without compromising membrane integrity.
Conclusions:
- Cyclodextrins exhibit complex and often unexpected behaviors as pharmaceutical excipients.
- Understanding these unique properties is crucial for accurate experimental interpretation and effective drug formulation.
- CDs offer significant potential in drug delivery, particularly in enhancing solubility and permeation.
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