Xiang Li, Lijiao Chen, Yongning Yang, Mingfang Ma, Deng Liu, Zhaolou Li
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引用次数: 0
Abstract
A hydroxypropyl β-cyclodextrin (HPCD)/5-fluorouracil (5-FU) inclusion complex was loaded into konjac glucomannan hydrogel successfully by co-assembly. The influence of HPCD on the structure and properties of konjac glucomannan (KGM) hydrogel was investigated. The networks of KGM/HPCD hydrogel became flat and firm after HPCD intervened. The KGM/HPCD hydrogel had diversified microstructures including HPCD molecular cavities, porous lamellar structure in fibrous bands. The X-ray diffractometry (XRD) results reflected amorphous characters of the KGM/HPCD xerogel. The analytical data of Fourier transform infrared spectrometry (FT-IR) and differential scanning calorimetry (DSC) confirmed the supramolecular interactions between KGM and HPCD molecules in the gel network were mainly H-bonding interactions. HPCD improved KGM/HPCD hydrogel by crosslinking physically to construct a novel drug delivery system in the presence of sodium carbonate. The KGM/HPCD hydrogel achieved more effective and sustained drug release, in which HPCD cavities shared responsibility for the controlled release of chemotherapeutic 5-FU molecules. Rheological measurements also showed the presence of HPCD increased the elastic modulus (G') of the novel KGM/HPCD hydrogel.
Graphical abstract
Through co-assembly, a green drug delivery system was successfully constructed with hydroxypropyl β-cyclodextrin/5-fluorouracil inclusion complex loaded into konjac glucomannan hydrogel. By dialysis experiments, the drug 5-fluorouracil release rate from the inclusion complex loaded hydrogel was prolongated remarkably compared to that from single 5-fluorouracil loaded hydrogel. For the inclusion complex loaded hydrogel with different 5-fluorouracil concentrations, or under different physiological conditions, the drug cumulative release appeared also evident difference. This green drug delivery system has important potential application in medical engineering material.
期刊介绍：
The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites.
The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.
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