Degradation behavior of theophylline/chitosan/?-cyclodextrin microspheres for pulmonary drug delivery

Development of cyclodextrin microspheres for pulmonary drug delivery.

PURPOSE Microparticles of diameter < 5 microm were synthesized by interfacial cross-linking of 7.5% (w/v) beta-cyclodextrins (beta-CD) with 4.5% (w/v) terephtaloyle chloride in 1 M NaOH, in order to provide stable vector for drug encapsulation suitable for administration at the alveolar scale. METHODS Batches were prepared varying different parameters such as amount of monomer (beta-CD) (5-30...

2 Microspheres for Drug Delivery

Cyclodextrin Complexes of Reduced Bromonoscapine in Guar Gum Microspheres Enhance Colonic Drug Delivery

Here, we report improved solubility and enhanced colonic delivery of reduced bromonoscapine (Red-Br-Nos), a cyclic ether brominated analogue of noscapine, upon encapsulation of its cyclodextrin (CD) complexes in bioresponsive guar gum microspheres (GGM). Phase-solubility analysis suggested that Red-Br-Nos complexed with β-CD and methyl-β-CD in a 1:1 stoichiometry, with a stability constant (Kc)...

Bioadhesive Microspheres for Tuberculosis Drug Delivery

Tuberculosis (TB) is an infectious disease that mainly affects the lungs. For the treatment of tuberculosis, conventional drug delivery system fails to achieve efficient drug delivery system fails to achieve efficient drug delivery at the target site. Today, bioadhesive microspheres became a topic of great interest as a novel carrier for drug delivery. Bioadhesive microspheres offers longer ret...

Cyclodextrin In Drug Delivery: A Review

Cyclodextrins (CDs) are a family of cyclic oligosaccharides composed ofα-(1, 4) linked glucopyranose subunits. CDs have been found as potential candidates because of their ability to alter physical, chemical and biological properties of guest molecules through the formation of inclusion complexes. Pure cyclodextrins that were suitable for pharmaceutical applications did not come available until...