Inclusions of lidocaine hydrochloride in cyclodextrins were prepared to obtain stable complexes compatible for association with chlorhexidine in a new gel formulation for use in urogenital applications. Two cyclodextrins, β-cyclodextrin and methyl-β-cyclodextrin, were used for encapsulating lidocaine hydrochloride through solubilization and kneading techniques. The lidocaine-cyclodextrin comple...

Silymarin is a hepatoprotective agent, having poor water solubility and oral absorption of about 23 - 47%, leading to low bioavailability of the drug. The aim of the present study is to improve the solubility and dissolution rate and in turn the hepatoprotective activity of the drug, by formulating its inclusion complex with beta (β)-cyclodextrin, using different methods. The phase solubility a...

The aim of this study was to enhance the apparent solubility and dissolution properties of flurbiprofen through inclusion complexation with cyclodextrins. Especially, the efficacy of supercritical fluid technology as a preparative technique for the preparation of flurbiprofen-methyl-β-cyclodextrin inclusion complexes was evaluated. The complexes were prepared by supercritical carbon dioxide pro...

Nanocomposition comprised of interleukin-2 in suboptimal noneffective concentration and β-cyclodextrin was studied in vitro. This preparation as well as interleukin-2 in optimal concentration was shown to increase natural killer activity to K-562 cells and cytotoxicity of activated peripheral blood mononuclear cells (PBMCs) against PC-3 and DU 145 cells. At the same time β-cyclodextrin or inter...

Capillary electrophoresis using β-cyclodextrin and dimethyl-β-cyclodextrin as chiral selectors was performed in parallel to gas chromatography-mass spectrometry, in an effort to characterize the enantiomeric substances in 557 illicit methamphetamine tablets in Thailand collected during 1983-2000. The study revealed the stimulants in these tablets, namely ephedrine, methamphetamine and caffeine,...

Methyl and ethyl thioether groups were introduced at all primary positions of α-, β-, and γ-cyclodextrin by nucleophilic displacement reactions starting from the corresponding per-(6-deoxy-6-bromo)cyclodextrins. Further modification of all 2-OH positions by etherification with iodo terminated triethylene glycol monomethyl ether (and tetraethylene glycol monomethyl ether, respectively) furnished...

Galangin, a non-toxic phytochemical, is known to have variety of therapeutic uses. This study looked into the role inclusion complexes galangin/β-cyclodextrin in increasing antioxidant activity over pure galangin. The this complex comparison In study, hydrogen peroxide assays were used vitro. Galangin demonstrated concentration-dependent scavenging action 2-50 µg mL-1 range, with highest level ...

In the present work, the sublimation of crystalline solid 2-(2-nitrovinyl) furan (G-0) in the temperature range of 35 to 60 °C (below the melting point of the drug) was studied using thermogravimetric analysis (TGA). The sublimated product was characterized using Fourier-transformed-infrared spectroscopy (FT-IR) and thin layer chromatography (TLC). The sublimation rate at each temperature was o...

in this study, functionalized β-cyclodextrin (β-cd) by aldehyde group was investigated as an oxidase enzyme mimic for the amino phenol oxidation. all calculations were performed by gaussian 09 package using two layers oniom method at the oniom (mpw1pw91/6-311++g(d,p)/uff) level. in the first step, h2o2 is encapsulated in the hydrophobic cavity. in the second step, h2o2 molecule oxidized the ald...

Forming complexes with cyclodextrins can enhance the dissolution rate, the stability, the solubility and the bioavailability of a drug. In this work, piroxicam/β-cyclodextrin complexes were prepared at solid state by means of supercritical carbon dioxide. The influence of temperature, residence time, water content and a ternary agent, L-lysine, were studied. The complex was characterized by Dif...