12. September 2018
The amorphous solid dispersion (ASD) technique has been employed to formulate poorly-soluble drugs, however, development of solid dosage forms with ASD is challenging due to the high propensity of amorphous drug to precipitate upon dissolution. Thus this work aimed to explore the potential of controlled release amorphous solid dispersion (CRASD) systems using polyvinyl acetate (PVAc) as a release-retarding excipient to mitigate the drug precipitation during dissolution of poorly water-soluble...
11. January 2018
The oral bioavailability of poorly water-soluble active pharmaceutical ingredients (APIs) can be improved by the preparation of amorphous solid dispersions (ASDs) where the API is dissolved in polymeric excipients. Desired properties of such ASDs like storage stability, dissolution behavior, and processability can be optimized by additional excipients. In this work, the influence of so-called low-molecular-weight excipients (LMWEs) on the phase behavior of ASDs was investigated.
24. September 2017
Abstract Thermoresponsive polymers are a class of smart materials that exhibit change in their physical properties with temperature, which make them unique and useful materials in a wide range of biomedical applications. Soluplus®, a thermoresponsive block graft copolymer with poly(vinyl acetate) PVAc and poly(vinyl caprolactam) PVCL block grafted on a poly(ethelyne glycol) PEG backbone in a ratio of 30:57:13 respectively, is marketed by BASF Corporation, it aids in solubilizing and increasing...
28. August 2017
The objective of the present study was to enhance the solubility, dissolution and hence anti-inflammatory activity of poorly soluble drug indomethacin (IMN) by formulating into self emulsifying systems.
24. April 2017
Abstract Reducing the promiscuous tropism of native adenovirus by using fiberless adenovirus is advantageous towards its use as a gene therapy vector or vaccine component. The removal of the fiber protein on native adenovirus abrogates several undesirable interactions; however, this approach decreases the particle’s physical stability. In order to create stable fiberless adenovirus for pharmaceutical use, the effects of temperature and pH on the particle’s stability profile must be...
09. February 2017
Abstract The effects of propellant type, cosolvent content, and air humidity on the morphology and solid phase of the particles produced from solution pressurized metered dose inhalers containing the corticosteroid beclomethasone dipropionate were investigated. The active ingredient was dissolved in the HFA propellants 134a and 227ea with varying levels of the cosolvent ethanol and filled into pressurized metered dose inhalers. Inhalers were actuated into an evaporation chamber under controlled...
25. July 2016
Abstract Edible films from the blending hydroxypropyl methylcellulose (HPMC) with hydroxypropyl starch (HPS) have been developed. This work focuses on the relationship between morphologies and mechanical properties of such systems. To aid understanding of blend morphology, a new technique used to identify the two phases through dying of the HPS by iodine has been developed, which provided a simple and convenient way to clearly distinguish between HPMC and HPS phases. It was found that the blend...
06. July 2016
ABSTRACT The main objective of this study was to prepare a solid self micro-emulsifying drug delivery system (S-SMEDDS) by spray drying liquid SMEDDS with an inert solid carrier Aerosil 200 to improve the dissolution rate and permeability of Chlorthalidone (CTD). The liquid SMEDDS was composed of CTD, oleic Acid, Tween 20, PEG 200. Preliminary screening was carried out to select proper components combination. Solubility of Chlorthalidone was determined in various vehicles. Ternary phase diagram...
25. May 2016
Abstract: The main aim of the present work was to develop colon specific piroxicam loaded alginate microspheres intended for the treatment of rheumatoid arthritis. A multiparticulate system with a combined property of pH sensitive and biodegradability was developed. Piroxicam microspheres were prepared by using ionotropic gelation technique and coated by using coacervation phase separation method using different ratios of eudragit S100 which is a pH sensitive polymer. Both coated and uncoated...
06. May 2016
The aim of present study was to develop the Lacidipine oral disintegrating tablets (LCDP ODTs), thereby enhancing the solubility and dissolution rate. Solubility was enhanced by solid dispersion technology using hydrophilic carriers like Hydroxy Propyl Methyl Cellulose Acetate Succinate (HPMCAS), β-Cyclodextrin BCD), Polyethylene Glycol 6000 (PEG 6000) and it was confirmed by phase solubility studies. LCDP ODTs were prepared by using super disintegrants like Croscarmellose Sodium (CCS),...