it has been observed that most of the chemical entities have high lipophilicity and poor aqueous solubility, which result in poor bioavailability. in order to improve the bioavailability, the release behavior of such drugs should be improved. although there are numerous techniques to handle solubility related issue, but they are expensive due to involvement of complicated equipments, advanced m...

a great challenge in using natural polysaccharide as drug delivery system is their fast drug release. the purpose of the present study was to prepare and evaluate chitosan oligosaccharide (cho)-de-estrifiedtragacanth (det) core-shell nanoparticles for controled release of water soluble drugs. cho-det nanoparticles were prepared by microemulsion method and characterized by ft-ir spectroscopy. si...

it has been shown that activated t-cells produce and release both il-2 and il- 2 receptors (ll-2r). the rate of il-2 release is proportional to its cell surface expression and state of cell activation. to clarify the molecular basis of this immunological aberration, we analysed the amount of soluble il-2r(sil2-r) by an elisa technique in 68 patients with behcet's disease (bd), 28 patient c...

objective(s) the aim of this study was to formulate and evaluate microencapsulated controlled release preparations of theophylline using ethylcellulose as the retardant material with high entrapment efficiency. materials and methods microspheres were prepared by water-in-oil-in-oil (w/o1/o2) emulsion-solvent diffusion (esd). a mixed solvent system consisting of acetonitrile and dichloromethane ...

Buccoadhesive drug delivery systems have distinct advantages in comparison with oral administration. Plant exudates like gum or mucilage are being studied for their use as pharmaceutical adjuvant. The aim of this study is to evaluate the properties of the Plantago major seed mucilage as a mucoadhesive agent and propranolol hydrochloride is chosen as a model drug. Mucoadhesive tablets of propran...

preparation and characterization of thermoresponsive in-situ forming poloxamer hydrogel for controlled release of nile red-loaded solid lipid nanoparticles. nanoparticles (nps) are cleared rapidly from systemic circulation and do not provide sustained action in most cases. to solve this problem, this investigation introduces an erodible in-situ forming gel system as potential vehicles for prolo...

     The goal of this study was to prepare and characterize alginate microspheres as an antigen delivery system and adjuvant for immunization against leishmaniasis. Microspheres encapsulated with autoclaved Leishmania major (ALM) and Quillaja saponin (QS) were prepared by an emulsification technique and characterized for size, encapsulation efficiency and release profile of encapsulate...