the combustion of sulfur-rich fossil fuels leads to the release of acid rain-causing sulfurdioxide into the environment. the aim of this study was to enhance the efficiency of biodesulfurizationusing pseudomonas aeruginosa through the duplication of the dsz cluster in this organism. one copy ofthe dsz cluster was inserted by a tri-parental mating method into the chromosome of pseudomonasaerugin...

low molecular weight heparin-modified isoliquiritigenin-loaded solid lipid nanoparticle (lmwh-isl-sln) was developed for injective application. the morphological observation, particle diameter and zeta potential of lmwh-isl-sln were characterized using transmission electron microscopy (tem) and a malvern zetasizer. its entrapment efficiency (ee) and drug loading (dl) were determined by ultracen...

chemotherapy research highly prioritizes overcoming the multidrug resistance (mdr) in human tumors. liposomal formulation of fluoxetine, as a fourth generation chemosensitizer, was constructed and characterized for percent entrapment, release profile, morphology, particle size, zeta potential and stability. liposomes were prepared using different active loading techniques. the influence of diff...

solid lipid nanoparticles (slns) have emerged as an alternative colloidal carriers for sustained release of lipophilic drugs with poor absorption and water solubility. this manuscript describes the effect of process variables on the production of solid lipid nanoparticles (slns) from beeswax and carnauba wax and ketoprofen release from these carriers. it was found that by increasing drug conten...

Metformin hydrochloride, a drug group of biguanides, with significant efficacy in the treatment of diabetes type II, is decomposed before reaching to the stomach and is wasted in great losses. In this study, the nanoliposomes of metformin hydrochloride were prepared with Bingham method. At first, the single factor test is done. Design variables are: lecithin to cholesterol ratio, organic solven...

Metformin hydrochloride, a drug group of biguanides, with significant efficacy in the treatment of diabetes type II, is decomposed before reaching to the stomach and is wasted in great losses. In this study, the nanoliposomes of metformin hydrochloride were prepared with Bingham method. At first, the single factor test is done. Design variables are: lecithin to cholesterol ratio, organic solven...

background: progress in the field of biology and biochemistry has led to the discovery of numerous bioactive peptides and proteins in the last few decades. delivery of therapeutic proteins/peptides has received a considerable amount of attention in recent years. methods: in this study, a two-step desolvation method was used to produce biodegradable hydrophilic gelatin nanoparticles (gnp) as a d...

Microencapsulation has become a common technique in the production of controlled release dosage forms. Many results have been reported, concerning the use of alginate beads as controlled release drug formulations. Alginate has a unique gel-forming property in the presence of multivalent cations, in an aqueous medium. Ibuprofen is an excellent analgesic and antipyretic, non-steroidal anti-inflam...

The present investigation was aimed at developing a novel colon targeted system of lornoxicam based on the use of a combination of pH dependent system (to prevent the premature release of drug in the upper GIT) and enzymatically degradation system (to ensure the specificity of drug release in the colon). The drug loaded guar gum microspheres prepared by emulsification cross-linking method were ...

Microspheres formulated from poly (D,L-lactic-co-glycolide) (PLGA), a biodegradable polymer, have been extensively evaluated as a drug delivery system. In this study, the preparation, characterization and drug release properties of the PLGA microspheres were evaluated. Simvastatin (SIM)-loaded PLGA microspheres were prepared by oil-in-water emulsion/solvent evaporation method. The microspheres ...