Current Drug Delivery - Volume 8, Issue 5, 2011

The aim of the current study was to develop osmotically controlled release system of freely water soluble drug phenylephrine hydrochloride by use of asymmetric membrane capsules to reduce the dosing frequency and consequently improve the patient compliance. Ethyl cellulose asymmetric membrane capsules were developed by phase inversion process and solubility modulation was accomplished by common ion effect whe Read More

Depression is a common mental disorder discerns with depressed mood, loss of interest, the primary treatment methods are drug therapy, electroconvulsive therapy, psychotherapy, light therapy, vagus nerve stimulation, etc. A number of innovative delivery systems have been developed to address suboptimal therapy outcomes by enhancing drug delivery, assuring efficacy of treatment, reducing side effects, i Read More

Oral delivery of the drug is the most preferable route of drug delivery due to the ease of administration, patient compliance and flexibility in the formulations. Recent technological advancements have been made in controlled oral drug delivery systems by overcoming physiological difficulties, such as short gastric residence time and highly variable gastric emptying time. Gastroretentive dosage forms have been designed over t Read More

Quick-release bromocriptine (bromocriptine-QR) (Cycloset) was approved in 2009 for the treatment of type 2 diabetes. The exact anti-diabetic mechanism of action of bromocriptine-QR has not been elucidated, but the drug may help resetting the circadian dopamine signal. Randomized placebo-controlled trials showed that the mean reduction in hemoglobin A1c (HbA1c) levels by bromocriptine-QR was 0.0-0.2% when co Read More

Polymers have become an indispensable part in the design of a conventional as well as novel drug delivery system. Gum Copal (GC), a novel biomaterial obtained from Agathis species, is evaluated in the present study for its potential application as a matrix former in transdermal drug delivery systems. GC was initially characterized for various physicochemical properties and then mechanical characterization of the Plas Read More

The ability of peptide nucleic acids (PNA) to enter and to cross filter-grown MDCK, HEK and CHO cells was studied by means of a protocol based on capillary electrophoresis combined with laser-induced fluorescence detection. The used approach avoided possible errors encountered in protocols based on confocal laserscanning microscopy and FACS analysis. In contradiction to the commonly anticipated unability of PNA to cross b Read More

Percutaneous coronary intervention (PCI) has become a highly effective alternative for the treatment of coronary artery disease. The use of stents has reduced the rates of restenosis by preventing elastic recoil and negative remodeling, however neointima formation still remains an issue. Local drug delivery is an attractive option to maintain effective drug concentrations at the site of arterial injury without risking systemic toxicit Read More

The purpose of this work is to characterize microchannels created by polymeric microneedles, applied by hand, and to demonstrate enhanced delivery of topically applied formulations of lidocaine hydrochloride and methylprednisolone sodium succinate (MPSS). 3M's Microstructured Transdermal System (MTS) arrays were applied to domestic swine to demonstrate reliability of penetration, depth of penetration and du Read More

The present work is aimed to develop new oral drug delivery systems of 5-fluorouracil for the treatment of colorectal cancer by using hydrophilic swellable polymer hydroxy propyl methyl cellulose (HPMC) and pH responsive soluble polymer Eudragit L100 (ED) as coating materials. Core tablets containing 50mg of 5-fluorouracil were prepared by direct compression. The core tablets compression coated with different ratios (9:1, Read More

The aim of this study was to develop a novel colon targeted matrix tablet containing Metronidazole (MTZ) as model drug. Matrix tablets were prepared using Assam Bora rice starch, which is essentially a natural polymer, by wet granulation technique. The granules prepared were subjected to evaluation for angle of repose, bulk density, compressibility index, Hausner's ratio, total porosity, and drug content. The developed ta Read More

A novel approach in target specific molecular prototype drug delivery system concerns the attempt to employ radical affording substances (RAS) or radical quenching substances (RQS) as prodrugs able to produce irreversible damage on the desired target and therefore to stimulate cellular apoptosis. However, radical species generated can react quickly within the chemical environment prior to reaching its proper site of acti Read More

The present review provides an insight into various potential areas of dentistry that are being invaded by nanotechnology based drugs and drug delivery systems. Current treatments for diseases of dental and oral structures rely on the use of classical pharmacological agents which, in some cases are limited by low efficacy and lack of selectivity to target cells. However, various nanostructures in drug delivery and their challe Read More