Targeted drug-delivery systems are used for the administration of pharmaceutical medicament enables localization drugs to diseased sites. Different types uses carriers, like immunoglobulins, serum proteins, synthetic polymers, liposomes, nanoparticle and microspheres. Niosomes an emerging type novel vesicular systems. Now they being fervent explored as potential carriers targeted drug delivery....

A mathematical model for targeted drug delivery using magnetic particles is developed. This includes a diffusive flux of particles arising from interactions between erythrocytes in the microcirculation. The model is used to track particles in a vessel network. Magnetic field design is discussed and we show that it is impossible to specifically target internal regions using an externally applied...

Targeting drugs to specific organs, tissues, or cells is an attractive strategy for enhancing drug efficacy and reducing side effects. Drug carriers such as antibodies, natural and manmade polymers, and labeled liposomes are capable of targeting drugs to blood vessels of individual tissues but often fail to deliver drugs to extravascular sites. An alternative strategy is to use low molecular we...

An ideal drug delivery system will possess three main properties: (a) It will be a single dose for the whole duration of treatment. (b) It will deliver the active drug directly at the site of action. (c) It will possess possible fewer side effects. Above approaches are achieved with the help of suitable choice of polymer. When it comes to targeted drug release profiles, Eudragit is the pharmace...

Liposome is colloidal, vesicular structures capable of targeting to specific sites. Evans blue dye (hydrophilic dye) were formulated in liposomes using phosphatidyl choline, cholesterol and those liposomes were modified using surfactants surfactants span 20 , span 40 , span 80 or tween 80 at various molar ratio and optimized for its stable vesicular formation. The particle size and FTIR analysi...

Although oral delivery has a become a widely accepted route of administration of therapeutic drugs, the gastrointestinal tract presents several formidable barrier to drug delivery. The delivery of drugs to the colon has a number of therapeutic implications in the field of drug delivery. In the recent times, the colon specific drug delivery system is also gaining importance not only for local dr...

A sperm-driven micromotor is presented as a targeted drug delivery system, which is appealing to potentially treat diseases in the female reproductive tract. This system is demonstrated to be an efficient drug delivery vehicle by first loading a motile sperm cell with an anticancer drug (doxorubicin hydrochloride), guiding it magnetically, to an in vitro cultured tumor spheroid, and finally fre...

Nanocrystals are pure drug crystals with sizes in the nanometer range. Due to the advantages of high drug loading, platform stability, and ease of scaling-up, nanocrystals have been widely used to deliver poorly water-soluble drugs. Nanocrystals in the blood stream can be recognized and sequestered as exogenous materials by mononuclear phagocytic system (MPS) cells, leading to passive accumulat...

Drug delivery systems involve technology designed to maximize therapeutic efficacy of drugs by controlling their biodistribution profile. In order to optimize a function of the delivery systems, their biodistribution characteristics should be systematically understood. Pharmacokinetic analysis based on the clearance concepts provides quantitative information of the biodistribution, which can be...