May 2014

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Retired Armed Forces personnel till 2002 could avail medical facilities only for specific high cost surgery/treatment for a limited number of diseases covered under the Army Group Insurance(Medical Branch Scheme) (AGI(MBS)) and Armed Forces Group Insurance Scheme(Management Information System) (AFGIS (MIS)) schemes. These medicare schemes could provide some relief to the ESM, but it was not a comprehensive scheme as compared to and available for other Central Government Employees. Therefore, the requirement was felt of establishing a medicare system which could provide quality medicare to the retirees of the Armed Forces.

ECHS invites application to engage the following staff on contractual basis at for current financial year, renewable for additional period:

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ABOUT AUTHOR
Sagar Vishwanath Sonawane*
Dept. of Pharmaceutical Sciences and Technology,
Institute of Chemical Technology,
Matunga, Mumbai, Maharashtra, India.
*sssagarvs@gmail.com

ABSTRACT
Brain is the highly protected organ of the body by the sanctuary known as blood brain barrier (BBB). BBB comprises of tight junctions formed by the closed fenestration network of astrocytes, pericytes microglial cells and endothelial cells. Thus it is very difficult for drug molecules to cross BBB. Thus various approaches are discussed to overcome this barrier. Disruption of BBB was conventional invasive approach. The permeability of BBB increases in various diseases. This increased permeability of BBB is made use for drug trafficking. With advances in nanotechnology, various nanocarrier systems including Polymeric nanoparticles, Micelle, Dendrimer, Liposomes, Solid lipid nanoparticles, Nanostuctured lipid carriers, nanogels, etc. emerged as potential delivery systems.
Administration of inhibitors of p-glycoprotein with drug is another approach. Making lipophilic prodrugs of active drug substances can also be done.
Recently PEGylation of nanoparticles can be done to improve its half life in the body, known as the stealth technology. Further various receptor mediated processes are made use of for transport of nanocarrier across BBB. In this method the nanocarrier is attached to the targeting ligand thus making it receptor specific. The newer concept of molecular Trojan horses is also discussed. Finally the advantages of intranasal drug delivery are emphasized.