Pharmacology Articles

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ABOUT AUTHORS:
K.Charan
A.U.College of Pharmaceutical Sciences,
Waltair, Visakhapatnam, Andhra Pradesh, India.
charan.karumuri@gmail.com

ABSTRACT
The present study was designed to screen anti-depressant activity of Hydro alcoholic extract of Triticum Aestivum using Chronic models (14 day study) of Tail suspension test (TST) and Forced Swim Test (FST) in Swiss Albino rats. Wheat grass were collected and authenticated. Extraction of dried wheat grass was carried out using a Soxhlet apparatus to obtain its Hydro alcoholic extract. The extract of Triticum Aestivum showed the significant anti-depressant activity comparable to the standard drug. The oral administration of Triticum Aestivum extract at doses 200 mg/kg & 400 mg/kg respectively as compared to the control treated group showed an anti-depressant activity comparable to that of standard drug.
The anti-depressant effects of Triticum Aestivum extract seem to be mainly associated with the activation of dopaminergic system and possess potential anti-depressant activity.

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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.