Posted by admin on Mar 1, 2012 in |
The recent advancement of nasal drug delivery systems has increased enormously and is gaining significant importance. Intranasal therapy has been an accepted form of treatment in the Ayurvedic system of Indian Medicine. The non-invasive delivery of nasal drug delivery systems made to exploit for the development of successful treatment. The advantages, disadvantages, mechanism of action and application of nasal drug delivery system in local delivery, systematic delivery, nasal vaccines and CNS delivery are explained lucidly. The relevant aspects of biological, physicochemical and pharmaceutical factors of nasal cavity that must be considered during the process of discovery and development of new drugs for nasal delivery as well as in their incorporation into appropriate nasal pharmaceutical formulations are also discussed. Nasal route is more suitable for those drugs which cannot be administered orally due to gastric degradation or hepatic first pass metabolism of the drug. Intranasal drug delivery is found much promising route for administration of peptides and protein drugs. Much has been investigated and much more are to be investigated...
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Posted by admin on Mar 1, 2012 in |
Article reviews the research focus on potential opportunities and challenges available in new area of colon targeted drug delivery system. Colon was considered as “BLACK BOX” as, most of drugs are absorbed from upper part of GIT tract. Targeted drug delivery to the colon would ensure direct treatment at the disease site, lowering of dose and lesser systemic side effects. In addition, the colon can also be utilized as a portal for the entry of drugs into the systemic circulation. This review, mainly compares the primary approaches for CDDS (Colon Specific Drug Delivery) namely pro drugs, pH and time dependent systems, and microbially triggered systems, which achieved limited success and had limitations as compared with newer CDDS namely pressure controlled colonic delivery capsules, CODESTM, and osmotic controlled drug delivery which are unique in terms of achieving in vivo site specificity,and feasibility of manufacturing...
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Posted by admin on Mar 1, 2012 in |
Nootropic drugs used as a memory enhancer can improve thinking, memory, and alertness in people with Alzheimer’s disease andother disease that affect the mind. Memory is perhaps the most vital of all aspects that differentiates human beings from other animals. However, memory can become faulty due to several reasons, and in that case the person is not able to make full use of his or her potentials. Since ages, drugs and natural remedies have been prescribed to enhance memories in people. 4 million people are thought to be suffering from age related memory and increased risk of developing Alzheimer’s disease. Although several nootropic drugs are available to treat memory problems. In recent years research on medicinal plants have been studied for nootropic activity. Bacopa monnieri (Brahmi), Evolvulus alsinoides (Shankhpushpi), Withania somnifera (Ashwagandha), Acorus calamus (Bach)etc., are used as a memory enhancer drugs. The abstract refers to several plants with their activity. The main aim of this article is to give up the data reviews on plants with nootropic...
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Posted by admin on Feb 1, 2012 in |
In recent times, focus on plant research has increased all over the world and a large body of evidence has collected to show immense potential of medicinal plants used in various traditional systems. Use of plant based drugs and chemicals for curing various ailments and personal adornment is as old as human civilization Clitoria ternatea is used for curing various diseases and symptoms. Clitoria ternatea is diuretic and laxative, a decoction is given as a demulcent in the irritation of the bladder and urethra. It is useful in ophthalmopathy, bronchitis, asthma tubercular glands, hemicrania, burning sensation, starngury, helminthiasis, inflammation, vitiated condition of pitta vicerormegaly and...
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Posted by admin on Feb 1, 2012 in |
Novel drug delivery system has been introduced to overwhelm the drawback of fluctuating drug levels associated with conventional dosage forms. Out of various cellular carrier systems, erythrocytes (red blood cells, RBC) have been the most widely investigated and found to possess great potential for the delivery of drugs and drug-loaded microspheres. These cellular carriers, having remarkable biocompatibility, biodegradability, and life-span in circulation, can be loaded by a wide spectrum of compounds of therapeutic value using different chemically, as well as physically, based methods. Most of the characteristics of the erythrocytes, including shape, membrane fragility, deformability, and hematologic indices undergo some degree of irreversible changes during the loading procedure. Carrier erythrocytes are prepared simply by collecting blood sample from the organism of interest, separating erythrocytes from plasma, then by using various physical and chemical methods the cells are broken. The drug is entrapped into the erythrocytes and finally resealing the resultant cellular carriers. Hence these carriers are suitably known as Resealed erythrocytes. Surface modification with glutaraldehyde, antibodies, carbohydrates like sialic...
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