Posted by admin on Aug 31, 2016 in |
Pharmacogenomics (constitute both branch i.e pharmacology and genetic) is the study of the role of genetics in drug response. It deals with the effect of genetic variation on drug response in patient by correlating the gene expression with the pharmacokinetic parameter i.e absorption, distribution metabolism and excreation. The Pharmacogenomics is used in the research to increase the safety and efficacy of the drug by targeting the drug at the particular site of genes. Pharmacogenetic also play important role in the study of effect of multiple genes in the pharmacological action of drugs. In Pharmacogenomics we identify and study about various component of the genes that affect the therapeutic of the drug. Most of the drugs fail to show therapeutic effect at the latter stages it may be due to unexpected adverse effect of drug that may be due to the effect of various component of genes. Pharmacogenetic studies can be used at various stages of drug development. In clinical studies, pharmacogenetic can be used in stratification of patient based...
Read More
Posted by admin on Aug 31, 2016 in |
Millions of people today use herbs either as food or in the form of medicine along with prescription and non prescription medications. Although considered natural and safe, many of these herbs can interact with other medications, causing either potentially dangerous side effects and/or reduced benefits from the medication. Both pharmacokinetic and pharmacodynamic mechanisms are involved in these interactions and majority of the herb-drug interactions were found to be mediated by metabolic inductions or inhibitions. It should be understood that herbal preparations contain multiple active phytochemicals in varying proportions which can, like any other active pharmacological substance, alter the enzymatic systems, transporters and/or the physiologic processes. The purpose of this review is to discuss evidence based mechanisms and clinical implications of such herb-drug interactions and to increase awareness on herb-drug interactions by reviewing published clinical and preclinical studies. As the incidence and severity of herb-drug interactions is increasing due to a worldwide rise in the use of herbal preparations, more clinical data regarding herb-drug interactions are needed to make decisions...
Read More
Posted by admin on Jul 31, 2016 in |
The quality of medicines depends not only on the active principles and production processes, but also the performance of the excipients, hence we say’ Excipients are Cindrellas of Formulation’. The traditional concept of the excipient as any component other than the active substance has undergone a substantial evolution from an ‘inert’ and cheap vehicle to an essential constituent of the formulation. The rapid evolution of scientific, regulatory and economic factors, the introduction of delivery systems and the advance in biopharmaceutics have led to a new interest in the role and functionality of the excipients. There are number of raw materials available from a multitude of sources used in pharmaceutical industry where their chemical structures vary from small polymer to long chain polymer. Excipients are now chosen to perform a variety of functions which guarantee the stability and bioavailability of the drug substance and its manufacturability on a large production scale. Beyond the dosage form necessities, excipients particularly in the case of solid dosage forms are used. As a consequence,...
Read More
Posted by admin on Jul 31, 2016 in |
Oral route of drug delivery is the simplest and most accepted way of administration of drugs due to greater stability, high patient compliance, accurate dosage, cost effectiveness and high patient compliance of drugs. But with oral formulations bioavailability is the major problem for newly discovered drug because 40 percent are lipophilic compounds. There are several factors responsible for low oral absorption of hydrophobic drugs and one very particular one is poor absorption due to slow and/or incomplete drug dissolution and precipitation in the gastro-intestinal lumen or other aqueous media. Therefore in order to be delivered orally and to achieve acceptable bioavailability, lipophilic drugs require a co-administered drug delivery system. This article mainly gives overview of technologies available with special emphasis on mechanism of SEDDS and potential for commercialization of formulation as compared to other technologies along with examples. But there are certain disadvantages of SEDDS like lack of good predicative in vitro models for assessment of the formulations and higher concentrations of surfactant used may cause some allergic reactions....
Read More
Posted by admin on Jul 31, 2016 in |
Nigella sativa seed is one of the spices, which is referred by Prophet Mohammed as a herb of blessing, which can cure everything other than death. Therapeutic potential of Nigella sativa seed has been very well studied by many researchers, but its use in cosmetic science is not very well studied. Nigella sativa seed is intensively studied for its chemical composition. It is reported to contains Thymoquinone, Nigellimine-N-oxide, Nigellicine, Nigellidine, Nigellone, Dithymoquinone, Thymohydroquinone, Thymol, Arvacrol, 6-methoxy-coumarin, 7-hydroxy-coumarin, Oxy-coumarin, Alpha-hedrin, Steryl-glucoside, Tannins, Flavinoids, Essential fatty acids, Essential amino acids, Ascorbic acid, Iron and calcium. Presence of these natural actives makes Nigella sativa seed as great medicinal herb. Nigella sativa seed has antimicrobial, antioxidant, anti-aging, hair growth promoter, sun protection, anti cancer activity, which make it a novel ingredient for many cosmetic preparations. This review brings the comprehensive compilation of researches on Nigella sativa seed in the area of cosmetics and related...
Read More
