Posted by admin on Jul 1, 2013 in |
Multiparticulate drug delivery systems like pellets, granules, micro particles, minitablets etc., prove to be promising and highly flexible systems with ease of formulating with different drug release kinetics. These multiparticulate dosage forms are essential where drug-excipients or drug-drug physicochemical interactions are possible in a single-unit formulation. In present times, pelletization technologies are gaining much attention as they represent an efficient pathway for manufacture of oral drug delivery systems. Pelletization is an agglomeration process that converts fine powders or granules of bulk drugs and excipients into small, free flowing semi-spherical units. Pellets, being multiparticulate systems, are widely used due to the technological as well as therapeutic advantages over single-unit dosage forms. The present review focus on advantages, disadvantages, formation of pellet growth, different pelletization techniques, characterization, marketed pellets products and also outlines recent developments in the pharmaceutical approaches that have been used to prepare pelletized dosage forms with different techniques like Hot Melt Extrusion-Spheronization, Freeze and Cryopelletization, Microtabletting...
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Posted by admin on Jul 1, 2013 in |
Biosimilars are defined as officially approved new version of innovator bio-therapeutic products for which the patent has expired. Biosimilars the ‘generic’ versions of biopharmaceuticals, continue to enter Indian pharmaceutical market, to treat a variety of diseases. Biosimilars available in India include monoclonal antibodies for treating various malignant and immunological disorders, growth factors like erythropoietin and granulocyte colony stimulating factor (G-CSF), human insulins for treating diabetes mellitus etc. In the recent scenario, there is an increasing demand for biological drugs. The development and production of biosimilars are boosted by existing manufacturing technology. Due to no investment in phase I-II of clinical trials, biosimilars are available at cheaper prices than the reference products, so that it has low market risk. The main goal of this review is that the phase I-II trials are typically not required for biosimilar approval unless it is found necessary in special cases. Phase III trials with a minimum of 100 patients are mandatory for establishing bioequivalence. Therefore, the total cost to develop a biosimilar in India...
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Posted by admin on Jun 1, 2013 in |
The new Ru (II) complex [Ru(4-Et-py)4(dppz)]2+ (dppz = dipyrido phenazine) have been synthesized and characterized by different analytical techniques like elemental analysis, LC-MS, 1H NMR , 13C NMR. The interaction of this complex with calf thymus DNA has been explored by U.V. absorption spectroscopy, Fluorescence measurements, and viscosity measurements. Their photocleavage behavior towards pBR 322 and anti-bacterial properties of this complex was also investigated. The experimental results show that the complex binds with DNA by intercalation...
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Posted by admin on Jun 1, 2013 in |
Topical corticosteroids have long been the chronic stage in the treatment of steroid responsive dermatitis. Creams containing 0.05% w/w Clobetasol-17-propionate (CP) as active ingredient are categorized as super potent class I topical dermatological corticosteroids. For the drug molecule to reach the cutaneous microcirculation, enhance, the systemic circulation, have to transverse both the lipophilic stratum cornium and much more viable epidermis. Penetration enhancers are thought to intact with one component of skin causing the stratum cornium to swell or leach out some of the structural component their by increasing the drug penetration to the barrier membrane. The current study was carried out to study the effect of various penetration enhancers such as oleic acid (OA), isopropyl myristate (IPM), polysorbate 80 (PS) and thymol (TM) on topical delivery of Clobetasol-17-propionate (CP) and was evaluated in-vitro using cellophane membrane as well as rat skin mounted in Franz diffusion cell. CP was analyzed spectrophotometrically at 240 nm. The efficiency of penetration enhancers to improvise topical delivery of CP was observed in the order...
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Posted by admin on Jun 1, 2013 in |
A simple, specific, precise, and efficient method for the Simultaneous estimation of Metformin HCl and Voglibose tablet by a Reverse Phase-High Performance Liquid Chromatography method is developed and validated. Selected mobile phase were in a combination of acetonitrile: buffer pH- 6.5 in the ratio of 62:38. Optimized column is a stainless steel column packed with base octa decylsilyl silica gel of 250X4.6mm and at 254 nm wavelength for metformin and Voglibose detection by Spectrofluorimeter and excitation wavelength at 350nm and emission wavelength at 430nm. In our study, the validation of analytical method for determination of Metformin and voglibose tablet formulation was performed in accordance the parameters including-system suitability, specificity, linearity of response, accuracy, precision (reproducibility & repeatability), robustness (change of wave length±2 nm). The method is validated according to ICH...
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