Posted by admin on Sep 1, 2012 in |
Cefuroxime is a 2nd-generation cephalosporin and Sulbactam is a β-Lactamase inhibitor. The combination formulation is used for the treatment of lower respiratory tract infection. Two new, simple, accurate and precise UV spectrophotometric methods have been developed and validated for the simultaneous determination of Cefuroxime Sodium (CEF) and Sulbactam Sodium (SUL) in their combined dosage forms. First method is based on simultaneous estimation of Cefuroxime at 279nm and Sulbactam at 259 nm, while other Q‐absorption Ratio method using two wavelengths, 259nm (λmax of SUL) and 272nm (Isoabsorptive point). 0.01 N NaOH was the solvent used in all methods. Cefuroxime Sodium showed linearity in the range of 8-32μg/mL and Sulbactam sodium showed linearity in the range of 4-16μg/mL in all the methods. All methods were validated statistically and recovery studies were carried out. All methods were found to be accurate, precise and reproducible. These methods were applied to the assay of the drugs in marketed formulation, which were found in the range of 98.0% to 100.0% of the labelled value for...
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Posted by admin on Sep 1, 2012 in |
Micro bubbles are small spherical type of bubble which consists of a gas, they are separated from each other, so they cannot agglomerates. Actually, they have size range in micrometers usually 1-100 micrometer. They are capable of penetrating even into the smallest blood capillaries & releasing drugs or genes, incorporated on their surface, under the action of ultrasound. Microbubbles in general have a wide variety of applications. They are used as a contrast agent in diagnosis. They are widely applicable in gene delivery due to its very important silent feature. Majorly main huge research is going on drug delivery by microbubble with ultra sound. Most of the physicians today prefer imaging with ultrasound in combination with microbubbles compared to other diagnostic techniques for low cost and...
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Posted by admin on Sep 1, 2012 in |
Metoprolol is a beta1-selective (cardio selective) adrenergic receptor blocking agent used in the treatment of Hypertension. The purpose of this investigation is to improve bioavailability by preparing a gastroretentive drug delivery system. Floating tablets of Metoprolol Succinate were prepared by employing two different grades of HPMC K4M and HPMC E15M in different concentrations by effervescent granulation technique. These grades of HPMC K4M and HPMC E15M were evaluated for their gel forming properties. Sodium bicarbonate was incorporated as a gas-generating agent. The tablets were evaluated for uniformity of weight, hardness, friability, drug content, in vitro buoyancy and dissolution studies. The prepared tablets exhibited satisfactory physicochemical characteristics. All the prepared batches showed good in vitro buoyancy. The tablet swelled radially and axially during in vitro buoyancy studies. It was observed that the tablet remained buoyant for 6-8 hours. A combination of 5:1 sodium bicarbonate and magnesium stearate was found to achieve optimum in vitro buoyancy. The tablets with HPMC K4M and HPMC E15M with drug in the ratio of 1:1:2 were...
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Posted by admin on Sep 1, 2012 in |
Non enzymatic glycation takes place when elevated levels of reduced sugars react with amino groups of proteins and is called as advanced glycation end products (AGEs) are responsible for Diabetes Mellitus. Hydroalcoholic extract of Whitton root (Eulophia nuda) was tested for in-vitro inhibition of non-enzymatic glycation of Immunoglobin G. Plant extracts have their own importance and now being studied extensively due to having little or no side effects in all aspects of life sciences from botany to medicine in biochemical research. In present study Whitton root was selected and used to check the glycation inhibitory activity in-vitro condition. Various combinations of glucose, protein and Whitton root extracts were made under in vitro conditions and their activity was monitored with Trichloro acetic acid treatment method at 350 nm. Glycated products/ AGEs were more with high glucose and high protein concentration and these were decreased by highest concentration of Whitton root extract i.e. 30 mg/mL or 300 μL. Lower concentrations of plant extract produced either no or least response against advanced glycation end products...
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Posted by admin on Sep 1, 2012 in |
Angiogenesis is process of new blood vessel formation that occurs under both normal and pathological conditions. In the normal state, two distinct processes can be seen. One utilizes endothelial progenitor cells (EPC) and the second utilizes existing vasculature to generate new vessels. The healthy body controls angiogenesis through a series of “on” (angiogenesis-stimulating growth factors) and “off” (angiogenesis inhibitors) switches. However, the structures formed are often functionally abnormal; possibly due to an imbalance in the angiogenic process Angiogenesis represents an excellent therapeutic target for the treatment of cardiovascular disease. The healing of damaged tissues urgently required the rapid formation of new vessels which is brought about by various growth factors: VEGF, FGF, PDGF, Angiopoitins and Ephrins. Therapeutic angiogenesis is the clinical use of methods to enhance or promote the development of collateral blood vessels in ischemic, thrombotic, atherosclerotic tissue. This new form of treatment is an alternative to high risk percutaneous coronary intervention or coronary artery bypass surgery. There are three major ways to promote angiogenesis: protein therapy (by...
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