Posted by admin on Oct 1, 2011 in |
Optically active 1, 5- benzothiazepines belong to the well known benzothiazepine type substances. Some of them possess important bioactivities. In this article, optically active 2, 3-dihydro-1, 5-benzothiazepine derivatives are synthesized by the reaction of new α-β unsaturated carbonyl compounds with 2-aminothiophenol under mild conditions in the presence of silver sulphate in acetonitrile in short reaction time with excellent yield. The structures of newly synthesized compounds were confirmed by spectral evidence and the compounds were evaluated for their anti-bacterial and antifungal activity. All synthesized compounds have shown excellent...
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Posted by admin on Oct 1, 2011 in |
The free radical scavenging potential of blue green algae spirulina platensis (Oscillatoriaceae) was studied by different antioxidant models. Free radicals are implicated for more than 80 diseases including Diabetes mellitus, arthritis, cancer, ageing etc. In the treatment of theses diseases, antioxidant therapy has gained an utmost importance. Current research is directed towards finding naturally occurring antioxidant of plant origin. In Indian system of medicine, blue green algae spirulina platensis is an important medicinal plant and it has been used in various ailments and as health tonic. To understand the mechanisms of pharmacological actions, the in vitro antioxidant activity of ethanolic extract of spirulina platensis was investigated for the activity of scavenging DPPH radical, nitric oxide radical. In all the testing, a significant correlation existed between concentrations of the extract and percentage inhibition of free radicals. These results clearly indicate that blue green algae spirulina platensis is effective against free radical mediated diseases. The data suggests that the extract contains compounds may be effectively utilized as a wide spectrum of...
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Posted by admin on Oct 1, 2011 in |
Primary spinal cord presentation of Primitive neuroectodermal tumors (PNET) is a rare occurrence and carries poor prognosis. A 13-year-old boy presented with pain in neck region, bilateral upper and lower limb weakness and bladder and bowel dysfunction. Neurological examination revealed the marked paresis with hyporeflexia of both the upper and lower extremities. Preoperative MRI of spine revealed an intradural mass at the C2-C5 level. A laminectomy of C2-C5 vertebra level and near total removal of the tumor was performed. Pathological findings were consistent with PNET. Chemotherapy along with radiotherapy was started and good response was observed. The clinical, histopathologic, and radiologic findings of the patient are...
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Posted by admin on Oct 1, 2011 in |
Five Indian Brands (coded as A,B,C,D,E) of 100 mg Nimesulide tablets were evaluated for various In vitro parameters, i.e. size and shape, uniformity of weight, hardness, friability, content, disintegration time and dissolution profile. All the products met the requirements of British Pharmacopoeia for tablet formulation. The hardness of all the brands was found to be in the range of 4.2-4.4 kg, while friability was less than 1 %. The disintegration time of all brands was found to be in the range of 2min 22 sec to 5min 29 sec. All brands comply the B.P weight variation test while brands A, B, C and D comply the B.P dissolution test except brand E. Formulation additives in the tablet, physical form of the drug used in the tablet and manufacturing process vary from manufacturer to manufacturer which is responsible for the variation in the observed dissolution...
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Posted by admin on Oct 1, 2011 in |
Objective: In the present work, the leaves and stems of Kalanchoe pinnata Linn. (Family: Crassulaceae) have been investigated for screening phytochemicals, cytotoxicity and antibacterial activities. Materials and methods: Brine shrimp lethality (BSL) bioassay was used as a pre-screening method for cytotoxic effect. Ethanolic extract of the plant was tested by using this method. The agar disc diffusion method was used for antimicrobial assay of the plant extract. Results: The crude extract produced the most significant cytotoxic activity against brine shrimp Artemia salina (LC50: 100μg/mL and LC90: 204.17μg/mL). The ethanolic extract of Kalanchoe pinnata Linn. showed significant antibacterial activity against gram positive (B. Subtilis, S. aureus) and gram negative (E. coli, P. aeruginosa, S. dysenteriae) bacteria with the zones of inhibition ranging from 6.0±0.35 to 8.2±0.22 mm. The phytochemical screening of the ethanolic extracts of Kalanchoe pinnata Linn. showed the presence of alkaloids, glycosides, steroids, gums, flavonoids, saponins, reducing sugars and tannins. Conclusion: The obtained results provide a support for the use of this plant in traditional medicine. The plant...
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