Posted by admin on Aug 31, 2016 in |
Enhanced production of anthraquinones from cell suspension cultures of Oldenlandia umbellata were established through elicitor or precursor treatment. Stock cell suspension cultures were developed in liquid MS medium supplemented with 2.5 µM NAA using friable calli. Standardization experiments of suspension cultures revealed that 10 µM NAA added liquid MS medium was optimum for the growth and AQ accumulation from O. umbellata suspension cultures. 10 µM NAA produced 9.96 mg g -1dw AQ on 30th day of incubation. Later enhanced AQ production was achieved by the addition of elicitors or precursors into the standardized media on 25th day of incubation and AQ quantification was done after 5 days of incubation. Addition of elicitors or precursors resulted in a sudden increase in AQ content. 25 mg L-1 pectinadded suspension cultures produced 35.67 mg g-1dw AQ and precursor feeding with 50 mg L-1α-keto glutaric acid resulted in the accumulation of 42.63 mg g-1dw AQ. HPLC analysis of elicitor or precursor mediated suspension cultures revealed the presence of alizarin and purpurin in samples....
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Posted by admin on Aug 31, 2016 in |
Two chalcone diols (2E)-1-(4-hydroxyphenyl)-3(4-hydroxy, 3-ethoxy phenyl) prop-en-1-one and (2E)-1-(4-hydroxy-3-methoxy phenyl)-3(4-hydroxy, 3-ethoxy phenyl) prop-en-1-one were synthesized by acid catalyzed ClaisenSchmidt reaction. The synthesized chalcones were made to undergo polymerization using three aliphatic dichlorides namely glutaryl, succinyl and oxalyl chlorides. The polymers were random copolyesters and characterized by solubility and viscosity measurement. The structure of the copolyester was established by FTIR, 1H-NMR and 13C-NMR. The biocidal efficacy was done by Disc diffusion method and found to be nominal against the standards used. Thus these copolyesters may be considered as drug...
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Posted by admin on Aug 31, 2016 in |
Herbal immunomodulator is substance which stimulates or suppresses the components of immune system including both innate and adaptive immune responses. The modulation of immune system by various medicinal plant products has become subject for scientific investigations currently worldwide. A number of Indian medicinal plants and various ‘Rasayana’ have been claimed to possess immunomodulatory activity. Some of these plants are, Allium sativum, Morus alba, Acacia catechu, Tinospora cordifolia, and Mangifera indica. A lot more are still to be explored and offer scope for further...
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Posted by admin on Aug 31, 2016 in |
An antibiotic may be defined as a substance or compound that kills or inhibits the growth of, bacteria. Antibiotics belong to the broader group of antimicrobial compounds, used to treat infections caused by microorganisms, including fungi and protozoa, viruses. Antibiotic de-escalation is a mechanism whereby the provision of effective initial antibiotic treatment is achieved while avoiding unnecessary antibiotic use that would promote the development of resistance. The embodiment of de-escalation is that based on microbiology results around the day 3 therapy point; the empiric antibiotic(s) that were started are stopped or reduced in number and/or narrowed in...
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Posted by admin on Aug 31, 2016 in |
For human survival, vision or sight is extremely important. Ocular drug delivery has been a major challenge to pharmacologists and drug delivery scientists due to its unique anatomy and physiology. There are both conventional and novel drug deliveries available as topical administration for the treatment of diseases related to the eye. Conventional dosage form includes ophthalmic solutions, suspensions, ointments, gels, inserts etc. Novel dosage form includes microemulsions, nanosuspensions, dendrimers, niosomes, liposomes etc. Novel drug delivery systems provide increased bioavailability of the drug compared to that of conventional drug delivery system. Current developments in the field of ophthalmic drug delivery promise a significant improvement in overcoming the challenges posed by various anterior and posterior segment diseases. Here in this article, we are going to discuss about the anatomy of the eye, the most common disorders of the eye, and the conventional and novel formulation approaches for ophthalmic drug delivery and the current market...
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