Posted by admin on Aug 1, 2012 in |
The peroxisome proliferator-activated receptor gamma (PPARγ) agonist rosiglitazone has recently been withdrawn from the European market and its use has been restricted in the US due to its undesirable effects which were considered to outweigh its benefits. Literature indicates that there are two agonist bound conformations of the PPARγ as exemplified by its binding to rosiglitazone (PDB ID; 1FM6) and to farglitazar (PDB ID; 1FM9). This study aims to explore these two conformations, and to evaluate whether they should be targeted separately in the context of drug design studies. Furthermore, it was aimed to design a series of molecules with the potential to act as leads in a drug design process and the capability of agonist activity at the PPARγ with an acceptable side effect profile. In silico ligand binding affinities (pKd) of rosiglitazone and farglitazar within their cognate receptors were 6.62 and 9.70 respectively. The farglitazar conformer that bound optimally within the rosiglitazone bound PPARγ ligand binding pocket was identified and its binding affinity (pKd) re-determined. An analogous...
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Posted by admin on Aug 1, 2012 in |
In the present study, Phytochemical and in vitro Antioxidant potential of aqueous leaf extracts of Brassica juncea and Coriandrum sativum leaves was determined qualitatively. The Phytochemical screening of plants studied showed the presence of terpenoids, flavonoids, tannin and reducing sugar in aqueous extract of Brassica juncea. Alkaloids and glycosides were absent in it. Aqueous extract of Coriandrum sativumshowed the presence of tannins, terpenoids, reducing sugars, flavonoids, and glycosides and alkaloids were absent in aqueous extract of Coriandrum sativum. It had been found that among the aqueous extracts ofBrassica juncea and Coriandrum sativum, the highest activity of Catalase was observed inaqueous extract of Brassica juncea than in aqueous extract of Coriandrum sativum. The peroxidase activity was observed to be low in aqueous extract of Brassica juncea. The value of ascorbate oxidase activity andVitamin C content was high in aqueous extract of Coriandrum sativum.The main purpose of the study is to evaluate phytochemicals and antioxidant activity of used...
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Posted by admin on Aug 1, 2012 in |
Cancer is one of the leading causes of mortality worldwide. Many of the cucurbitaceae plants traditionally reported to possess antitumor activity. The present study was carried out to evaluate the anticancer activity for different extracts of Lagenaria siceraria Fruit. The present research work had carried out on laboratory level assay to avoid the use of different animal models. Preliminary phytochemical tests of successive extraction of Lagenaria siceraria fruit powder had performed to find out the different chemical moieties as per standard procedures. Preliminary anticancer screening by exposure of different extracts on Onion Root model was carried out to find out the lead extract which showed the promising cell growth inhibitory activity. The antimitotic assay by onion root method was selected because this is easy to done and give fastest promising results. Onion was selected for the antimitotic assay which shows the root growth inhibition that compared with standard antimitotic drug (Colchicine100PPM and 100 PPM). n-butanol extract of Lagenaria siceraria fruit powder shows most promising anticancer activity than other extracts...
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Posted by admin on Aug 1, 2012 in |
Panchagavya, a classical Ayurvedic preparation, was evaluated for its antioxidant potential by HPTLC-DPPH bioautography method as well as assays for Ferric reducing antioxidant power (FRAP), DPPH – free radical scavenging activity (DPPH) and Superoxide radical scavenging activity. In addition total phenolic content was also estimated which was in fairly good amount. HPTLC-DPPH bioautography study revealed the presence of several antioxidant compounds in Panchagavya. In all the assays performed, it showed considerable antioxidant activity. On comparison of the data of three different batches of the samples studied, it showed 98.3 – 99.8% correlation between total phenolic content, FRAP and DPPH...
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Posted by admin on Aug 1, 2012 in |
The present study was designed to evaluate the anti ulcer effect of Basella alba in aspirin induced ulcerated rats. Aspirin induced ulcer was revealed by increased ulcer index, decreased gastric pH, increase in the levels of pepsin, Thio barbituric acid reactive substance (TBARS). Lipid hydroperoxides and decrease in the levels of enzymatic and non enzymatic antioxidants. Treatment with the plant extract brought back the altered parameters to...
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