Posted by admin on Jul 26, 2014 in |
Glutathione S-transferases are phase-II enzymes associated with detoxification and resistance to drugs and xenobiotics. The majority of human tumors and human tumor cell lines express significant amounts of alpha class Glutathione S-Transferase A1-1. Present study aimed to examine hGSTA1-1 interaction with some naturally occurring ligands using docking simulations. Docking simulation using Glutathione S-transferases A1-1 monomer without Glutathione conjugate was receptor against Glutathione, Ellagic acid, Lycopene, α-Tocopherol acetate, Quercetin, Ethacrynic acid, Caffeic acid, Porphyrin, Ferulic acid, Curcumin, Dithiothreitol, Cinnamic acid, Iodoacetamide, α-Tocopherol, Beta-mercaptoethanol showed that the majority ligands tested bound at sites bordering the enzyme subunit-subunit interface. Docking results showed that all the selected ligands docked satisfactorily to the hGSTA1-1 enzyme. Lycopene has a strong binding affinity (Binding energy:-10.68 kcal/mol; docking energy: -15.96 kcal/mol) with hGSTA1-1 amongst selected ligands and predicted as a strong inhibitor against hGSTA1-1. In contrast, investigations using hGSTA1-1 monomer revealed there are additional sites for Ethacrynic acid, Betamercaptoethanol and Glutathione binding rather than H-site as expected from X-ray crystallographic data. In conclusion, the docking simulations suggest...
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Posted by admin on Jul 26, 2014 in |
The effect of starvation on the digestive enzymes of female Holotrichia serrata (Fab) shows that there are considerable general reductions in enzymatic activities except in a lipase in both gut sections; however there are considerable increases of soluble proteins, both the gut section homogenates of the starved female. The maximum reduction of protease is 83% in a hindgut and 86% in the midgut followed by invertase which is 59% in a midgut and 50% in the hindgut and trehalose 62% hindgut and 51% in the midgut. The lipase is 80% reduction in a hindgut and 41% in the midgut in a starved female. In the starved female, Lipase showing the significant decrease in activity of 11% in a hindgut and 5% increase in the...
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Posted by admin on Jul 26, 2014 in |
The present study was aimed to investigate the possible antidiarrheal, antidiabetic, antioxidant and antimicrobial activity of methanolic extracts of leaves of Clerodendrum viscosum (Vent.) Different screening models are employed for an investigation like Castor oil induced diarrheal model for antidiarrheal activity screening, alloxan-induced diabetic model for antidiabetic activity screening, antioxidant activity by DPPH scavenging method and disc diffusion method for the antimicrobial activity screening. Clerodendrum viscosum (Vent.) shows good anti-diabetic, antidiarrheal and antioxidant activity but having no antimicrobial activity in relationship with the standard drug. Clerodendrum viscosum (Vent.) methanolic extract dose of 500mg/kg significantly reduces the blood glucose level at a 1st hour to 3rd hour 130 to 36 mg/dL in in–vivo mice model. During antidiarrheal screening, Clerodendrum viscosum (Vent.) extract dose reduces the number of stool from 3 to 1in 1st hour to 3rd of treatment. DPPH scavenging activity on Clerodendrum viscosum (Vent.) was significant with the standard. IC50% 8.93 µg/mL and 7.8 µg/mL for sample Clerodendrum viscosum (Vent.) and standard ascorbic acid...
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Posted by admin on Jul 26, 2014 in |
Antiseptics and Disinfectants are extensively used in the health care industry and also equally in personal hygiene. Among the chemicals, silver has long been known to have antimicrobial activity. Development of new, effective and low-cost antimicrobial textiles has been an objective of this research work due to increasing resistance of microbial pathogens to traditional chemicals. The potential effectiveness of silver socks (SS) fabric as an antimicrobial agent was evaluated in this study. Silver nitrate (10-3M) coated cotton socks significantly reduced the bacterial load of the socks flora among the medical students. The bacterial load is directly proportional to many days and inversely proportional to the concentration of silver nitrate. Pseudomonas species was isolated from four samples in day 3. This study reported that 10-3M silver nitrate solution coated cotton socks were very effective and having bacterial isolates...
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Posted by admin on Jul 26, 2014 in |
Purpose: Dichlorvos (DDVP) causes toxicity in animals including humans. Alstonia boonei stem bark is widely used as a culinary medicine in the Ayurvedic system of medicine, possessing a number of pharmacological properties. This study was designed to evaluate the effect of Alstonia boonei (AB) against dichlorvos induced nephrotoxicity in Wistar rats. Methods: Dichlorvos (50 mg/kg body weight) was orally administered in Wistar rats for 14 days followed by the treatment of Alstonia boonei (200 and 400 mg/kg body weight) for 14 days. Changes in the kidney biochemical marker namely, glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), aminotransferase (ALT), aspartate aminotransferase (AST) activities and levels of malondialdehyde (MDA), urea, and creatinine in the serum were estimated. Histological examinations of the kidney were monitored. Results: Exposure to dichlorvos lowered activities of kidney antioxidants, while it increased LPO levels. Levels of all disrupted parameters were alleviated by co-administration of AB extract. The malondialdehyde concentration of the rats treated with 200 and 400 mg/kg body weights of the extract significantly decreased (p<0.05) when...
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