1.Lead finding from Phyllanthus debelis with hepatoprotective potentials
Asian Pacific Journal of Tropical Biomedicine 2012;(z3):1735-1737
Objective: Present communication deals with the study of antihepatotoxic activity and molecular prediction of compounds isolated from Phyllanthus debelis in order to search lead compound. Methods: Five compounds from the whole plant of P. debelis were subjected to molecular properties prediction and drug-likeness by Lipinski rule of five & Molinspiration software. Results: All the compounds were found in compliance with Lipinski ‘Rule of Five’ except the Milog P valve of compound No. I-IV were found above five means these compounds have less permeability across the cell membrane. The Milog P valve of Compound No V & standard compound silibinin VI were found below five, suggest that the molecules have good permeability across the cell membrane. In respect of TPSA, all the compounds were within the limit i.e. 160 ?. The bioactivity score was also calculated for GPCR ligand, ion channel modulator, kinase inhibitor, nuclear receptor ligand. All the compound showed activity through enzyme inhibition.Conclusions:Our study shows that compound V debelolactone has good drug likeness score with no violations & good bioactivity score as compared to silibinin which is potent hepatoprotective drug. So compound V debelolactone can be a lead compound with hepatoprotective activity from Phyllanthus debelis.
2.Lead finding from whole plant of Marrubium vulgare L. with Hepatoprotective Potentials through in silico methods
Amita VERMA ; Mubashir MASOODI ; Bahar AHMED
Asian Pacific Journal of Tropical Biomedicine 2012;(z3):1308-1311
Objective: In the present study an attempt has been made to study the antihepatotoxic activity of active compounds in this plant through in silico methods. Methods: We have taken 12 compounds form this plant. All the compounds were further subjected to molecular propertied prediction and drug likeness by Molinspiration and found in compliance with Lipinski’s rule of five. Biochemical parameters like SGOT and SGPT were determined by Reitman and Frankel, ALP by Kind and King, TP by reported methods of Wooton. Results: All the compounds were showed expected similar bioactivity especially in case of enzyme inhibition. Compound Vulgarin showed no violation with good drug likeness score and biological activity as compare to standard drug Silibinin. Vulgarin exhibited a significant antihepatotoxic activity by reducing the elevated levels of serum enzymes such as serum glutamate oxaloacetate transaminase (SGOT) serum glutamate pyruvate oxaloacetate transaminase (SGPT) and alkaline phosphatase (ALP) while the total protein (TP) levels were increased when compared with standard drug silymarin against CCl4-induced toxicity in Wistar rats. These biochemical observations were also supplemented by histopathological examinations of the liver sections. Conclusions: We found that Vulgarin one of the twelve compounds is showed better drug likeness and biological activity against Silibinin. So this particular compound can be taken as lead compound for further drug discovery for hepatotoxic activity.
3.Amaranthus spinosus L. (Amaranthaceae) leaf extract attenuates streptozotocin-nicotinamide induced diabetes and oxidative stress in albino rats:A histopathological analysis
Mishra Bhushan Shanti ; Verma Amita ; Mukerjee Alok ; Vijayakumar Madhavan
Asian Pacific Journal of Tropical Biomedicine 2012;(z3):1647-1652
Objective: The aim of the present study was to evaluate the possible antidiabetic effects of Amaranthus spinosus leaf extract (ASEt) against streptozotocin-nicotinamide induced diabetes &oxidative stress in albino rats.Methods: Experimental diabetes was induced by a single dose of STZ (60 mg/kg) administered by intraperitoneal way after the administration of nicotinamide (120mg/kg). The oxidative stress was measured by reduced glutathione (GSH) content and by enzymatic activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in liver and kidney. Biochemical observations were further substantiated with histological examination of pancreas, kidney and liver. Results: The increase in blood glucose with the decrease in GSH content and in enzymatic activities were the salient features observed in diabetic rats. Administration of ASEt (250 & 500 mg/kg bw/day, i.p) for 21 days caused a significant reduction in blood glucose in STZ-nicotinamide treated rats when compared with diabetic rats. Furthermore, diabetic rats treated with ASEt leaf extract showed a significant increase in the activities of both enzymatic and non-enzymatic antioxidants when compared to those of diabetic rats. Degenerative changes of pancreatic cells in STZ treated rats were minimized to near normal morphology by administration of ASEt leaf extract as evidenced by histopathological examination.Conclusion: Results clearly indicate that Amaranthusspinosus treatment attenuate hyperglycemia by decreasing oxidative stress and pancreatic cells damage which may be attributed to its antioxidative potential.
4.Herbal antioxidant in clinical practice: a review.
Shashi ALOK ; Sanjay Kumar JAIN ; Amita VERMA ; Mayank KUMAR ; Alok MAHOR ; Monika SABHARWAL
Asian Pacific Journal of Tropical Biomedicine 2014;4(1):78-84
Antioxidant-the word itself is magic. Using the antioxidant concept as a spearhead in proposed mechanisms for staving off so-called "free-radical" reactions, the rush is on to mine claims for the latest and most effective combination of free-radical scavenging compounds. We must acknowledge that such "radicals" have definitively been shown to damage all biochemical components such as DNA/RNA, carbohydrates, unsaturated lipids, proteins, and micronutrients such as carotenoids (alpha and beta carotene, lycopene), vitamins A, B6, B12, and folate. Defense strategies against such aggressive radical species include enzymes, antioxidants that occur naturally in the body (glutathione, uric acid, ubiquinol-10, and others) and radical scavenging nutrients, such as vitamins A, C, and E, and carotenoids. This paper will present a brief discussion of some well- and little-known herbs that may add to the optimization of antioxidant status and therefore offer added preventive values for overall health. It is important to state at the outset that antioxidants vary widely in their free-radical quenching effects and each may be individually attracted to specific cell sites. Further evidence of the specialized nature of the carotenoids is demonstrated by the appearance of two carotenoids in the macula region of the retina where beta-carotene is totally absent.
Antioxidants
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Plant Preparations
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Plants, Medicinal