scholarly journals Ex VivoAntioxidant Activity of Selected Medicinal Plants against Fenton Reaction-Mediated Oxidation of Biological Lipid Substrates

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Namratha Pai Kotebagilu ◽  
Vanitha Reddy Palvai ◽  
Asna Urooj
Keyword(s):  
Antioxidant Activity ◽  
Medicinal Plants ◽  
Fenton Reaction ◽  
Methanol Extract ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Andrographis Paniculata ◽  
Antioxidant Potential ◽  
Low Density ◽  
Mediated Oxidation

Free radical-mediated oxidation is often linked to various degenerative diseases. Biological substrates with lipids as major components are susceptible to oxygen-derived lipid peroxidation due to their composition. Lipid peroxide products act as biomarkers in evaluating the antioxidant potential of various plants and functional foods. The study focused on evaluation of the antioxidant potential of two extracts (methanol and 80% methanol) of four medicinal plants,Andrographis paniculata,Costus speciosus, Canthium parviflorum, andAbrus precatorius, against Fenton reaction-mediated oxidation of three biological lipid substrates; cholesterol, low-density lipoprotein, and brain homogenate. The antioxidant activity of the extracts was measured by thiobarbituric acid reactive substances method. Also, the correlation between the polyphenol, flavonoid content, and the antioxidant activity in biological substrates was analyzed. Results indicated highest antioxidant potential by 80% methanol extract ofCanthium parviflorum(97.55%), methanol extract ofAndrographis paniculata(72.15%), and methanol extract ofCanthium parviflorum(49.55%) in cholesterol, low-density lipoprotein, and brain, respectively. The polyphenol and flavonoid contents of methanol extract ofAndrographis paniculatain cholesterol (r=0.816) and low-density lipoprotein (r=0.948) andCostus speciosusin brain (r=0.977, polyphenols, andr=0.949, flavonoids) correlated well with the antioxidant activity. The findings prove the antioxidant potential of the selected medicinal plants against Fenton reaction in biological lipid substrates.

scholarly journals Evaluation of Antihyperlipidaemic and Antioxidant Activity of Astercantha longifolia (Linn.) Nees and Pergularia daemia (Forsskal) Chiov

2020 ◽  
pp. 134-138
Author(s):  
T. P. Kumari Pushpa Rani ◽  
A. Doss ◽  
S. P. Anand
Keyword(s):  
Antioxidant Activity ◽  
Biochemical Parameters ◽  
Methanol Extract ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Diabetic Control ◽  
Diabetic Rats ◽  
Lipoprotein Cholesterol ◽  
Low Density ◽  
Low Density Lipoprotein Cholesterol

Objective: To evaluate the antioxidant and antihyperlipidaemic effect of methanol extracts of Asteracantha longifolia and Pergularia daemia leaf in alloxan induced diabetic rats. Methods: Swiss albino rats were made diabetic by a single dose of alloxan monohydrate (150 mg/kg i.p.). Blood glucose levels and body weights of rats were measured using on weekly intervals i.e day 0,7,14 and 21 after daily administration of both extracts at dose 200 mg/kg bw. Other biochemical parameters such as serum cholesterol, triglycerides, low density lipoprotein-cholesterol, very low density lipoprotein-cholesterol, high density lipoprotein-cholesterol, phospholipids and serum protein, albumin, globulin levels were also measured at the end of study. The antioxidant enzymes (CAT, SOD & GSH) were also measured in the diabetic rats. Results: In the acute toxicity study, methanol extract of both plants were non-toxic at 2000 mg/kg in rats. The increased body weight, decreased blood glucose and other biochemical parameters level were observed in diabetic rats treated with methanol extracts of both plants compared to diabetic control rats. The antioxidant activity of both plant extracts were also exhibited significant activity. In diabetic rats, methanol extract of both plants administration, altered lipid profiles were reversed to near normal than diabetic control rats. Conclusions: Methanol extract of both plants (Asteracantha longifolia and Pergularia daemia) leaf possesses significant antioxidant and antihyperlipidaemic activity in diabetic rats.

scholarly journals Correlation between Chemical Composition ofCurcuma domesticaandCurcuma xanthorrhizaand Their Antioxidant Effect on Human Low-Density Lipoprotein Oxidation

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Ibrahim Jantan ◽  
Fadlina Chany Saputri ◽  
Muhammad Naeem Qaisar ◽  
Fhataheya Buang
Keyword(s):  
Antioxidant Activity ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Thiobarbituric Acid ◽  
Low Density ◽  
Thiobarbituric Acid Reactive Substances ◽  
Lipoprotein Oxidation ◽  
Strong Activity ◽  
Methanol Extracts ◽  
Mediated Oxidation

The antioxidant activity of the curcuminoids ofCurcuma domesticaL. andC. xanthorrhizaRoxb. and eight compounds which are prevalent constituents of their rhizome oils were investigated in an effort to correlate human low-density lipoprotein (LDL) antioxidant activity with the effect of the herbs and their components. The antioxidant activity was examined using thiobarbituric acid reactive substances (TBARSs) assay with human LDL as the oxidation substrate. The methanol extracts and rhizome oils ofC. xanthorrhizaandC. domesticashowed strong inhibitory activity on copper-mediated oxidation of LDL. Curcumin, demethoxycurcumin, and bisdemethoxycurcumin, isolated from the methanol extracts of both plants, exhibited stronger activity than probucol (IC50value 0.57 μmol/L) as reference, with IC50values ranging from 0.15 to 0.33 μmol/L. Xanthorrhizol, the most abundant component (31.9%) of the oil ofC. xanthorrhiza, showed relatively strong activity with an IC50value of 1.93 μmol/L. The major components ofC. domestica, ar-turmerone (45.8%) and zerumbone (3.5%), exhibited IC50values of 10.18 and 24.90 μmol/L, respectively. The high levels of curcuminoids in the methanol extracts and xanthorrhizol, ar-turmerone and zerumbone in the oils, and in combination with the minor components were responsible for the high LDL antioxidant activity of the herbs.

scholarly journals ANTIDYSLIPIDEMIA AND ANTIOXIDANT ACTIVITY OF ANDROGRAPHOLIDE COMPOUND FROM SAMBILOTO (ANDROGRAPHIS PANICULATA) HERB

2017 ◽  
Vol 9 (7) ◽  
pp. 59
Author(s):  
Ni Kadek Warditiani ◽  
Ni Made Pitri Susanti ◽  
Cokorda Istri Sri Arisanti ◽  
Ni Putu Rika Dharma Putri ◽  
I Made Agus Gelgel Wirasuta
Keyword(s):  
Antioxidant Activity ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Ethanolic Extract ◽  
Andrographis Paniculata ◽  
Ldl Oxidation ◽  
Low Density ◽  
Lipoprotein Level ◽  
Histopathology Result ◽  
Antidyslipidemic Activity

Objective: The aim of this study was to observe the antidyslipidemic and antioxidant activity of andrographolide (AND) compound from Sambiloto (Andrographis paniculata) herb. The antidyslipidemic activity could be described by lowering TC (total cholesterol), TG (triglyceride), and LDL (low-density lipoprotein) level in the blood and by increasing HDL (high-density lipoprotein) level in the blood. The antioxidant activity could be described by inhibiting the ox-LDL (oxidized low-density lipoprotein) formation.Methods: AND was separated from the sambiloto ethanolic extract. Atherosclerosis in rats was induced by rich fat food (5% yolk, 10% lard), 1% calcium and 20.000 IU vitamin D3 for 90 d. The rats were treated with AND compound on the 61st day for 30 d. On the 90th day, the blood of rats had been collected, and its blood vessel was also extracted. Antidyslipidemic activity was measured by estimating the level of TC, TG, LDL and HDL in the blood. Antioxidant activity was measured by calculating the ox-LDL concentration in blood and histopathology parameter.Results: 18 mg/kg BW AND could reduce the level TC, TG, and LDL in blood, and could increase HDL blood level significantly (p<0.05). This compound can also significantly inhibit LDL oxidation (p<0.05), and the histopathology result showed that this compound could protect the vessel from adhesive lipid plaques.Conclusion: AND compound from sambiloto herb showed the antidyslipidemic and antioxidant effect in atherogenic rats.

Oxidative modification of triacylglycerol-rich lipoproteins

2003 ◽  
Vol 31 (5) ◽  
pp. 1062-1065 ◽  
Author(s):  
I.S. Young ◽  
C. McFarlane ◽  
J. McEneny
Keyword(s):  
Particle Size ◽  
Fatty Acid Composition ◽  
Arterial Wall ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Oxidative Modification ◽  
Low Density ◽  
Lipoprotein Oxidation ◽  
Oxidative Reactions ◽  
Mediated Oxidation

Lipoprotein oxidation is thought to play a pivotal role in the evolution of atherosclerosis. Low-density lipoprotein (LDL) is the main source of oxidized lipid in the arterial wall. Oxidation of LDL alters its properties in a number of ways, making it more atherogenic, but oxidation of other lipoprotein classes may also be important. Common mechanisms are likely to contribute to the oxidation of all lipoprotein classes, with enzyme-mediated oxidation likely to be most important. Antioxidant content, fatty acid composition, particle size and the presence of seeding hydroperoxides also influence oxidative reactions. Larger triglyceride-rich lipoproteins are less likely to enter the arterial wall than LDL, but when oxidized will deliver a greater oxidant load to the arterial wall.

4.P.168 Low density lipoprotein-bound isoflavonoid genistein: Structure-antioxidant activity relationships

1997 ◽  
Vol 134 (1-2) ◽  
pp. 331
Author(s):  
Q.H. Meng ◽  
H. Adlercreutz ◽  
K. Wähälä ◽  
M.J. Tikkanen
Keyword(s):  
Antioxidant Activity ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Low Density
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