Effects of Malaysian Tualang honey supplementation on glycemia, free radical scavenging enzymes and markers of oxidative stress in kidneys of normal and streptozotocin-induced diabetic rats

Objective: Hemidesmus indicus R. Br. (HI) (Indian sarsaparilla) is traditionally used in Indian medicine for human therapy. The present study was aimed to evaluate the antioxidant activity of HI root extracts, and its effects on delaying (or) management of cataract progression in streptozoticin (STZ) induced diabetic rats.Methods: The plant roots were extracted in different solvents, estimated total phenolic content, total flavonoid content and conducted free radical scavenging potential through 1,1-Diphenyl-2-picrylhydrazyl (DPPH), 2,2 azinobis (3-ethyl benzothiazoline-6-sulphonic acid diammonium salt (ABTS) NO, OH and reducing power assays. Further, the protective effect was evaluated in STZ induced diabetic rats through administered of ethyl acetate extract of HI (200 and 400 mg/kg body weight) orally for 8 weeks to study its effect on oxidative stress and diabetic cataract progression.Results: In primary results demonstrated that the ethyl acetate extract has been showed considerable free radical scavenging activity and significantly gain body weight, gradual decreasing blood glucose levels and delay cataract progression has been observed in HI treated rats. Furthermore, we observed significantly decreased oxidative stress markers, and restoration of the antioxidant system in HI treated rats. Lens sections from experimental animal again evidenced to conform the ameliorative effect of HI on diabetic cataract.Conclusion: This obtained result’s confirmed that the protective effect of HI is attributed to the antioxidant activities of plant roots and its active principles.

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Free radical scavenging enzymes in fetal dysmorphogenesis among offspring of diabetic rats

Teratology ◽

10.1002/(sici)1096-9926(199712)56:6<343::aid-tera1>3.0.co;2-x ◽

1997 ◽

Vol 56 (6) ◽

pp. 343-349 ◽

Cited By ~ 74

Author(s):

Eyal Sivan ◽

Yi-Chun Lee ◽

Ying-King Wu ◽

E. Albert Reece

Keyword(s):

Free Radical ◽

Radical Scavenging ◽

Diabetic Rats ◽

Free Radical Scavenging ◽

Scavenging Enzymes

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Development of a free radical scavenging bacterial consortium to mitigate oxidative stress in cnidarians

Microbial Biotechnology ◽

10.1111/1751-7915.13877 ◽

2021 ◽

Author(s):

Ashley M. Dungan ◽

Dieter Bulach ◽

Heyu Lin ◽

Madeleine J. H. van Oppen ◽

Linda L. Blackall

Keyword(s):

Oxidative Stress ◽

Free Radical ◽

Radical Scavenging ◽

Bacterial Consortium ◽

Free Radical Scavenging

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In Vitro and In Vivo Antioxidant Properties of Taraxacum officinale in Nω-Nitro-l-Arginine Methyl Ester (L-NAME)-Induced Hypertensive Rats

Antioxidants ◽

10.3390/antiox8080309 ◽

2019 ◽

Vol 8 (8) ◽

pp. 309

Author(s):

Olukayode O. Aremu ◽

Adebola O. Oyedeji ◽

Opeoluwa O. Oyedeji ◽

Benedicta N. Nkeh-Chungag ◽

Constance R. Sewani Rusike

Keyword(s):

Oxidative Stress ◽

Free Radical ◽

Methyl Ester ◽

Leaf Extract ◽

Radical Scavenging ◽

Free Radical Scavenging ◽

Hypertensive Rats ◽

Total Antioxidant

Oxidative stress has gained attention as one of the fundamental mechanisms responsible for the development of hypertension. The present study investigated in vitro and in vivo antioxidant effects of 70% ethanol-water (v/v) leaf and root extracts of T. officinale (TOL and TOR, respectively). Total phenolic and flavonoid content of plant extracts were assessed using Folin Ciocalteau and aluminium chloride colorimetric methods; while, 2,2-diphenyl-1-picrlhydrazyl (DPPH), 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid (ABTS) and ferric reducing antioxidant power (FRAP) protocols were used to determine the free radical scavenging and total antioxidant capacities (TAC), respectively. The in vivo total antioxidant capacity and malondialdehyde acid (MDA) levels for lipid peroxidation tests were performed on organ homogenate samples from Nω-nitro-L-arginine methyl ester (L-NAME)-induced hypertensive rats treated with leaf extract, TOL (500 mg/kg/day) and TOR (500 mg/kg/day) for 21 days. Results showed that compared to TOR, TOL possessed significantly higher (p < 0.01) polyphenol (4.35 ± 0.15 compared to 1.14 ± 0.01) and flavonoid (23.17 ± 0.14 compared to 3 ± 0.05) content; free radical scavenging activity (EC50 0.37 compared to 1.34 mg/mL) and total antioxidant capacities (82.56% compared to 61.54% ABTS, and 156 ± 5.28 compared to 40 ± 0.31 FRAP) and both extracts showed no toxicity (LD50 > 5000 mg/kg). TOL and TOR significantly (p < 0.01) elevated TAC and reduced MDA levels in targets organs. In conclusion, T. officinale leaf extract possesses significant anti-oxidant effects which conferred significant in vivo antioxidant protection against free radical-mediated oxidative stress in L-NAME-induced hypertensive rats.

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