Green Tea Extract Decreases Oxidative Stress and Improves Insulin Sensitivity in an Animal Model of Insulin Resistance, the Fructose-Fed Rat

Hininger‐Favier, Isabelle; Benaraba, Rachida; Coves, Sara; Anderson, Richard A.; Roussel, Anne‐Marie

doi:10.1080/07315724.2009.10718097

Cited by 90 publications

(59 citation statements)

References 54 publications

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“…Insulin signaling is impaired under conditions of oxidative stress [28] and polyphenols have been shown to reverse oxidative stress-induced impairments in insulin signaling [29]. Thus our findings suggest that the effects of GSE on decreased plasma glucose are mediated through improved insulin economy, possibly through modulation of cellular redox status improving insulin signaling.…”

Section: Discussionmentioning

confidence: 61%

Effect of grape seed extract on postprandial oxidative status and metabolic responses in men and women with the metabolic syndrome - randomized, cross-over, placebo-controlled study

Edirisinghe

Randolph

Cheema

et al. 2013

FFHD

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Objective: This investigation was undertaken to determine whether a grape seed extract (GSE) that is rich in mono-, oligo-and poly-meric polyphenols would modify postprandial oxidative stress and inflammation in individuals with the metabolic syndrome (MetS). Background:MetS is known to be associated with impaired glucose tolerance and poor glycemic control. Consumption of a meal high in readily available carbohydrates and fat causes postprandial increases in glycemia and lipidemia and markers of oxidative stress, inflammation and insulin resistance.

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Section: Discussionmentioning

confidence: 61%

Effect of grape seed extract on postprandial oxidative status and metabolic responses in men and women with the metabolic syndrome - randomized, cross-over, placebo-controlled study

Edirisinghe

Randolph

Cheema

et al. 2013

FFHD

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“…Green tea is well known for those individuals that have increased oxidative stress and decreased insulin sensitivity, such as those with the type II diabetes or metabolic syndrome [17]. The opposite association among various serum markers and consumption of green tea indicates that green tea may perform protectively against disorders of the liver and cardiovascular disease and exert protective effects against oxidative stress and cancer [18].…”

Section: Discussionmentioning

confidence: 99%

Ten different brewing methods of green tea: comparative antioxidant study

2016

J App Biol Biotech

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In this study, three brands of green tea collected from different markets of Rawalpindi, Pakistan were screened to identify best brewing method for green tea preparation and characterize their antioxidant potential. Brand A, brand B and non-branded green tea were examined for antioxidant potential by DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical scavenging assay and reducing power method. Samples were prepared by ten different recipes used in different cultures. Distilled water and ethanol were used as solvent. Three brewing methods with highest, lowest and moderate antioxidant activities were identified and analyzed for phytochemical constituents such as phenolic compounds, flavonoids, tannins, saponins, proteins, alkaloids and steroids. Cold cocktail showed highest antioxidant activity (85.9%), soft infusion showed moderate (70.6%) while hard infusion indicated lowest antioxidant potential (59.9%)amongst all the green tea brands tested. Phenolic compounds, tannins and proteins were found in all tea types with varying strength due to different brewing method. Alkaloids were not present in any type of green tea while steroids were found in brand A and B.

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“…Administration of polyphenols to diabetic animals resulted in a lower level of markers of oxidative stress as judged by lower levels of products of lipid peroxidation in pancreatic homogenates (Coskun et al 2005), kidneys (Lee, Wang, et al 2009) and blood plasma (Ciocoiu et al 2009;Hininger-Favier et al 2009) of STZ-rats. This may be a result of direct antioxidant activity of polyphenols, as well as a result of their ability to upregulate expression of antioxidant-defense enzymes: glutathione peroxidase (GSHPx) superoxide dismutase and catalase activities (Ciocoiu et al 2009;Lee, Wang, et al 2009;Dixit and Kar 2010).…”

Section: Wwwintechopencommentioning

confidence: 99%

Mitochondria and Antioxidants: The Active Players in Islet Oxidative Stress

Votyakova¹,

Bottino²,

Trucco³

2012

Chemical Biology

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Green Tea Extract Decreases Oxidative Stress and Improves Insulin Sensitivity in an Animal Model of Insulin Resistance, the Fructose-Fed Rat

Abstract: These data suggest that green tea may be beneficial for people with decreased insulin sensitivity and increased oxidative stress, such as those with the metabolic syndrome or type 2 diabetes.

Cited by 90 publications

References 54 publications

Effect of grape seed extract on postprandial oxidative status and metabolic responses in men and women with the metabolic syndrome - randomized, cross-over, placebo-controlled study

Effect of grape seed extract on postprandial oxidative status and metabolic responses in men and women with the metabolic syndrome - randomized, cross-over, placebo-controlled study

Ten different brewing methods of green tea: comparative antioxidant study

Mitochondria and Antioxidants: The Active Players in Islet Oxidative Stress

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