Antioxidant, anti-inflammatory and anti-browning activities of hot water extracts of oriental herbal teas

Wu, Li-Chen; Jou, Amily Fang-Ju; Chen, Sihan; Tien, Chia-Ying; Cheng, Chih-Fu; Fan, Nien-Chu; Ho, Ja‐an Annie

doi:10.1039/c0fo00047g

Cited by 27 publications

(16 citation statements)

References 29 publications

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“…The quantification of individual catechins was determined by standard calibration curves calculated from those of authentic reference standards. The total flavonoid content was determined using a colorimetric method as described by Wu et al [11]. As shown in Table 1, EGCG, ECG, were identified as major polyphenol constituents of tea flower, while GCG and GA were present in smaller quantities.…”

Section: Methodsmentioning

confidence: 99%

Anti-Inflammatory Effects of a Polyphenols-Rich Extract from Tea (Camellia sinensis) Flowers in Acute and Chronic Mice Models

Chen

et al. 2012

Oxidative Medicine and Cellular Longevity

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While beneficial health properties of tea leaves have been extensively studied, less attention is paid to the flowers of tea. In this study, the anti-inflammatory effects of hot water extract of tea (Camellia sinensis) flowers were investigated. Pharmacological studies found that administration of tea flowers extract (TFE) could effectively inhibit croton oil-induced ear edema and carrageenin-induced paw edema. Furthermore, administration of TFE also protected against Propionibacterium acnes (P. ances) plus lipopolysaccharide-(LPS-) induced liver inflammation by reversing the histologic damage and plasma alanine aminotransferase (ALT) increase. Moreover, the levels of nitric oxide (NO), tumor necrosis factor-(TNF)-α and interleukin-(IL-) 1β mRNA in mouse liver were markedly suppressed after treatment with TFE in mice with immunological liver inflammation. These results indicated that tea flowers had potent anti-inflammatory effects on acute and immunological inflammation in vivo, and may be used as a functional natural food.

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Section: Methodsmentioning

confidence: 99%

Anti-Inflammatory Effects of a Polyphenols-Rich Extract from Tea (Camellia sinensis) Flowers in Acute and Chronic Mice Models

Chen

et al. 2012

Oxidative Medicine and Cellular Longevity

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“…Equisetum arvense , native to the Arctic and temperate regions of Europe, belongs to the Equisetopsida family, and it is commonly used as a herbal remedy. The phytotherapic properties are anti‐bacterial (Bessa Pereira et al., ; Milovanović, Radulović, Todorović, Stanković, & Stojanović, ), antioxidant (Cetojević‐Simin et al., ; Wu et al., ) and anti‐inflammatory (Gründemann et al., ).…”

Section: Introductionmentioning

confidence: 99%

Effects of a nutritional supplement in dogs affected by osteoarthritis

Musco

Vassalotti²,

Mastellone

et al. 2019

Veterinary Medicine & Sci

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Osteoarthritis is a form of chronic joint inflammation caused by the deterioration of the joint cartilage, accompanied by chronic pain, lameness and stiffness, particularly after prolonged activity. Alternative treatments of canine osteoarthritis would be desirable and, recently nutraceuticals, have been proposed for this purpose. Twenty cross breed adult dogs affected by osteoarthritis were enrolled and equally divided into two groups (control vs. experimental). The nutritional supplement (Dynamopet srl, Verone, Italy) was administered for 90 days to the dogs of the experimental group in order to evaluate its metabolic and locomotor effects. All the clinical signs (lameness, pain on manipulation and palpation, range of motion and joint swelling) significantly (p < 0.01) improved during the trial as regards the experimental group. This group showed a significantly lower joint score than the control group (mean value 7.40 vs. 3.80). With regard to haematology, the mean corpuscular volume resulted significantly (p < 0.01) higher in the experimental group, i.e. alkaline phosphatase, cholesterol and triglycerides values decreased and were significantly (p < 0.01) lower than the control one, thus suggesting an improvement in bone remodelling and lipid metabolism. A decrease in the reactive oxygen metabolites and an increase in the biological antioxidant potential demonstrated an improvement in oxidative stress during the trial in the experimental group compare to the control group. Interleukins 6 decreased in the experimental group, while interleukins 10 resulted in the opposite trend. Moreover, the administration of up to 3 months of the studied supplement was well tolerated in the dogs and caused no adverse effects.

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“…Among the species of this genus, only Equisetum arvense “Equiseti herba”) is listed in the German commission E Monograph (phytotherapy and herbal substances) of the German Federal Institute for Drugs and Medical Devices [5] as well as in the European Pharmacopoeia [6]. The putative medicinal properties are supported by a number of studies, which found (I) hepatoprotective [7], (II) diuretic [8], (III) anti-bacterial [9, 10] or (IV) antioxidant effects [11–14]. Furthermore, (V) anti-inflammatory properties for the treatment of wounds or inflammatory diseases such as arthritis have been described [15, 16].…”

Section: Introductionmentioning

confidence: 99%

Equisetum arvense (common horsetail) modulates the function of inflammatory immunocompetent cells

Gründemann

Lengen

Sauer

et al. 2014

BMC Complement Altern Med

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BackgroundIn Europe, extracts of Equisetum arvense (common horsetail) have a long tradition in the treatment of inflammatory disorders. To understand the molecular basis for its use, we investigated the immunomodulatory capacity of a standardized commercially available common horsetail extract on human primary lymphocyte function in vitro.MethodsThe standardized extract of Equisetum arvense was phytochemically characterized. Effects on proliferation, viability and activity of mitogen-activated human lymphocytes were assessed in comparison to cyclosporine A using annexin V/propidium iodide staining assays and flow cytometry-based surface receptor characterization, respectively. Intracellular levels of effector molecules (IL-2, IFN-γ and TNF-α) were analyzed with cytokine assays.ResultsT cell proliferation was inhibited dose dependently by the Equisetum extract without induction of apoptosis or necrosis. This effect was mediated through inhibition of lymphocyte activation, specifically by diminishing CD69 and IL-2 surface receptor expression and intracellular IL-2 production. Furthermore, treatment with Equisetum arvense inhibited effector functions, as indicated by reduced production of IFN-γ and TNF-α.ConclusionsThe data indicate that the used extract of Equisetum arvense interferes with the polyfunctionality of immunocompetent cells thereby providing an anti-inflammatory mode-of-action.Electronic supplementary materialThe online version of this article (doi:10.1186/1472-6882-14-283) contains supplementary material, which is available to authorized users.

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Antioxidant, anti-inflammatory and anti-browning activities of hot water extracts of oriental herbal teas

Cited by 27 publications

References 29 publications

Anti-Inflammatory Effects of a Polyphenols-Rich Extract from Tea (Camellia sinensis) Flowers in Acute and Chronic Mice Models

Anti-Inflammatory Effects of a Polyphenols-Rich Extract from Tea (Camellia sinensis) Flowers in Acute and Chronic Mice Models

Effects of a nutritional supplement in dogs affected by osteoarthritis

Equisetum arvense (common horsetail) modulates the function of inflammatory immunocompetent cells

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