helenium tenuifolium/glutathione

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Effect of several sesquiterpene lactones on lipid peroxidation and glutathione level.

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Seven sesquiterpene lactones isolated from Helenium aromaticum: helenalin, mexicanin I, linifolin A, geigerinin, and from Telekia speciosa: 6 alpha-hydroxy-2,3-dihydroaromaticin, asperilin, telekin have been tested for their hydroxyl radical scavenging activity and effect on lipid peroxidation. All

Role of glutathione in the toxicity of the sesquiterpene lactones hymenoxon and helenalin.

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Hymenoxon and helenalin are toxic sesquiterpene lactones present in the toxic range plants Hymenoxys odorata and Helenium microcephalum. Helenalin (25 mg/kg) or hymenoxon (30 mg/kg) administered to immature male ICR mice caused a rapid decrease in hepatic glutathione levels and were lethally toxic

Acute toxicity of helenalin in BDF1 mice.

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The acute toxicity of helenalin, a sesquiterpene lactone isolated from Helenium microcephalum, was examined in male BDF1 mice. The 14-day LD50 for a single ip dose of helenalin in male mice was 43 mg/kg. A single ip injection of 25 mg helenalin/kg increased serum alanine aminotransferase (ALT),

Effect of sesquiterpene lactones on antioxidant enzymes and some drug-metabolizing enzymes in rat liver and kidney.

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Previously we have reported that several sesquiterpene lactones isolated from Helenium aromaticum and Telekia speciosa showed pro-oxidative properties and caused glutathione level depletion in rat liver in vivo. In the present study we examined the in vivo effect of these lactones on antioxidant

Nrf2-mediated induction of detoxifying enzymes by alantolactone present in Inula helenium.

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Our previous study showed that a methanol extract of Inula helenium had the potential to induce detoxifying enzymes such as quinone reductase (QR) and glutathione S-transferase (GST) activity. In this study the methanol extract was further fractionated using silica gel chromatography and vacuum

Comparative effects of n-hexane and methanol extracts of elecampane (Inula helenium L.) rhizome on growth performance, carcass traits, feed digestibility, intestinal antioxidant status and ileal microbiota in broiler chickens.

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In this study, the effects of dietary methanol and n-hexane extracts of elecampane rhizome (MEER and HEER, respectively) on growth performance, apparent ileal nutrient digestibility (AID), ileal microbiota, intestinal morphology and antioxidant status of the intestinal mucosa were compared in

Induction of detoxifying enzyme by sesquiterpenes present in Inula helenium.

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Our previous study showed that the methanolic extract of Inula helenium (elecampane) had the potential to induce detoxifying enzymes such as quinine reductase (QR) and glutathione S-transferase. In this study we further fractionated the methanolic extract into hexane-, dichloromethane-, butanol-,

Isoalantolactone from Inula helenium caused Nrf2-mediated induction of detoxifying enzymes.

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Our previous study demonstrated that methanolic extract of Inula helenium (Elecampane) has the potential to induce detoxifying enzymes such as NAD(P)H:(quinone acceptor) oxidoreductase 1 (EC 1.6.99.2) (NQO1, QR) activity and glutathione S-transferase (GST) and found isoalantolactone and

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