helenium radiatum/reductase

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Antitumor agents LXIII: the effects of microlenin on nucleic acid and protein syntheses of Ehrlich ascites cells.

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Prijava / prijava

Microlenin, a novel dimeric sesquiterpene lactone isolated from Texas Helenium microcephalum, was shown to inhibit Ehrlich ascites carcinoma growth. Metabolic studies demonstrated that DNA synthesis and protein synthesis were significantly inhibited by two doses of microlenin at 5 mg/kg/day. DNA

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

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Prijava / prijava

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

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

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Prijava / prijava

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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Prijava / prijava

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

Induction of detoxifying enzyme by sesquiterpenes present in Inula helenium.

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Prijava / prijava

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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Prijava / prijava

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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