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Cytotoxic and genotoxic activity of some Helleborus species.

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Despite their known toxic properties, various Helleborus species are used as medicaments in folk medicine to treat some diseases and health conditions. As the main mechanism of many cytostatic drugs is based on their cytotoxic activity, there is potential for the toxicity of hellebore to be used in

Differential cytotoxic properties of Helleborus niger L. on tumour and immunocompetent cells.

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BACKGROUND In Romanian folk medicine, Helleborus niger L. is used for the treatment of rheumatoid arthritis or viral infections and in complementary therapy, especially in anthroposophic medicine (AM), where the plant is administered as an adjuvant to treat malignant diseases. In the present study,

Steroids from Helleborus caucasicus reduce cancer cell viability inducing apoptosis and GRP78 down-regulation.

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Helleborus caucasicus (Ranunculaceae) is an endemic plant of the Caucasian flora, widely distributed in West Georgia. Biological activities for the extracts of some Helleborus species including H. caucasicus have been reported. In this work we found that butanolic extract of the underground parts of

Helleborus purpurascens-Amino Acid and Peptide Analysis Linked to the Chemical and Antiproliferative Properties of the Extracted Compounds.

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There is a strong drive worldwide to discover and exploit the therapeutic potential of a large variety of plants. In this work, an alcoholic extract of Helleborus purpurascens (family Ranunculaceae) was investigated for the identification of amino acids and peptides with putative antiproliferative

Cardiac Glycoside Compound Isolated from Helleborus thibetanus Franch Displays Potent Toxicity against HeLa Cervical Carcinoma Cells through ROS-Independent Autophagy.

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The current study aimed to examine the anticancer activity of HTF-1, a cardiac glycoside (CG) isolated from Helleborus thibetanus Franch, using a cell-based model and to discover the underlying mechanisms with specific focus on autophagy. We found that HTF-1 was able to potently decrease the

A cardiac glycoside HTF-1 isolated from Helleborus thibetanus Franch displays potent in vitro anti-cancer activity via caspase-9, MAPK and PI3K-Akt-mTOR pathways.

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Experiments have been undertaken and for the first time, we have identified that a new cardiac glycoside (CG) isolated from Helleborus thibetanus Franch. a plant endemic to China, bears potent anti-cancer activity. We have named it as HTF-1. By using in vitro cell models, we have found that HTF-1

Minor regression and long-time survival (56 months) in a patient with malignant pleural mesothelioma under Viscum album and Helleborus niger extracts-a case report.

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Malignant pleural mesothelioma (MPM) is a rare cancer with a dismal prognosis. Viscum album extracts (VAE) have strong immune stimulatory properties, cytotoxic effects, can downregulate cancer genes and inhibit angiogenesis. VAE are often used as an adjunct treatment in cancer patients but have

Preclinical evaluation of safety and potential of black hellebore extracts for cancer treatment.

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The therapeutic use of Helleborus niger L. is manifold due to its specific phytochemical composition. Two compound groups, the ranunculin derivates including protoanemonin and the steroidal saponins, are also associated with toxicity (genotoxicity, disintegration of membrane

Selective cytotoxicity evaluation in anticancer drug screening of fractionated plant extracts.

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Chosen to reflect biodiversity in a phylogenetic sense, 100 fractionated plant extracts were screened in vitro for cytotoxicity following extraction and fractionation (polypeptide isolation). Of these 100 extracts, 30 were selected and then characterized preliminarily for antitumor potency and mode

Deglucohellebrin. A Potent Agent for Glioblastoma Treatment.

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Glioblastoma is the most common primary brain tumor in adults with dismal prognosis. To date several anticancer agents have been isolated from plants. Helleborus odorus subsp. Cyclophyllus is an endemic plant of the Balcan flora. Herewith, we investigated for the first time the

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