viscotoxin/kanser

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Induction of antibodies to viscotoxins A1, A2, A3, and B in tumour patients during therapy with an aqueous mistletoe extract.

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Mistletoe extracts exert immunomodulatory properties on immunocompetent cells of the innate as well as the specific immune system. These effects have been mainly ascribed to mistletoe lectin 1 (ML-1) present in most of the extracts. However, it became evident that also other components of these

Anaphylaxis to viscotoxins of mistletoe (Viscum album) extracts.

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BACKGROUND Extracts of mistletoe (Viscum album) are used in many countries for adjuvant cancer therapy. These extracts contain mistletoe lectins and viscotoxins that are supposed to have immunostimulating and cytotoxic effects, respectively. The treatment is usually well tolerated. OBJECTIVE To

Isolation of viscotoxins. Cytotoxic basic polypeptides from Viscum album L.

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In the course of cytotoxicity-directed fractionation of extracts from Viscum album L., it appeared that crude viscotoxin, a basic polypeptide fraction, is responsible for cytotoxic properties of the plant examined. Separation of this fraction by ion exchange chromatography on carboxymethylcellulose

Antiproliferative potential from aqueous Viscum album L. preparations and their main constituents in comparison with ricin and purothionin on human cancer cells.

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Mistletoe has been used since ancient times in Europe mostly for medicinal purposes. Since 1917, mistletoe preparations have been applied in cancer therapy and today are the most frequently used complementary medicine in tumor treatment. The main cytotoxic constituents of Viscum album

Mistletoe viscotoxins increase natural killer cell-mediated cytotoxicity.

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Mistletoe extracts have immunomodulatory activity. We show that nontoxic concentrations of Viscum album extracts increase natural killer (NK) cell-mediated killing of tumor cells but spare nontarget cells from NK lysis. The compounds responsible for this bioactivity were isolated from mistletoe and

Human cancer cells exhibit in vitro individual receptiveness towards different mistletoe extracts.

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In vitro cytotoxic effects of three aqueous mistletoe extracts on cell physiology against different human tumor cell lines and primary cancer cells were investigated in order to compare the receptiveness of different cancer cells against different mistletoe products. Therefore cell proliferation

In vitro immunoreactivity towards lectin-rich or viscotoxin-rich mistletoe (Viscum album L.) extracts Iscador applied to healthy individuals.

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The aim of the study was to investigate how exposure to mistletoe extracts in vivo may influence cellular immune reactions by peripheral blood mononuclear cells (PBMC). 47 healthy individuals were exposed for twelve weeks either to Iscador Quercus special (IQ; rich in mistletoe lectin [ML]) (n =

Effects of a lectin- and a viscotoxin-rich mistletoe preparation on clinical and hematologic parameters: a placebo-controlled evaluation in healthy subjects.

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OBJECTIVE Mistletoe preparations, which are widely used among patients with cancer in Germany, have immunomodulating properties in vitro and in vivo. The aim of this evaluation was to determine and compare the effects of a lectin-rich (Iscador Qu [IQ] special, Weleda Company, Schwäbisch, Gmünd,

In vivo-induction of antibodies to mistletoe lectin-1 and viscotoxin by exposure to aqueous mistletoe extracts: a randomised double-blinded placebo controlled phase I study in healthy individuals.

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BACKGROUND Several studies have been performed in tumour patients to analyse the immunological response to mistletoe extracts. Considering the fact that these extracts are given subcutaneously in most instances, the kind of application resembles a typical immunization schedule. We therefore wanted

Viscotoxin-free aqueous extracts from European mistletoe (Viscum album L.) stimulate activity of human granulocytes.

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BACKGROUND Extracts from European mistletoe (Viscum album L., VAL) are used for complementary cancer treatment. Viscotoxins (VT) and whole plant extracts with high amounts of the VT have been shown to stimulate functional activity of granulocytes. METHODS We stimulated neutrophils from healthy

Thionins from Viscum album L: influence of the viscotoxins on the activation of granulocytes.

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BACKGROUND Extracts from European mistletoe (Viscum album L.) are applied in adjuvant cancer treatment, and some components, especially the mistletoe lectins (ML) have been immunologically characterised, but not the thionins, termed viscotoxins (VT). METHODS The influence of the VT on human

[Helixor--mistletoe preparation for cancer therapy. Documentation No. 19].

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Helixor is an aqueous cold extract from fresh mistletoe, obtained from fir, pine and apple trees. A number of components with different possible effects were isolated: lectins, viscotoxins, alkaloids, etc. "Oncological therapy" and "stimulation of the bone marrow" are given as the main fields of

Comparative membrane interaction study of viscotoxins A3, A2 and B from mistletoe (Viscum album) and connections with their structures.

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Viscotoxins A2 (VA2) and B (VB) are, together with viscotoxin A3 (VA3), among the most abundant viscotoxin isoforms that occur in mistletoe-derived medicines used in anti-cancer therapy. Although these isoforms have a high degree of amino-acid-sequence similarity, they are strikingly different from

Screening of fusion partners for high yield expression and purification of bioactive viscotoxins.

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Viscotoxins are small cationic proteins found in European mistletoe Viscum album. They are highly toxic towards phytopathogenic fungi and cancer cells. Heterologous expression of viscotoxins would broaden the spectrum of methods to be applied for better understanding of their structure and function

Comparative study concerning mistletoe viscotoxins antitumor activity.

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Viscum album L. (Santalaceae) (VA) - a parasitic plant that grows on various trees - has proved a significant anticancer effect in both experimental studies and clinical trials. The present study assesses the influence of oxidative stress in mistletoe induced cytotoxicity in tumor cells, in relation

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