viscum angulatum/tyrosine

Biosignalling via lectins may involve modulation of protein kinase activities. This aspect of the biological action of mammalian and plant lectins has been investigated for their effect on the activity of the isolated epidermal growth factor receptor (EGFR). The constitutive tyrosine kinase activity

The role of amino, sulfhydryl, disulfide, carboxyl, phenolic, imidazole and indole groups on the agglutination of human erythrocytes by the lectin from Viscum album has been determined using specific chemical modification techniques. The results indicate that tyrosine residues participate in the

The plant lectin Viscum album agglutinin-I (VAA-I) was recently found to modulate protein synthesis and to induce apoptosis in various cells of immune origin. We found that VAA-I induces de novo protein synthesis of metabolically 35S-labeled human neutrophils when used at low concentrations (< 100

The effect of a lyophilized mistletoe infusion (LMI) was studied on isolated guinea-pig vas deferens. LMI caused a contraction which was partially blocked by phentolamine but not by atropine. LMI caused a shift to the left of the norepinephrine concentration-effect curve (CEC), an effect which

Bivalent lectins as bridging molecules between cells or cell surface lectins as docking points are involved in mediation of cell adhesion by specific recognition of suitable glycoconjugates on an opposing surface. The initial contact formation by a lectin can lead to intracellular post-binding

Background: Imatinib mesylate, a tyrosine kinase inhibitor specifically targeting the BCR/ABL fusion protein, induces hematological remission in patients with chronic myeloid leukemia (CML). However, the majority of CML patients treated with imatinib develop resistance with prolonged therapy.

BACKGROUND Stage IV non-small cell lung cancer (NSCLC) is associated with a five-year survival rate of around 1%. Treatment with Viscum album L. (VA) extracts has been shown to reduce chemotherapy (CTx)-related adverse events, decrease CTx dose reductions and improve quality of life in a number of