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From the aerial roots of the medicinal plant Geranium sanguineum L. a polyphenol-rich extract with strong anti-influenza activity has been isolated. To investigate its active fractions, the extract was partitioned by solvents with increasing polarity. The n-BuOH fraction contained the majority of
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A polyphenol extract obtained from the Bulgarian medicinal plant Geranium sanguineum L. (PC) inhibited influenza virus reproduction in vitro, in ovo and in vivo. The inhibitory activity of the plant preparation was proved to be selective and specific. Two variants of the virus A/chicken/Germany/34,
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Recent evidence shows that plant polyphenols exhibit antioxidant and radical scavenging properties. By three separate and complementary methods--DPPH assay, beta-carotene-linoleic acid assay and NBT-reduction assay it was established that a polyphenol-rich extract from the medicinal plant Geranium
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A polyphenol-rich extract from Geranium sanguineum L. (PC) protected biological membranes due to its antioxidant capacity. PC caused a dose-dependent decrease of the osmotic hemolysis of human erythrocytes and increased their resistance against the toxic effect of H(2)O(2); no effect on catalase
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A polyphenol-rich extract from the aerial roots of the medicinal plant Geranium sanguineum L. (PC) protected mice from mortality in the experimental influenza A/Aichi/2/68 (H3N2) virus infection. To provide evidence how a maximum therapeutic benefit can be derived of this preparation, it was
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A methanol extract (PC) has been obtained from the Bulgarian medicinal plant Geranium sanguineum L. The antiinfective activity of the plant preparation was studied. The extract inhibited the reproduction of a range of viruses (influenza, herpes simplex, vaccinia, HIV-I) in cell cultures. Its
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The combined protective effect of a polyphenol-rich extract, isolated from Geranium sanguineum L. (PC), and a novel naturally glycosylated Cu/Zn-containing superoxide dismutase, produced from the fungal strain Humicula lutea 103 (HL-SOD), in the experimental influenza A virus infection (EIVI) in
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Influenza infection was induced in white mice by intranasal inoculation of the virus A/Aichi/2/68 (H3N2). The lung protease and the protease-inhibitory activities were followed for 9 days after infection. The intranasal application of a polyphenol-rich extract (PC) isolated from Geranium sanguineum
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Influenza infection was induced in white ICR mice by intranasal (i.n.) inoculation of the virus A/Aichi/2/68 (H3N2). The number, migration and phagocyte indices of alveolar and peritoneal macrophages (pMØ) and of blood polymorphonuclear leukocytes (PMNs), as well as the inhibition of the PMN
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The herpes virus inhibitory effect of five extracts from the Bulgarian medicinal plant Geranium sanguineum L. (Geraniaceae) was investigated. The water extract (WE) from the aerial roots of the plant was the least toxic for cell cultures and inhibited significantly the replication of herpes simplex
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A combined antiviral effect of a polyphenol-rich extract of the medicinal plant Geranium sanguineum L. (PC) and a protease inhibitor, epsilon-aminocaproic acid (ACA) was examined in Influenza A virus (IAV)-infected MDCK cell cultures and mice. Synergistic, antagonistic, or indifferent antiviral
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