| In addition to its photodynamic properties, hypericin is also hydrophobic and binds to a variety of cell and enveloped virus membranes. |
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| The two compounds considered important in the plant's anti-depressant activity are hypericin and hyperforin. |
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| St.John's Wort contains hypericin, which inhibits monoamine oxidase, a chemical associated with depression. |
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| The antitumor properties of St. John's wort are attributed to hypericin, which is a powerful photosensitizer. |
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| Aloe emodin is an anthraquinone derivative similar in structure to the known photodynamic sensitizer hypericin. |
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| For the best results, a standardised extract of the active ingredient hypericin needs to be taken for six weeks. |
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| The transfer of one electron from an electron donor to an excited state of hypericin generates its corresponding semiquinone radical anion. |
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| It can be concluded that iodinated derivatives of hypericin do not show an increased cytotoxic effect upon irradiation in either monolayers or spheroids. |
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| Initial attention was drawn to hypericin and pseudohypericin since they inhibit the enzyme monoamine oxidase, as do several pharmaceutical antidepressants. |
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| The natural presence of hypericin, which gives it its red colour, can however make it photo-sensitive. |
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| Use of hypericin or pseudohypericin for the preparation of a pharmaceutical composition useful in the treatment of viral infections. |
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| Topical hypericin has demonstrated safety in a Phase 1 clinical study in healthy volunteers. |
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| Both products contained 0.3 percent hypericin. |
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| Based on this and other in vitro evidence, it has been proposed that hyperforin, and not hypericin, plays a major role in the antidepressant activity of St. John's wort. |
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| Use of at least one aromatic polycyclic dione selected from hypericin, pseudohypericin and salts thereof for the manufacture of a medicament for the treatment of a disease caused by a retrovirus. |
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| It contains something called hypericin which mimics serotonin in the brain and therefore works as an anti-depressant. |
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| Also St John's Wort contains hypericin which mimics the mood-boosting chemical seratonin in the brain and can treat mild anxiety and fatigue. |
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| Skin hypericin content is determined through fluorescence emission with a fiber optic attachment to a spectrofluorimeter. |
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| Glandule filled with oil and less numerous dark dots containing red dye, hypericin are on leaves. |
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| At the moment, St John's Wort is classed as a food supplement which is ridiculous as the herb contains an active ingredient, hypericin, that's as powerful as any drug. |
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| Hypericin may give promise to patients with AIDS because it has inhibited retroviral infections in animal and laboratory tests. |
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