Psoralen (also called psoralene) is the parent compound in a family of natural products known as furocoumarins. It is structurally related to coumarin by the addition of a fused furan ring, and may be considered as a derivative of umbelliferone. Psoralen occurs naturally in the seeds of Psoralea corylifolia, as well as in the common fig, celery, p...
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http://en.wikipedia.org/wiki/Psoralen
A substance from plants that is sensitive to light (or can be activated by light). Psoralens are used together with UV light to treat psoriasis, vitiligo, and skin nodules of cutaneous T-cell lymphoma. They are also being studied in the treatment of graft-versus-host disease. Psoralen is a type of furocoumarin. An example of a psoralen is methoxsal...
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http://www.cancer.gov/dictionary?expand=P
<pharmacology> Drug capable of forming photoadducts with nucleic acids if irradiated with ultraviolet light. ... (06 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
(sor´ә-lәn) any of the constituents of certain plants, such as Psoralea corylifolia, that have the ability to produce phototoxic dermatitis when an individual is first exposed to it and then to sunlight; certain perfumes and drugs, such as methoxsalen, contain psoralens.
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http://www.encyclo.co.uk/local/21001
Type: Term Pronunciation: sōr′ă-len Definitions: 1. A phototoxic drug used by topical or oral administration for the treatment of vitiligo and psoriasis. Also present in oil of bergamot perfume and in fruits and vegetables such as limes, which may cause photosensitization.
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http://www.medilexicon.com/medicaldictionary.php?t=73547
Psoralen: Any of a number of drugs and other substances containing chemicals that react with ultraviolet (UV) light to cause darkening of the skin.
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http://www.medterms.com/script/main/art.asp?articlekey=9866
a toxic substance, CHO, found in certain plants, including parsnips, used to increase the response to ultraviolet light in the treatment of severe cases of acne and psoriasis.
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https://www.infoplease.com/dictionary/psoralen
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