| psora | <medicine> A cutaneous disease; especially, the itch. Origin: L, fr. Gr. Source: Websters Dictionary (01 Mar 1998) |
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| psoralen | <pharmacology> Drug capable of forming photoadducts with nucleic acids if irradiated with ultraviolet light. (06 Oct 1997) |
| psoralen synthase | <enzyme> Nadph-dependent cytochrome p-450 monooxygenase which converts (+) marmesin by initial hydroxylation at c3', followed by release of water, acetone and psoralen Registry number: EC 1.14.13.- Synonym: psoralen 5-monooxygenase (26 Jun 1999) |
| psoralens | <chemical> Substances found in many different plants, especially psoralea corylifolia (legume). They are used for skin diseases, especially vitiligo and as sunscreens. They interact with nucleic acids and are also used as research tools. Psoralens have a coumarin molecule with a furan ring. Pharmacological action: dermatologic agents, photosensitizing agents. (12 Dec 1998) |