title: An investigation of the irritant and allergenic properties of daffodils (Narcissus pseudonarcissus L., Amaryllidaceae). A review of daffodil dermatitis.
abstract: Irritancy of daffodil flowers and bulbs was assessed using various fresh plant preparations, solvent extracts and some of the known Amaryllidaceae alkaloids on guinea pigs. Sensitization was also carried out on guinea pigs using these plant preparations, solvent extracts and 7 fractions obtained after preparative chromatography of the bulb ether extract. Only 1 fraction, containing 2 alkaloids, was capable of inducing delayed hypersensitivity in the animals; the sensitivity achieved, however, was weak. The substances were identified as masonin and homolycorin, which acted as elicitors, but masonin may also be a sensitizer. While homolycorin is a known daffodil constituent, masonin has not been found previously in Narcissus pseudonarcissus. 3 other alkaloids as well as chelidonic acid and isorhamnetin were non-elicitors in the sensitized guinea pigs.
authors.affiliation: Department of Dermatology, University Hospital, Hamburg, FRG.
authors.forename: M
authors.initials: M
authors.lastname: Gude
authors.forename: B M
authors.initials: BM
authors.lastname: Hausen
authors.forename: H
authors.initials: H
authors.lastname: Heitsch
authors.forename: W A
authors.initials: WA
authors.lastname: König
mesh_terms: D000470:Alkaloids / Q000276:immunology / Q000302:isolation & purification; D000485:Allergens; D047151:Amaryllidaceae Alkaloids; D000818:Animals; D003877:Dermatitis, Contact / Q000209:etiology*; D009783:Dermatitis, Occupational / Q000209:etiology*; D005260:Female; D005860:Germany, West; D006168:Guinea Pigs; D007428:Intradermal Tests / Q000379:methods; D007509:Irritants; D010944:Plants / Q000032:analysis
chemical_list: D000470:Alkaloids; D000485:Allergens; D047151:Amaryllidaceae Alkaloids; D007509:Irritants; C057585:homolycorine; C057586:masonin