title: Identification of an allergen related to Phl p 4, a major timothy grass pollen allergen, in pollens, vegetables, and fruits by immunogold electron microscopy.
abstract: Group 4 grass pollen allergens represent 60 kDa glycoproteins recognized by 70% of patients sensitive to these pollens. An antiserum against purified Phl p 4 from timothy grass pollen was used to investigate various pollens, fruits, and vegetables for Phl p 4-related allergens by immunogold electron microscopy. In timothy grass, mugwort, and birch pollens, allergens were located in the wall, and in timothy grass and birch pollens additionally in the cytoplasm. In peanut, apple, celery root, and carrot root, only cytoplasmic areas were labeled. Group 4-related allergens thus occur in pollens of unrelated plants and in plant food and may therefore contribute to crossreactivities in patients allergic to various pollens and plant food.
authors.affiliation: Institute of Medical Physics and Biophysics, University of Münster, Germany.
authors.forename: Monika
authors.initials: M
authors.lastname: Grote
authors.forename: Sabine
authors.initials: S
authors.lastname: Stumvoll
authors.forename: Rudolf
authors.initials: R
authors.lastname: Reichelt
authors.forename: Jonas
authors.initials: J
authors.lastname: Lidholm
authors.forename: Valenta
authors.initials: V
authors.lastname: Rudolf
mesh_terms: D000485:Allergens / Q000276:immunology* / Q000378:metabolism; D000818:Animals; D019306:Artemisia / Q000276:immunology* / Q000378:metabolism; D029662:Betula / Q000276:immunology* / Q000378:metabolism; D005638:Fruit / Q000276:immunology* / Q000378:metabolism; D006801:Humans; D007150:Immunohistochemistry; D016253:Microscopy, Immunoelectron; D031784:Phleum / Q000276:immunology* / Q000378:metabolism; D010940:Plant Proteins / Q000276:immunology / Q000378:metabolism; D011058:Pollen / Q000276:immunology* / Q000378:metabolism; D011817:Rabbits; D014675:Vegetables / Q000276:immunology* / Q000378:metabolism
chemical_list: D000485:Allergens; C100980:Phl p 4 protein, Phleum pratense; D010940:Plant Proteins