title: Mantis shrimp allergy.
abstract: We report the case of a 25-year-old female who experienced two immediate episodes of labial, lingual and larynx angiodema after eating fried mantis shrimp (Squilla empusa), a crustacean belonging to the Squillidae family, and a third episode after eating shellfish pudding. Prick by prick tests to mantis shrimp and to other crustacean were positive. Serum specific IgE showed higher values than 0.35 kU/L to extracts from mantis shrimp shell, prawn, large prawn and crab. Serum specific IgE against large prawn tropomyosin were below 0.35 kU/L. Sodium dodecyl sulfate polyacrylamide gel electropheresis (SDS-PAGE) immunoblotting results with raw mantis shrimp shell revealed IgE-binding bands of 46 kDa and 25 kDa, in non reducing and reducing conditions, respectively. Cross-reactivity studies using the enzyme allergo sorbent test (EAST)-inhibition and Immunoblotting-inhibition methods showed the existence of significant cross-reactivity between the IgE-binding proteins present in mantis shrimp and those from prawn, large prawn and small crab.
authors.affiliation: ALLERCEN (Allergy Center) Barcelona, Spain.
authors.forename: R Eiró
authors.initials: RE
authors.lastname: Alonso
authors.forename: B Bartolomé
authors.initials: BB
authors.lastname: Zavala
authors.forename: J M Soler
authors.initials: JM
authors.lastname: Escoda
mesh_terms: D000328:Adult; D000799:Angioedema / Q000382:microbiology; D000818:Animals; D003445:Crustacea / Q000737:chemistry / Q000276:immunology*; D005260:Female; D005512:Food Hypersensitivity / Q000276:immunology*; D006801:Humans; D007073:Immunoglobulin E / Q000032:analysis; D012882:Skin Tests; D014335:Tropomyosin / Q000276:immunology*
chemical_list: D014335:Tropomyosin; D007073:Immunoglobulin E