Allergen Profile of Protophormia terraenovae, Other Species of Calliphoridae, and Lumbricus terrestris in Anglers Allergic to Maggots in Caceres, Spain

作者：Porcel Carreno S L; Pineda de la Losa F; Frontera Carrion E M; Sanchez Gonzalez A B; Rodriguez Martin E; Jimenez Timon S; Alvarado Arenas M; de la Hoz Caballer B; Dieguez Pastor M C; Hernandez Arbeiza F J

来源：Journal of Investigational Allergology and Clinical Immunology, 2013, 23(3): 176-182.

• Protophormia terraenovae
• Maggot
• Allergens
• Allergy
• Anglers
• Fish bait

Background: Our group previously found that up to 7% of amateur anglers in Caceres, Spain may be allergic to the larvae of Protophormia terraenovae (order Diptera, family Calliphoridae) used as live bait for fishing. %26lt;br%26gt;Objective: To identify the pattern of major allergens in P terraenovae and other species of Calliphoridae. %26lt;br%26gt;Materials and Methods: Extracts of P terraenovae, Calliphora vomitoria, Lucilia sericata and Lumbricus terrestris were characterized using sodium dodecyl sulfate polyacrylamide gel electrophoresis and IgE-immunoblotting techniques in individual sera from 24 patients with a positive skin test result and/or specific IgE determination (enzyme-linked immunosorbent assay [ELISA]) to P terraenovae. ELISA and IgE-immunoblotting inhibition studies were also performed to identify potential cross-reactive allergens between these species. %26lt;br%26gt;Results: IgE-immunoblotting with P terraenovae showed a band of 15.3 kDa recognized by 15 patients, in addition to 2 further allergens of 22.8 kDa and 69 kDa. For C vomitoria, 5 bands of 73, 46, 40, 28, and 14 kDa were observed. For L sericata, 2 major allergens of 73 kDa and 14 kDa were observed. In the case of L terrestris, IgE from 13 patients recognized 1 allergen of around 15.5 kDa. IgE-immunoblotting and ELISA inhibition revealed the presence of cross-reactivity, mainly between L terrestris and P terraenovae. %26lt;br%26gt;Conclusions: P terraenovae appears to have species-specific allergens and allergens shared with C vomitoria and L sericata. Striking immunological cross-reactivity was observed between P terraenovae and L terrestris. An allergen of 15-16 kDa could be involved in this phenomenon.

• 出版日期2013