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De Magalhães CR, Schrama D, Fonseca F, Kuehn A, Morisset M, Ferreira SR, Gonçalves A, Rodrigues PM. Effect of EDTA enriched diets on farmed fish allergenicity and muscle quality; a proteomics approach. Food Chem 2019; 305:125508. [PMID: 31622806 DOI: 10.1016/j.foodchem.2019.125508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 09/05/2019] [Accepted: 09/09/2019] [Indexed: 10/26/2022]
Abstract
Fish is one of the most common elicitors of food-allergic reactions worldwide. These reactions are triggered by the calcium-binding muscle protein β-parvalbumin, which was shown to have reduced immunoglobulin E (IgE)-binding capacity upon calcium depletion. This work aimed to reduce gilthead seabream allergenicity using diets supplemented with a calcium chelator. Three experimental feeds were tested, differing in ethylenediaminetetraacetic acid (EDTA) supplementation, and its effects on muscle and parvalbumin's IgE-reactivity were analyzed. Chromatographic determination of EDTA showed no accumulation in the muscle and sensory results demonstrated that the lowest concentration did not affect fish quality as edible fish. Proteomics revealed one protein related to muscle contraction with significantly different relative abundance. Immunoblot assays performed with fish-allergic patients sera indicated a 50% reduction in IgE-reactivity upon EDTA presence. These preliminary results provide the basis for the further development of a non-GMO approach to modulate fish allergenicity and improve safety of aquaculture fish.
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Affiliation(s)
| | - Denise Schrama
- CCMAR, Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal.
| | - Flávio Fonseca
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - Campus Zona Leste, Av. Cosme Ferreira, 8045, Bairro Gilberto Mestrinho, 69086-475 Manaus, AM, Brazil.
| | - Annette Kuehn
- Luxembourg Institute of Health, Department of Infection and Immunity, 29, Rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg.
| | - Martine Morisset
- National Unit of Immunology and Allergology, Centre Hospitalier de Luxembourg, Luxembourg; Allergy Unit, Angers University Hospital, 4 Rue Larrey, 49993 Angers, France.
| | - Sara R Ferreira
- CCMAR, Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal.
| | - Amparo Gonçalves
- IPMA I.P., Portuguese Institute for the Sea and Atmosphere, Division of Aquaculture and Upgrading, Rua Alfredo Magalhães Ramalho, 6, 1495-006 Lisboa, Portugal.
| | - Pedro M Rodrigues
- CCMAR, Centre of Marine Sciences, University of Algarve, 8005-139 Faro, Portugal.
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