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Each food fish can cause specific allergies
Date:12/11/2013

This news release is available in German.

Leipzig. Food allergies are evidently much more specific than previously assumed. More precise tests may allow allergy sufferers more freedom of food choice in the future. This is the result of studies carried out by the Helmholtz Centre for Environmental Research (UFZ), the University of Leipzig and the Haukeland University Hospital in Bergen. The researchers examined patients with a Nile perch allergy. Being allergic to Nile perch does not mean also being allergic to cod. Furthermore, species-specific allergens were identified that may help to improve avoidance strategies against such food allergies and make them more specific, the researchers write in the scientific journal Journal of Investigational Allergology and Clinical Immunology (JIACI).

Fish is one of the most important foods worldwide. It is considered healthy, due to international fish trade it is obtainable everywhere and it is therefore consumed in increasing amounts. In the industrialised countries around 28 kilograms of fish is now consumed per capita and year, and the trend is on the increase. The rising supply and demand for seafood is associated with an increased risk of fish allergies. The most common allergen in fish and crustaceans is parvalbumin, a calcium-binding protein. Other substances, however, are also suspected triggers of allergies, such as a group of proteins in cell metabolism called aldehyde dehydrogenases. It is possible that some of these proteins have been overlooked because they are overshadowed by the more frequent parvalbumin and have therefore been underestimated until now.

The most direct way of identifying new allergens is through analysing the serum of affected patients and the proteins of the allergy source. If the
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Contact: Tilo Arnhold
presse@ufz.de
49-341-235-1635
Helmholtz Centre for Environmental Research - UFZ
Source:Eurekalert  

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