#Rumor Zero Project # #Unusual Case#
Dust mite allergy and at the same time allergic to cockroach lobsters?
As mentioned earlier, some people who are allergic to pollen are also allergic to fruits and vegetables such as peaches, called pollen-food allergy syndrome (PFAS).
Dust mites and pollen are the most common inhalation allergens and can cause diseases such as allergic rhinitis, asthma, urticaria and more. The cross-allergy between dust mites and food has also attracted more and more attention, and the clinical manifestations are wheals, redness and swelling, itching of the oral mucosa, etc., and even life-threatening severe allergic reactions, called dust mites - food allergy syndrome (DMGAS).
Which foods are closely related to dust mites?
Alas, "shrimp, shrimp, crab, lobster" and other unfortunate tricks that are loved by many Chinese people. Don't look at the same grade as the small mites, but the soft carapaces of these crustacean subphylum belong to the same arachnids as the arachnids to which the dust mites belong.
Protomyosin (TM) was the first cross-allergen to be discovered, linking dust mites, shrimp and even cockroaches.
Mites and shrimp TM amino acid sequence homology is 81%, while cockroaches and shrimp are 82%, which is a bit of a family-like taste.
So Jews never eat shrimp because of religion, and people with dust mite allergies test positive for shrimp myosin IgE. Conversely, Icelandic residents who are allergic to shrimp are also allergic to dust mites, although they have not been exposed to dust mites before.
Therefore, people with dust mite allergy, after eating crustaceans or mollusks such as shrimp and crab snails, have lips or oral itching, tingling, burning, edema, throat tightening, sneezing water, nasal discharge, urticaria or angioedema, etc., and even inhalation of steam from boiled shrimp will cause respiratory allergy symptoms, taking into account the possibility of DMFAS.
Of course, cross-allergens are not necessarily a kind of TM, and there are still many mysteries to be solved in the human body and nature.
Healthy life under the epidemic, self-pressure reduction!
#头条抗疫科普 #
