ANAPHYLAXIS

Pronunciation (US):

(GB):

 Dictionary entry overview: What does anaphylaxis mean? 

• ANAPHYLAXIS (noun)
  The noun ANAPHYLAXIS has 1 sense:

1. hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

  Familiarity information: ANAPHYLAXIS used as a noun is very rare.

 Dictionary entry details 

• ANAPHYLAXIS (noun)

Sense 1

Meaning:

Hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance

Classified under:

Nouns denoting stable states of affairs

Hypernyms ("anaphylaxis" is a kind of...):

hypersensitivity reaction (an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock)

Domain category:

drug (a substance that is used as a medicine or narcotic)

Hyponyms (each of the following is a kind of "anaphylaxis"):

anaphylactic shock (a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure)

Derivation:

anaphylactic (related to the hypersensitivity known as anaphylaxis)

 Context examples 

Anaphylaxis is a severe reaction that can be life-threatening.

(Allergy, NIH: National Institute of Allergy and Infectious Diseases)

People with ISM have an abnormally elevated number of mast cells, an immune cell type which contributes to anaphylaxis and other allergic symptoms by releasing histamine and other chemicals that cause inflammation.

(NIAID scientists link cases of unexplained anaphylaxis to red meat allergy, National Institutes of Health)

When later exposed to milk, mice receiving no microbes or microbes from milk-allergic children produced allergic antibodies and experienced anaphylaxis, a potentially life-threatening allergic reaction.

(Gut microbes from healthy infants block milk allergy development in mice, National Institutes of Health)

Progression of anaphylaxis into systemic shock, which is characterized by significant reduction in tissue perfusion which leads to hypoxia and hypotension, and can lead to death if untreated.

(Anaphylactic shock, NCI Thesaurus)

Systemic anaphylaxis is the most dramatic example of an immediate hypersensitivity reaction; is uncommon and unexpected in nature and occasionally results in a fatal outcome.

(Anaphylactic shock, Food and Drug Administration)

This process is involved in platelet aggregation, inflammation and anaphylaxis.

(Platelet Activating Factor Signaling Process, NCI Thesaurus)

Lodoxamide tromethamide also prevents the release of slow-reacting substances of anaphylaxis (SRS-A) and inhibits eosinophil chemotaxis.

(Lodoxamide Tromethamine, NCI Thesaurus)

The complement system also plays a role in antibody-dependent cytolysis, anaphylaxis, phagocytosis, opsonization, chemotaxis, and hemolysis.

(Complement Degradation Process, NCI Thesaurus)

Allergies can be life-threatening when they cause anaphylaxis, an extreme reaction with constriction of the airways and a sudden drop in blood pressure.

(Scientists discover immune cell subtype in mice that drives allergic reactions, National Institutes of Health)

This process is involved in regulating the extent of platelet aggregation, inflammation and anaphylaxis.

(Negative Regulation of Platelet Activating Factor Signaling, NCI Thesaurus)