What does Hypersensitization mean?
: to cause extreme or excessive sensitivity in : to make (something or someone) hypersensitive hypersensitize tumor cells to chemotherapeutic agents … subdued by censorship and hypersensitized by inherited and actual grievances.—
What is the best definition of hypersensitivity?
Hypersensitivity (also called hypersensitivity reaction or intolerance) refers to undesirable reactions produced by the normal immune system, including allergies and autoimmunity. They are usually referred to as an over-reaction of the immune system and these reactions may be damaging and uncomfortable.
What are the 4 types of hypersensitivity reactions?
The four types of hypersensitivity are:
- Type I: reaction mediated by IgE antibodies.
- Type II: cytotoxic reaction mediated by IgG or IgM antibodies.
- Type III: reaction mediated by immune complexes.
- Type IV: delayed reaction mediated by cellular response.
What is a Type 1 hypersensitivity reaction?
Type I hypersensitivity is also known as an immediate reaction and involves immunoglobulin E (IgE) mediated release of antibodies against the soluble antigen. This results in mast cell degranulation and release of histamine and other inflammatory mediators.
What is another word for hypersensitive?
In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for hypersensitive, like: emotional, allergic, fastidious, jumpy, neurotic, hypersensitized, hypersensitised, sensitized, sensitised, supersensitive and supersensitized.
What is the definition of brachial?
: of, relating to, or situated in the arm or an armlike process the brachial artery of the upper arm.
What is an example of hypersensitivity?
Examples include anaphylaxis and allergic rhinoconjunctivitis. Type II reactions (i.e., cytotoxic hypersensitivity reactions) involve immunoglobulin G or immunoglobulin M antibodies bound to cell surface antigens, with subsequent complement fixation. An example is drug-induced hemolytic anemia.
What is another word for hypersensitivity?
What are the 5 types of allergic reactions?
What are the four types of allergic reactions?
- bronchial asthma,
- allergic rhinitis,
- allergic dermatitis,
- food allergies,
- allergic conjunctivitis (eye inflammation) and.
- anaphylaxis (allergic shock).
What is the most common type of hypersensitivity?
Type I hypersensitivity (or immediate hypersensitivity) is an allergic reaction provoked by re-exposure to a specific type of antigen referred to as an allergen….
| Type I hypersensitivity | |
|---|---|
| SEM of miscellaneous plant pollens: Pollens are very common allergens. | |
| Specialty | Immunology |
What is a Type 3 hypersensitivity reaction?
In type III hypersensitivity reaction, an abnormal immune response is mediated by the formation of antigen-antibody aggregates called “immune complexes.” They can precipitate in various tissues such as skin, joints, vessels, or glomeruli, and trigger the classical complement pathway.
What is an example of type 3 hypersensitivity?
Examples of type III hypersensitivity reactions include drug-induced serum sickness, farmer’s lung and systemic lupus erythematosus.
Which is the best definition of hypersensitivity?
1. Abnormal sensitivity, a condition in which there is an exaggerated response by the body to the stimulus of a foreign agent. 2. In endocrinology, an excessive target tissue response to a hormone. Synonym(s): hormone hypersensitivity Farlex Partner Medical Dictionary © Farlex 2012 hypersensitivity
How is hypersensitivity related to autoimmune allergies?
Hypersensitivity. Hypersensitivity (also called hypersensitivity reaction or intolerance) refers to undesirable reactions produced by the normal immune system, including allergies and autoimmunity. They are usually referred to as an over-reaction of the immune system and these reactions may be damaging, uncomfortable, or occasionally fatal.
What is the difference between delayed and immediate hypersensitivity?
delayed hypersensitivity (DH) (delayed type hypersensitivity (DTH)) the type of hypersensitivity exemplified by the tuberculin reaction, which (as opposed to immediate hypersensitivity) takes 12 to 48 hours to develop and which can be transferred by lymphocytes but not by serum.
Which is involved in a type IV hypersensitivity reaction?
A Type IV hypersensitivity reaction is mediated by T cells that provoke an inflammatory reaction against exogenous or endogenous antigens. In certain situations, other cells, such as monocytes, eosinophils, and neutrophils, can be involved.