immediate hypersensitivity การใช้

• Mast cells and basophils are the effector cells involved in the immediate hypersensitivity response.
• The most severe of these happen immediately and are categorised as an immediate hypersensitivity reaction.
• With this new classification, the word " allergy " was restricted to type I hypersensitivities ( also called immediate hypersensitivity ), which are characterized as rapidly developing reactions.
• "' Orciprenaline "'( cAMP . Increased cAMP levels are associated with relaxation of bronchial smooth muscle and inhibition of release of mediators of immediate hypersensitivity from many cells, especially from mast cells.
• In allergies involving immediate hypersensitivity, upon exposure to an antigen, antibodies of a type called immunoglubulin E ( or IgE ) are formed that can recognize and bind to the foreign substance.
• The immediate hypersensitivity reaction occurs minutes after exposure and includes release of vasoactive amines and lipid mediators, whereas the late-phase reaction occurs 2 4 hours after exposure and includes the release of cytokines.