Allergy Flashcards
content of an allergen which promote barrier dysfunction and increase allergen penetration
protease
Th2 cells secrete cytokine favoring IgE synthesis and eosinophilia such as
IL-4
IL-5
IL-13
IL-4 and IL-13 play a key role in?
immunoglobulin isotype switching to IgE
cytokines that are important in development and differentiation of eosinophils
IL-5
IL-9
contributes to mast cell activation
IL-3
IL-4
IL-9
cells that are typically involved in the eradication of intracellular organisms
Th1 cells
chronic lesions of allergic reactions are characterized by infiltration of
Th1 cells
Th17 cells
promotes tissue inflammation
Th1
Th2
Th17
subset of T cells that plays a critical role in expression of allergic and autoimmune diseases
T regulatory cells (Treg) cells
CD4*CD5 Treg cells expresses specifically
FOXP3
dendritic cells, langerhans cells, monocytes and macrophages
APC
dendritic cells and langerhans cells prime the näive T cells. what phase?
sensitization phase
monocytes and macrophages activate memory T cell responses. what pahse?
elicitation phase
myeloid DC or plasmacytoid DC
mature DCs
derived from CD34; travel to peripheral tissue and undergoes tissue-specific maturation
mast cells
widely distributed throughout the connective tissue, lie adjacent to blood vessels and beneath epithelial surface to automatically participate in allergic reactions
mast cells
induce airway hyperresponsiveness
major basic protein
common granule mediator for allergy
histamine
bronchoconstriction and intestinal hypermotility is caused by what mediators of HSR
lipid mediators (PAF, PGD2 and LTC)
the immediate response after allergen is introduced into target organs
early phase response
rubbing the nose upward with the palm of their hand
allergic salute
allergy that is more common in infant and young children
food allergies
children receiving inhaled corticosteroids may experience?
growth suppression
patients with acute asthma may experience a drop in systolic blood pressure during inspiration >10mmHg. this is called?
pulsus paradoxus