Module 11 Flashcards
extracellular bacteria cause disease by
inducing inflammation which results in tissue destruction at the site of infection and producing toxins such as endotoxins or exotoxins
the principal mechanisms of innate immunity are
complement activation, phagocytosis, and the inflammatory response
what activates the alternative complement pathway
LPS in the cell walls of gram negative bacteria
what activates the lectin complement pathway
mannose expressing bacteria
TLR and FC receptor signaling can induce what
the production of cytokines and acute phase proteins
what part of the alternative pathway binds to the microbe cell
c3b
what is the c3 convertase of the alternative pathway
c3bBb
what is the c5 convertase of the alternative pathway
c3bBbc3bc5
lectin pathway initiation
binding of mannose to mannose binding lectin
what is the c3 convertase of the lectin pathway
c4b2a
what is the c5 convertase of the lectin pathway
c4b2ac3bc5
killing of phagocytosed microbes is done by what
ROS and NO
the principal protective immune response functions to block infection, eliminate microbes, and neutralize toxins
humoral immunity
polysaccharide ig
igm
protein ig
iga igg
what are effector mechanisms
phagocytosis, classical complement pathway, IgM and IgG and neutrailization
protein antigens from extracellular bacteria can activate what
cd4 helper t cells
TH1 generates what
IFN-y
TH17 mediates what
responses that eliminate extracellular microbes
IL-17 does what
causes inflamation
IFN-y does what
activates macrophages to phagocytoes and kill bacteria
what are the consequences of host response to extracellular bacteria
inflammation and spetic shock
what causes septic shock
disseminated infections by gram neg bacteria