Chronic Inflammation Flashcards
cell population in inflammation is mostly
lymphocytes
plasma cells
macrophages
fibroblasts
clinical presentations can be
loss of function
malaise and weight loss
when do we see chronic inflammation?
arising from acute inflammation
arising as a primary lesion
Granulation tissues us a characteristic of…
organisation
results in healing and repair
leads to fibrosis and formation of a scar
Granulation tissue mechanism
capillaries grow into inflammatory mass
access plasma proteins
macrophages move from blood to tissue
fibroblasts lay down collagen to repair damaged tissue
collagen replaces inflammatory exudate
fibroblasts lay down ……….. to repair damaged tissue
collagen
macrophages move from
blood to tissue
collagen replaces
inflammatory exudate
Products of granulation tissue
fibrous tissue (scar)
fibrosis as a problem
chronic inflammation
fibrosis
the formation of excess fibrous connective tissue in an organ or tissue to repair
autoantibodies directed against own cell components (AUTOANTIGENS)
disease is called?
autoimmune disease
tissue components
granulation tissue
collagen
two types of lymphocyte
T cell
B cell
Lymphocyte 2 main functions
immune response
immune memory
Lymphocytes are part of the ………… system
immune
Plasma cell is a
differentiated B cell
plasma cells produces
antibodies
B cells differentiate into
plasma cells
T cells produce
cytokines
interferons
Cytokines attract, hold and activate
macrophages
interferons have
antiviral effects
NK cells destroy
antigens and cells
Macrophage (phagocyte)role in the immune system is an
antigen presenting cell
Macrophages remove
debris
macrophages take over from
neutrophils
Fibroblasts make and assemble
collagen
Granulomatous inflammation is stimulated by
indigestible antigen
body cannot get rid of it
Granulomas
aggregates of epithelioid macrophages in tissues
A giant cell
is a mass formed by the union of several distinct cells (usually macrophages), often forming a granuloma
4 types of giant cells
langhans
foreign body
silicone
warthin-finkeldy
Infectious granulomatous diseases
tuberculosis
leprosy
syphilis
sequence of events
acute inflammation
organisation
granulation tissue
macrophages remove debris