Inflammation Flashcards
Hallmark of acute inflammation
Increased vascular permeability
Stimuli of acute inflammation
Infx
Necrosis
Foreign bodies
Immune rxns
Mediators that are rapidly secreted by granule exocytosis; synthesized de novo
Cell-derived mediators
Mediators that are produced by the liver (e.g. complements)
Plasma-derived mediators
Specific gravity of an exudate
> 1.012
5 steps of leukocyte extravasation
1) Margination
2) Rolling
3) Tight binding
4) Diapedesis
5) Chemotaxis/ migration
Most common exogenous stimuli for chemotaxis
Bacterial products
Mediators assoc w/ vasodilation
Histamine
Prostaglandins
NO
Primary acute phase mediators in systemic inflamm (fever)
IL-1
TNF
Conditions that present w/ inc ESR
Infx Inflamm Cancer Pregnancy SLE
Conditions that present w/ dec ESR
Sickle cell anemia
Polycythemia
CHF
Morphologic patterns of acute inflammation
Serous Fibrinous Suppurative Ulcerative Pseudomembranous
Outpouring of thin fluid derived from plasma or mesothelial cells
Serous inflammatiom
Biochem d/o presenting w/ skin blisters d/t photosn
Porphyria
Most common variant of porphyria and its deficient enzyme
Porphyria cutanea tarda (URO decarboxylase)