Inflammation Flashcards
______ are generated by intrinsic oxidases in ER of cells and in PMNs, also by radiation
Free radicals
______ chemically damage proteins, DNA, RNA, and trigger lipid peroxidation in cell membranes
Free radicals
2O2- + 2H+ -> H2O2 + O2- (catalyzed by ______)
superoxide dismutase
2OH + 2GSH -> 2H2O + GSSG (catalyzed by _______)
glutathione peroxidase
Acute or chronic inflammation? Dilation and increased flow, increased permeability resulting in transudate or exudate
Acute
Acute or chronic inflammation? Duration of days
Acute
Acute or chronic inflammation? Onset over the course of days
Chronic
Acute or chronic inflammation? Sentinel/local cells in the tissue
Chronic
Acute phase cell(s)
Neutrophils
Cell adaptation: decrease in size and functional capacity of the cell
atrophy
Cell adaptation: increase in number of cells in a tissue
hyperplasia
Cell adaptation: increase in size of cell to enable increase in cell function
hypertrophy
Cell adaptation: replacement of one type of tissue with another in response to injury
metaplasia
Cell death by _____ tends to affect scattered, individual cells
apoptosis
Chemical species with an unpaired electron
Free radicals
Chronic phase cell(s)
Macrophages, lymphocytes, (eosinophils)
Eicosanoids are ________(pre-formed/synthesized on demand) and found in ________
on demand;WBCs, platelets, and endothelial cells
eNOS are ________(pre-formed/synthesized on demand) and found in ________
on demand; endothelial cells
Fe2+ + H2O2 -> Fe3+ + OH + OH-
Fenton Reaction
Five cardinal signs of injury
redness, swelling, pain, heat, loss of function
Fragmentation of nuclei is also known as ______.
karyorrhexis
H2O2 -> O2 + 2H2O (catalyzed by ______)
Catalase
H2O2 + O2- -> OH + OH- + O2
Haber-Weiss Reaction
Hagemen Factor activates _____ (3)
Thrombin/Coagulation pathway, plasmin, and Kallikrein pathway
Histamine is _________ (pre-formed/synthesized on demand)
pre-formed
Histamine is found in ________.
Platelets, mast cells, basophils
In ______, chromosomal DNA reflects nonspecific degradative smear of DNA fragments
necrosis
In hypoxia, _________ is proteolytically converted to xanthine _______, which produces oxygen radicals
xanthine dehydrogenase; oxidase
Inflammatory reaction characterized by accumulation of modified macrophages (epithelioid cells), giant cells, lymphocytes, and occasional plasma cells
Granulomatous infection
iNOS are ________(pre-formed/synthesized on demand) and found in ________
on demand; endothelial cells, macrophages, and smooth muscle
nNOS are ________(pre-formed/synthesized on demand) and found in ________
on demand; neural parenchyma
Nucleus shrinks and chromatin becomes deeply basophilic and clumpy
pyknosis
Outcomes of Acute Inflammation
Complete resolution, scarring, abscess, progression to chronic inflammation
PAF is _________ (pre-formed/synthesized on demand) and found in _______.
on demand; platelets, neutrophils, basophils, macrophages, mast cells, and endothelial cells
Pyknotic clumps are broken down and disappear in the process of _____.
karyolysis
Reversible or irreversible? Activation of lysosomal enzymes
Irreversible
Reversible or irreversible? Decrease in ATP
Reversible
Reversible or irreversible? Decrease in Na pump activity
Reversible
Reversible or irreversible? Decrease in protein synthesis
Reversible
Reversible or irreversible? Decrease in tissue pH
Reversible
Reversible or irreversible? DNA and protein degradation
Irreversible
Reversible or irreversible? Increase in glycolysis
Reversible
Reversible or irreversible? Increase in intracellular calcium concentration
Irreversible
ROS are ________(pre-formed/synthesized on demand) and found in ________
on demand; leukocytes and macrophages