Pathology Flashcards
What does apoptosis use for an energy source?
ATP
Is DNA laddering sensitive or specific for apoptosis?
sensitive
What type of chromosome damage does radiation produce?
dsDNA
Is the intrinsic or extrinsic pathway of apoptosis used during embryogenesis?
intrinsic
What are the two pro-apoptosis proteins?
BAX and BAK
Which protein does Bcl-2 inhibit?
Apaf-1
What is the fuction of Apaf-1?
induce caspases
Which CD molecule is the Fas ligand?
CD95
What are the two pro-apoptotic molecules released by Tcells?
perforin and granzyme B
Which molecule mediates thymic medullary negative selection?
Fas Ligand
Which bacteria can produce caseous necrosis?
Nocardia
How does calcium appear during fat necrosis?
dark blue
What type of necrosis take place during HSP and Churg-Strauss?
fibrinoid
What type of necrosis takes place during malignant HTN?
fibrinoid
Damage to what organ often triggers irreversible apoptosis?
mitochondria
What type of immune reaction takes place in response to a foreign body?
granuloma
Granulomas are often surrounded by a ring of what type of immune cell?
lymphocytes
An excess of what type of tissue is found in Keloids?
granulation
What two specific types of cells in the brain are most susceptible to ischemia?
pyramidal or Hippocampus
Purkinje of cerebellum
What is the name for the skin lesion produced by pseudomonas?
Ecthyema gangrenosum
What does ecythema gangrenosum look like?
black and necrotic
Pseudomonas can infect people with what specific immune cell deficiency?
neutropenia
Which selectin is on endothelial cells?
E and P
Which selectin is on neutrophils?
L-selectin
Which cells express ICAM-1?
endothellial
What are the four names for the protein that binds ICAM-1?
CD18
β2-integrin
LFA1
MAC1
Which protein mediates transmigration through the endothelial cells?
PECAM-1
Chromatolysis is involved after injury to what structure?
axon
What three reactions take place during chromatolysis?
cellular swelling
displacement of nucleus
dispersion of Nissl
Does dystrophic calcification take place during normocalcemia or hypercalcemia?
normo
Does metastatic calcification take place during normocalcemia or hypercalcemia?
hyper
Does calcium precipitate at a high or low pH?
high
Which three organs are most likely to develop metastatic calcification?
kidney
lungs
gastric mucosa
What are the two odd neutrophil chemotactic proteins?
kallikrein
platelet activating factor
What is the free radical involved in repurfusion injury?
superoxide
What does CCl4 do to liver cell membranes?
lipid peroxidation
Which cytokine mediates smooth muscle cell migration?
PDGF
What does TGF-β do to the cell cycle?
arrest
Which cytokine stimulates fibroblast growth for collagen synthesis?
PDGF
Which cytokine do macrophages secrete to promote macrophage production?
TNF-α
What type of inflammation is caused by bartonella heneslae?
granulomatous
What type of inflammation does Churg-Strauss produce?
granulomatous
What type of inflammation is produced during Francisella tularensis?
granulomatous
What gram-positive bacteria can produce a granuloma?
listeria
What type of inflammation would be produced during Hansen disease?
granulomatous
What protein adheres to RBCs that causes an increase in ESR during inflammation?
fibrinogen
What three diseases can result with a decrease in ESR?
polycythemia
sickle cell
CHF
What does iron oxidation do to membranes?
peroxidation
What does acute iron poisoning do to gastric mucosa?
bleeding
What does chronic iron poisoning do to gastric mucosa?
scarring leading to obstruction
What are the two preferred chelators for iron poisoning?
deferoxamine and deferasirox
What secondary structure is present during amyloidosis?
β-pleated
What protein mediates Primary Amyloidosis?
AL light chains
What protein mediates Secondary Amyloidosis?
Amyloid A
Which two proteins deposit during Heritable Amyloidosis?
mutated transthyreiten or pre-albumin
What protein gets deposited during age related/senile amyloidosis?
wild-type transthyreiten
What protein does p53 activate?
p21
What is the function of p21?
inactivates all CDKs
Which system is known to convert chemicals into carcinogenes?
microsomal mono-oxygenase
What process forms lipofuscin?
lipid peroxidase
Which two specific proteins can carcinomas secrete that let them break through the basement membrane?
collagenase
hydrolases
What is another name for MDR1?
P-glycoprotein
Which two types of cancer are known to express MDR1?
liver and colon
What is metaplasia?
one adult cell type is replaced with another
What is anaplasia?
resembling primitive cells of same tissue
Which type of -plasia may one see giant cells?
anaplasia
What is the exact definition of desmoplasia?
fibrous tissue formation in response to a neoplasm
What are the four carcinomas that spread hematogenously?
renal cell
follicular carcinoma of thyroid
choriocarcinoma
HCC
What is a benign tumor of blood vessels called?
hemangioma