Basic Path high yield Flashcards
Apoptosis requires this, which necrosis does not
ATP
Pyknosis, shrinkage, basophilia, blebbing are associated with
Apoptosis
Sites of coagulative necrosis
Heart, liver, kidney
Sites of liquefactive necrosis
Brain, abcesses, pleural effusion
Causes of caseous necrosis
TB, fungi
Site of fatty necrosis
pancreas
Area in brain most susceptible to ischemia
Watershed area: borders of ACA, MCA and PCA
Area in heart most susceptible to ischemia
Subendocardium, LV
Area in kidney most susceptible to ischemia
medulla (prox tubule and TAL)
Area in liver most susceptible to ischemia
Zone III: area surrounding central vein
Area in GI tract most susceptible to ischemia
Splenic flexure
What happens to TPR, Cardiac output and body temp in Hypovolemic/cardiogenic shock?
Increased TPR, Decreased Cardiac output, cold and clammy skin
What happens to TPR, cardiac output and body temp in septic shock?
Decreased TPR, Increased cardiac output, hot, moist skinq
Stage 1 of wound healing:
Inflammatory: platelets, neutrophils, macrophages, increased permeability, migration
Stage 2 of wound healing
Proliferative: fibroblasts, endothelial cells, keratinocytes, granular tissue, angiogenesis, dissolution of clot, would contraction
Stage 3 of wound healing
Remodeling: fibroblasts, type III collagen replaced by type I
Diseases involving granulomas
TB, Sarcoidosis, Crohns, Silicosis, Wegeners, Churg Strauss, M. leprae, B, henslae
Characteristics of transudate
Low amount of cells, low protein, SG<1.012, increased hydrostatic pressure, decreased oncotic pressure, sodium retention
Characteristics of exudate
High amount of cells, high protein, SG>1.020
Primary amyloidosis is characterized by deposition of what
Ig light chains, ex: multiple myeloma
Neoplasia where cells haven’t invaded basement membrane
Carcinoma in situ
Hyperplasia, metaplasia and dysplasia are all
reversible
Anaplasia, desmoplasia, neoplasia are all
irreversible
Cachexia is mediated by these cytokines
TNF alpha, IFN gamma, IL-6
Barrett’s esophagus is associated with
esophageal adenocarcinoma
Oncogene gaining function in MEN2A and 2B
ret
Oncogene gaining function in colon carcinoma
ras
Oncogene gaining function in follicular lymphoma
bcl-2 (antiapoptotic)
Oncogene gaining function in Burkitt lymphoma
c-myc
Oncogene gaining function in CML
abl
Tumor suppressor gene losing function in retinoblastoma
Rb (inhibits EF-2)
Tumor suppressor gene losing function in many cancers, Li Fraumeni syndrome
p53 (blocks G1–>S)
Tumor suppressor gene losing function in colorectal cancer
APC
Tumor suppressor gene losing function in melanoma
p16/BRAf
Tumor marker for Hepatocellular carcinoma and germ cell tumors
Alpha fetoprotein
Tumor marker for pancreatic adenocarcinoma
CA19-9
Tumor marker for ovarian cancer
CA125
Ectopic ACTH (Cushings syndrome), SIADH, Lambert eaton syndrome are all paraneoplastic syndromes resulting from what cancer?
Small cell lung carcinoma
Psammoma bodies are found in these 4 tumors:
Papillary adenocarcinoma of the thyroid, meningioma, mesothelioma, serous papillary cystadenocarcinoma of the ovary
Top 3 incidences of cancer:
- Breast/prostate; 2. Lung; 3. Colorectal
Top 3 cancer mortalities
- Lung; 2. Breast/prostate; 3. colorectal
Most common cancer to metastasize to brain
Lung
Most common cancer to metastasize to liver
Colon
Most common cancer to metastasize to bone
Prostate/breast
Single breaks in two acrocentric chromosomes resulting in one large and one small chromosome accompanied by a loss of genetic info, common in Down Syndrome
Robertsonian translocation
Effect of Bcl-2 on apoptosis
inhibits apoptosis and keeps cell alive
effect of bax on apoptosis
facilitates apoptosis
TNF alpha and FAS (CD95) are AKA what?
Death receptors, binding facilitates apoptosis
type of calcification in tissues caused by hypercalcemia
metastatic calcification
type of calcification in previously damaged tissue with no elevation in serum Ca
dystropic calcification
wear and tear pigment, yellowish, fat soluble
lipofuscin
2 groups of cell adhesion molecules that bind leukocytes to endothelial cells
ICAM (on endothelial) and integrins (on leukocytes)
5 chemotactic factors for neutrophils
C5a, LTB4, IL-8, bacterial products and fibrin split products
2 major pathways in arachidonic acid metabolism
cyclooxygenase pathway and lipooxygenase path
type of inflammation characterized by epithelioid histiocytes and giant cells
granulomatous inflammation
what is virchow’s triad?
3 influences on thrombus formation: hypercoagulability, venous stasis and endothelial injury
5 factors promoting platelet aggregation
TXA2, ADP, thrombin, collagen, platelet activating factor
product of the COX pathway limiting further platelet aggregation
PGI2
Vitamin K dependent clotting factors (and thus affected by warfarin)
factors 2,7,9,10, protein C and S
factors inhibited by antithrombin 3
thrombin, factors 9-12
fibrinolytic protease
plasmin
what converts plasminogen to plasmin
tpa
what do lines of Zahn indicate?
arterial thrombus, the lines are from bloodflow
venous thrombus that gains access to arterial circulation through a right-to-left shunt
paradoxical embolus