Block 3 high yield Flashcards
Fibrinoid necrosis
Type ? hypersensitivity
Type 3
granuloma with central necrosis
caseating
ie. TB
HER-2/NEU overexpression
breast cancer
KRAS mutation
colorectal cancer
N-MYC gene amplification
neuroblastoma
t(8;14)
Burkitt Lymphoma
t(9;22)
CML
BCR-ABL
CML
“Two hit” hypothesis
lose BOTH tumor suppressor genes
Rb mutation
13q14
retinoblastoma
APC tumor supressor gene
colorectal carcinoma
BCRA1/BCRA2
breast
ovary
prostate
cancers
molecular “policeman”
p53
high glucose use by cancer cells
Warburg Effect
t(14;18)
overexpressed BCL-2
B-cell lymphoma
immortality of cancer cells – evasion of mitotic crisis
maintenance of telomeres
Th1’s polarized by:
IL-12
IL-18
INF-y
Th1’s secrete:
INF-y
TNF
Th17’s polarized by:
TGF-B
IL-1
IL-6
IL-23
Th17’s secrete:
IL-17
IL-22
Th2’s polarized by:
IL-4
Th2’s secrete:
IL-4
IL-5
IL-13
Tfh’s polarized by:
IL-6
IL-21
Thf’s secrete:
IL-4
IL-21
Treg’s polarized by:
IL-2
TGF-B
Treg’s secrete:
IL-10
TGF-B
No Treg’s?
IPEX
out of control T-cells
T-bet
Th1
GATA3
Th2
RORyt
Th17
Bcl-6
Tfh
FOXP3
Treg
Always high MHC II
Always high CD80/86 (B7)
dendrites
need activation to express:
MHC II
costim molecules
macrophages
always express MHC II
need activation to express co-stim molecules
B cells
LFA-1 (leukocyte functional antigen) binds:
ICAM-1
CD2 binds:
LFA-3 (on APC)
TCR chain needing V, J
alpha
TCR chain needing V, D, J
beta
HLA-A, B, C
MHC I
HLA-B27
ankylosing spondylitis
HLA-DR2
MS
hay fever
narcolepsy
SLE
HLA-A3/B14
hemochromatosis
HLA-DQ2/GQ8
Celiac disease
HLA-DR3
DM I
Grave’s Disease
HLA-DR4
RA
DM I
HLA-B53
protection against childhood malaria
Malignancy of hematopoietic cells, starts in bone marrow:
leukemia
Malignancy of hematopoietic cells, starts in lymph nodes:
lymphoma
Leukemia occurring only in adults
Chronic
% blast cell requirement for dx of AML?
20%
M0-M3
neutrophil series
M4-5
monocytic series
M6
erythroid series
M7
megakaryocytic series
LOTS of myeloblasts
MPO negative
AML-M0
LOTS of myeloblasts
AUER rods
MPO positive
no maturation
AML-M1
kind of a lot of myeloblasts
maturing neuts
t(8;21) = better prognosis
AML-M2
LOTS of promyelocytes
TONS of AUER rodes (FAGGOT cells)
t(15;17) in all cases
DIC
AML-M3
lots of myeloblasts
lots of monocytic cells
Extramedullary tumor masses
inv(16) = better prog
AML-M4
increased monocytic cells
NSE positive
extramedullary tumor masses
AML-M5
inc erythroblasts
increased myeloblasts
dyserythropoesis
AML-M6
inc megakaryoblasts
bland blasts
MPO negative
need markers
AML-M7
t(8;21)
M2, good prog
inv(16)
M4, good prog
t(15;17)
M3, good prog
11q23
monocytic, bad prog
FLT-3
tyrosine kinase
monocytic
poor prog
severe pancytopenia
chromosome 5,7 abnormalities
AML with multilineage dysplasia
Atra
pre-chemo for t(15;17)
teenage male with mediastinal mass
ALL
T-Lymphoblastic
TdT+
B-cell lymphoblastic leukemia/lymphoma
worse prog for ALL
T-cell
good prog age for ALL
1-10
good WBC count for ALL
good cytogenetics for ALL
hyperdiploidy
Malaria deaths in a year world wide?
655,000
Most common Plasmodium species?
vivax
falciparum
Life stage of plasmodium that infects hepatocyte:
Sporozoite
Life stage of Plasmodium infects RBC?
merozoite
life cycle of Plasmodium in RBC:
merozoite –> trophozoite –> schizont –> merozite
most deadly Plasmodium
falciparum
hepatic relapse species of Plasmodium:
vivax
ovale
banana gametocytes
P. falciparum
rosette merozoites
P. malariae
BIG red cells
Schuffner’s dots
P. ovale and vivax
forms RBC rosettes
P. falciparum
knobbs on RBC surface
bind to endothelial cells
PFEMP
Quotidian
P. falciparum
Tertian
P. vivax or ovale
Quartan
P. malariae
gold standard dx for malaria
blood smear
TONS of rings in RBC
P. falciparum
Tx for latent malaria infx:
Primaquine
Prevents FPIX –> hemozoin
keeps cell toxic for plasmodium killing
Chloroquine
Malaria drug
eye damage, blindness
chloroquine
used in chloroquine resistant P. falciparum
Quinine
Quinidine
Cardiac probs
Quinidine
Neuropsychiatric reactions
Mefloquine
Inhibits parasite e transport
Atovaquone
Inhibits parasite DHFR
proguanil
Produces free radicals to damage parasite proteins
Artemisinins
Long 1/2 life
use with artemether
Lumefantrine