Immune System Flashcards
Post-splenectomy
Howell-Jolly bodies
target cells
thrombocytosis
Positive Selection
thymus, cortex
MHC restriction
Negative Selection
thymus, medulla
non reactive to self
HLA A3
Hemochromatosis
HLA-DQ2/8
Celiac Disease
HLA-DR5
pernicious anemia/b12 def
hashimoto’s thyroidits
NK cells
induce apoptosis of virally infected and tumor cells
Th1/Th2 secretes
Th1 - ifn gamma
Th2 - IL-4,5,10,13
Th1/Th2 activates
th1 - macrophages
th2 - eosinophil, Ige production
Th1 inhibited by
IL4 and IL10
th2 inhibited by
IFN-gamma
SCID
infant, agammaglobulenima, lymphopenia
SCID cause
defective IL-2 receptor
adenosine deaminase def
X-linked
SCID treatment
BMT
Wiskott-Aldrich Syndrome
Thrombocytopenia
infections
Eczema
combined B and T cell def
cause of Wiskott-Aldrich Syndrome
X linked, WAS gene
T cells unable to reorganize actin skeleton
Ataxia-telangiectasia
cerebellar defects - ataxia
spider angiomas - telangiectasia
IgA def
increased AFP
Ataxia-telangiectasia cause
defects in ATM gene, codes for DNA repair
Hyper IgM sydrome
severe pyogenic infections early in life defective CD40L on Helper T cells/inability to class switch
Leukocyte adhesion def
recurrent bacterial infections
perstistent neutrophilia
absent pus
delayed separation of umbilical cord
Cause of Leukocyte adhesion def
defect in LFA-1 integrin on phagocytes
Chediak-Higashi syndrome
recurrent infections - catalase positive
AR
microtubule dysfunction in phagosome-lyosome fusion
Chronic Ganulomatous disease
boy
catalase + infections
Abnormal DHR flow cyto test or nitroblue tetrazoliume
catalse poisitve organisms
S aeures, E coli
Serratia
Aspergillus
Chronic Granulomatous dz causes
lack of NADPH oxidase –> decrease of ROS
X-linked agammaglobulinemia
infant boy, 4-6 months
encapsulated organism sepsis
absent B cells
cause of X linked agammaglobulinemia
X linked recessive/defect in BTK/no B cell maturation
Selegtive IgA def
asymptomatic
anaphylaxis to IgA-containing blood products
false positive B-HCG tests
CVID
young adults
recurrent sinusitis, pneumonia, bronchiectasis
splenomegaly, malignacies, GI absorption
CVID labs
decreased plasma cells
DiGeorge syndrome cause
22q deletion
failure to develop 3rd and 4th pharyngeal pouches
DiGeorge Syndrome
CHD - truncus arterosus
facial abnormalities
low Ca (PTH) and T cells
IL-12 receptor def
decreased Th1 response
disseminated mycobacterial infections
Hyper-IgE syndrome cause
neutrophils can’t respond to chemotactic stimuli
no IFN-gamma from TH1 cells
Hyper IgE syndrome
FATED: coarse facies, cold staphylcoccal absecess retained primary teeth increased IgE dermatological problems/exzema
Chronic Mucocutaneous candidias
T cell dysfunction
Cyclosporine
binds to cyclophilin
suppress organ rejection
nephrotox, HTN, hirsuitism
Tacrolimus
binds FK-binding protein
Sirolimus
inhibits mTOR
hyperlipidemia
Azathioprine
interferes with synthesis of nucleic acids
toxicity increased by allopurinol
Muromonab
binds to CD3 on T cells
prevent acute transplant rejection
Digoxin Immune Fab
antidote for dogoxin intox
Abciximab
Glycoprotein IIb/IIIa
prevent cardiac ischemia
Rituximab
CD20, B Cell non-Hodgkin’s lymphoma
Omalizumab
IgE, asthma
Adesleukin
interluekin-2
renall cell carcinoma, metastatic melnoma
epoetin alfa
erythopoietin
anemias
filgrastim
granulocyte colon-stimulating factor
recovery of bone marrow
sargramostim
granulocyte-macrophage colony stimulating factor
recovery of bone marrow
alpha interferon
hep B and C
kaposi’s sarcoma
leukemias
malignant melanoma
beta interferon
multiple sclerosis
gamma interferon
chronic granulomatous dz
oprelvekin
thrombocytopenia
thrombopoietin
thrombocytopenia
chronic transplant rejection
months/years
Class-1 MHCnon self perceived as self present a non-self antigen
febrile nonhemolytic transfusion reaction
type II hypersen
fever and chills
against HLA antigens and leukocytes
anti-U1 RNP
mixed CT dz
anti-glutamate decarboxylase
T1DM
examples of passive immunity
tetanus toxin
botulinum toxn
HBV
rabies
C1 esterase inhibitor def
hereditary angioedema
ACE inhibitors contraindictored
DAF/GPI anchored enzyme def
paroxysmal noctural hemoglobinuria
IL-1
fever
IL-2
T cells
IL-3
bone marrow
IL-4
IgE
IL-5
IgA
IL-8
neutrophils
IL-12
activates NK cells