PP Immunology Flashcards
Which cytokines do Th cell stimulate?
Everything other than IL-1
Which cytokine do macrophages stimulate?
IL-1
Which enlarged lymph nodes are most likely malignant?
Supraclavicular
Epitrochlear ( above elbow)
Inguinal
What is CD8?
T(killer) or T(suppressor) cell
Respond to MHC-1(self)
Which of your cells express MHC-1?
All except RBC and platelets
What is CD4?
Th cell
Respond to MHC-2(non-self)
What type of immunity does TH1 provide?
Cell-mediated
What type of immunity does TH2 provide?
Humoral
What do B cell deficiency patients die of?
Bacterial infection
What is Common Variable Hypogammaglobulinemia?
Kids w/ B cell that don’t differentiate into plasma cell => low Ab
What is Bruton’s Agammaglobulinemia?
Young adults w/ defective Tyrosine Kinase => no Ab
X-linked recessive ( boys)
What is Job-Buckley Syndrome?
Redheaded females
Stuck in IgE stage
What is Multiple Myeloma?
Multiple osteolytic lesion
IgG
u light chains
Rouleax
What is Heavy Chain Disease?
IgA and multiple myeloma of GI tract
What is selective IgG2 Deficiency?
Recurrent encapsulated infections
What is selective IgA deficiency?
Transfusion anaphylaxis
Mucous mm infection
What is Hairy Cell Leukemia?
Fried egg/ sunburst appearance
TRAP +
What is Ataxia Telangiectasia?
Low IgA
Neuro problems
What is hyper IgM syndrome?
High IgM
Low all other Ab
What do T cell deficiency patients die of?
Viral infection
What is DiGeorge Syndrome?
No thymus / inferior parathyroids
Low Ca
What is Chronic Mucocutaneus Candidiasis?
Te cell defect against C. albicans
Chronic infection
What is SCID?
No thymus
Frayed long bones
Baby dies by 18mo
What is Wiscott-Aldrich?
Low IgM Low platelets High IgA Eczema Petechiae
What does the CD4 count tell you?
Status of HIV (normal =1000)
What does the viral load tell you?
Progression of HIV
What organs have the most CD4 receptors?
Blood vessels Brain Testicle Cervix Rectum
What are the 3 test used to screen for HIV?
ELISA: detects IgG Ab to p24 Ag
Western blood: see >2 proteins
PCR: detects virus ( use in babies)
What is the definition of AIDS?
CD4 < 200/uL or clinical symptoms
What are the live vaccine?
“Bring Your Own Very Small Virus + MMR”
- BCG
- Yellow fever
- OPV (Sabin) = oral polio
- Varicella
- Smallpox
- rota Virus
- Measles= rubeola
- Mumps
- Rubella = German 3-day measles
What is 1 Biliary Cirrhosis?
Anti-mitochondrial Ab
Pruritis
Female
What is 1 Sclerosing Cholangitis?
p-ANCA Ab
Bile duct inflammation
Onion skinning
IBD
What is Type I Autoimmune Hepatitis?.
Anti-SM Ab
Young women
What is Type II Autoimmune Hepatitis?
Anti-LKM Ab
Kids
What is Bullous pemphigoid?
Anti-hemidesmosome Ab
Skin bullae
What is Celiac sprue?
Anti-gliaden Ab
Eating wheat => steatorrhea
What is CREST syndrome?
Anti-centomere Ab
What is Dermatitis herpetiformis?
Anti-BMZ Ab
Anti-endomysial Ab
Vesicles on anterior thigh
What is Dermatomyositis?
Anti-Jo-1 Ab Anti-GAD Ab Polyuria Polydipsia Weight loss
What is Drug-induced Lupus?
Anti-histones Ab
“HIPPPE” causes it
What is Gastritis Type A?
Anti-parietal cell Ab
Atrophic gastritis
AdenoCA
What is Goopasture’s disease?
Anti-GBM Ab
Attack lungs and kidney
RPGN
What is Graves’ disease?
Anti-TSHr Ab
Hyperthyroid
Bug eye
Pretibial myxedema
What is Guillain Barre?
Anti-ganglioside Ab
Ascending paralysis
2 w after URI
What is Hashimoto’s?
Anti-microsomal Ab = TPO
Hypothyroid
What is ITP?
Anti-platelet Ab
Anti-GP2b3a Ab
Thrombocytopenia
What is Mixed CT disease?
Anti-RNP Ab
What is Mononucleosis?
Heterophile Ab
Teenager w/ sore throat
What is MPGN Type II?
Anti-C3 convertase Ab = C3 nephritic factor
What is Multiple Sclerosis?
Anti-myelin Ab
Middle age female w/ vision problems
What is Myasthenia gravis?
Anti-AChr Ab
Female w/ potsis
Weaker as the day goes by
What is Paroxysmal hemolysis?
Donath Landosteines Ab
Bleeds when cold
What is Pemphigus vulgaris?
Anti-desmosome Ab
Sking sloughs off when touched
What is Pernicious anemia?
Anti-IF Ab
Vit B12 defi => Megaloblastic anemia
What is Polyarteritis Nodosa?
p-ANCAS Ab
Attack gut and kidney
Hep B
What is Post-strep GN?
ASO Ab
Nephritic w/ complement deposition
What is Rheumatoid Arthritis?
Rheumatoid factor
Pain worst in the morning
What is Scleroderma?
Anti-Scl70 = anti-TopoI
Fibrosis
Tight skin
What is Sjögren’s?
Anti-SSA Ab
Dry eyes “sand in eye”
Dry mouth
Arthritis
What is SLE?
Anti-ds DNA / Sm / Cardioliping, rash
What is SLE cerebritis?
Anti-neuronal Ab
Anti-ribosomal Ab
What is Vitiligo?
Anti-melanocyte Ab
White patches
What is Warm hemolysis?
Anti-Rh Ab
Bleeds at body temp
What is Wegener’s?
c-ANCA Ab
Attacks ENT
Lung
Kidney
What is HSP?
IgA disease
2 weeks after common cold => Berger’s
What is Berger’s?
IgA
2 weeks after vaccination => Serum sickness
What is Alport’s?
IgA disease
2 weeks after diarrhea => HSP, polio
Lymph node drainage of Upper limb and lateral breast?
Axillary
Lymph node drainage of the Stomach?
Celiac
Lymph node drainage of the Duodenum and jejunum?
Superior Mesenteric
Lymph node drainage of the Sigmoid colon?
Colic -> Inferior Mesenteric
Lymph node drainage of rectum?
Internal iliac
Lymph node drainage of the anal canal above the pectinate line?
Internal iliac
Lymph node drainage of the anal canal below the pectinate line?
Superficial inguinal
Lymph node drainage of the Testes?
Para-aortic
Lymph node drainage of the Scrotum?
Superficial inguinal
Lymph node drainage of the Thigh?
Superficial inguinal
Which are the capsulated Organism?
” Even Some Killers Have Pretty Nice Capsule”
- E.coli
- Strep. Pneumo
- Klebsiella
- H. Influenza
- N. meningitidis
- Cryptococcus neoformans
Which are the antigen presenting cell?
Macrophage
B cells
Dendritic cell
HLA A3 disease?
Hemochromatosis
HLA A6 disease?
Hemochromatosis
HLA B27 disease?
" PAIR" Psoriasis Ankylosing spondylitis Inflammatory bowel disease Reiter's syndrome
HLA DR3 disease?
DM Type I
Graves’ disease
HLA DR4 disease?
DM Type I
Rheumatoid arthritis
What is Follicular Dendritic cell?
Has NO MHC
Important in the MATURATION and DIVERSIFICATION of the B cells
Which are the 3 activation pathway in the Complement system?
Classical: IgG or IgM mediated [ C1]
Alternative: microbe surface molecule [ C3 ]
Lecitin: mannose or other sugar on microbial surface
Which are the complement disorder?
- C1 esterase inhibitor defi -> hereditary angioedema, increase Bradykinin
- C3 defi -> recurrente sinus and respi tract infection, increase susceptibility to Type III hypersensitivity
- C5-9 defi -> Nisseria bacteremia
- DAF defi -> complement-mediated lysis of RBCs, PNH
Which are the important IL?
IL 1 : fever IL 2 : T cell IL3 : Bone marrow ( B cells) IL 4: IgE, IgG IL5 : IgA, eosinophils IL12: induce Th1
Which are the Chemotactic Agent?
IL-8
C5a
Leukotriene B4
Which are the important Cytokines?
IL 2: T cell stimulation
IFN gama: stimulates macrophage, inhibits Th2
IL 10: inhibits T cell and macrophages ( Th1)
IL 4,5: B cell stimulation
Interferon ( IFN)?
Give the macrophages the ability to go to different places
Alpha and beta -> inhibits VIRAL protein synthesis
Gamma -> increase MHC I and II expression and antigen presentation in all cells
Which are the inactivated or killed vaccine?
Cholera Hep A Polio ( injected) Rabies IM influenza
What type of reaction induce the vaccine?
Live vaccine -> cell mediated { T cell }
Killed vaccine -> humoral mediated { B cell }
Type of Hypersensitivity?
“ACID”
- Anaphylactic and Atopic (Type I)
- Cytotoxic ( Type II): antibody mediated
- Immune complex ( Type III): antibody against soluble antigen
- Delayed ( Type IV): T cell mediated
Type II hypersensitivity disorder?
Autoimmune hemolytic anemia Pernicious anemia Idiopathic thrombocytopenia purpura Erythroblastosis fetalis Acute hemolytic transfusion reaction Rheumatic fever Good pastures syndrome Bullous pemphigoid Pemphigus vulgaris
Type III hypersensitivity disorder?
SLE Polyarteritis Nodosa Poststreptococcal glomerulonephritis Serum sickness Arthus reaction
Type IV hypersensitivity disorder?
Multiple sclerosis Guillain-Barré syndrome Graft vs host disease PPd Contact dermatitis
Which are the B cell disorder?
Bruton’s ( X-linked agammaglobulinemia)
Selective IgA deficiency
Common variable immunodeficiency
Which are the T cell disorder?
DiGorge syndrome
IL-12 receptor deficiency
Hyper-IgE syndrome ( Job’s syndrome)
Chronic Mucocutaneus Candisiasis
Which are the B and T cell disorder?
SCID ( severe combined immunodeficiency ) { adenosine deaminase deficiency}
Ataxia-telangiectasia
Hyper-IgM syndrome
Wiskott-Aldrich syndrome
Which are the X-linked immune deficiency?
“WACH”
- Wiskott-Aldrich
- Bruton’s
- SCID, CGD
- Hyper IgM
Which are the phagocyte dysfunction?
Leukocyte adhesion deficiency
Chediak-Higashi syndrome
CGD
Type of Transplant rejection?
Hyperacute -> minutes, antibody mediated, preformed anti-donor antibodies
Acute -> weeks, cell mediated due to CTLs reacting against foreign MHCs
Chronic -> month to years, irreversible
Graf vs host
Which are the immunosuppressants?
Cyclosporine Tacrolimus ( FK-506) Sirolimus ( rapamycin) Azathioprine Muromonab-CD3 (OKT3)
Cyclosporine?
- Binds to cyclophilins.Complex blocks the differentiation and activation of T cells by inhibiting Calcineurin, thus preventing the production of IL-2 and its receptors.
- Supresses organ rejection
- causes Nephrotoxicity
Tacrolimus ( FK-506)?
- Binds to FK-binding protein, inhibiting calcinerium and secretion of IL-2.
- immunosuppressive used in organ transplant recipients
- causes: Neurotoxicity and Nephrotoxicity
Sirolimus (rapamycin)?
- Inhibits mTOR. Inhibits T cell proliferation
- Immunosuppression after kidney transplantation
- causes: Hyperlipidemia, Trombocytopenia and Leukopenia
Azathioprine?
- Precursor of 6-mercaptopurine that interfers with the metabolism and synthesis of nucleic acids.
- Use in kidney transplant
- causes: Bone marrow suppression
Muromonab-CD3 (OKT3)?
- Antybody that binds to CD3 on surface of T cells. Blocks cellular interaction with CD3 protein responsible for T cell signal transduction
- Immunosuppressant after kidney transplant
- causes: Cytokine release syndrome