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Severe neutropenia shows up with which infections?

skin infections, stomatitis


otitis media






Differential for neutropenia?

1. Virus or Medications


2. Splenomegaly!!


3. Schwachman-Diamond


4. Cartilage-Hair Hypoplasia


5. Lysosomal disease (Chediak-Higashi LYST, Griselli RAB27a, & Hemansky-Pudlak ADTB3a)


6. WHIM CXCR4




Cyclic neutropenia (ELA4 mutation, mono reverse),


Chronic Benign Neutropen (200-1500), mild inf


Neonatal Isoimmune Neut (NIN), like RH


Kostmann HAX (Familial Severe Neut), AR


AutoImmune Neutropenia of Infancy


Autoimmune LymphoProliferative Syndrome (ALPS):



- clinical symptom


- underlying issue


- labs would show



-sx: cytopenia with fevers


-Issue: failure of Fas-L (CD178) to induce lymphocyte apoptosis. Lymphs multiple and can suppress other cell lines (low RBC, neutrophils, plt)


- Labs: increased double negative alpha/beta T cells (CD3+, CD4-, CD8-), increased Vit B12

You reach double negative degrees in the ALPs and need vitamin B, Fast!! Otherwise you get cytopenias with fever!

Name some chromosomal breakage syndromes.

Chromosomal breakage (FYI: photosensitive):


1. Ataxia telangiectasia (cytopenia with fever)


2. Nijmegen (similar to A-T)


3. Bloom's syndrome (short, photosens, unusual face)


4. Fanconi anemia


5. * hypothyroidism


What is Chediak Higashi syndrome?




How is Griselli different?

AR mutation in CHS (aka LYST) gene


Affect lysosomal trafficking regulator protein, which leads to a decrease in phagocytosis.





clinical picture: CH ANNN


- albinism


- NK cell phagocytosis prob


- neutropenia possible


- neuropathy




In CH, you see giant azurophilic granules that lack proteins. In Griselli RAB27a, you don't.


HAE treatment(s) that block kallikrein?




Brands?

C1 inhibitor (chronic Cinryze, acute Berinert, recombinant Ruconest)


ecallantide (Kalbitor)






HAE treatment that blocks bradykinin B2 receptor?




Brand?

Icatibant (Firazyr)


What chemokine is in follicular zones? Receptor?

CxCR5 bind CxCL13 in follicular zone


Most potent chemoattractsnt for neutrophils and it receptor?

Neutrophil CXCR2 binds IL-8 (CXCL-8)

Neutrophil X2 is IL8erate (illiterate)

WHIM syndrome stand for?


Mutation? Ligand?


Inheritance?

Warts, Hypogam, Inf, Myelokathexis.


gof CXCR4 mutation - binds CXCL12


Autosomal Dominant


Also get neutropenia





Neutr CxCR2 : CXCL8 (IL-8)


WHIM CxCR4 : CxCL12, (FYI, CXCR4 is also on HIV)


CxCR5 : CxCL13 Follicular


The venom of this particular flying hymenoptera is standardized for the content of what protein?
This VIT is standardized for?



Action?




Med that can block?

Phospholipase A2 (Api m 1 in honey bee)


-Note: note x-reactive with vespid PLA1




PLA2 produces arachidonic acid from phospholipids. Blocked by glucocorticoids.


In this disease, there is a biphasic increase and decrease of CD1a+ Langerhans DCs in the epidermis.

Norwegian Scabies


What is metachromasia, and which immune cells are defined by it?

Color change different from stain.


Mast cells and basophils


What is the only X–linked complement component deficiency?
Properdin deficiency

What is the name for mountain cedar allergen?
Jun a ___ (Juniperus ashei)

Most common allergen induced immediate hypersensitivity in the Mediterrean?
Par j 1
(Parietaria judaica,
sticky weed)

Is there cross–reactivity between cockroaches?



Which cockroach allergen is related to animal danders?

Yes, but only between Bla g 1 and Per a 1



Bla g 4 (lipocalin–like protein)


Allergen common btw cockroach, mites and shrimp?
Tropomyosin:



Per a 7 (cockroach)


Pen a 1 (shrimp)


Der f/p 10 (DM)



perpender

What is the most common cause of HP in Mexico?
Pigeon breeders disease

EGPA (Churg–Strauss):


1. stands for?


2. six ACR criteria for diagnosis?


3. definite diagnosis?

1. Eosinophilic Granulomatosis with PolyAngitis


2. Eos>1500, Extravas eos


Neuropathy,


Paranasal sinus abnormalities, Pulmonary (migratory) infiltrates,


Asthma




3. DX: eosinophilic vasculitis on lung biopsy



Think ENPA EE/N/PP/A

Neutrophils

1. Growth factors


2. cytokine that stimulate PMN?


3. cell products & unique protein

GM–CSF, G–CSF

IL-8 (CXCL8)




LTB4


cathepsin G (unique to neutrophils)


Monocytes/Macrophage



1. Growth factor?


2. maturation site?


3. cell products?



1. GM–CSF

2. Mature in BM, but diff into macrophages and DC in tissues


3. LTB4, LTC4


Eosinophils:


1. Growth factors?


2. maturation site?

1. IL–5, IL–3, GM–CSF


2. bone marrow


Cell products of eosinophils in:

1. Primary


2. Secondary granules


3. Lipid bodies


(Which can selectively release products)?

1. Charcot leyden cystal (lysophospholipase)

2. Cationic proteins (MBP, ECP, EDN, EPO),


Enzymes (lysozyme, elastase, cathepsin),


Cytokines


3. COX, LPO, LT




Secondary can selectively release granules.


Basophils:


1. Growth factor? & receptor?


2. Maturation site


3. cell products?

1. IL–3 (rec is CD123 denim, also found on plasmacytoid DC)


IL–4, IL–5, GM–CSF, nerve growth factor (NGF)


2. bone marrow


3. histamine, chondroitin A, LTC4

Ill Mark received by CD denim on basophils and plasmacytoid DCs

Mast cells:


1. Growth factor


2. Maturation site & granule types MCt vs MCtc



1. Stem Cell Factor (aka c–kit ligand)


2. MCt: gut, lung (scroll-like granules)


MCtc: gut, skin/eyes, vessels, synovium (lattice/whorled granules). Also has C5a Receptor (CD88).




Recall, C5a is a powerful chemotactic factor for neutrophils.




HCL TPH + CCC

Mast cell

1. Pre-formed mediators?


2. Other Cell products MCt vs MCtc

1. Pre-formed:

- histamine,


- proteases (tryptase, c/c/c)


- proteoglycans (hep, chon)


- TNF-alpha





2. both MCt/MCtc: (histamine, chondroitin A/E, LTC4),


tryptase, PGD2, heparin, IL-5




MCtc: chymase, carboxypeptidase, cathepsin G


agent responsible for Enzyme/Detergent Worker’s Lung
Bacillus subtilis enzymes (HMW, IgE-mediated)

This is the most common parasite causing Loffler’s syndrome
Ascaris lumbricoides

Solenopsis invicta and Solenopsis richteri do NOT share which antigen?




Their venom contain 95% what?

Sol i 4 is unique.




piperidine alkaloids


Name the genus of the insect inhabiting this nest

genus?




names of related genuses?




Most important venom antigen?


US allergen standardized to?

DolichoVespula ( hornet, horns blow air)




Vespula (jackets) lay on the ground (ground nests)


Polistes (paper wasp)




Antigen 5 (ves v 5) is the major allergen, but extracts are standardized to hyaluronidase (ves v 2, api m 2, pol a 2)


Ataxia–Telangiectasia:

1. first clinical manifestation?


2. characteristic labs & Ig?


3. underlying problem

1. Ataxia (walking then prog clumsy)

2. Elevated AFP, CEA, IgM (low IgA & IgE)


3. ATM is PI3 kinase, responsible for DNA repair




7 month old girl got pneumonoccal Meningitis despite her PCV-13 vaccine.


Most likely has deficiency in:


TRIF, MyD88, NEMO, or UNC93b???

Answer is MyD88


NEMO is Xlinked.


TRIF & UNC93b has HSV encephalitis.


DDX for chronic mucocutaneous candidiasis?

DOCK8 HIES


AIRE


MHC II defects


STAT1 gain of function


STAT3 / TH17 / IL-17 / Dectin/CARD9



yeasty DAMSSdc

MSMD (Mendelian Susc to Mycobactium Disease)


1. kind of infections


2. mutations involved

1. MLVSH mycobacterium (disseminated), salmonella, listeria


histoplasma/cocci,


viruses (herpes family, RSV)





MC: IL-12Rb-1 deficiency,


osteomyelitis: IFN deficiency


E. Asian women: IFN auto ab


STAT1 gof/defic,


Tyk 2 HIES,


GATA2 MonoMac, low NK bright


XL-NEMO




Recall, IL-12/23 blocker is ustekinumab.

mycobacterium STIIIG X

Abscesses and post-pneumonia formation of pneumatoceles leading to Aspergillus, Primary teeth retention, Classic facies > 16 yo. Other: eczema, mucocutaneous candidiasis (not STAT1 gof or AIRE). Dx?

Job/STAT3 deficiency






Post-PNA pneumatocele also in myeloperoxidase deficiency


How is hypereosinophilia defined?


HES?

Peripheral eo >1500/mcl on 2 occasions,


OR tissue eo + marked peripheral eos.


(% is NOT useful)


HES is when there is end-organ damage 2/2 eosinophilia.




Hypereosinophilia + interstitial nephritis: which meds most likely culprit?

cephalosporins and PCNs




recall, cefaclor serum sick kids


recall, PIE lung = NSAIDs, nitro


Infectious causes of eosinophilia?

1. Parasites


2. Fungus


3. Insect (scabies sensitization)


4. protozoa: only Isospora belli & Sarcocystis


What is Gleich syndrome?

Episodic Angioedema with episodic Eosinophilia (EAE)


DDX (2) for T-B-NK- SCID?

ADA deficiency (bone anomalies)


& RD (Reticular Dysgenesis)




PNP is also T-B- but can be NK+/-


DDX (6) for T-B- (NK ok) SCID?

1. RAG1&2 (NO radiation sens!)


2. recombinase repair issues:


- Artemis, Cernunnos, Ligase 4 (radiation sensitive)


3. Nijmegen breakage


4. Omenn!!!


5. PNP, which can also be NK+/-

Think VDJ defects.

DDX (2) for T-NK- (B ok) SCID?

XL: Common gamma chain (CD 132 demon)


AR: JAK3 deficiency




Recall: CD131 timid is common beta chain




Underlying problem in Chronic Granulomatous Disease (CGD)?




Inheritance?


Describe DHR lab


sx & Infections? Why?

Neutrophils can't do NADPH-oxidative burst.




65% XL, but rest are AR




DHR: peak don't move (XL dz), 2 sharp peaks (XL carrier), small hill (AR)




Angry bloody diarrhea like IL-10 & NEMO.


Catalase (+) breaks down bacteria H202 so CGD can't borrow.


N BBASSS cfg


- Nocardia


- Burkholderia cepacia


- BCG,


- Aspergillus


- Staph aureus


- Serratia marcenans


- Salmonella


Other:


- Chromobacterium


- Francisella


- Granulibacter




Describe MHC Class 1 vs 2 presentation & cross-presentation.

MHC 1 (HLA ABC): intracell protein --> TAP to MHC 1 inside ER and export by Golgi/phagosome.


MHC 2 (HLA DQ,DR,DS): extracell phagocytosis --> merge with MHC2 and export by Golgi/phagosome


Cross: endosome fuse with MHC1 on Golgi/phagosome; important for extracellular viruses and tumors

TAP "in" 1ABC (HLA ABC)




"ex" 2Dqrs (HLA Dq,Dr,Ds)




Cross: "ex" 1

DDX for HIES (hyperIgE syndrome)

AD: Job/Stat3 deficiency


AR: DOCK8, Tyk2, Wiscott-Aldrich, Omenn


Name 5 syndromic immunodeficiencies

Job STAT3 deficiency


Wiscott-Aldrich


Ataxia Telangiectasia


DiGeorge (+/- immunodefic)


STAT5b (IPEX-like with Treg issues)


CD defects in LAD?


Sx and blood group?


Why infections?

LAD1: CD18 (pairs with CD11 to form integrins). Think chronic necrotic lesions mos/yrs (recall D-ADA2 also has necrotic lesions).


LAD2: FUCT cannot fucosylate CD15 (sialyl lewis x)...has Bombay blood group & developmental abnormalities.





Neutrophils problem! PMN can't extravasculize from blood vessels.


Immunodeficiency with dwarfism?




STAT5b (IPEX-like with Treg issues)





Causes of agammaglobulinemia?

1. XL BTK (phos PLCγ2)


2. μ (IgM) Heavy chain


3. CD79 (Igα, Igβ)


4. CD159 (Surrogate light chain: V pre-B, lambda 5),


5. BLNK (SLP–65) deficiency


6. Good thymoma w/ eosinopenia


7. Other: LRRC8, PIK3r1, TCF3, monosomy 7, trisomy 8)


Infections with antibody/humoral deficiency

1. sinopulmonary inf by encapsulated bacteria


2. atypical: mycoplasma, ureaplasma


3. GI tract bacteria/virus/protozoa (Giardia)


How to dx CVID?

1. <2 SD for IgG and (IgA or IgM)


2. Absent isohemaglutinins


3. "poor" vaccine response to protein & polysaccharide


4. exclude other causes


DDX for CVID hypogam?

ICOS, TACI, BAFF (TNFRSF13c), CD19/20/21, CD81(TAPA-1),




Other: TWEAK, PIK3CD (PI3 kinase), PIK3R1, LRBA, NFkB2, PRKCD, KMT2D (Kabuki), Good thymoma w/ eosinopenia


other DDx for hypogam besides CVID (i.e. selective Ig deficiency)?

WHIM


PLAID




Medications, infection, protein loss, BM failure / cancer


Cutoff for selective IgA deficiency?


Which meds may lead to permanent deficiency as well?

<7 mg/dl (in 4 year old or older)




Anti-epileptics


For lab lymph proliferation, how many days for mitogen vs. antigen?

mitogen: 3 days


antigen: 6 days


Clinical lab significance of CD107a?

look for this intracellular marker to be expressed extracellularly as a marker of CYTOTOXICITY!


BTK is expressed inside which cells?

B cells, monocytes, platelets


Define lymphopenia generally?


About how much should be T cells, B cells, and NK cells?

ALC < 1000/m3 (adults)


ALC < 3000/m3 (infants)




T cells is 65-76% of ALC


NK: 10-15%


B: 10-15%


Prevnar vs Pneumovax

Prevnar 13 is conjugated with peptide.




Pneumovax 23 has just the carbohydrate capsule.


Which tryptase is released from mast cells constitutively?


VS during degranulation?



constitutive: Pro-alpha and pro-beta monomers tryptase




degranulation: Mature tryptase (beta tetramers)




Total tryptase = monomers + beta tetramer


-mab nomenclature:




target? + source?

target:


-li- or -lim- (immune)


-tu- or -tum- (tumor)




source:


-amab (rat)


-emab (hemster)


-imab (primate)


-omab (mouse)


-umab (human)


-zumab (humanized)


-ximab (chimera)




IVIG:


- target trough?


- when to check trough?


- side effects on?

>500-750 mg/dl to keep serious infections <2.5 yr; (Higher if bronchiectasis!)




after 2-3 infusions to get "accurate" level




on: headache,


off: fatigue before next infusion


(AD) PLAID: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

PLc-gamma-2 Antibody defic + Immune Dysregulation


1. PLC-gamma 2 mutation, causing diminished signalling at cold temp. (recall, PIP2->DAG/IP3


2. cold urticaria with evaporative cooling, antibody deficiency, autoimmunity


3. high dose antihistamines +/- IVIG replacement


(AD) CAPS: Stands for?


1. Underlying prob?


2. Clinical sx with each type?


3. Tx?

CIAS1-Associated Periodic Syndrome


1. CIAS1/NLRP3 (AD) activating mutation of cryopyrin


2. All have Fever + urticaria-like (Neutrophilic, not Eos)


- FCAS (AD): sx with generalized cold exposure


- MW: limb pain, hearing, systemic amyloidosis


- NOMID/CINCA: arthritis, meningitis, epiphyseal overgrowth


3. IL-1 blocker




(AD) PAPA: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

Pyogenic Arthritis + Pyoderma Gangrenosa + Acne


1. PSTPIP1 (AD), aka CD2 bind protein 1, which (+) pyrin


2. (see above) terrible


3. no good tx. ???TNF or IL-1 blockers, steroids


FMF: Stands for?


1. Mutation? Underlying prob?


2. Clinical sx?


3. Tx?



Familial Mediterranean Fever


- MEFV (AR), codes for pyrin


- 1-3 days fever, peritonitis (sterile), +/- pleurisy, arthritis/algia, erypsipelas, rare amyloidosis


- tx: colchicine (blocks pyrin activation), IL-1 rec inhibitor anakinra






PFAPA: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

Periodic Fever with Aphthous ulcers, Pharyngitis, and Adenitis


- ?genetic basis


- last 3-6 days, very clockwork


- tx options: outgrow, T&A, steroids (though will make sx more frequent), anakinra




HIDS: Stands for?


1. Underlying prob?


2. Clinical sx? Trigger?


3. Population


4. Tx?



HyperIgD with Periodic Fever Syndrome


2. MVK (AR) mutation, decrease geranylP somehow lead to increased IL-1 and IgD (not sig)


2. 3-7 days F, abd pain, arthritis/algia, cervical LAD, aphthous ulcers. Vaccines can trigger.


3. Northern Europeans


4. ? IL-1 rec inhibitor anakinra in more severe cases



(AD) TRAPS: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

TNF-Rec Assoc Periodic Syndrome


1. TNFRSF1A gene (AD!) - cysteine misfold of TNF rec


2. weeks of fever, serositis, arthritis, migratory rash, periorbital edema (also in CANDLE), renal amyloidosis


3. NSAIDs, corticosteroids, etanercept (but note TNF-mab may worsen!), IL-1 rec inhibitor anakinra


Think sx are TRAPPED for weeks!

DIRA: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

Defic of IL-1 Rec Antagonist (anakinra)


1. basically anakinra deficiency


2. looks like NOMID with BONE issues (osteomyelitis, periosteitis), skin pustulosis


3. IL-1 rec inhibitor anakinra


CANDLE: Stands for?


1. Underlying prob?


2. Clinical sx?


3. Tx?

Chronic Atypical Neutrophilic Dermatosis with Lipodystrophy and Elevated temp


1. inactivating mutation of proteosome, leading to IFN type 1 production!


2. violet periorbital edema (also in TRAPS), lipodystrophy, panniculitis, FTT, synovitis


3. ?JAK kinase inhibitor (?tofacitunib)






Recall, Bortezomib also (-) proteosome


DADA2: Stands for?


1. mutation? of course ADA2 def


2. Clinical sx?


3. Tx?

Deficiency of ADA2


1. CECR1 (AR) mutation, leading to ADA2 deficiency


2. fevers, lacunar strokes!, livedo rash, necrotic lesions (recall also in LAD1), polyarthritis nodosa, mild (usu IgM) deficiency


3. TNF blockers


Decreased immune system is a/w of which vitamins and minerals?

Vit A (NK), Vit C, iron, zinc, selenium


Invariant chain:


Loaded on which MHC _?_ in which cellular compartment

MCH II


in the ER (endoplasmic reticulum)


NKT cells are best described as:


a. MHC I restricted


b. CD1d restricted


c. Very small lymphocytes



b. NKT cells are large lymphocytes that recognized both CD1d and MHC1 (KIR rec). However, NKT are CD1d restricted and MHC 1 nonrestricted.




CD1 present lipids.


Gut ILC perform which?


a. secrete mucus


b. repress PMN phagocytosis


c. recruit macrophages


d. induce defensing



d. GUT ILC helps maintain gut integrity by inducing enterocyte secretion of mucus and antimicrobial peptides.


Which of the following is on all B cells but disappear when becoming plasma cells?


a. IgD


b. IgM


c. CD19


d. CD20


e. CD21

answer: c. CD19


Which joins first in forming Ig?


a. DH-->JH


b. VH-->DH


c. Vk -->Jk


d. Vl --> Jl

answer:


a. DH-->JH (DJ of Heavy chain)


Describe Pro-B cell VS Pre-B cell VS immature B-cell?

Pro-B: has CD19 and CD10


Pre-B: gains Ig(mu) (no lt chain)


Immature: Ig(mu)+light chain = IgM


Which process unique to B cells allows them to enhance the specificity and affinity of their antigen receptors?


a. Allelic inclusion


b. class switching


b. receptor editing


d. somatic hypermutation


e. telomerase activation

answer:


d. somatic hypermutation (AID/UNG, in dark zone of germinal center)




allelic inclusion: only Ig(mu) for 1 allele (mom or dad) can be expressed




Which of the following is NOT involved in forming IgM?


a. AID


b. kappa light chain


c. RAG 1/2


d. surrogate light chain


e. TdT

answer:


a. AID leads to somatic hypermutation, which helps the affinity maturation (V arm) as well as class switching (H arm) in dark zone of germinal center




Causes of hyperIgM?


Inheritance?


Which causes opportunistic infections (i.e. PCP)?



Opportunistic infections (think T-cell licensing):


XL: CD40L (CD154) deficiency



AR: CD40,




No opportunistic infections:


AR: AID, UNG deficiency




Other:


Schnitzler's urticaria (later in life),


Ataxia Telangiectasia,


Waldenstrom's Macroglob






Functions of AID & UNG?




Do they function in the bone marrow?

Mutations in:


AID deaminates C (Cytosine) to U (uracil).


UNG removes the U, leaving empty spot to add any nucleotide!




No, they happen in the periphery in dark zone of germinal center, helping with B cell class switch and affinity maturation.


What is "junctional diversity" and which protein is involved?



Junctional diversity: DNA variability due to TdT (terminal deoxynuleotidyl transferase) randomly adding nucleotides during the V(D)J recombination.


What does "alternative splicing" allow for B cells?

Allows for IgM to be membrane-bound or soluble.


How does Bortezomib work?




Which cells does it preferentially affect?




Side effect?

Blocks proteosome, so cells can destroy bad proteins and gets choked up, undergoing autophagy and apoptosis.


(Recall CANDLE = proteosome issue)




Affects plasma cells.




Neuropathy (30%), low neutrophils/platelets, Shingles herpes zoster


Immunodeficiency with enteropathy/ watery diarrhea?




Angry inflammatory bowel and bloody diarrhea?

watery: CVID, IPEX, CTLA-4 (CD 152 talon)




angry: IL-10R deficiency, CGD, NEMO


Pemphigus vulgaris:


ethnic group?


drugs?


describe.

Jews, Mediterranean


-thiol (captopril, penicillamine)




Vulgar language (oral mouth blisters)


They are also despos (DesPo - DesMo - Antibodies against desmoglein 1[skin] or


desmoglein 3[muc memb])


Vulgar people are shallow and superficial (Superficial flaccid blisters above the basal layer, and will rupture easily. (Nikolsky's sign positive)


They are trapped in their own net. (Net-like IgG on immunoflorescence)


And die. (Patients die without treatment, poor prognosis)


And have tombstones on their graves. (Tombstone appearance of basal layer)






Bullous pemphigoid, main antigen?

BP Ag2 (causes blisters)

BP Ag1


what is entopy?

local production of IgE


are nasal steroids helpful in pregnancy-induced rhinitis?

no


What causes ANTERIOR vs POSTERIOR subcapsular cataracts?

anterior: AKC: atopic keratoconj




posterior: corticosteroids


Which eye disease cause upper eyelid papillae?

VKC (teens, photophobia, perilimbal dots) larger tarsal hypertrophy than GPC (contact lenses)


sight-threatening eye conditions and differences?




other?

VKC: vernal keratoconj --> boys, cobblestoning papillae, Horner-Trantas peri-limbal dots, severe photophobia, upper lid papille




AKC: atopic keratoconj --> teens to adults, itching, anterior cataracts, lower lid papillae, a/w atopic dermatitis




acute glaucoma


scleritis


iritis


uveitis


Herpes simplex keratitis


Contact lenses can cause which conjunctivitis?

GPC: giant papillary conj






In asthma, which IL causes increased mucus production?

IL-9, which also helps IL-4 mediated IgE class switching.


What is in asthmatic sputum?

a. Curshmann's spirals (excess mucus production)


b. Creola bodies (clumps of epithelial cells)


c. Charcot-Leyden crystals of eosinophilic proteins


Sensitization to which mold is a/w persistent asthma?

sensitization to Alternaria


What does the Asthma Predictive Index API predict?




Criteria?

Children < 3y/o with 4+ wheezing episodes in the past year, is likely to have persistent wheezing if:




One of:


- Parent asthma


- physician diagnosed AD


- aeroallergen sensitzation




AND 2 of:


- food sensitization


- >4% eosinophils


- wheezing apart from colds

API 1+2

NHLBI 2007 cutoffs for persistent (mild vs. severe) asthma for child 4 y/o vs 5 y/o in regards to monthly nighttime symptoms?



Mild persistent night sx:


4 y/o: 1/mo


5 y/o, 3/mo




Severe persistent night sx:


4 y/o: 1/wk


5 y/o: 1/night








NHLBI, for 5 y/o, what is difference for monthly nighttime symptoms for assess SEVERITY vs CONTROL?

For initial severity, >3/month is mild persistent, often nightly is severe persistent. (vs 4 y/o, where >1/month is persistent)




For control, 2/month is uncontrolled. (2/week is severe)




ACT score for uncontrolled vs severely uncontrolled?

ACT 16-19 is uncontrolled, 15 or less is severely uncontrolled


Of the 6 steps for asthma treatment:


1. which step is low dose vs high dose ICS vs oral steroids?


2. what additional tx can you consider for step 2 in kids 5 year and older?

1. Low dose ICS (step 2), high dose (step 5), oral steroids (step 6)


2. In kids 5 and older, you can consider SCIT or theophylline.


What is Frey's syndrome? aka?

aka auriculotemporal syndrome




face flush/sweat with flamey (spicy), flavored food


Egg is in which:


1. vaccines?


2. sedative?

Yellow fever vaccine


Rabies vaccine


(influenza)




Propofol

Yellow Rabies Egg

Oral Allergy syndrome is a/w:


1. which peanut component?


2. which soy component? (tree?)

peanut ara h 8


gly m 3 & 4 (birch pollen)


which soy component is a/w asthma?

gly m 1 & 2


What is another name for milk protein intolerance in babies with bloody stools?

FPIP (Food Protein Induced Proctocolitis)


What is Heiner's hypersensitivity?

milk hypersensitivity in kids, causing PNAs, IDA, FTT


Which foods are a/w exercise-induced anaphylaxis?

Celery


Wheat (omega 5 gliadin)


Shellfish / Fish


Fruit


Milk


Ragweed patients get oral allergy syndrome to what?
Which foods has oral allergy to this pollen?


The gourd family: honeydew, watermelon, cantaloupe, zucchini, and cucumber
Ragweed:



Bananas & Gourd family (honeydew, watermelon, cantaloupe, zucchini, and cucumber)


Mugwort has oral allergy to which foods

celery & spices (like birch)


broccoli family


garlic/onion


bell/black pepper

think celery-mugwort-spice syndrome

Birch pollen (looks like tri-nipples) is related to which foods?

Birch (betula)




celery and spices (like mugwort)


fruits


soy (gly m 3/4),


PN (ara h 8)


hazelnut


Which cytokines / receptors are a/w hypotension during anaphylaxis?

Tryptase


Histamine


C3a


IL-6


TNF receptor 1

What may serum Total:Mature tryptase ratio >20 vs <10 suggest?

>20 means Systemic Mastocytosis




<10 other causes (i.e. acute anaphylaxis)




Note: beta tryptase not elevated in food-induced anaphylaxis (but may see 1.2x +2).


What contaminant in heparin may cause an anaphylactic picture without skin symptoms?

chondroitin sulfate


Specific latex allergen a/w:


1. spina bifida


2. health care workers


3. foods

1. hev b 1,3


2. hev b 6,5,7




3.


hev b 2: BO bell pepper, olives


hev b 6: BAC banana, avocado, chestnut


hev b 5: K kiwi


hev b 7: PT potato, tomato


hev b 13: P potato


Venom IT is indicated for who?




When to continue VIT forever?

Anyone with associated anaphylaxis




>16 y/o with systemic cutaneous (hives or angioedema)




SEVERE reaction,


systemic rxn on VIT,


honeybee allergy


?if skin or sIgE don't decrease


Schnitzler syndrome


symptoms? when in life?


labs?


tx?

autoinflammatory dz presents later in life with:


- non-pruritc neutrophilic urticaria


- periodic fevers


- arthraglia




a/w elevated IgM!




tx with anti-IL-1 (anakinra)


What is emphysema, types, and causes?

Emphysema is loss of elastic tissue in terminal airspaces.




Centrilobular (proximal acinar): upper lobes, cigarettes


Panlobular (panacinar): lower lobs, A1AT deficiency


Paraseptal (distal acinar): periphery, spontaneous PTX in young adult


HAT vs HDACs

HAT (Histone AcetylTransferase) is INFLAMMATORY by unwinding DNA to express NFkB and AP-1.




HDACs (Histone DeACetylases) is recruited by Corticosteroids and does the opposite, hence anti-inflamm.


What is the difference between phototoxic and photoallergic?




Name some causative agents.

Toxic (no prior sens):

foods (lime, celery, parsnip),

tar,

psoralens, furocoumarins,

tetracyclines,sulfonamines,

quinine (parasite)

amiodarone,

Allergic (requires prior sens):

chlorhexidine,

PABA,

thiourea,

sulfonylureas (T2DM)

dapsone,

quinidine(rhythm),

Both:

NSAIDs

diuretics




Test for nickel contact dermatitis?

DiMethylGlyoxime test (pink = positive)

Nicole goes to DMG to test Nickel.


Pink = passing positive

Contact derm


Where are chromates found?

leather and wet cement


Contact derm
Where is cobalt found?

Contact derm


Where is cobalt found?

in dental implants and artificial joints, also engines/rockets

in dental implants and artificial joints, also engines/rockets




recall: acrylates in dental & adhesive for occupational asthma

Kobe Bryant has cobalt teeth and rocket engines.

Contact derm
What is myroxylon pereirae? what is it found in?

Contact derm


What is myroxylon pereirae? what is it found in?

Balsam of Peru




perfumes


cinnamon and vanilla


most common cause of hand eczema in flower workers?

AlstroEmeria (Peruvian lily)

AlstroEmeria (Peruvian lily)


Sensitizing substances for most plants are mostly found in which fractions?

oily oleoresin, but some in water-soluble glucosides.


Preservatives are classified into which 2 main groups?




Name some examples of the releasers.

Formaldehyde releasers:


Quaternium-15,


BNP (bromo-nitro-propane)


DMDM hydantoin,


-Linidinyl urea,


QLHB






Non-donors:


benzalkonium,


methylisothiazolinone,


para-ben,


phenoxy-ethanol,


PCMX/PCMC,


thimerosol


What contact dermatitis agents are in hair products?

cocamidopropyl betaine


glycerol thiolycolate


paraPhenyleneDiamine - think hair dressers & henna tattoo




(recall persulfate for occupational asthma)





Hair: cocoa butter, glycerin sugar,


Hair/henna: parafin wax




purposeful hair bleach

What contact derm agents are in nail products?

Acrylates (i.e. ethylacrylate)


What is the main substance causing Toxidendron dermatitis?


There is cross-reactive to which fruit peels?

UruShiol




mango peels


Name 2 physical (non-chemical) sunblocking agents

Titanium dioxide, zinc oxide


Which steroids are use to patch test?




Name the 4 classes of steroids.

A: hydrocort (test tixocortol)


B: triam (test budesonide)


C: betametasone


D: hydrocort-17-butyrate


What contact derm agent is common in topical creams?

EthyleneDiamine

Think Ethyl's skin cream




Paraphen for her hair

What rash can sometimes precede HAE attacks?




In what other conditions can you see it?

erythema marginatum, also in RA


HAE treatments:


1. acute PRN?


2. prophylaxis for life?


3. before procedures?


4. for pregnancy?

1. C1 (Berinert, Ruconest) ecallantide, icatibant


2. Cinryze, androgens, FFP (chronic and forever)


3. Berinert, androgens (before anesthesia)


4. plasma-derived C1 inh (Cinryze, Berinert)


ddx for T- SCID?

CD3 (e,d,g,e)


CD45


CD25 nail (IL-2Ra), also IPEX-like


CD127 tunic (IL-7Ra, also rec for TSLP)





Think TCR & T cells!

ddx for Bare Lymph Syndrome, CD8 vs CD4 lymphopenia?

CD8: deficiency of ZAP70, TAP, tapasin,




CD4: mutations (MHC2, RFX5, FRXAP, FRXANK), UNG119 & LCk deficiency, HIV inf, XLP

8 zap tap tap




4 bare HIV lyck their X-lip

XLP-1


mutation? which encodes?




function of that protein?

XLP-1: SH2-D1a mutation, encoding SAP




SAP links SLAM (with its ITSM) to Fyn/CD3




SAP = SLAM-Associated Protein


SLAM = Signaling lymph activation molecule


Immunodeficiency with severe IBD?

deficiency of IL-10




recall, severe diarrhea also in CGD & NEMO


watery: CVID, IPEX, CTLA4 (CD 152 talon)


Name some live vaccines

Adenovirus




Nasal Influenza, MMR, Varicella/Zoster, Yellow Fever, oral Polio, Rotavirus, BCG, Typhoid, Vaccinia (smallpox),


What virus is contraindicated with intussussception?

Rotavirus


Persons with isolated B cell immunodeficiency may receive which vaccine?

varicella


Gelatin is in which vaccines

Hep B,


influenza,


MMRV,


Varicella/HZ,


Yellow Fever



Jello HIMVY

Neomycin is in which vaccines

MMR, varicella/VZ, Polio

Neo Polo MV

Egg allergy & vaccines: guidelines?

If hives, PCP give vaccine, watch 30 minute




If systemic rxn, give Flublock (RIV3) if adult, otherwise allergist give and wait 30 min.


Name the IL-12/IL-23 blocker that can be used for psoriasis

ustekinumab




watch out for mycobacterium inf


recall, IL-12 deficiency = MSMD


PDE-4 blocker for psoriasis?


PDE-4 blocker for COPD? SE




Benefits

psoriasis: Apremilast


COPD: Roflumilast, GI side effects (n, v, wt loss)




anti-inflammatory




Recall, PDE-5 inh is Viagra


IL-17 blocker

secukinumab


Hemidesmosomal antigens in Bullous Pemphigoid?





Autoantigens against:


BP Ag1


BP Ag2 (BP 180)




Think elderly, rigid deep blisters (negative Nikolsky), hemidesmosomes on basement membrane

Think pemphig OLD

symptoms in pemphigus folicaceous




antigen

crusted scaly skin (subcorneal acantholysis)




ab against Desmoglein1 on skin (vs 1 or 3 in pemph vulgaris)


Dermatitis Herpetiformis vs. Linear IgA Dermatosis.


Causative agents?
Treatment?

IgA skin deposition:




DH vs. Linear IgA Dermatosis.




Causative agents?


Treatment?

DH: gluten


Linear IgA Derm: vancomycin!! & other drugs




TX: dapsone (since neutrophil mediated), topical steroids.




Also, gluten-free diet with DH.


Example of dominant negative dz

STAT3 JOB


Example of haploinsufficiency

GATA-2 haploinsufficiency


(recall, low NK bright, mono/mac)




CTLA-4 haploinsufficiency


(CD 152 talon)


Basophil Activation Test (BAT) lead to surface expression of which markers?

CD203c (usu. on surface at low levels)


CD63 (coats histamine secretory granules)


What is the receptor for Stem Cell Factor for mast cell activation?




Most common activating mutation?

CD117 (c-kit rec)




D816V mutation


The common progenitor for MC, basophils, and eosinophils has which CD marker?

CD34


which receptor on Mast cells binds vancomycin, opiods, and icatibant?

MRG-X2 ("murg X2")


Receptor for C5a




CD number?


Expressed on which cells?

CD88, on MCtc (mast cells) & basophils




Recall, C5a is a powerful chemotactic factor for neutrophils.


Criteria for systemic Mastocytosis? (Major & minor)



1 M + 1 m OR 3 m




Major: dense infil >15MC/aggre


minor:


- >25% spindle shaped


- D816V


- CD2 or CD25 nail (IL2Ra) on MC


- tryptase > 20ng/ml


3 criteria for MCAS (mast cell activation syndrome)?

1. classic sx in 2 organ system


2. increase mast cell marker (tryptase, urine metabolites) with sx


3. response to anti-mediator therapy


which ANCA (cytoplasmic proteins in neutrophils) are a/w which disease?




Name examples of ANCAs.

c-ANCA (PR-3): GPA, EGPA (less common), (ANCA by indirect immunofluorescent, confirmed by PR-3 by ELISA)




p-ANCA (MPO): EGPA (more common), Microscopic PA


Cryoglobulinemia vasculitis in which diseases?




lab findings

infection (esp Hep C!!!)


neoplasms


connective tissue dz




(+) cyroglobulin, (+) RF, (+) hep C, low complements


vasculitic urticaria vs. regular urticaria?

painful, last >24 hours, less pruritic, central red, leave hyperpigment +/- systemic features


What is Felty's syndrome?

RA


splenomegaly


neutropenia

Felty's Rhematoid Arthritis triad

Name the CTLA-4 (CD152 talon) blocker?

abatacept


Name the IL-6 Rec blocker (used in RA)

Tocilizumab

6 toucans liz zoo

Name a JAK inhibitor

tofacitunib

jack tofu nibbles

Highly specific auto-ab for SLE Lupus?

anti-DNA, anti-Sm


Auto-ab in Neonatal SLE, cutaneous SLE & Sjogren syndrome

Anti-Ro(SSA) and anti-La (SSB)




Recall, T cell infiltration in Sjogren biopsies.


Auto-ab in Systemic vs Cutaneous Drug-induced SLE

systemic: anti-histone




cutaneous: anti-Ro/La


Main tx in Rheumatoid Arthritis vs SLE?

RA: methotrexate or other DMARDs +/- biologics




SLE: hydroxychloroquine


Auto-ab in scleroderma


(aka systemic sclerosis), including CREST)

Anti-centromere


Anti-toposiomerase (SCL70)


Anti-RNA polymerase 3




Recall, use ACE-I instead of steroids!


Which Rheum dz do you avoid corticosteroids due to SE of renal crisis?




TX instead?

scleroderma (systemic sclerosis), use ACE-inhibitors instead!


HIV diagnosis, which antibody & antigen test(s) are good for:


1. Screening Rule OUT?




2. Confirmatory Rule IN?

Rule OUT:


1. ab: ELISA, Rapid HIV, Western


2. antigen: p24 (4th gen screen)




Rule IN:


1. ab: Western blot or Indirect IF


2. antigen: PCR HIV DNA or RNA


Which HIV protease inhibitor Med can increased inhaled or nasal CS to systemic levels?!

Ritonavir




Ritonavir puts steroids Right On INTO your body!


HIV prophy organisms & meds?

PJP & Toxo: Bactrim


Histo: itraconazole


Cocci: fluconazole


MAC: macrolide


In EOE, which cytokines are involved?

IL-5


IL-13 recruit eotaxin-3 (CCL26)


how much DM is recommended in SCIT?




Airborne?

7 micrograms per injection




No, quickly settles (large 10-35 micron)


Most common cat allergen? Airborne?

Fel d 1 (homologous with uteroglobulin)


minor: Fed d 2-4




Yes, <10 micron so airborne for hours






Most common mouse allergen

Mus m 1 (urinary protein)


Primary, sec, and tert prevention of allergic dz

Primary: prevent sensitization


Secondary: prevent allergic dz


Tertiary: prevent dz severity


Level of DM to induce sensitization in most studies, VS nonallergic subjects?

Most: 2-10 mcg/ gm air




nonallergic: 20 mcg/g


How long after cat removal to reduce allergen levels to background level of <10 mcg/g?

10-20 weeks (3-4 months)


For HES (Hypereosinophilic Syndrome),




1. MC genetic mutation for myeloproliferative variant? tx?




2. tx for non-myeloprol?

1. 4q12 del (FIP1L1-PDGFRA fusion), tx is imatinib TK inhibitor




2. glucocorticoids (but r/o out Strongyloides first)


Where can imatinib bind, and give examples?

1. abl (i.e BCR-abl philadelphia chromsome)


2. c-kit/CD117 (non-D816V)


3. PDGR-r (i.e. FIP1L1-PDGRa)


Two-tier vs single-step testing for Lyme/borrelia?

Two: ELISA --> Western




Single: ELISA measuring IgG for Variable major protein-like sequence-expressed (VIsE) 6th invariant region (C6)


When must I use penicillin desens for syphyllis/Treponema?

PCN-allergic patients in:


- neurosyphyllis


- pregnant women


- congenital syphyllis


Adult pneumonia (CAP) first vs second line treatment?

doxycycline or macrolide (azithromycin, clarithromycin)




2nd line: fluoroquinolone OR (1st line + beta lactam)


collarette flakes on eyelids are c/w?

seborrhea of the eye


Name 6 eye drops meds that are dual anti-histamine / mast-cell stabilizers

OAK ABE


olopatadine


alcaftadine


ketotifen




azelastine


bepotastine


epinastine




Differentiate btw the Type 4 hypersensitivity in regards to:


- reactions / sx


- cell types


- cytokines

4A: contact derm = macrophages, TH1 = IFN-g


4B: DRESS, maculopap = eos, TH2 = IL-4, IL-5


4C: SJS/TENS, drug hep = CD4, CD8 = CTL, perforin, granzyme


4D: Pustular (AGEP) = PMNs, T-cell = IL-8

A. Contact your date. Get your mac on and interfere G.


B. Get DRESSed maculopapular, EzPHIL brings the IL4,5 bling.


C. SJS at 10s, where you do drugs and get CD8 to shred.


D. Pus oozing at the afterparty with neutrophils cleaning up on Aisle (IL) 8.

Describe the 3 models of Drug Allergy mechanisms of action..

1. Hapten (med) binds to self-proteins to engage TCR.




2. P-I. Pharm (med) engaged TCR directly.




3. APR. Med alters peptide repetoire (binding specficity), creating neoepitopes that can engage TCR.


Drug allergy: dapsone


HLA, ethnic?


reaction?

HLA B13:01 13 Asians


"dapsone hypersens syn"


Drug allergy: carbamazepine


1. HLAs? & Ethnic groups?


2. Drug reaction?

HLA B15:02 (15 Han Chinese)


HLA A31:01 (31 A Europeans)




Stevens Johnson (type 4C, CD8, CTL)


Drug allergy:


HIV RTI med? HLA? ethnic group?

Abacavir


HLA-B57:01 57 white HIV,


delayed hypersensitivity


Drug allergy: allopurinol


HLA, ethnic group


reaction?

HLA B58:01 58 Asians




severe cutaneous reactions


PCN MAJOR vs minor determinants

MAJOR: Pre-Pen (Benzyloyl-Polylysine)




minor: pen g, -loate

MAJORly PREtty BENZ LOYAL!




pen g minor are low apes.

MC drug causing serum sickness (F, arthralgia, LN, proteinura) in children?




why?

cefaclor




toxic metabolites from altered metabolism


causes of drug-induced thrombocytopenia?




other ab in TTP?

- Heparin (HIT): IgG to heparin-platelet factor (HPF 4)


- Vancomycin: ??


- Quinine-dep glycoproteins 2b/3a, 1b/9




anti-ADAMTS13 (von willebrand cleaving factor) in TTP




Agents causing PIE (pulmonary infilatrates with eosinophilia)?





Nitrofurantoin & other abx


NSAIDs




gran lungs = MTX


eos + lungs = Nitro, NSAIDs


eos + nose = AERD NSAID


eos + kidney = ceph, pcn






agent causing acute granulomatous ILD?

methotrexate




eos + lungs (PIE) = Nitro, NSAIDs


In Toxic Epidermal Necrolysis, should you use steroids?

NO! It's contraindicated!


This monobactam has the same R chain as this cephalosporin.

AZtreonam & CefTAZadime


Chemotherapy agents that can cause IgE-mediated allergy & sensitization after multiple rounds of that treatment?

Platinum compounds (cisplatin, etc.)


In AERD patients, which cytokines are:


1. Increased?


2. Decreased?

1. LTC4 synthase, LTs, & LT receptors (cysLTR 1 & 2)




2. Decreased lipoxin & EP2 (rec for PGE2, which (-) 5LO)


1. What does prostaglandin PGE2 block?


2. What is its receptor that is decreased in AERD?

1. PGE2 blocks 5-LO


2. Receptor is EP2




Recall, zileuton also block 5-LO


Which type of reactions to one particular NSAID is NOT going to cross-react to other NSAIDs?

anaphylaxis


hypersens pneumonitis


aseptic meningitis




Cytokine Release Syndrome is a/w which cytokines and mab?

IL-6 & TNF-a


rituximab (anti-CD20)


muromunab (anti-CD3)


Btw DRESS & TEN, which has more autoimmunity vs mortality?

TENS: more mortality




DRESS: more auto-immunity (think 4B. eos IL-4,5)


Cold urticarias with Negative Ice-cube test?

1. Cholinergic (cold-induced) urt


2. Systemic cold urticaria


3. Cold-dependent dermatographism


4. PLAID (AD) - PLYg2


5. FCAS (AD) - CIAS1-AP


What condition has been associated with solar urticaria?

Erythropoietic protoporphyria


Name physical urticarias that can be passively transferred by serum.




Name known Ig associated.

Cold-induced (IgG,M,E, cryoglob)


Solar Type 1 & 4


Dermatographism (IgE)


auto-antibodies aw CIU?

thryoid: anti-TPO > anti-TG




IgG,IgM against α chain of FCeR1 (high affinity rec), and possibly augmented by C5a




Recall, C5a rec is CD88 on MCtc & basophils and is a powerful chemotactic factor for neutrophils.


Recall, Langerhan/DCs lack beta unit on FCeR1


decreased C1q and anti-C1q antibodies is seen in which diseases?

AAE (acquired angiodema)


HUV (hypocomplementic urticaria vasculitis)


Factor I does what?


Deficiency may lead to what?

Factor I inhibits C3




Factor I deficiency may lead to urticaria


Without Factor I blocking, C3 is overactivated, leading to lots of C3a anaphylotoxin and urticaria.


Where does C1-INH block?




mutation gene?

C1-INH blocks C1, pre-kallikrein, and Factor 12.




Mutation: SERPING1 (AD)


Which HAE tx has risks for anaphylaxis?

ecallantide (Kalbitor)




MC cause of chronic urticaria?

physical urticaria - 20%




(the rest (80%) is idiopathic CIU)


which physicial urticaria have similar sized hives as aquagenic urticaria?

Cholinergic & Aquagenic both have very fine (1-3 mm) hives.


Which HAE tx almost always have local injection reactions?




due to which receptor?

icatibant (Firazyr) - skin on fire!




MRG-X2 (recall, opiod rec on mast cells)


What is RA,NTES?


Other name?




Role?

a chemokine (Regulated on Activation, Normal T cell Expressed and Secreted)




CCL5




(+) NK cells & also suppress HIV


Hypersensitivity Pneumonitis (HP) predominant with CD4 or CD8?




What cell may you seen on histo lung bx?

Trick question!


Early: CD8


Later: CD4, neutrophils




multinucleated giant cells


Agent in Farmer's lung HSP?

Thermophillic actinomyces


Mycopolyspora faeni


Woodworker agents causing HSP?




Which also cause OA?

Alternaria mold


Suberosis in corkwood


Plicatic acid in wood (also in OA)

Woodwork with:


alternate clubs (made from wood) in hand


driving cork Subaru


pliable wood in the trunk

Normal sweat chloride levels

30-40 mmol/L




60 is positive!


What does A1AT inhibit?




Genotypes? i.e. M, etc.




type of emphysema?

A1AT (-) Neutrophil elastase




M (normal) -> S -> Z -> Null (worse)




panlobular/panacinar


(vs centrilobular in cigarettes, paraseptal in ptx)


Most important radiographic finding in ABPA?

central bronchiectasis




+/- fleeting infiltrates


Anemophilous?


Entomophilous?


Amphiphilous?

Anemophilous: wind pollinated Entomophilous insect pollinated Amphiphilous: BOTH


Which fungi are prevalent on prevalent on Dry, Windy Days?

Dry, Windy Days




Alterneria (club shaped)


Cladosporum (cigar shaped)




Also Epicoccum



Smoking cigar with club in hand on hot windy day

Which fungi are prevalent on Humid (steamy) Nights?

Ascospore


Basidiospore (mushrooms, puffballs, smuts, rusts)

Busy Smuts and Ass on Humid Nights

Virus with molecular mimicry to:




glutamic decarboxylase (GAD)?

Coxsackie B


Virus with molecular mimicry to:




MBB (major basic protein)

Hep B

Hep B in Major League Baseball player

Virus with molecular mimicry to:




acetylCHOLine receptor?

Herpes simplex


Name antigens on RBCs

Rh


D, Kell, Duffy




A,B, O


H-antigen is in O group and is absence in "Bombay" phenotype in LAD2 subjects


I antigen (IgM, cold-reactive AIHA)


?? mult sites (IgG, warm-reactive AIHA)


P antigen (IgG, paroxysmal cold hemoglobinuria, positive polar ice cube test)




What tests should you do with insect-sting anaphylaxis?

skin test --> sIgE --> repeat skin test 3-6 months later


(If tx with VIT, treat all positives tests regardless if no sting before).




tryptase (positive >11)! (for systemic mastocytosis)


Risk factors for severe venom/sting reactions?

older


male


repeated stings


honeybee stings


severity at initial sting


baseline tryptase


beta blockers / ACE-I


Most common indoor molds?

Penicillium


Aspergillus




Which aeroallergen IT is standardized in the US?




Who oversees it?

Grasses


Short ragweed


DM


Cat




CBER under FDA






With Immunotherapy (IT), what markers goes up?

specific IgE increased initially, then decrease later.


IgG1 (early), IgG4 (later)


TH1: IFN-g (IgG2 class switch), IL-12


Treg: IL-10, TGF-b (recall, these also stimulate IgA class switch IL-10 also helps IgG1, IgG3 class switch.)


With immunotherapy (IT), what receptor (& CD name) is decreased?




With IT, which cytokines are decreased?

low affinity FCeR2 (CD23)




decreased HAF, PAF, TNF


Immunotherapy is indicated for AD with sensitization to what?

DM


WHat med should you consider in refractory anaphylaxis due to beta blocker?

glucagon (has inotropic & chronotropic effects on the heart, since not dependent on adrenergic receptors)


Consider stopping which meds to start IT?

beta-blockers




??ACE-I (for VIT)


All of these AIT forms are efficacious EXCEPT for:


1. epicutaneous (sticker)


2. intranasal


3. intralymphatic


4. Rinkel

Rinkel (initial dose based on serial intradermal)


Name some adjuvants for immunotherapy (IT).

Center-Al - aqueous, alum-precipitated, less systemic reactions




MPL (Monophosphoryl Lipid A)


General rule of thumb in future prognosis of stopping immunotherapy?

The longer, the better.




After 3-4 years of therapy, 30-40% of patients report return of symptoms 3-4 years later.


FDA Pregnancy Risk categories?

A. no risk


B. no risk in humans (budesonide, montelukast, cromolyn, Xolair)


C. ?


D. Positive risk


E. Contraindicated!


Main allergen types in plant/paleo diet (seeds, nuts, legumes)?




How about fruits?

prolamin (includes lipid transfer protein in fruits)


cupin

Lame cupids eat paleo diet.

Beta-agonist: What makes LABA longer acting?


They have long hydrophobic tails that is stuck to theplasma membrane “exo site”, whereas the “albuterol” portion is hydrophilic.



Which inhaled beta agonists are full vs partial agonists?



Formoterol: Full agonist, Fast-acting



salmeterol& albuterol are partial agonists.



Name some adverse effects of beta agonists?




O2, e+/-, & glucose?

Tremor for the first week



MI, Prolonged QT, palp/arrhythmia



Transient dip in oxygen, K+, Mg+ and increase in glucose



How does beta-2 desensitization affect the medication?


It decreases duration(i.e. 8 hrs instead of 12 hrs), NOT degreeof bronchodilation. It also does NOT affect albuterol response in acute asthma.



Name some ANTI-cholinergics inhalers.




Which musc receptors do they bind?

SAMA:


Ipratropium (M2 = M3)




LAMA:


Tiotropium (M3 > M2, dissociates from M2 quicker)


Umeclidinium


Which of the 5 muscarinic/acetylcholine receptors are predominant in lungs?




Their action in the lung?

M3: the main one that causes bronchoconstriction!


M2: excitatory & inhibitory (inhibition may cause paradoxic bronchoconstriction)


M1


theophylline MoA & SE?

(-) PDEphosphoDiesterase, which usu breaksdown cAMP/cGMP.




Theophylline = Increased cAMP/cGMP = bronchodilation, anti-inflammation.



SE: (-) adenosine receptor, causing (+) CNS, arrhythmias, gastric secretions


Theophylline therapeutic range

10-25 mg/L


What decreases theophylline? Remember, theo has no effect <10mg/L.

Meds: rifampin, AEDs


Smoking


Children


High protein, low carb diet



What increases & "boosts" theophylline? Recall, toxicity >25mg/L.

Meds: OCPs, Zileuton, macrolide, cipro, cimetidine, verapamil, SRI


Liver disease, CHF, alcohol


Viral disease, PNA, vaccines


Old age




Which meds decreases steroids?

Increased metabolism:

rifampin,

AEDs


antacids (reduce bioavailability)


Which meds increases steroids?

Decreased metabolism:

ketoconazole,OCPs




Methylpred also affected by clarithromycin and troleandomycin.


Things that are Inflammatory:



IL-1, IL-6, TNF


IL-12, IL-18, IFN-g


HAT


PDE


Things that are ANTI-inflammatory:

Steroids


NSAID


H2 receptor (increase IL-10)


IL-10 / TGF-beta (IgA class switch)


IL-35


HDAC


PGE2 (-) 5LO


Antihistamine MoA?

Inverse agonist: binds H rec, and pushes it to the inactive form.


AntiHistamines non-H1 effects? In which meds?

Anti-CHOLinergic: all 1st gen


Alpha-blocker: promethazine


Local anesthetic: diphenhydramine


Anti-serotonin: cyproheptadine (appetite)


Important details of glucocorticoid structure:


A-ring C1-2: double bond increases GLUCO > mineralocorticoid activity)


C-ring C11:pro-drug ketone (C=O) must be converted to OH group to be active


i.e.cortisone => hydrocortisone, pred => prednisolone


D-ring: C16,17,21:additions increase potency and enhance degradation.


Cortisol is bound to which plasma proteins?


Transcortin (high affinity, few around)



Albumin (low affinity, lots around)



glucocorticoid receptors?


Which one is active?


GR-alpha (active)


GR-beta (inactive) – increased in steroid resistance, fatal & nocturnal asthma, nasal polyposis


glucocorticoid pathway of mechanism of action?

GC goes inside cell and bind GR-alpha, causing heat shock proteins to dissociate, allowing GR-a to become phosphorylated dimer to go to nucleus to bind DNA:


1. TRANS-ACTIVATE (binds GRE on anti-inflamm genes: IL-10,GILZ, MKP-1, IkBa, TTP [degrades inflamm mRNA]), HDAC [re-wraps histone])


a. Note, GC may (+) HDAC at low conc and may (+) HAT (for anti-infl genes) at high conc.


2. TRANS-REPRESS (binds and inhibits TF that promotes inflammatory genes).


Name other SE of steroids (skin, mm).

Skin (striae, acne, hirsutism)



MSK (aseptic necrosis, myopathy)



Local: dysphonia, thrush



Effects of LTB4 vs cysLT (LTC/D/E)?


LTB4: chemoattractant for Neut & Eos (Note: LTB-R1 is high affinity.)




cysLT: POTENT bronchoconstriction >>> histamine.Also recruits some Eos. (Note: cysLT-R1binds LTD > C > E and is blocked by meds).

LT Body 4 is ATTRACTIVE for Neut & Eos




cyst LT C,D,E chokes

In AD, decrease in which tight junction protein may allow Langerhan to reach out outside?

Claudin-1 (CLDN1 gene)



Filaggrin:


1. Odd Ratio for PN, AD, & asthma?


2. Found in lungs?


3. Downregulated by which cytokines in severe AD?

1. PN 5x, AD 3x, and asthma 1.5x



2. No, not found on bronchial epithelium



3. Filaggrin is downregulated by IL-4, IL-13.



TSLP



1. Expressed by which cells?



2. Does what downstream?


1. Keratinocytes expressed TSLP


2. TSLP (+) DCs to release chemokines CCL17 and CCL22, which attract T cells. TSLP also (+) naïve T => TH2.




Recall:



CCL26 (eotaxin-3)


CCL27 (CTACK)


In AD, infiltrating T cells release which ligand for E-selectin (CD62E)?

CLA (Cutaneous Lymphocyte-associated Antigen)




(Recall, selectin CD62 also bind CD15 Sialyl Lewis X/A carb as well, and its fucosylation is the problem in LAD2.)

T cells send out cute LALAs (CLA) to be selected to E-selectin

Cytokines found acute vs chronic AD?




IFN-g does what to keratinocytes?

Acute AD (TH2): IL-4, IL-5


Chronic AD (TH1): IL-13, IL-12, IFN-g




Keratinocytes=>TSLP, (+)DCs


IDEC (+) Tcell to make IFN-g


IFN-g (+) Fas (CD95) on keratinocytes, ??? though decreased IFN-g systemically


Chemokines in Atopic Dermatitis?

CCL5 (RANTES)


CCL11 (Eotaxin)


CCL13 (MCP-4)


CCL17 (TARC)


CCL27 (CTACK)


IL-16 (attracts TH2)




CTACK = cutan T cell attact chemokine, attracts CLA(+)/CCR10(+) T cells




TARC = thymus & activ.-reg chemokine




Recall, CCL17 & 22 also attract T cells.


CCL26 is eotaxin 3.


Which skin DCs:

1. has more FCeR1? and (+) Tcells to make what?


2. has FCeR1 missing which subunit?


3. has Birbeck granules?



1. IDECs > Langerhans

IDEC (+) T cell to make IFN-g


2. Langerhans lacks classic beta subunit of FCeR1


3. Langerhan has Birbeck gran




recall, autologous ab to alpha unit of FCeR1 in CIU


In AD, increased microbes & infections is due to what?

Increased TH2, leading to decreased antimicrobial expression (i.e. H-beta defensin 2 & 3, Human cathelicidin LL-37) by keratinocytes.


In nasal provocation challenge, which are Pre-formed vs Newly-formed mediators in MC & basophils degranulation?

Preformed: histamine, tryptase, bradykinin




New: CT, PGD2


In nasal provocation, do steroids decrease secretions of:


- albumin (plasma leak)?


- glandular secretions?

- albumin (plasma leak)? yes



- glandular secretions? No



Risk of AR?



- Maternal smoke



- High grass pollen count



- Mediterranean diet


- Maternal smoke: increased risk



- High grass pollen count: DECREASED risk (thinkfarm/rural setting)



- Mediterranean diet: DECREASED risk (thinkanti-oxidants)



Does IntraNasal CS affect airway BHR?





Is there BHR in NARES?

YES! INS decreased BHR.





Yes, there is BHR in NARES.

For AR, does skin test or sIgE have better sensitivity?


Neither, both have ~70% sensitivity



Gustatory rhinitis:



- Due to which fibers?



- Treatment?


Due to (+) of sensory c-fibers by capsaicin on TRPV1receptor



TX: ipratropium



rhinitis of pregnancy:



1. Do INS steroids work?



2. Frequency? When resolves?


1. Yes, if they had pre-existing AR. But NO if it’s purely pregnancy-induced. Instead, use nasal decongestant & supportivemeasures. (Avoid ORAL decongestion, which is a/w gastroschisis! Yikes!)


2. 20%. Resolves within 2 weeks of delivery.


Atropic rhinitis (think old women with halitosis):


1. Which bacteria implicated?


2. TX?

1. Klebsiella ozaenae



2. TX: lavage, debride crust


think ozone crust

DDX for perforated nasal septum?


Cocaine



GPA (wegener’s)



Meds a/w rhinitis


NSAIDs


OCPs


Anti-HTN


PDE-5 inhibitor (sildenafil, etc)


Pyschotropics & gabapentin






Recall, PDE-4 inh is Roflumilast & Apremilast


Orchard & Timothy grass oral allergy is cross-reactive to which foods?

orchard grass:


melon, PN, potato/tomato (like latex hev b 7)




timothy grass:


chards, orange


When do sinuses develop?


ME at birth



F by Five yrs of age



S by Six (really 8-10)




(Think up and back, or alphabetically.)

Where do the sinuses drain?


M, E (anterior), F => ostiomeatal complex below middleturb



E (posterior) => superior meatus



S => sphenoethmoid recess above superior turb



What is concha bullosa?



Haller cell?


Mucocele?

Concha: Air in middle turbinate (Associated with septal deviation, but NOT sinusitis!)



Haller cell: Ethmoidal air cells along orbit floor (It DOES increase risk of acute sinusitis.)




mucocele: Epithelial lined sac completely filling the sinus. Mostly in frontal or ethmoid sinus, a/w CRS and may expand. Removed with surgery.


Acute rhinosinusitis:


1. duration definition?


2. associated receptor?




Viral vs Bacterial sinusitis?

4-12 weeks (3 months)


ICAM (CD 54) is rec for both integrin & rhinovirus



Viral if <10 days & not worsening


Bacterial if worsening(or double worsening) within 10 days, or no improvement after 10 days


CRSwith Polyps (W v E) vs No polyps:

Which is TH2 or TH1?


Which one may respond to oral steroids?

POLYPS: Western polyps & AERD, think TH2 & eosinophils, but Asian polyps and CF have more TH1/TH17 and neutrophils!!


No polyps: TH1 & IFN-g





Oral steroids (as well as saline rinses & biologics) can help shrink polyps!


Which main fungi is associated in AFS (acute fungal sinusitis)?


(FYI, AFS is kinda like ABPA for the nose.)

Aspergillus /Alternaria


Bipolaris


Curvularia


Drechslera


Exserohilium



Fusarium



Helminothosporium


ABCDEF,H

How to test for CSF leak?


Beta 2 transferrin (from CSF)

Which allergen HIGH exposure is most associated with asthma morbidity?

Cockroach



What diet can increase or decrease FENO?


INCREASE: viral URI, AR


sandwich meats, veggies (spinach, green been, carrots, beets)






Decrease: alcohol, smoking


(other: spirometry, CF, pulm HTN)


Significance of periostin?


Reflect IL-13 stimulation




Suggests TH2 phenotype & response to glucocorticoids, along with FENO & serum eos



milk allergen

Bos d 4-8

Bossy milk

egg allergen

gal d 1-5

Egg gal

shrimp allergens

Lit v 1 (myosin)


Pen a 1 (tropomyosin)




Recall, per pen der (tropomyosins)


fish allergen

gad c 1 (parvalbumin)


Hazelnut allergen

Cor a 8,9,14


Apple allergen

Mal d 1,2


Food allergies clinical cross-reactivity %

Cow/goal milk 92%


Melon/fruits 92%


SF 50%


Fish 50%


TN 35% (tho skin test 90%)




Pollen/peach 50%


Latex/fruit 35%




Milk/beef 10%


Legumes 5%




Risk factors for PN allergy?


Risk factor for food allergy



PN: family member wtih PN allergy (Increase 7-fold!!), severe eczema, egg allergy




Food allergy: family history of atopic dermatitis and atopy.


FPIES foods?

MC: milk, soy




Older kids: egg, wheat (& rice, oats), nuts, fish, poultry

Think classic 6 + grains & poultry

PPV, & 50% NNV for ImmunoCap for Food allergy:


1. egg


2. milk


3. PN


4. fish

sIgE (kUA/L)




egg 7 (2 if 2 y/o), NNV 2


milk 15 (5 if 1 y/o), NNV 2


PN 14, NNV 2 w/ hx (5 if no hx)


Fish 20

egg 7 (2), 2


milk 15 (5), 2


PN 14, 2 (5)


Fish 20

Which component allergens of peanut & hazelnut have been a/w clinical severity?

peanut: ara h 1, 2, 3


hznut: cor a 9, 14


Which food additive can trigger asthma?




also consider sensitivity to which food colors?

sulfites (though RARE)




red: carmine


red-orange: annatto




What is chemosis?

edema of conjunctiva

edema of conjunctiva


Name the inhibitory Fc receptor that has cytoplasmic ITIM? CD name?

FCgR2b (think b=block!), aka CD32




FCgR2a is activating


Mold associated with winemaker's HP?

Botrytis

Think winemaker's bottles

Contact derm allergen in henna

paraPhenyleneDiamine




hair dressers & henna tattoo


Do Quaternium-15 and BNP (bromo-nitro-propane) release formaldehyde?

Yes, these preservatives do.


What is Stachybotrys?

indoor black mold


Dz with these ANA patterns:


1. homogenous?


2. speckled


3. nucleolar


4. centromere (think anti-centromere ab)

1. SLE lupus


2. (everything)


3. scleroderma, polymyositis


4. scleroderma


DRESS is a/w which infection?

HHV-6


HEPA filters down to what size

0.3 microns


What is the most potent TLR ligand for B cell proliferation?

CpG (ligand for TLR 9)


Cytokines involved in pathway of steroid-induced apoptosis of eosinophils?

Caspase-3


NJK


Fas (CD95)


Cytokines involved with isoswitching to IgG (subclass), IgA, & IgE?

IgG1/3: IL-10


IgG2: IFN-g




IgG4 & IgE: IL-4, IL-13




IgA: IL-10 & TGF-b


Which HAE tx contraindicated with rabbit allergy?

recomb C1 inh (Ruconest)


What marker may be elevated in cryoglobulinemia?

RF (IgM)


BAL is predominantly CD4 or CD8 in:


1. HP


2. Sarcoidosis

HP: early is CD8 (restrictive), late is CD4/PMN (mixed restrictive/obstructive)



Sarcoidosis: CD4


False (+) VDRL in which condition?

Anti-phospholipid syndrome


Which IgE receptor is low-affinity?


CD name?


what happens with allergy IT?

FCeR2 (CD23)


decrease with IT


Which histamine receptor is Anti-inflammatory?


How?


H2 receptors




by decreasing chemotaxis, increase ANT-inflamm IL-10


Which CD markers are receptors for viruses?

CD21: EBV, HHV8


CD46: adenovirus


CD54: rhinovirus




CD48: NK rec for EBV-infected B cells

21 Nut


46 Rush


48 Rave


54 Law

Cytokines important for T cell survival?

IL-7 for memory T cell, B cell dev


IL-15 for memory CD8 (and NK stimulation!)

What downregulates vs upregulates IgE receptors (FcER1 & FcER2/CD23)?

ACTIVATING:


Signal 1: IL-4, IL-13, IL-9


"Signal 2": CD40L, APRIL/BAFF, TLR-ligand




DOWNREGULATING:


Xolair, IFN-g,


IL-21 (bound to FcER2) --> TF Bcl-6 (THf), SOCS

IgE receptors subunits on FCeR1 vs FCeR2?




CIU has ab to which subunit?


Which cells lack beta unit of R1?





FcER1 is either tetramer (a,b,g,g) or trimer (a,g,g with no beta).


FcER2 is only trimer.




In CIU, there is ab to alpha unit of FcER1.




DC (incl Langerhans) lack classic beta unit in FcER1.

IgE receptor FcER1 vs. FcER2:


Which is high vs lower affinity?


Which rec is downregulated by Xolair?


Which downregulate IgE by membrane form when bound to CD21?


What cleaves it to soluble forms to upregulate IgE?

FcER1: high affinity; downreg with Xolair




FcER2 (CD23): lower affinity, membrane binding to CD21 downregulates IgE. Membrane stalk can be cleaved to soluble CD23 by ADAM or Der p 1, and upregulates IgE.




CD23a on B cells,


CD23b on other cells.

Elevated IL-6 may present with what symptoms?




In which diseases?

fever, microcytic anemia, low albumin, high CRP




Castleman's lymph hyperplasia


Atrial myxoma


Multiple myeloma of plasma cells

Lymph node hyperplasia:


1. Kikuchi disease?


2. Kimura disease?


3. Castleman?



1. necrotizing LAD, self-limited


2. cervical LAD with elevated IgE


3. autoinflammation-like (fever, anemia, elevated CRP) due to IL-6 overproduction.

Name ligands for:


1. TLR 1, 2, 6


2. TLR 5


3. mouse TLR 4


4. TLR 7,8


5. TLR 9


6. TLR 3

TLR 1, 2, 6: lipoprotein, peptidoglycan


TLR 5: flagellan


mouse TLR 4: LPS


TLR 10: influenza




TLR 7,8: ssRNA


TLR 9: CpG DNA (most potent for B cell stimulation)


TLR 3: dsRNA

In thymic development, which mutation is a/w:




Nude SCID (hairless)?

FOXN1 TF mutation

In thymic development, which TF is a/w:




DiGeorge 22q deletion



Tbx1 (Tbox) TF mutation



What cell surface marker is indicative of "exhaustion"?

PD1 (programmed death)

What what age to we convert to more CD45RO > CD45RA?

~college age

CLR C-Lectin family (extracell):


1. What does dectin 1 & 2 bind?


2. DC sign binds?

1. fungal beta glucan, & Der p 1, (+) TH17


2. sugars mannose, fucose

NK KIR receptors:


1. Binds what?


2. Which receptor subtype is activating or inhibitory?




KIR = Killer-cell Ig-like Receptors

KIR receptors bind MHC I on infected cell.




KIR short tail is stimulating


i.e. KIR2DS1




KIR long tail is bLocking and has 2 ITIMs each. i.e. KIR2DL1

NK memory cells are triggered by what?

Infections & Nickel hypersensitivity.


(But we don't know of any specific receptors for it.)




Recall, IL-15 helps memory CD8 but also stimulates NK cell differentiation.

common beta chain:


- CD name?


- receptor family includes?

CD131 donut




receptors for IL-3, IL-5, GM-CSF




(Recall: CD132 demon is common gamma chain)

TNF-alpha


- produced by which cells?


- cut by what to soluble trimer?


- a/w syndrome


- a/w sign during anaphylaxis?


- up or down with IT?


- TNF-alpha receptor blockers used for which anti-inflammatory dz?

TNF-a is produced by mast cells (pre-formed), TH1, among others




TNF-alpha (and TNF rec 1) are both cut by TACE (TNF-alpha converting enzyme) from membrane trimer to a soluble trimer. (TNF rec 2 is a monomer.)




TNF is aw Cytokine Release Syndrome and Hypotension in anaphylaxis.




TNF is decreased with IT.




TNF-alpha blockers used for TRAPs (only etanercept) and DADA2.

Fever, increased CRP and Ig, low albumin is indicative of which response?




Associated cytokines?

Acute phase reaction




IL-6





Intracellular PRRs (pattern recog rec):


1. NLR (+) what cytokines?


2. NLRP3 binds what? associated with which gene mutation?


3. NLPR1 binds what?



1. IL-1, IL-18


2. Alum in vaccines


CAPS (CIAS1-Associated Periodic Syndrome)


3. bacterial muramyldipeptide

What does STING stand for?


What does it (+)?




STING GoF mutation is a/w which syndrome?



STimulator of INterferon Gene




Type 1 interferons




SAVI syndrome (STING-Associated Vasculopathy with onset in Infancy)

MC factor for IVIG side effects in PIDD patient?

concurrent infection

In making IVIG, what removes prions?

nanofiltration

In making IVIG, what inactivates lipid envelope viruses?




Name those viruses

S/D & Caprylate removes


HIV, Hep B & C

3 autoinflammatory disease a/w aMyloidosis proteins?

CAPS (FCAS, MW, NOMID/CINCA)


FMF


TRAPS

What is pathergy?


Seen in which disease?




How is Koebner phenomenon different?

Exaggerated skin injury after minor injury.


seen in Behcet's




Koebner has lines

Intestinal lymphagiectasia with low albumin, low Ig, and low WBCs likely has preferential loss of which cells?



CD4 cells

Treatment for Wegener's GPA renal disease?




Avoid which medication?





steroid,


cyclophosphamide or retuximab




AVOID MTX (bad for kidneys)!

Return the cycling steroids to those Wagon kidneys.

Rheumatoid Arthritis:


extra-articular sx?

Pulm (ILD, org pna, pleural eff, nodules)




CV: Vasculitis, Pericarditis


Skin, Eyes


Felty's splnmegaly/neutropenia



Which pollen can release breathable particles laden with PolyGALACTURONase allergen?

Timothy grass (phleum)

Honeybee and Vespids share limited cross-reactivity which which standardized allergen?

hyaluronidase

Which lab do you use to check for cross-reactivity from sensitization to multiple venoms?

inhibition immunoassay

Risk factor for Idiopathic anaphylaxis?

atopy

Mutation that is a risk factor for insect venom anaphylaxis?

mutation in Tyrosine Kinase Growth receptor (TKGR)

What vital sign is affected maximally by both H1 & H2 receptors?

pulse pressure

Nasal provocation, which cytokines are in the:


Early response?


Late response?

Early: histamine, bradykinin, PGD2




Late: IL4/5/13, eotaxin, ECP

Which are Kinase vs Phosphatase:


SH1, CD45, calcineurin, and SHP1/SHIP?

kinase: includes lck, syk, SH1




phosphatase:


(+) includes CD45, calcineurin


(-) includes SHP1, SHP2, SHIP

Do ITAM, ITIM, and adaptor proteins have intrinsic kinetic activity?




Name some adaptors.

No, they do NOT have intrinsic kinase or phosphatase activity!




Adaptors: LAT, SLP-76, SLP-65(BLNK), Grb-2

Where does lck kinase play a role?

lck is near the cytoplasmic tail of CD4 or CD8 and phosphorylates ITAMs on the zeta chains and well as recruit ZAP-70.

Which kinase (+) Phospholipase C-gamma in T cell vs B cell?




What does PLC-g do?


PLC-g mutation in which dz?

T-cell: iTK


B-cell: BTK




PLC-g catalyzes PIP2 into DAG and IP3!!!




PLAID syndrome

What phosphorylates PIP2 into PIP3? mutation dz?




PIP3's role?

Pi3 kinase mutation can cause CVID




PIP3 recruits iTK (recruits PLC-g) and aKT (inhibits Bcl-2/Bcl-XL apoptosis & activates mTor pathway of cell growth)



IP3 (IP man) stimulates which ER sensor, to open up which channel?




What happens downstream?

IP3 (+) STIM1 sensor, causing CRAC channel to open the floodgates of calcium into the cell.




Calcium-bound CALMODULIN activates the phosphatase CALCINEURIN, which frees NFAT.

DAG (+) PKC, which (+) which complex?




Think Dagger in your Pocket

CBM


- CARD 11 (prev CARMA1)


- Bcl 10


- MALT 1




Recall,


Bcl-2, Bcl-XL in apoptosis


Bcl-6 (STAT3 in THf)



Ras MAP kinase is activated by which 2 GEFs (guanine exchange factor)?

Ras is (+) by:




RasGRP, recruited by DAG




SOS (Sons of Seven), recruited by LAT/Grb-2





Name cell type, other TF, and cytokines for:




STAT1



STAT 1=> macrophage => IL-12




Name cell type, other TF, and cytokines for:




STAT3? related to 2 cells

STAT 3=> THf (Bcl-6) => IL-21


STAT 3=> TH17 (RorgT) => IL-17


STAT3 mutation = JOB HIES




Recall:


Bcl-2, Bcl-XL in apoptosis


Bcl-6 (STAT3 in THf)


Bcl-10 in CBM complex -> NF-kB



Name cell type, other TF, and cytokines for:




STAT4?

STAT 4=> TH1 (Tbet) => IL-12, IFN-γ, TNF-α

Name cell type, other TF, and cytokines for:




STAT5?

STAT 5=> Treg (Foxp3) => IL10, IL-35, TGF-b

Name cell type, other TF, and cytokines for:




STAT6?

STAT 6=> TH2 (GATA 3) => IL-4/13

ISHAM diagnosis criteria for ABPA

Asthma/CF


positive Aspergillus skin test


IgE > 1000 IU/ml (less if other criteria present)




2 of the following:


# serum precipitating ab Aspergillus,


# radiograph findings,


# AEC >500/mcl

Immunodeficiencies with susceptibility to HSV encephalitis?




Which one is AD vs AR?


What foreign particle does it recognize?

AD: TLR 3 deficiency (independent of MyD88 & IRAK-4). TLR3 binds dsRNA (or synthetic Poly I:C in research).




AR: UNC93b

amorphic mutations in this XL disease causes incontinentia Pigmenti in females and lethal in males?

NEMO (NFkB Essential MOdulator) deficiency

Deficiency in DAF and/or CD59 results in what?

Paroxysmal nocturnal hemaglobinuria (night dark urine)




CD59 is anti-hemolysis

Source of HSP in humidifier & sauna? (Think air)

Aureobasidium

Source of HSP with malt worker?

Aspergillus

Asperger kid drinking malt

Which agents are a/w Occupational Asthma:


1. HMW>10kd, usu IgE-mediated?


2. LMW <10kD:


- spray paint, plastics, insulation?


- paint, adhesives?


- nail salon, dental?


- hair bleach?


- wood & sawdust?


- welder?


- solder?


- cleaning agents?

1. HMW (foods)


2. LMW includes:


- isocyanates (spray paint, plastics, insulation)


- anhydrides (paint, adhesives)


- acrylates (nail salon, dental)


- persulfate salts (hair bleach)


- plicatic acid (cedar)


- platinum salt (welder)


- colophony (cosmetics, wax; made from pine tree)


- aldehydes, quaternary ammoniums (cleaning agents)

Cyan sprays, plastics, insulation


A hybrid paint


Acrylic nails & dental implants


Purposeful bleached hair with coco, glyc, parafin


Pliable wood


Platinum welder


Colorful cosmetic wax


All the quarter cleaning agents



What type of proteins are responsible for Oral Pollen Syndrome?

Profilins

Which Ig can activate complement?




alternative pathway???

classic: IgG1/3




alternative: IgG3/4, IgA1/2

Which IgG subclass have shortest half lives?

IgG3, 8-9 days whereas IgG1/2/4 are 23 days.

Ig effector function, can kill though which two ways? which Ig are involved?





ADCC: (No IgM!), IgG1/2/3/4.


Complement: IgM, IgG 1/-/3/4



IL-2 receptor consists of 3 forms with which combinations of subunits?




Recall, disease association(s)?

High affinity:


IL2Rb,


common gamma demon (CD132),


IL2Ra nail (CD25)




Intermediate affinity:


common g demon (CD132),


IL2Ra nail (CD25)




low affinity:


only IL2Ra nail (CD25)




Recall:


1. CD25+CD2 found in mast cell dz.


1. CD25 deficiency in T- SCID & IPEX-like dz.


2. NOT included in IL-15 Receptor, which share IL2Rb & CD132 (common g), but has its own IL-15Ra.



What is lymphotoxin (LT)? Coded by which genetic region?




The 2 forms consist of which units? Which is soluble vs membrane bound? receptors?




membrane form's role is important for what?




Role of membrane form?





Lymphotoxin (LT) is TNF-beta, coded by MHC class 3 region.




soluble: LTa3, alpha trimer, rec is TNF rec 1 or 2


membrane: LTa1b2 (1 alpha + 2 beta); rec is LT beta receptor (LTbR); important for fetal development of lymphoid tissue!



Which IL-1 & TNF receptor is activating?

Activating: IL-1 receptor 1 and TNF receptor 1




Nonactivating: IL-1 receptor 2 is decoy and TNF receptor 2

what does IL-18 do?

aka "IFN-gamma inducing factor"




think TH1 response: IL-12, IL-18, IFN-gamma

Which cytokines help B cells to class switch to IgA?

IL-10 & TGF-beta


(recall, these are T-reg cytokines that are generally "anti-inflammatory")

APRIL and BAFF can both bind to which 2 receptors for B cell activation?

BCMA & TACI




BCMA binds APRIL more strongly!

What are decoy chemokine receptors named?


Which is used by Plasmodium in malaria?




other function?



Atypical ChemoKine Receptor


ACKR1-4


ACKR1 (DARC) in malaria; mutation = resistance




Besides decoy, can transport a chemokine from one side of cell to other.

Chemokine receptors are which type of receptor molecule?

G-protein (7 transmembrane portions)

Integrins (a/b):


- have what CD nomenclature?


- binds which ligands?

Integrins (i.e. a1b1, LFA, Mac) CD11/18, CD49/CD29




Bind Ig family molecules:


ICAM-1 liar (CD54), rhinovirus


ICAM-2 dozen (CD102)


ICAM-3 lose (CD50)


ICAM-4 Noreen CD242

Selectins
- has which CD nomenclature?


- binds which ligands (CD names too)?

Selectins are CD62E/P/L




Bind Sialyl Lewis X (CD15) and CLA




Recall, CD15s problem in LAD2

What other proteins are coded in MHC Class I, II, & III gene regions?

MCH I gene: MHC I


MHC II gene: MHC II + TAP (MHC I presentation)


MHC III gene: Complement, Lymphotoxin (TNF-b)

IRAK-4 deficiency lead to which types of infections?

pyogenic infections.




MyD88 pathway (recall, girl with pcv meningitis)

What is C3 Nephritic Factor cause disease?

stabilize C3bBb so Factor H can't even degrade it, so complement keeps activating

What helps transport IgA & IgM into the lumen?

Poly-Ig receptor

Which cytokines (+) class switch to IgA?

TGF-beta, IL-5

Chemokines in T-cell zone (parafollicular) & its receptor?

CCL19/21 binds to CCR7

Pro-Apoptosis vs Anti-apoptosis pathways?

Pro-apoptosis:


Intrinsic: Bim/Bax/Bak => caspase 9


Extrinsin: Fas (CD95): FasL (CD178) => caspase 8


Caspase 8/9 => Caspase 3




Anti:


Intrinsic: Bcl-2, Bcl-XL




Recall:


Bcl-6 (STAT3 in THf)


Bcl-10 in CBM complex -> DAG/NF-kB

Which CD marker is on monocytes & part of TLR4?

CD14

plasmacytoid DC has which receptor (also CD name?) but lacks which other CD marker found in other DCs?




Role of plasmacytoid DC?

Has IL-3 receptor (CD123 denim), but lacks CD11 integrin




P. DC secretes IFN-a, helping viral infections!

Which chemokine receptor is a/w susc to West Nile virus?

CCR5, the same one that confers resistance HIV




Recall: CCR5 binds CCL2/3


CCR7 binds CCLL 19/21

Vit B12 is elevated in which diseases?

ALPS


Myeloproliferative HES

Tranplant risks: lowest to highest?




matched sibling, no conditioning


matched cord


matched unrelated


haploidentical

Lower risk:




Matched sibling


Matched cord & unrelated


haploidentical




Highest risk

Describe graft rejection:


1. Hyperacute rejection


2. Acute


3. Chronic




GVH:


1. Acute


2. chronic

1. rejection on table (preexisting ab)


2. days to months; T-cell killing


3. months to years; CD4 vasculopathy




1. GVH acute macpap rash <100 days


2. GVH chronic skin/alopecia/myositis/FTT/cytopenia/pericarditis >100 days

In transplant, what is conditioning for?




When to avoid conditioning?


Example reduced regimen?




When is it unnecessary?

Conditioning reduces host's immunity to make "space" for new B cells.




Avoid/reduce conditioning with active infections.


Ex. reduced regimen: fludarabine, alemtuzamab, busulfan




Unnecessary for SCID with matched sibling donor.

Risk for which infections with TNF inhibitors?

mycobacterium TB reactivation


Fungal (i.e. histo)

which is best med to stop mast cell degranulation?


cromolyn, cetirizine, epi, steroid

epinephrine (b2 agonist)

Choose a specific human eosinophil marker:


arysulfatase, EDN, MBP1, MBP2

human is MBP2

Cathepsin G is unique to which cell?

neutrophils, which also has LTB4

Basement shower mold?

Epicoccum nigrum

DLCO is decreased in which obstructive airway disease?

COPD (not asthma!) due to decreased surface area in alveoli.




Recall, DLCO decreased in restrictive lung diseases.

Anaphylaxis in fish may be due to which parasite?

Anisaki

What is Bacillary angiomatosis?

vascular nodules, fever, LAD in HIV (+) people with Bartonella

How long after RBCs & IVIG can you give Live vs non-live vaccines

Live: 3 months after blood products




Non-live: 6-8 months after

Anti-CCP antibodies in which dz?

RA rheumatoid arthritis

What is hypervaccination?


Used for what?




example regimen?

Lots of vaccination to drive up Ig in complement deficiencies




Recall, opsonins include Ig and complement.




Meningococcal vaccine every 3 years.

Dz with early complement (C1-4) deficiencies?

SLE (apoptotic cells)


atherosclerotic diseases




With deficiency, there is no complement to help clear apoptotic cells or cholesterol.

Measure what to assess environmental load of:


1. Gram (+)


2. Gram (-)

1. Gram Pos: muramic acid in the thick peptidoglycan cell wall (vs single layer in GN).




2. Gram Neg: endotoxin found in LPS outer membrane of GN

Infections with NK deficiency?




Deficiency with low NK bright?


Deficiency with low NK dim?

viruses, esp herpes




low NK bright (precursor): GATA2 deficiency


low NK dim (mature): MCM4 deficiency & perforin deficiency causing HLH

NK cell (+) by which cytokine?

IL-15 (which also helps CD8 survival)

North vs South? Examples?


Pooideae


Panicoideae


Chloridoideae

Northern:


Pooideae (Timothy, rye, blue, etc.)




Southern:


Panic: Bahia, Johnson, corn, sugarcane


Chlor: Bermuda, prairie