Immunology Flashcards
Which cytokine do macrophages stimulate?
Il-1
Which cytokines do Th cells stimulate?
Everything other than Il-1
Which enlarged lymph nodes are most likely malignant?
Supraventricular
Epitrochlear
Inguinal
What is CD8?
Tk (killer) or Ts (suppressor) cell; responds to MHC-1 (self)
Which of your cells express MHC-1?
All except RBCs and platelets
What is a CD4?
Th (helper) cell; responds 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 cells don’t differentiate into plasma cells => low Ab
What is Bruton’s Agammaglobulinemia?
Young adults w/ defective Tyr kinase=> no Ab, X-linked
What is Job-Buckley Syndrome?
Redheaded females, stuck in IgE stage
What is Multiple Myeloma?
Multiple osteolytic lesions, IgG, n light chains, rouleaux
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 membrane infections
What is Hairy Cell Leukemia?
Fried egg/sunburst appearance, TRAP +
What is Ataxia Telangectasia?
Low Ig A, neuro problems
What is Hyper IgM syndrome?
High IgM, low all other Ab
What do T cell deficiency patient die for?
Viral infection
What is DiGeorge Syndrome?
No thymus/inferior parathyroids, low Ca+2
What is Wiscott-Aldrich?
Low IgM, low platelets, high IgA, eczema, petechiae
What does the CD4 count tell you?
Status of HIV (normal=1,000)
What does the viral load tell you?
Progression of HIV
What is Chronic Mucocutaneous Candidiasis?
T cell defect against Candida albicans, chronic fatigue
What is SCID?
No thymus, frayed long bones, baby dies by 18mo
What organs have the most CD4 receptors?
Blood vessels, brain, testicles, cervix, rectum