Immunology Flashcards
Which cytokines do Th cells stimulate?
Everything other than IL-1
Which cytokine do Macrphages stimulate?
IL-1
Which enlarged lymph nodes are mos likely malignant?
Supraclavicular, epitrochlear (above elbow), inguinal.
What is CD8?
Tk(killer) or Ts(suppressor) cell; responds to MCH I (self).
Which of your cells express MCH I?
All except RBC’s or platelets.
What is CD4?
Th (helper) cell, responds to MCH II (nonself)
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 variableHypogammaglobulinemia?
Kids w/ B cells don’t differentiate into plasma cells. Low Ab.
What is Bruton’s Agammaglobulinemia?
Young adults with defective tyrosine kinase. No Ab. X linked.
What is job-buckley syndrome?
Redheaded females, stuck in IgE stage.
What is Multiple Myeloma?
Multiple osteolytic lesions, IgG, gamma light chains, rouleux.
What is Heavy chain disease?
IgA and Multiple Myeloma of the GI tract.
What is selective IgG2 deficiency?
Recurrent encapsulated infections
What is selective IgA deficiency?
Transfusion anaphylaxis, mucuous membrane infection.
What is hairy cell leukemia?
Fried egg/ sunburst appearance, TRAP +
What is ataxia talengiectasia?
Low IgA, neuro problems
What is Hyper IgM syndrome?
High IgM, low all other Abs
What do T cell deficiency pt. die of?
Viral infection
What is DiGoerge syndrome?
No thymus/inferior parathyroids, low Ca++
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 is Wiscott-Aldriche?
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 organs have the most CD4 receptors?
Blood vessels, brain, testicles, cervix, rectum.