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14 Cards in this Set

  • Front
  • Back
When is an autoreactive T cell a good thing?
1. Suppress excessive autologous cells
2. Monitor potential autologous malignancies
3. Can suppress T cell activity
When is an autoreactive B cell a good thing?
1. Aid in autoantigen presentation to baby T cells in the thymus, contributing to neg deletion
2. Can pick up IgG by the tail and carry it's immune complex to a T cell
3. Maintenance of the antibody pool as auto-conditions change.
Disease where the body makes antibodies to its platelets?
Idiopathic Thrombocytopenic Purpura
Disease where mitochondrial markers in bile ducts become the victim of T cells?
Primary Biliary Cirrhosis
Female to male ratio of SLE?
5:1, with black females predominant.
2 limitations of SLE diagnostic criteria
1. Patient may not meet the criteria but benefit from treatment
2. Patient may meet 4 criteria and still not have SLE
11 SLE criteria
1. Malar Rash
2. Discoid Rash
3. Oral Ulcers
4. Arthritis
5. Serositis
6. Renal proteinuria or casts
7. Neuro seizures or psychosis
8. Photosensitivity
9. Hemato - penia
10. Immuno disorder
11. ANA
What kind of autoantibodies do SLE patients typically produce?
Anti-nuclear antibodies, which are also found in 1 out of every 10 normal peeps. But SLE ANAs are pathogenic, unregulatable.
Role of Class II HLA genes in SLE?
-The kind and style of autoantibodies
-T and B cell recognition
-Age of onset
-Clinical presentation
Role of Class III HLA genes in SLE?
Predisposition in certain ethnic groups
Environmental causes of SLE
1. UV light!
2. Hair dyes/organics
3. Drug-induced: can be reversed by stopping the medication
4. Viral
Metabolism of sex hormones in SLE patients?
Abnormal. Both genders will metabolize testosterone more quickly and estrogen less quickly.
-"Castrated" females are protected
-"Castrated" males are more susceptible.
Neuroendocrine role in SLE?
Prolactin up, ADH up, everything slightly skewed
Cellular (T and B cell) defects in SLE?
Increased receptor expression and signaling sensitivity, with impaired tolerance and apoptosis, ridiculous amounts of antibody production