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14 Cards in this Set
- Front
- Back
When is an autoreactive T cell a good thing?
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1. Suppress excessive autologous cells
2. Monitor potential autologous malignancies 3. Can suppress T cell activity |
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When is an autoreactive B cell a good thing?
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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. |
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Disease where the body makes antibodies to its platelets?
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Idiopathic Thrombocytopenic Purpura
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Disease where mitochondrial markers in bile ducts become the victim of T cells?
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Primary Biliary Cirrhosis
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Female to male ratio of SLE?
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5:1, with black females predominant.
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2 limitations of SLE diagnostic criteria
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1. Patient may not meet the criteria but benefit from treatment
2. Patient may meet 4 criteria and still not have SLE |
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11 SLE criteria
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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 |
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What kind of autoantibodies do SLE patients typically produce?
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Anti-nuclear antibodies, which are also found in 1 out of every 10 normal peeps. But SLE ANAs are pathogenic, unregulatable.
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Role of Class II HLA genes in SLE?
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-The kind and style of autoantibodies
-T and B cell recognition -Age of onset -Clinical presentation |
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Role of Class III HLA genes in SLE?
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Predisposition in certain ethnic groups
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Environmental causes of SLE
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1. UV light!
2. Hair dyes/organics 3. Drug-induced: can be reversed by stopping the medication 4. Viral |
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Metabolism of sex hormones in SLE patients?
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Abnormal. Both genders will metabolize testosterone more quickly and estrogen less quickly.
-"Castrated" females are protected -"Castrated" males are more susceptible. |
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Neuroendocrine role in SLE?
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Prolactin up, ADH up, everything slightly skewed
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Cellular (T and B cell) defects in SLE?
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Increased receptor expression and signaling sensitivity, with impaired tolerance and apoptosis, ridiculous amounts of antibody production
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