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med immunology 17
Immunodeficiency disorders & neoplasias of the lymphoid system
| Question | Answer |
|---|---|
| Which immunodeficiency is this: hereditary or acquired, may involve abnormal cytokine/chemokine receptors, T-cell mediated, B-cell mediated, B&T cell mediated, nonspecific mediation by phagocytes/NK cells, complement activated | primary immunodeficiency |
| which immunodeficiency is this: result of other conditions/diseases/infections (malnutrition, chemotherapy side effect, untreated autoimmunity, HIV or other viruses) | secondary immunodeficiency |
| DiGeorge Syndrome is which type of immunodeficiency? | Primary |
| SCID (severe combined immunodeficiency) is which type of immunodeficiency? | primary |
| Frequency of primary immunodeficiency is _____ within the population. Usually due to a problem in ___________ __________ ____. | rare, development of immune cells |
| The earlier primary immunodeficiency occurs, the _____ severe the impact on immune response but ________ opportunity for redundancy | more, reduces |
| secondary immunodeficiencies can also occur by the introduction of __________ drugs used in transplantation. | immunosuppressive |
| what are two causes of SCID? | X-linked: missing gamma chain(cytokine receptors ) Autosomal: missing JAK3 tyrosine kinase |
| What causes bare lymphocyte syndrome? | missing MHC classII |
| what causes ALPS (autoimmune lymphoproliferative syndrome)? | missing Fas (cell membrane determinants) |
| what causes Hyper IgM syndrome? | missing CD40L (cell membrane determinants) |
| what is the other name of Chronic granulomatous disease (CGD)? | Bridges-Good syndrome |
| CGD is a diverse group of hereditary diseases in which phagocytes have difficulty forming the _______ ______ ________ used to kill ingested pathogens by repiratory burst and oxidation. | reactive oxygen compounds |
| Because CGD patients' phagocytes cannot kill ingested pathogens by oxidation, it leads to the formation of _________ in many organs. | granuloma |
| CGD affects about 1 in __________people in the USA. | 20,0000 |
| _________ ________ is a rare autosomal recessive disorder that arises from microtubule polymerization defect in the cytoskelton which leads to decrease in _________ _________. | Chediak-Higashi syndrome, phagocytosis ability |
| What are 3 phases of HIV infection? | acute phase, chronic(latent)phase, crisis phase |
| At initial infection of HIV, __________ decrease | CD4+T cells |
| At initial infection of HIV, CD4+T cells _________ because infected T cells are more prone to lysis(apoptosis) by CTLs(cytotoxic T lymphosites). | decrease |
| During many years of Chronic(latent) phase of HIV infection, what factors lead patients to crucial immunodeficiency level? | gradual decline of CD4+T cells with low level of viral replication |
| At chronic phase of HIV infection, most of the infected cells are localized to ______ ______. | lymph nodes |
| Healthy individuals have CD4+:CD8+ T cells ratio of ________. | 2:1 |
| At chronic phase of HIV infection, which T cells, CD4+T or CD8+T, outnumber which T cell? | CD8+T cells outnumber CD4+T cells |
| At crisis phase of HIV infection, CD4+T cell count drops below ______ cells/uL or less than _____ % of T cell population. | 200, 14 |
| At crisis phase of HIV infection, the patient develop unusual _______, _________, __________. | malignancies, opportunistic infections, general debilitating syndromes(immune system and CNS dysfunction) |
| what is called abnormal cell proliferation? | neoplasias |
| Neoplasias is uncontrolled _______ proliferation that can be related to their normal cell counterparts by surface markers and stage of differentiation. | monoclonal |
| Many neoplasias have ______ _______ causing disregulation of cell proliferation and death. | chromosomal translocations |
| What is this disease: malignant cells of the circulatory system, proliferation of immature WBCs ? | leukemias |