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lymphocytes that make antibodies to attack antigens on parasite coat (humoral immune response)
- activated by Th2 cells or T-independent antigens
- transformed into plasma cells, plasmas secrete IgM antibodies
- if activated by T-ind. Cell, limited to creating IgM (not IgG)
- immune response enhanced through T-ind cells
- “Acquired immunity”
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white blood cells that play role in immunity
- send out signals (interleukens) to Th1 sites (cell-mediated responses) and Th2 sites (antibodies responses)
- Th1 site turns on cytotoxic T cells/macrophage, Th2 activates B cells
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cell-signaling protein molecules secreted by cells for intercellular communication
- signal functions against intracellular pathogens (lysis, digestion, inflammation)
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groug of cytokines produced by T cells to signal immune response between cells
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group of cytokines expressed by white blood cells for communication
- T cells send out interleukin signals to Th1 sites (cell-mediated) or Th2 sites (humoral) to activate immune responses
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combines antigen antibody complexes
- system that helps “complements” the ability of antibodies and phagocyctic cells to clear pathogens
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antigen that are capable of varying to avoid immune resp. |
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antigens that are not capable of varying |
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reduced immunity system, reduced immunity efficiency |
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Card agglutination test for trypanosomiasis (CATT) |
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Definition
stain dead trypanosomes and mix it with blood, if blood clumps then body has developed antibodies, indicating that the disease is present inside the body
- can give false-positive, so usually followed up with another diagnostic test such as blood smear or lumbar puncture
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clumping of red blood cells in the presence of an antibody
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swollen lymph nodes around the neck
- major sign of african trypanosomiasis disease
- not every case has swelling around neck, but they will have swelling on other lymph nodes on body
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decrease in red blood cell count
- Normal healthy ~50% red blood cells
- Trypo infected ~ 20% red blood cells
- Red blood cells being destroyed because homotype antigen population is being shed, but the red blood cells recognize these antigens and stick to them
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inflammation of glomeruli (kidney), because so much antigen being produced that red blood cells binding to antigens, causes agglutination in glomeruli, causing swelling
- glomeruli part of kidney is used to filter waste/fluids from blood
- so much surface coat from parasite is being shed that there is an accumulation of antigens in the glomeruli
- ton of red bloods cells bind to antigens and accumulate in glomeruli, causing agglutination
- agglutination red blood cells causes swelling
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gamma eradiate adult flies and then release them into nature, population will not be able to reproduce therefore controlling spread
- difficult tecniques bc thre are 30 different species of tsetse flies, so you would have to create/reaise large amount of many different species
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