Immunomodulation Immunopharmacology Flashcards
Immunomodulation/immunopharmacology
Manipulate the immune response via stimulation or suppression of the immune response
Radiation targets and effects
Targets DNA and Water- causing DNA mutations, and free oxygen and hydroxyl radicals that damage cells
Corticosteriods targets and effects
NF-kB- decreasing gene transcription and cytokine synthesis
Cyclophophasmide targets and effects
DNA- suppresses bone marrow
Methotrexate targets and effects
dihydrofolate reductase- inhibits the synthesis of thymidine and purine nucleotides
Azatiophrine targets and effects
DNA- inhibits DNA and RNA synthesis
Effects of Corticosteroids on Neutrophils
decreases chemotaxis, margination, phagocytosis, ADCC, bactericidal activity
inhibits phospholipase A2
Effects of corticosteroids on macrophages
decreases chemotaxis, phagocytosis, bactericidal activity, IL-1 and IL-6 production and antigen processing
Effects of corticosteroids on lymphocytes
decreased proliferation, T cell response, T cell-mediated cytotoxicity, IL-2 production, lymphokine production
Effects of corticosteroids on complement
NONE
Example of corticosteroids in small animal
prednisolone and methylprednisolone
Example of corticosteroids in large animal
betamethasone, dexamethasone
Examples of non specific immunosuppressives
radiation, corticosteroids, cyclphosphamide, methotrexate and axatiophrine
Examples of selective immunsuppressives
cyclosporine, tracolimus, rapamycin, mycophenolate, lefunomide, antiserum, antibodies
Cyclsporine effect on teh immune system
blocks TH1 response and MHC 1 expression
What drug is ideal treatment in organ transplant and hypersensitivities?
cyclosporine
Tracolimus effect on the immune system
(inhibits B and T cell response)
Rapamycin (sirolimus) targets
m-TOR
Cyclosprine targets
calcineurin
Cyclosprine effects calcineurin by
inhibits signal transduction and synthesis of IL-2 and IFN-y
Tracolimus targets
Calcineurin
Tracolimus effects calcineurin by
inhibits the productin of IL-2, 3, 4, 5 and IFN-y and TNFalpha
Rapamycin effects mTOR by
blocking stimulatory signals from IL-2, 4, and 6
Rapamycin effect on the immune system
promotes tolerance and T reg activity
Mycophenolate is toxic for what species?
dogs- GIT
Mycophenolate targets
DNA
Mycophenolate effects DNA by
preventing DNA synthesis, blocks T and B cell proliferation
Leflunomide targets
DNA
Leflunomide effects the immune system by
decreasing production of T reg cells
Antiserum targets
CD3, 4, and 8
antiserum effects the immune system
by depleting lymphocytes
antibodies target
CD32
antibodies effect teh immune response by
inhibiting the humoral immune response
Bacille calmette- Guerin targets
mycobacterium bovis
TLRs
Bacille calmette- Guerin
mycobacterium bovis
enhances T and B cell responses
Complex carbohydrates
activate macrophages
Examples of complex carbohydrates
zymosan, glucans, lentinans, acemannan
Levamisole effects the immune response
T cell differentiation an dresponse, increases cytokine proudction and phagocytosis
Vitamins A, D and E effect the immune response
increasing IL-2 production, increase antimicrobial capacity in macrophages and DC, increase lymphocyte mitosis
Cytokines target
IL-1, 2, 12 and IFN’s