Immune Drugs Flashcards
(53 cards)
_______ cells already committed to a given cell lineage are most sensitive to cytotoxic drugs such as anticancer drugs b/c they are large cycling cells
progenitor
prednisone and methylprednisolone inhibit ______ and ______ synthesis via upregulation of lipocortin, inhibits PLA2
prostaglandin, leukotriene
- suppress both cell and humoral immunity
- inhibit leukocyte infiltration at site of inflammation
- adverse: predispose to infection, adrenal gland suppression
- not toxic to myeloid and erythrocyte progenitor cells
- use for organ transplants, autoimmune diseases, bronchial asthma
corticosteroids (prednisone, methylprednisolone)
azathiorpine converted to _______ by glutathione S transferases than to 6-thiouric acid by xanthine oxidase
- reduce dose in patients with TPMT deficiency
- bioactivated by purine salvage path
6-mercaptopurine
- interferes with nucleic acid metabolism and synthesis, inhibiting cell proliferation
- toxic to proliferating lymphocytes following antigen exposure
- adverse: bone marrow suppression, skin rash, fever, nausea, vomiitng, diarrhea
- occasional liver dysfunction
- adverse increased by kidney disease and allopurinol
- used in kidney/organ transplant, autoimmune disease
azathioprine
- DNA alkylating agent
- nitrogen mustard compound
- most potent immunosuppressive, destroys proliferating lymphoid cells
- organ transplants, autoimmune disease
cyclophosphamide
- folate antagonist
- low dose in rheumatic diseases
- inhibits thymidylate synthase
- high dose inhibits DHFR, blocks cell proliferation
- cytotoxic to proliferating lymphocytes
- prophylaxis for GVHD, rheumatoid arthritis, psoriasis
methotrexate
- inhibit IMP
- prodrug for MPA
- inhibits de novo purine path
- in conjunction w/ cyclosporine and steroids for prevention of rejection in patients with renal allograft
mycophenolate mofetil
- polypeptide antibiotic produced by certain fungi that has immunosuppressive activity
- inhibits calcineurin, blocks production of cytokines (IL-2, 3, IFNalpha)
- does not affect suppressor T cells or T cell independent antibody mediated immunity
- actions of helper T lymhocytes are impaired
cyclosporine
- high first pass metabolism
- metabolized by CYP3A4, active metabolites
- drugs that decrease clearance increase nephrotoxicity and seizures
- increase clearance may lead to graft rejection (naficillin, omeprazole, rifampin)
cyclosporine
- nephrotoxicity (clonidine minimizes, decreases ischemia)
- additive nephrotoxicity
- seizures
- to prevent allogradt rejection, autoimmune
- blood level too low - graft rejection, blood level too high nephrotoxic or seizures
cyclosporine
- macrolide derived from fungus with similar PK to cyclosporine
- effective in acute rejection, more potent immunosuppressant
- kidney toxicity less
- for liver transplants, w/ azathioprine or mycophenolate for kidney and heart transplant
tacrolimus
-omab
murine
-ximab
chimeric
-zumab
humanized
- parenteral monoclonal antibody for murine origin that targets CD3/TCR receptor complex
- treatment of acute allograft rejection in patients who have undergone kidney, heart, liver transplant
- stimulates inflammatory cytokine release due to intact Fc region
- teplizumab substitutions prevent cytokine release, ala ala - make it invisible to Fc receptors on immune cells
muromonab-CD3
- humanized monoclonal antibody
- binds CD52 antigen on normal and malignant B lymphocytes
- CD52 antigen also found on T lymphocytes, NK cells, macrophages, platelets
- approved for CLL
- profound leukopenia, 6 months to get normal counts back
alemtuzumab
- chimeric (murine/human) monoclonal antibodies produced by recombinant DNA technology
- block binding of IL-2 to its receptors
- used prophylactically in combo with cyclosporine patients undergoing renal transplantation
daclizumab, basiliximab
- antibody to surface protein for RSV
- used to prevent RSV
palivizumab
used to treat serious RSV infections
ribavirin
- binds CD20 antigen on B cells
- used in non Hodgkins lymphoma
- in combo w/ methotrexate to reduce signs and symptoms of rheumatoid arthritis in adults who had inadequate responses to one or more TNF antagonist therapies
rituximab
targets CD20 antigen found on preB and mature B lymphocytes, used for CD20 positive follicular non Hodgkins lymphoma whose disease is refractory to rituximab and has relapsed following chemo
tositumomab
- Ab directed towards the IgE high affinity Fc receptor on mast cells
- given SC every 2-4 weeks for prophylaxis of asthma and to control symptoms of moderate to severe asthma not controlled by inhaled steroids
omalizumab
- IL-5 antagonists
- IL-5 responsible for growth and differentiation, recruitment, activation, and survival of eosinophils
- cell type assoc’d with inflammation and an important component of the pathogenesis of asthma
mepolizumab, reslizumab