Immune Drugs Flashcards
_______ 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
- binds Her2 protein on surface of tumor cells
- used for metastatic breast tumors that over express Her2 protein
trastuzumab
- antagonist of GP2b3a receptor of platelets
- used post angioplasty in acute coronary syndromes
- stents coated with this drug
abciximab
- monoclonal antibody that targets integrin molecules blocking the attachment on inflammatory cells to inflamed tissues
- treats Crohn disease and MS
natalizumab
- monoclonal antibody that targets integrin molecules blocking migration of memory T lymphocytes across the endothelium into inflamed GI parenchymal tissue
- treats Crohn disease, ulcerative colitis
vedolizumab
- treatment of bladder carcinoma and a prophylactic agent against TB
- instilled into bladder
- causes local inflammatory rxn with histiocytic and leukocytic infiltration in urinary bladder
- adverse: dysuria, urinary frequency, hematuria, cystitis, urinary urgency …..
bacillus calmette guerin, live intravesical
- infamous drug assoc’d with phocomelia in offspring of mothers who took it during pregnancy
- used in treament of leprosy
- orphan drug status for several conditions
- most heavily regulated drug in US
thalidomide
- restricted use for MDS, mantle cell lymphoma, multiple myeloma
- concerns about increased risk of secondary malignancies
lenalidomide, pomalidomide
- endogenous are secreted by cells in response to viral infection or biological inducers
- approved for hairy cell leukemia, AIDS related Kaposis sarcoma, condyloma acuminata, chronic hep B and C
- antiviral and antitumor activity
interferon alpha
- produced by fibroblasts and epithelial cells
- endogenous interferon gamma triggers autoimmune reaction leading to MS
- decrease number and severity of multiple sclerosis attacks
interferon beta
- derived from genetically engineered EColi
- used in treatment of chronic granulomatous disease, an inherited disorder of phagocytic oxidative metabolism
- potent phagocyte activating properties that result from enhancement of oxidative metabolism in tissue macrophages
- enhancement of antibody dependent cellular cytotoxicity and NK cell activity
- flu like symptoms
interferon gamma
- non glycosylated biosynthetic IL-2 (T cell growth factor)
- for metastatic renal cell carcinoma
- for AML, non hodgkin, HIV, leprosy
- induces proliferation and differentiation of B and T cells, monocytes, macrophages, and cytotoxic lymphocytes
- high dose IV bolus assoc’d with adverse rxn
aldesleukin
- recombinant version of human IL-11
- SC once a day to prevent severe chemo induced thrombocytopenia
oprelvekin
- symptomatic relief for RA but do not prevent erosions or alter disease progression
- not appropriate for monotherapy and should only be used in conjunction with DMARDS
NSAIDS
- cause dramatic improvement in RA
- do not arrest disease process itself
- adverse effects limit long term use
corticosteroids
- widely used to treat RA
- low doses, inhibition of AICAR transformylase and thymidylate synthase
- inhibits DHFR, blocks folate reactions in biosynthesis of nucleotides needed for cell proliferation
DMARDS: methotrexate
- antimalarial, reduce oxidative stress?
- contraindicated in psoriatic arthritis b/c of possible development of exfoliated dermatitis
- can cause irreversible retinal damage
hydroxychloroquine/chloroquine
- don’t give with penicillamine b/c it chelates
- contraindications: pregnancy, liver or kidney impairment, aplastic anemia
- adjunctive treatment of early active cases of adult and juvenile RA, given IM, cutaneous rxns may occur
aurothioglucose
- only gold compound available for oral admin
- treats early active cases of both adult and juvenile types of RA
auranofin
- oral chelating agent
- treat Wilsons, cystinuria, resistant cases of RA
penicillamine
- used for RA, ankylosing spondylitis, ulcerative colitis
- suppess IL1, TNF alpha, apoptosis of inflammatory cells
sulfasalazine
- converted to active metabolite that inhibits dihydroorotic acid dehydrogenase, involved in pyrmidine ribonucleotide synthesis
- translocation of p53 to nucleus, stimulated cells arrest in G1
- inhibits autoimmune T cell proliferation, production of autoAb by B cells
- first agent for RA indicated by symptomatic improvement and retardation of structural joint damage
- cause alopecia, rash, diarrhea
leflunodime
- IL-1 receptor antagonist
- slows progression of structural damage of RA in patients who failed one or more DMARDS
- given SQ once a day
- treat and prevent gout
anakinra, canakinumab, rilonacept
- dimeric fusion protein produced by recombinant DNA technology that binds TNF
- soluble TNF receptor
- given by injection
- RA, works by decreasing TNF alpha effects
etanercept
- chimeric monoclonal anitbody that binds TNFalpha
- IV infusion with methotrexate for RA
- Crohn’s when conventional therapy fails
infliximab
all _____ drugs increase opportunistic infections and the risk of lymphomas
anti-TNF
IL-6 antagonist, may increase CYP450 activity (increase warfarin and cyclosporine metabolism), for RA with inadequate response to TNF antagonists, increase opportunistic
tocilizumab
- recombinant fusion protein composed of extracellular domain of cytotoxic T lymphocyte associated antigen (CTLA4) fused to human IgG
- immune checkpoint receptor found on T cells that binds to CD80 and CD86 on antigen presenting cells, inhibits T cell activation
- blocks activation of T cells by binding CD80 or 86 so CD28 on T cells cannot bind and stimulate the T cell and lead to cytokine release
- severe RA who have failed other DMARDS
- should not take other antiTNF or IL1 or IL6 antagonists at same time
abatacept
- inhibits JAK enzymes
- disrupts cell enzymes involved in stimulating hematopoeiesis and immune cell via signaling path
- 2X day
- metab’d by CYP3A4
- RA in adults intolerant of methotrexate
- increases risk for opportunistic infections
tofacitinib
- oral drug for psoriasis and psoriatic arthritis
- inhibits PDE4, increasing cAMP
- decreases iNOS, decrease TNFalpha, IL-23
- increase IL-10 antiinflammatory
- opportunistic infections
- reports of neuropsych and weight loss
apremilast