Immune Modulating Therapies Flashcards
Cytotoxic Agents
Inhibit DNA synthesis
BM suppression
Infection
Malignancy
Teratogenic
Cyclophosphamide (Cytotoxic)
Alkylates guanine base
Used in connective tissue disease - severe vasculitis, GPA, anti-cancer agent
Hairloss, sterility, haemorrhagic cystitis
Infection - PCP
Malignancy - Bladder, haem, non-melanoma skin Ca
Azathioprine (Cytotoxic)
Antimetabolite - purine Transplantation Crohns and UC Hepatotoxicity, neutropenia TPMT polymorphism = extremelty susceptible to BM suppression
Mycophenolate Mofetil (Cytotoxic)
Alternative to azapthioprine - transplantation
Alternative to cyclosphamide - autoimmune vasculitis
Infection - herpes, PML (JC virus)
Methotrexate (Cytotoxic)
Inhibits dihydrofolate reductase RA, Psoriasis, Crohns Chemotherapy agent Abortifacient Pneumonitis, pulmonary fibrosis, hepatotoxicty, folate deficiency
Plasmapheresis
Remove plasma and treat to remove Ig - reinfused (or replaced with albumin - ‘plasma exchange’)
Severe Ab mediated disease - Goodpastures, myasthaenia gravis, Ab mediated rejection
SE - rebound Ab production limits efficacy (give with anti-proliferative agent)
Tacrolimus (inhibits cell signalling)
Inhibits calcineurin = reduced Il-2 = reduced T cell proliferation
Transplant rejection prophylaxis
nephrotoxic, HT, neurotoxic, DIABETOGENIC
Cyclosporin (inhibits cell signalling)
Inhibits calcineurin = reduced Il-2 = reduced T cell proliferation
Transplant rejection prophylaxis
nephrotoxic, HT, neurotoxic, DYSMORPHISM, GUM HYPERTROPHY
Sirolimus (inhibits cell signalling)
Block clonal T cell proliferation
Transplant rejection prophylaxis
HT, less nephrotoxic (cf cyclosporin, tacrolimus)
Tofacitinib (inhibits cell signalling)
JAK inhibitor
RA
Apremilast (inhibits cell signalling)
PDE4 inhibitor
Psoriasis, psoriatic arthritis
Anti Thymocyte Globulin (ATG)
Rabbit derived Ab against human T cells
Allograft rejection (renal, heart)
Infusion reaction, leukopenia, infection, malignancy
Basiliximab
AntiCD25 - inhibits T cell proliferation
Allograft rejection prophylaxis
SE - infusion reaction, infection, GI disturbance, longterm malignancy risk
Abatacept
CTLA4 Ig (infusion protein) - reduces T cell activation
RA
SE - infusion reaction, infection (TB, HBV, HCV), malignacy, cough
Rituximab
AntiCD20 - depletes mature B cells
Lymphoma, RA, SLE
SE - infusion reaction, infection (PML), exacerbates CVD