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Pharmacology · USMLE Step 1 · Healthcare and Nursing

USMLE Pharmacology: Immunosuppressants and Antineoplastics

Immunosuppressant and chemotherapy drug classes with mechanism of action and one signature toxicity per card.

About this set

41 mixed cards for USMLE Step 1 Pharmacology. Set 12 of 19 in USMLE Pharmacology. It opens with "Cyclosporine: mechanism of action" and "Signature toxicity of cyclosporine". Study it alongside the other USMLE Step 1 sets below.

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Cyclosporine: mechanism of action
Show answerBinds cyclophilin, inhibiting calcineurin and blocking IL-2 gene transcription
Signature toxicity of cyclosporine
Show answerNephrotoxicity
Tacrolimus: mechanism of action
Show answerBinds FKBP, inhibiting calcineurin and blocking IL-2 transcription
Sirolimus (rapamycin): mechanism of action
Show answerBinds FKBP and inhibits mTOR, blocking the cellular response to IL-2
Unlike cyclosporine and tacrolimus, sirolimus causes ____ rather than nephrotoxicity.
Show answerpancytopenia and hyperlipidemia
Azathioprine: mechanism of action
Show answerA purine analog (prodrug of 6-mercaptopurine) that inhibits de novo purine synthesis, suppressing lymphocyte proliferation
Signature toxicity of azathioprine
Show answerBone marrow suppression
Mycophenolate mofetil: mechanism of action
Show answerInhibits inosine monophosphate dehydrogenase, blocking purine synthesis selectively in B and T lymphocytes
Basiliximab: mechanism of action
Show answerMonoclonal antibody that blocks the IL-2 receptor (CD25) on activated T cells
Signature toxicity of basiliximab
Show answerHypersensitivity reactions and edema
Cyclophosphamide: mechanism of action
Show answerAlkylates and cross-links DNA at guanine N7, requiring hepatic activation to its active form
Signature toxicity of cyclophosphamide
Show answerHemorrhagic cystitis, caused by the metabolite acrolein
Cisplatin: mechanism of action
Show answerCross-links DNA, triggering apoptosis in a cell cycle nonspecific manner
Cisplatin's dose-limiting toxicities are ____.
Show answernephrotoxicity and ototoxicity
Methotrexate: mechanism of action
Show answerInhibits dihydrofolate reductase, blocking regeneration of tetrahydrofolate and halting DNA synthesis

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