Chemo Rx 2 Flashcards
List the sub-classes of the mitotic inhibitor class of chemo rx.
- vinka alkaloids
- -“taxanes”
Mitotic inhibitors are _____ (CCS/CCNS).
CCS → halt the M phase
Vinblastine is the most _______ (AE); Vincristine is the most ______(AE)
- myelosuppressive
- neurotoxic
(mn: Vinblastine BLASTS the bones; Vincristine CRISps the nerves”)
Mechanism of resistance to the mitotic inhibitors is via P-glycoprotein. Which mechanisms are specific to vinka alkaloids? “-taxanes”?
vinka: increase Rx efflux
“-taxanes”: mutate B-tubulin
The mitotic inhibitors halt M phase by targeting microtubules, how are the vinka alkaloids and the taxanes different in their MOA?
- vinka: inhibits tubulin polymerization
- taxanes: promote b-tubulin formation
(mn: “No Assemblies allowed in the vineyard; Taxes are Stable.”)
Which Taxane targets solid tumors? Which target non-small cell, head, neck, ovarian, bladder and breast?
- paclitaxel
- docetaxel
_______ (vinka alkaloid) targets lymphoma (hodgkins & NHL), breast and testicular cancer.
vinblastine
(most myelosuppressive)
_______ (vinka alkaloid) targets ALL, Hodgkin, leukemia & Wilms tumor?
Vincristine
(most neurotoxic)
Vinorelbine targets ______ (cancer)
solid tumors
(non-small cell lung, breast)
AE of the Taxanes (2)
- Myelosuppression
- hypersensitivity reaction (pre-treat w/corticosteroids & antihistamines)
(Docetaxel → neurotoxicity)
List the 2 sub-classes of the Topoisomerase Inhibitors (reduce supercoiling of DNA)
- Camptothecins
- Podophyllotoxins
(inhibiting the S phase)
What is the difference in the MOA between the Camptothecins and the Podophyllotoxins?
- camptothecin inhibits topoisomerase I
- podophyllotoxin inhibits topoisomerase II
(both cause strand to break from ⇣ supercoiling)
Which camptothecin treats metastatic colorectal cancer? Which treats ovarian?
- Irinotecan: colorectal
- Topotecan: ovarian
Which camptothecin has severe diarrhea as an adverse effect in addition to N/V & alopecia?
Irinotecan
(tx: metastatic colorectal CA)
Which of the topoisomerase inhibitors needs a dosage adjustment for renal dysfunction?
Etoposide (podophyllotoxin sub-class)
(tx: Lung CA & Lymphomas)
Which podophyllotoxin (sub-class of topoisomerase inhibitors) treats Lung CA & lymphoma? Which treats Acute Leukemia?
- Etoposide: Lung & Lymphoma
- Teniposide: Acute Leukemia
Which of the Antitumor ABX is CCS?
Bleomycin
(the other antitumor ABX are CCNS)
List the 3 anthracyclines (sub-class of antitumor ABX)
- Doxorubicin
- Daunorubicin
- Mitoxantrone
Doxorubicin & Mitoxantrone target solid tumors, specifically _____.
breast cancer
Which anthracyclines both treat AML?
- Daunorubicin
- Mitoxantrone
Doxorubicin treats breast cancer and _____.
(mitoxantrone tx breast CA also)
leukemia/lymphoma
Mitoxantrone treats breast CA, and ______(4).
- prostate
- AML
- NHL
- GE
Which antitumor ABX treats HL, testicular, head, neck and skin CA?
Bleomycin
(AE: pulmonary fibrosis & mucocutaneous rxn)