onco Flashcards

(38 cards)

1
Q

what are examples of cell cycle specific classes of drugs

A

antimetabolites
plant alkaloids

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2
Q

what are examples of cell cycle NON specific classes of drugs

A

alkylating agents
cytotoxic antibiotics

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3
Q

what are the 4 sub-class under alkylating agents

A

nitrogen mustards
ethylenimines
alkyl sulfonates
nitrosoureas

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4
Q

what are examples of drugs under this 4 sub classes

A

nitrogen mustard - cyclophosphamide
ethylenimines - thiotepa
alkyl sulfonates - busulfan
nitrosoureas - carmustine

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5
Q

what is the MOA of alkylating agents

A

binds to DNA - inducing breakage in dna strands

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6
Q

what is unique to nitrosoureas

A

can cross BBB due to high lipid solubility → can treat brain tumours

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7
Q

what are each of the drugs used for

A

thiotepa - ovarian cancer
busulfan - chronic myeloid leukemia
nitrosoureas - brain tumour
streptozocin - pancreas cancer

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8
Q

side effects of alkylating agents

A

myelosuppression
alopecia

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9
Q

what are examples of cytotoxic antibiotics

A

ANTHRACYCLINES ABX:
doxorubicin
daunorubicin

DACTINOMYCIN

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10
Q

what is the MOA of cytotoxic antibiotics

A

inhibits DNA and RNA synthesis
inhibits topoisomerase II enzyme → blocks DNA transcription and replication

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11
Q

side effects of cytotoxic antibiotics

A

cardiotoxicity
alopecia

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12
Q

MOA of dactinomycin

A

inhibits transcription and topoisomerase II

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13
Q

what are the two cell cycle specific classes of drugs

A

plant alkaloids
anti metabolites

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14
Q

what are the 4 subclasses of plant alkaloids

A

vinca alkaloids
podophyllotoxins
camptothecins
taxanes

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15
Q

what are examples of drugs from the 4 subclasses of plant alkaloids

A

vinca alkaloids - vinblastine
podophyllotoxins - etoposide
camptothecins - topotecan
taxanes - paclitaxel

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16
Q

what is the MOA of vinca alkaloids and which phase of the cell cycle does it act on

A

acts on the M phase

results in mitotic arrest, dissolution of mitotic spindle

17
Q

what are the side effects of vinca alkaloids

A

alopecia
myelosuppression
hyponatremia

18
Q

what type of cancers are vinca alkaloids used for

A

lymphomas and leukemias

19
Q

what is the MOA of podophyllotoxins

A

inhibits topoisomerase II
results in DNA damage through strand breakage

20
Q

what are the side effects of podophyllotoxins

A

myelosuppression
mucositis
GI tract toxicity

21
Q

what is etoposide used for

22
Q

what is the MOA of taxanes

A

interfere with the microtubule breakdown, thus affecting cell function as shortening is necessary for transport

23
Q

side effects of taxanes

A

myelosuppression
alopecia
neuropathy
allergies

24
Q

what are the 3 sub classes of drugs under anti-metabolites

A

folic acid analogs
purine analogs
pyrimidine analogs

25
what are examples of drugs under the 3 sub classes of anti metabolites
folic acid analog - methotrexate purine analogs - mercaptoguanine pyrimindine analogs - fluorouracil, gemcitabine
26
MOA of methotrexate (folic acid analog)
interrupts DNA and RNA synthesis
27
what are the therapeutic uses of methotrexate
breast, ovary, head & neck cancer ALL, RA, osteosarcoma psoriasis
28
what are the side effects of methotraxate
bone marrow suppression nephrotoxic
28
how to curb the side effects for methotraxate
bone marrow suppression - give folinic acid nephrotoxicity - give sodium bicarbonate
29
what is the MOA for 5-FU (fluororacil)
inhibits RNA processing
30
what are the side effects of 5-FU
myelosuppression mucositis dermatitis cardiac toxicity
31
what are 5-FU used for
ovary, cervix, bladder, prostate, pancreas and OP cancer
32
what is the MOA of gemcitabine
inhibits both DNA replication and repair
33
what are the side effects of gemcitabine
neutropenia N/V
34
what is gemcitabine used for
pancreatic cancer bladder, breast, kidney, cancer
35
what are targeted therapies
focuses on molecular and cellular changes specific to cancer
36
advantages of targeted therapies
increased therapeutic index increased drug selectivity improved drug distribution to tumours
37
limitations of targeted therapy
pathway dependence tumour heterogeneity resistance adverse effects