FINAL Chemo Tx Flashcards
MOA of cyclophosphamide
Attach akyl groups to DNA
•Either breaks or cross-link DNA strands so that the cell cannot read the DNA’s gene correctly, miscoding of base pairing
•Cytotoxic
•Cell cycle NON-specific: Effective at any phase but cells most susceptible late G1 and S phase.
cyclophosphamide is used for what CA
ovarian
breast
non-H lymphoma
d. Hormonal therapy is indented for
breast and testicular CA management
h. Neoadjuvant therapy
tx given BEFORE the primary tx to enhance efficacy of primary tx
Example is chemo or radiation prior to surgery for tumor removal
partial response to CA tx is defined as what
- at least 30% decrease in target lesions
Progressive disease (PD) is defined as
at least 20% increase in the target lesions or appearance of one or more new lesion
- neither sufficient shrinkage to qualify PR or PD
d. Stable disease (SD)
Duration of overall response
- progression free survival (PFS):
but
i. Could be progression free and die form the tx
chemo scheduling is based on
. Scheduling: 21-28 day cycles, based on pt’s body surface area ( calculated in m 2) and the amt of time it takes the bone marrow to recover ( around 28 days)
Synthesis of cell components needed for DNA
G1
DNA replicated
S phase
-RESTING AND NOT DIVIDING
G0
synthesis of cellular components required for mitosis
o G2
this drug is known for it’s ASE on the bladder caused by acrolein
Cyclophosphamide
hematuria, freq, irritation, fibrosis, massive hemorrhage, bladder CA
Hemorrhagic or nonhemorrhagic cystitis
can administer this drug to avoid toxic SE of cyclophosphamide or ifosfamide (alkyklating nonsepcific)
admin MercaptoEthane Sulfonate Na (MESNA) IV
binds to acrolein
MOA PLATINUM COMPOUNDS
” Similar to alkylating agents -bind DNA inter-strand crosslinks w/ platinum and inhibition
“ MOA: disrupts DNA synthesis
platin CA
LUNG
breast, ovarian, bladder, head/neck, esophageal, gastric, testicular
major ASE of cisplatin
RENAL TOX & electrolyte disturbances
“ N/V: severe and often intractable í give an antiemetic to offset
“ Ototoxicity: tinnitus & high pitched hearing
“ Peripheral neuropathy:
Probably one of the worst platin for emesis
cisplatin
Carboplatin (Paraplatin®, CBDCA®) used in what CA
” Ovarian
“ Lung
Oxaliplatin (Eloxatin®) is used specifically for this CA
” Colon/rectum stage 3 and usually used for stage 4
carboplatin ADE
less ADE than cisplatin
Thrombocytopenia limit 28 days
this chemo drug for
Neurotoxic dose limiting effects Assoc w/ both resp & neuropathy rxn –> Sensitivity to cold ❄️ ❄️ ❄️
ANTITUMOR ANTIBIOTICS
RUBY’S and bleo