31c - Brain Tumor ChemRx Flashcards

1
Q

MOA of carmustine

A

Nitrosourea. alkylator AND its decomposition products carbamoylate proteins to inhibit DNA repair

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2
Q

ADE of carmustine?

A

thrombocytopenia, leucopenia, pulmonary fibrosis, endocrine dysfunction
encephalopathy and seizures
elevated LFT and hyperbilirubinemia

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3
Q

MOA of temozolomide

A

DNA methylator. non-enzymatically activated pro-drug

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4
Q

ADE of temozolomide

A

N/v chills, fever, malaise, myalgia,

DOSE DEPENDENT myelosuppessive effects due to low MGMT production by hamtopoietic stem cells (they get killed)

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5
Q

Should chemo be used to treat brain mets?

A

lack of evidence to support treatment of patients with brain mets

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6
Q

What are mechanisms of brain tumor drug resistance?

A

BBB, epxression of PgP by metastatic cells, and astrocyte mediated resistance

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