Epipodophyllotoxins

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Chapter: Essential pharmacology : Anticancer Drugs

It is a semisynthetic derivative of podophyllotoxin, a plant glycoside. It is not a mitotic inhibitor, but arrests cells in the G2 phase and causes DNA breaks by affecting DNA topoisomerase II function. While the cleaving of double stranded DNA is not interfered, the subsequent resealing of the strand is prevented.


EPIPODOPHYLLOTOXINS

 

Etoposide

 

It is a semisynthetic derivative of podophyllotoxin, a plant glycoside. It is not a mitotic inhibitor, but arrests cells in the G2 phase and causes DNA breaks by affecting DNA topoisomerase II function. While the cleaving of double stranded DNA is not interfered, the subsequent resealing of the strand is prevented. It has been primarily used in testicular tumours, lung cancer, Hodgkin’s and other lymphomas, carcinoma bladder. Alopecia, leucopenia and g.i.t. disturbances are the main toxicity.

 

Dose: 50–100 mg/m2/day i.v. or oral for 5 days.

 

PELTASOL 100 mg in 5 ml inj., LASTET 25, 50, 100 mg cap, 100 mg/5 ml inj, ETOCID 50 mg cap, 100 mg/5 ml inj.

 

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