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epipodophyllotoxin/vómito
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Combination chemotherapy of the epipodophyllotoxin derivatives, teniposide and etoposide. A pharmacodynamic rationale?
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Previous studies in vitro on the influence of extracellular protein binding of Teniposide (VM26) and Etoposide (VP16-213) on subsequent cellular uptake by experimental murine tumor cells [Cancer Res 38:2549 (1978); Drug Metab Rev 8:119 (1978)] suggested that a timed-sequential combination of VM26
A clinical trial of the oral form of 4'-demethyl-epipodophyllotoxin-beta-D ethylidene glucoside (NSC 141540) VP 16-213.
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A clinical trial of the oral form of VP 16-213 (NSC-141540), a semisynthetic podophyllotoxin, was undertaken. In 20 patients, treatment was started at 200 mg/day p.o. for 5 days; courses were repeated after a rest period of 16 days. Five patients were treated at the same dose, repeated with only
Etoposide: a semisynthetic epipodophyllotoxin. Chemistry, pharmacology, pharmacokinetics, adverse effects and use as an antineoplastic agent.
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Etoposide (VP 16) is a semi-synthetic derivative of 4'- demethylepipodophyllotoxin , a naturally occurring compound synthesized by the North American May apple (Podophyllum peltatum ) and the Indian species Podophyllum emodi Wallich . Although podophyllotoxins are classical spindle poisons causing
Phase I clinical and pharmacological study of 72-hour continuous infusion of etoposide in patients with advanced cancer.
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Etoposide (VP-16) is a semisynthetic epipodophyllotoxin that exhibits cell cycle phase specific cytotoxicity and enhanced effectiveness with increasing duration of drug exposure. We have therefore conducted a Phase I trial to determine the side effects, tolerable doses, and pharmacokinetic
Acute monocytic leukemia in children. Response to VP-16-213 as a single agent.
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Three patients were studied: two infants with acute monocytic leukemia who failed to respond to the initial combination therapy of daunorubicin with cytosine arabinoside, and an adolescent with relapsed acute monocytic leukemia. They were intensively treated with epipodophyllotoxin (VP-16-213) alone
4'-demethylepipodophyllotoxin 9-(4,6-o-2-thenylidene-beta-D-glucopyranoside) (NSC-122819; VM-26) and 4'-demethylepipodophyllotoxin 9-(4.6-0-ethylidene-beta-D-glucopyranoside) (NSC-141540; VP-16-213) in childhood cancer: preliminary observations.
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We evaluated the responses of 39 children with cancer who, after failure to respond to conventional chemotherapeutic agents, received either or both of two epipodophyllotoxins: 4'-demethylepipodophyllotoxin 9-(4,6-o-2-thenylidene-beta-D-glucopyranoside) (NSC-122819) and 4'-demethylepipodophyllotoxin
High-dose VP 16-213 (NSC 141540) for the treatment of patients with previously treated acute leukemia.
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Thirteen patients with relapsed acute leukemia, 12 adults with acute nonlymphocytic leukemia, and one child with acute lymphoblastic leukemia were treated with VP 16-213, an epipodophyllotoxin analog, at a dose of 200-300 mg/m2/day X5 as a 2-hour intravenous infusion. Only four patients achieved
The pharmacology of intravenous and oral etoposide.
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The epipodophyllotoxin derivative etoposide (VP-16) has been in widespread use both alone and in combination chemotherapy for the past decade. It has phase-specific cytotoxicity that acts in the last S and G2 phases of the cell cycle. Although its mode of action is not certain, it appears to act by
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