Pediatric Adrenal Carcinoma Medication
- Author: Lawrence C Wolfe, MD; Chief Editor: Robert J Arceci, MD, PhD more...
Medication Summary
Adjuvant or palliative treatment has been studied by using mitotane, cisplatin, etoposide, and doxorubicin. Mitotane leads to autodestruction of the adrenal cortex. Therefore, it is used in almost all protocols in the hope that it will decrease any autonomous hormone production and suppress tumor growth. Chemotherapy has focused on 3 antineoplastics given alone or in combination: cisplatin, etoposide, and doxorubicin. Studies have focused on etoposide and cisplatin or etoposide, doxorubicin, and cisplatin.
Antineoplastic agents
Class Summary
Cancer chemotherapy is based on an understanding of tumor cell growth and how drugs affect this growth. After cells divide, they enter a period of growth (phase G1), followed by DNA synthesis (phase S). The next phase is a premitotic phase (phase G2). Finally, a period of mitotic cell division (phase M) occurs.
Rates of cell division vary for different tumors. Most common cancers grow slowly compared with normal tissues, and the rate may decrease if tumors are large. This difference allows healthy cells to recover from chemotherapy more quickly than do malignant cells, and this is the rationale for current cyclic dosage schedules.
Antineoplastic agents interfere with cell reproduction. Some agents are specific to certain phases of the cell cycle, whereas others (eg, alkylating agents, anthracyclines, cisplatin) are not phase specific. Cellular apoptosis (ie, programmed cell death) is another potential mechanism of many antineoplastic agents.
Mitotane (Lysodren)
Decreases production of cortisol by causing adrenal atrophy and affecting mitochondria in adrenocortical cells. No pediatric standards or dosages established, and doses in children must be individualized.
Cisplatin (Platinol)
Inhibits DNA synthesis and, therefore, cell proliferation by causing DNA crosslinking and denaturation of double helix.
Doxorubicin (Adriamycin)
Cytotoxic anthracycline antibiotic isolated from cultures of Streptomyces peucetius var. caesius. Blocks DNA and RNA synthesis by inserting between adjacent base pairs and binding to sugar-phosphate backbone of DNA, inhibiting DNA polymerase. Binds to nucleic acids presumably by specific intercalation of anthracycline nucleus with DNA double helix. Can also cause DNA strand breakage because of effects on topoisomerase II.
Powerful iron chelator. Iron-doxorubicin complex induces production of free radicals that can destroy DNA and cancer cells.
Maximum toxicity during S phase of cell cycle.
Has multiphasic disappearance curve, with half-lives up to 30 h. Does not cross blood-brain barrier but taken up rapidly by heart, lungs, liver, kidney, and spleen.
Both mutagenic and carcinogenic. Dosage related to body surface area.
Antiproliferative drugs may be useful for patients with diffuse metastases to palliate symptoms.
Liposomes in different drug products can vary in chemical and physical properties, which can substantially affect functional properties.
Etoposide (Toposar, VePesid)
Glycosidic derivative of podophyllotoxin that exerts cytotoxic effect by stabilizing normally transient covalent intermediates formed between DNA substrate and topoisomerase II. Leads to single-strand and double-strand DNA breaks that arrest cellular proliferation in late S or early G2 phase of cell cycle.
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