Temozolomide

Pronunciation

Definition 1

A drug that is used to treat certain types of brain tumors in adults and is being studied in the treatment of other types of cancer. It belongs to the family of drugs called alkylating agents. Also called Temodar. (NCI Dictionary)

Definition 2

A triazene analog of dacarbazine with antineoplastic activity. As a cytotoxic alkylating agent, temozolomide is converted at physiologic pH to the short-lived active compound, monomethyl triazeno imidazole carboxamide (MTIC). The cytotoxicity of MTIC is due primarily to methylation of DNA at the O6 and N7 positions of guanine, resulting in inhibition of DNA replication. Unlike dacarbazine, which is metabolized to MITC only in the liver, temozolomide is metabolized to MITC at all sites. Temozolomide is administered orally and penetrates well into the central nervous system. (NCI Thesaurus)

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