Pharmacologic Substance
tetrahydrouridine Audio
[ teh-truh-hy-droh-yoor-ih-deen ]
Subclass of:
Uridine
Definitions related to tetrahydrouridine:
  • A substance that makes tumor cells more sensitive to radiation therapy and is being studied in the treatment of cancer. It belongs to the families of drugs called cytidine deaminase inhibitors, multidrug resistance modulators, and radiosensitizers.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • A synthetic pyrimidine nucleoside analogue with biomodulating activity. Tetrahydrouridine increases the efficacy of the radiosensitizer cytochlor (5-chloro-2'-deoxycytidine) by inhibiting the enzyme deoxycytidine monophosphate (dCMP) deaminase and preventing the premature deamination of the cytochlor metabolite 5-chloro-2'-deoxycytidine monophosphate (CldCMP) to 5-chloro-2'-deoxyuridine monophosphate (CldUMP); in turn, this increases tumor concentrations of CldUMP which is then further anabolized and incorporated selectively into tumor DNA as CldU (5-chloro-2'-deoxyuridine). (NCI04)
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • An inhibitor of nucleotide metabolism.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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