cytosine arabinoside
technicaltechnical/medical
Definition
Meaning
A chemotherapy medication used to treat certain cancers.
A pyrimidine nucleoside analog (ara-C) that inhibits DNA synthesis by interfering with DNA polymerase, primarily used in the treatment of acute leukemias and lymphomas.
Linguistics
Semantic Notes
The term is a compound noun. It is often abbreviated to 'ara-C' or 'cytarabine' in medical contexts. The full term explicitly names its chemical composition: a cytosine base linked to an arabinose sugar molecule.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling follows standard regional conventions for other words in the sentence.
Connotations
Purely technical and clinical with no regional connotative variation.
Frequency
Equally rare outside of oncology, haematology, and pharmacology contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
Treatment WITH cytosine arabinosideAdministration OF cytosine arabinosideResistance TO cytosine arabinosideVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “There are no common idioms for this highly technical term.”
Usage
Context Usage
Business
Rare, except in pharmaceutical company reports or investment discussions.
Academic
Common in medical, pharmacological, and oncology research papers and textbooks.
Everyday
Extremely rare. Used only by patients/families directly involved in specific cancer treatments.
Technical
The primary register. Used in clinical notes, treatment protocols, and scientific literature.
Examples
By Part of Speech
verb
British English
- The protocol is to cytarabine the patient over seven days.
- The leukaemia was cytarabined into remission.
American English
- The protocol is to administer cytarabine over seven days.
- The leukemia was treated with cytarabine.
adverb
British English
- The drug was administered cytarabine-style via continuous infusion.
American English
- The drug was administered in a cytarabine-like fashion via continuous infusion.
adjective
British English
- The cytarabine-based regimen was effective.
- We noted cytarabine-related toxicity.
American English
- The cytarabine-based regimen was effective.
- We noted cytarabine-related toxicity.
Examples
By CEFR Level
- This is a strong medicine for a serious illness.
- The doctor prescribed a drug called cytarabine for the cancer.
- Cytarabine, also known as cytosine arabinoside, is a common chemotherapy drug for leukaemia.
- The efficacy of high-dose cytosine arabinoside in consolidating remission for AML is well-documented, though it carries a significant risk of myelosuppression.
Learning
Memory Aids
Mnemonic
Think: 'Cytosine' (a DNA base) gets an 'Arabino' (sugar) 'side' attachment to become a drug that side-lines cancer cell division.
Conceptual Metaphor
A MOLECULAR IMPOSTOR / A KEY THAT JAMS THE LOCK (It mimics a natural DNA building block but prevents proper DNA assembly).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation into components like 'arabian' or 'side'. The term is a direct loan ('цитозин арабинозид') or 'цитарабин' (cytarabine) in medical Russian.
Common Mistakes
- Misspelling as 'arabinoside' or 'arabinoside'. Confusing it with other nucleoside analogs like 'gemcitabine'.
Practice
Quiz
What is the primary mechanism of action of cytosine arabinoside?
FAQ
Frequently Asked Questions
Yes, cytarabine is the International Nonproprietary Name (INN) for the drug, while cytosine arabinoside describes its chemical structure.
It is primarily used in the treatment of acute myeloid leukaemia (AML), acute lymphoblastic leukaemia (ALL), and some types of lymphoma.
Because it contains the sugar arabinose, as opposed to the ribose or deoxyribose sugar found in normal nucleosides. This structural difference is key to its function.
Common side effects include myelosuppression (low blood counts), nausea, mouth sores, and, at high doses, neurological toxicity such as cerebellar dysfunction.