Definition

Noun: A toxic antimetabolite drug that inhibits cellular reproduction by acting as an antagonist to folic acid. It is used in chemotherapy to treat certain cancers, psoriasis, and rheumatoid arthritis.

Usage

This is a specialized medical term. It is used primarily in clinical, pharmacological, and oncological contexts to refer to a specific chemotherapeutic and immunosuppressive agent. * The patient's treatment regimen included a weekly dose of amethopterin. * Amethopterin is often administered to suppress the immune system in severe cases of rheumatoid arthritis.

Advanced Usage

• Pharmacological Class: Amethopterin is classified as an antimetabolite and a dihydrofolate reductase inhibitor.
• Clinical Administration: It is crucial to monitor renal function and blood counts during treatment with amethopterin due to its potential toxicity.

Variants and Related Words

• Methotrexate: This is the more common generic and brand name for amethopterin. "Amethopterin" is an older name, while "methotrexate" is the current standard term in most medical literature.
• MTX: A common abbreviation used in medical charts and prescriptions.

Synonyms

• Methotrexate
• Antifolate (describes its mechanism of action)

Notes on Different Meanings

This word has a single, specific meaning in medicine and pharmacology. It does not have general or figurative uses.

Noun

1. toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis