Definition

1. Noun:
   • A specific protein (cytokine): "tumor necrosis factor" is a proinflammatory cytokine produced primarily by certain white blood cells, including monocytes and macrophages. It plays a complex role in the immune system, capable of causing cell death in some tumors (an antineoplastic effect) but also involved in promoting inflammation, which can contribute to diseases.

Usage Examples

• Noun:
  • High levels of tumor necrosis factor are associated with the inflammation seen in rheumatoid arthritis.
  • Researchers are studying drugs that block tumor necrosis factor to treat autoimmune disorders.
  • The cytokine tumor necrosis factor can induce apoptosis in certain cancer cell lines.

Advanced Usage

• "Tumor necrosis factor-alpha (TNF-α)": This is the most common and specific form referred to in medical literature.

  • The patient's serum was tested for tumor necrosis factor-alpha.

• "TNF inhibitor": A class of drugs that block the action of this cytokine.

  • Her rheumatoid arthritis is managed with a TNF inhibitor.

Variants and Related Words

• TNF: A common abbreviation for "tumor necrosis factor."

  • The test measures TNF levels.

• Cachectin: An older, historical synonym for tumor necrosis factor, highlighting its role in wasting (cachexia).

  • Cachectin, now known as TNF, was first identified for its role in severe weight loss.

Synonyms

• Cytokine: A broad category of signaling proteins to which tumor necrosis factor belongs.
• TNF-α: The specific alpha form of this factor.

Related Phrases

• TNF receptor: The protein on a cell's surface that tumor necrosis factor binds to in order to exert its effects.

  • The drug works by binding to the TNF receptor.

• Anti-TNF therapy: A treatment approach using drugs that target tumor necrosis factor.

  • He started anti-TNF therapy for his Crohn's disease.

Noun

1. a proinflammatory cytokine that is produced by white blood cells (monocytes and macrophages); has an antineoplastic effect but causes inflammation (as in rheumatoid arthritis)