alpha fetoprotein
Definition
Noun: * A protein produced by the fetal liver and yolk sac: Alpha-fetoprotein (AFP) is a substance normally present in high levels in the blood of a developing fetus. Its levels decrease after birth. In adults, elevated levels can be associated with certain liver diseases or cancers.
Usage
Alpha-fetoprotein is primarily used as a medical and biological term. * It is commonly discussed in the contexts of prenatal screening, oncology, and hepatology. * It is often abbreviated as AFP. * It is typically used as a non-count noun (e.g., levels of alpha-fetoprotein) but can be countable when referring to the molecule itself in technical contexts.
Examples
- Prenatal Screening:
- Medical Diagnosis:
- Research Context:
Advanced Usage
- Biomarker: In clinical practice, alpha-fetoprotein is a crucial serum biomarker. Its quantification is essential for diagnosis and monitoring.
- Example: The patient's alpha-fetoprotein levels are being tracked as a biomarker for treatment response.
- Oncofetal Antigen: Alpha-fetoprotein is classified as an oncofetal antigen because it is produced by fetal tissues and re-expressed by some types of tumors.
- Example: Like carcinoembryonic antigen, alpha-fetoprotein is a well-characterized oncofetal antigen.
Variants and Related Words
- AFP: The standard abbreviation for alpha-fetoprotein.
- Alpha-fetoprotein test: A specific test to measure AFP levels.
- Fetoprotein: The broader category of fetal proteins to which AFP belongs.
Synonyms
- AFP (the standard abbreviation, often used interchangeably in medical contexts).
- α-fetoprotein (an alternative spelling using the Greek letter alpha).
Related Phrases and Concepts
- Elevated AFP: A key phrase indicating levels above the normal reference range, which triggers further diagnostic investigation.
- Example: An elevated AFP in a non-pregnant adult warrants investigation of the liver.
- AFP-L3: A specific lectin-bound fraction of AFP that is used as a more specific biomarker for hepatocellular carcinoma.
- Neural tube defect screening: The primary clinical application of maternal AFP testing.
Noun
-
an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
Từ gần giống
