Alpha-feto-protein during development and in disease.

Area of Science:

• Biochemistry
• Developmental Biology
• Oncology

Background:

• Alpha-feto-protein (AFP) is a conserved developmental protein found in various species, sharing similar properties and antigenic determinants.
• Its study offers insights into phase-specific antigens and gene activation mechanisms.
• In humans, fetal AFP levels decrease with maturity but persist in trace amounts postnatally and rise during pregnancy.

Purpose of the Study:

• To explore the significance of alpha-feto-protein (AFP) in health and disease across different species.
• To investigate the role of AFP as a biomarker in various medical conditions, including cancer and pregnancy.

Main Methods:

• Comparative analysis of AFP physicochemical properties and antigenic determinants across species.
• Detection and quantification of AFP levels in maternal blood, amniotic fluid, and patient serum using sensitive methods.
• Correlation of AFP levels with developmental stages, pregnancy, liver cancer, testicular/ovarian tumors, and hepatitis.

Main Results:

• AFP synthesis primarily occurs in the fetal liver and yolk sac.
• Increased AFP synthesis is observed in liver cancer cells and in patients with undifferentiated testicular and ovarian tumors.
• Elevated AFP levels in maternal serum and amniotic fluid are valuable for prenatal diagnosis of neural-tube defects and monitoring pregnancy abnormalities.

Conclusions:

• AFP serves as a crucial biomarker for various physiological and pathological conditions.
• Monitoring AFP levels aids in the diagnosis and prognosis of liver cancer, certain tumors, and pregnancy-related complications.
• AFP's conserved nature and distinct expression patterns make it a valuable tool in biomedical research and clinical diagnostics.