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Related Experiment Videos

Prostate-specific antigen immunoreactivity in amniotic fluid

H Yu1, E P Diamandis

  • 1Department of Clinical Biochemistry, Toronto Hospital, Ontario, Canada.

Clinical Chemistry
|February 1, 1995
PubMed
Summary
This summary is machine-generated.

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Prostate-specific antigen (PSA) is present in amniotic fluid, increasing with gestational age. This finding suggests PSA may play a role in fetal development and cancer regulation.

Area of Science:

  • Biochemistry
  • Reproductive Biology
  • Oncology

Background:

  • Prostate-specific antigen (PSA) is a serine protease primarily associated with the prostate.
  • Its role in fetal development and pregnancy is not well understood.

Purpose of the Study:

  • To determine the presence and concentration of PSA in amniotic fluid.
  • To investigate the relationship between amniotic fluid PSA levels and gestational age.

Main Methods:

  • Analysis of 115 amniotic fluid samples using a sensitive immunofluorometric assay.
  • Measurement of PSA in free and bound forms.
  • Correlation analysis with alpha-fetoprotein (AFP) and maternal serum PSA.

Main Results:

Related Experiment Videos

  • PSA was detected in all amniotic fluid samples.
  • Amniotic fluid PSA concentration increased with gestational age (11-21 weeks) and decreased at delivery.
  • Predominantly free PSA was observed, with a minor fraction bound to alpha 1-antichymotrypsin.
  • No significant correlation between PSA and AFP was found.
  • Pregnant women exhibited higher serum PSA than non-pregnant women.

    • Conclusions:

    • Amniotic fluid contains PSA, with levels changing throughout gestation.
    • PSA may function as a growth factor regulator in both fetal development and certain cancers.
    • Further research is needed to establish the source and precise role of PSA in pregnancy.