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Antimicrobic activity of the amniotic fluid
Clinical and Experimental Obstetrics & Gynecology
|January 1, 1981
Summary
Amniotic fluid exhibits antimicrobial activity early in pregnancy, challenging previous beliefs. This finding suggests a protective role for amniotic fluid against infections from the first trimester.
Area of Science:
- Obstetrics and Gynecology
- Immunology
- Perinatology
Background:
- Amniotic fluid (AF) is traditionally thought to have a defensive role against infections.
- This is attributed to immune components like immunoglobulins and factors such as lysozyme, transferrin, and zinc.
- Previous evidence for AF's antimicrobial activity was limited to the second half of pregnancy (after 20 weeks).
Purpose of the Study:
- To investigate the presence and extent of antimicrobial activity in amniotic fluid during early pregnancy.
- To challenge the established timeline for the onset of AF's protective functions.
Main Methods:
- Collection of amniotic fluid (AF) samples via early amniocentesis.
- Analysis of AF samples for antimicrobial activity.
Main Results:
- Antimicrobial activity was detected in a significant percentage (58.7%) of early AF samples.
- This demonstrates the presence of protective factors in amniotic fluid much earlier than previously documented.
Conclusions:
- Amniotic fluid possesses antimicrobial properties even in the early stages of pregnancy.
- This finding supports an earlier onset of the defensive function of amniotic fluid, potentially impacting fetal protection.