[The effect of amniotic fluid on bacteria]

Antibacterial activity of the amniotic fluid (performed by transabdominal amniocentesis) was analysed in 61 pregnant women between the 15th and the 42nd week of gestational age by using laboratory stocks of Escherichia coli, Pseudomonas aeruginosa and Klebsiella of human origin. It is stated that up to the 30th week of pregnancy the amniotic fluid does not exert any inhibition effect on the growth of Escherichia coli, Pseudomonas aeruginosa, or Klebsiella. After the 31st week the inhibition activity of the amniotic fluid in thee bacteria progressively (with the gestational age) intensifies.