PMID: 7029235Jan 1, 1981Paper

Amniotic fluid activity against Bacteroides fragilis and group B streptococci

Medical Microbiology and Immunology
G Evaldson, C E Nord

Abstract

The antimicrobial capacity of amniotic fluid (AF) against B. fragilis, group B streptococci and Escherichia coli, the latter as a reference indicator, was investigated in samples from 30 patients. In order to study trimester as well as individual variations in the antibacterial activity, 10 individual samples from each trimester of pregnancy (AF1, AF2, AF3), were separately tested. With B. fragilis all trimester samples showed initial inhibition lasting for 8 h, the bacteria then regaining growth capacity in all AF1, and the majority of AF2 and AF3 specimens. However, 4 AF2 and 3 AF3 samples showed continued bacteriostatic activity for up to 24 h. Group B streptococci exhibited uninhibited growth in all trimester samples. The growth of E. coli in AF1 and AF2 was not inhibited, whereas in AF3 a temporary arrest was observed at 8 h, this being followed by growth to control levels at 24 h. The findings may explain the frequent isolation of B. fragilis from cases of septic abortions during the first trimester. Individual variation in the effectiveness of the antibacterial activity against B. fragilis in AF2 and AF3 may explain why this microorganism, which is often implicated in severe maternal and neonatal infections, is occasiona...Continue Reading

References

May 1, 1978·The Journal of Infectious Diseases·H ThadepalliE C Davidson
Aug 1, 1976·American Journal of Obstetrics and Gynecology·P S SchlievertR P Galask
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Feb 1, 1977·American Journal of Obstetrics and Gynecology·H ThadepalliE C Davidson
Aug 15, 1977·American Journal of Obstetrics and Gynecology·P C AppelbaumI Dhupelia
Aug 1, 1975·American Journal of Obstetrics and Gynecology·C J BakerM D Yow
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Jan 1, 1980·Medical Microbiology and Immunology·G EvaldsonC E Nord
Jan 1, 1977·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·H D RabinowitchC L Hedley

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Citations

Jun 1, 1985·Archives of Disease in Childhood·T VesikariR Nyman
Oct 1, 1982·British Journal of Obstetrics and Gynaecology·G R EvaldsonC E Nord
Oct 1, 1989·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·R MatorrasF Omeñaca
Aug 9, 2002·Journal of Perinatology : Official Journal of the California Perinatal Association·Arthur I EidelmanMichael S Schimmel
Aug 16, 2006·Journal of Applied Microbiology·G W Gould
May 22, 2021·Revista iberoamericana de micología·Sofia MarakiGeorge Samonis

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