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Abstract
The present study was undertaken to evaluate the effects of whole amniotic fluid (AF)
and fractions of AF on amnion cell prostaglandin E2 (PGE2) production. Amnion cells were grown to confluence and then incubated in the presence
of AF, or fractions thereof, obtained at 17–19 weeks gestation (MID), at term prior
to the onset of labor (NIL), and at term after spontaneous onset of labor (LABOR).
All whole AFs were stimulatory to amnion cell PGE2 production (p < 0.001) but the stimulation by NIL and LABOR AFs was significantly
greater (p < 0.001) than stimulation by the MID AF. Fractionation of the AFs from
the three groups (n=9–10 per group) revealed multiple discernable peaks of stimulatory
activity in each group. The majority of peaks had retention times that were similar
among the three groups, and peak stimulatory activities were greater in NIL and LABOR
samples than in MID samples.
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References
- Specific production of prostaglandin E2 by human amnion in vitro.Prostaglandins. 1978; 15: 377-382
- Prostaglandin output in relation to parturition by cells dispersed from human intrauterine tissues.J Clin Endocrinol Metal. 1983; 57: 694-699
- Stimulation of prostaglandin biosynthesis by urine of the human fetus may serve as a trigger for parturition.Science. 1983; 220: 521-522
- Endogenous stimulant of prostaglandin endoperoxide synthase activity in human amniotic fluid.Biochem Biophys Acta. 1985; 833: 397
- Stimulation of prostaglandin E2 production in amnion cells in culture by substance(s) in human fetal and adult urine.Biochem Biophys Res Commun. 1983; 114: 1056-1063
- Stimulation of prostaglandin E2 synthesis in human amnion cells maintained in monolayer culture by a substance(s) in amniotic fluid.Prostaglandins Leukotrienes Med. 1984; 15: 399-407
- A Comparison of human amnion tissue and amnion cells in primary culture by morphological and biochemical criteria.In Vitro. 1983; 19: 117-126
- Prostaglandin production by intra-uterine tissues from periparturient sheep: use of a superfusion technique.J Endocr. 1978; 76: 111-121
- Protein measurement with folin phenol reasent.J Biol Chem. 1951; 193: 265-275
- Stimulation of myometrial and decidual prostaglandin production by amniotic fluid from term, but not mid trimester pregnancies.Prostaglandins. 1983; 26: 973-981
- Prostaglandin biosynthesis stimulatory and inhibitory substances in human amniotic fluid during pregnancy and labor.Prostaglandins. 1985; 30: 13-19
Reddi K, Norman R J, Joubert S M. Differential regulation of prostaglandin production by inhibitors and stimulants in amniotic fluid during normal and dysfunctional labor. Prostaglandins 34: 477–491.
Article info
Publication history
Accepted:
August 14,
1990
Received:
June 21,
1990
Identification
Copyright
© 1991 Published by Elsevier Inc.