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- W2042832904 abstract "Brennand JE, Leask R, Kelly RW, Greer IA, Calder AA. Changes in prostaglandin synthesis and metabolism associated with labour, and the influence of dexamethasone, RU486 and progesterone. Eur J Endocrinol 1995;133:527–33. ISSN 0804–4643 The objective was to compare the changes in prostaglandin synthesis and metabolism occurring within the fetal membranes that are associated with the onset of parturition and to study the effect of steroid hormones on prostaglandin metabolism. A tissue explant study was made of discs of amnion and chorion obtained from 24 pregnant women at 37–42 weeks' gestation following spontaneous labour and delivery (12 women) and elective caesarean section (12 women). Significantly more prostaglandin E 2 (PGE 2 ) and PGE 2α were synthesized by amnion obtained following spontaneous labour than elective caesarean section. Arachidonic acid stimulated both PGE 2 and PGE 2α synthesis by amnion in both groups. Phorbol myristoyl acetate stimulated PGE 2 synthesis in both groups. There was no difference between the groups in the capacity of the chorion to metabolize prostaglandins. Mifepristone (RU 486) reduced the metabolism of added PGE 2 following spontaneous labour, while dexamethasone and progesterone had no effect on prostaglandin metabolism. In conclusion, the increase in concentration of PGE 2 and PGE 2α associated with the onset of spontaneous labour is the result of an increase in synthesis rather than a reduction in metabolism. There was no decrease in metabolism to account for the increase in prostaglandin concentrations and, with the exception of mifepristone, metabolism was not altered by the addition of steroid hormones. Janet Brennand, Department of Obstetrics and Gynaecology, Glasgow Royal Maternity Hospital, Rottenrow, Glasgow G4 ONA, UK" @default.
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- W2042832904 date "1995-11-01" @default.
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- W2042832904 title "Changes in prostaglandin synthesis and metabolism associated with labour, and the influence of dexamethasone, RU 486 and progesterone" @default.
- W2042832904 doi "https://doi.org/10.1530/eje.0.1330527" @default.
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