Relationship between the production of prostaglandins and progesterone by luteinizing human granulosa cells

in Journal of Endocrinology
Authors:
RC Fowkes
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C Chandras
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EC Chin
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S Okolo
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DR Abayasekara
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AE Michael
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DOI:
https://doi.org/10.1677/joe.0.1710455
Volume/Issue:
Volume 171: Issue 3
Article Type:
Other
Page Range:
455–462
Online Publication Date:
01 Dec 2001
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Luteinizing granulosa cells synthesize high concentrations of progesterone, prostaglandin (PG) E(2) and PGF(2 alpha). The objective of this study was to explore the relationship between prostaglandin and progesterone output from human granulosa cells as they undergo functional luteinization in culture. Granulosa cells were partially purified from ovarian follicular aspirates and cultured at a density of 10(5) cells/ml in serum-supplemented DMEM:Ham's F(12) medium for 0, 1 or 2 days. Cells were then switched to serum-free medium for 24 h before measuring hormone concentrations in this spent medium by specific radioimmunoassays. Over the first 3 days in culture, PGF(2 alpha) and PGE(2) production declined progressively by up to 82+/-3% coincident with a 55+/-11% increase in progesterone output. In subsequent experiments, cells were treated for 24 h on the second day of culture with either 0.01 to 10 microM meclofenamic acid or with 10 microM and 100 microM aminoglutethimide. Meclofenamic acid inhibited synthesis of PGF(2 alpha) and PGE(2) by up to 70+/-9% and 64+/-7% respectively without affecting progesterone output. Likewise, 100 microM aminoglutethimide inhibited progesterone production by 62+/-6% without affecting concentrations of either PGF(2 alpha) or PGE(2). We have concluded that the progressive decline in prostaglandin production and the rise in progesterone output from luteinizing human granulosa cells occur independently of each other.

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Print ISSN:
0022-0795
Online ISSN:
1479-6805
Page(s):
8
Article Type:
Other
Print Publication Date:
01 Dec 2001
Online Publication Date:
01 Dec 2001