RT Journal Article
SR Electronic
T1 Expression of Prostaglandin Metabolising Enzymes COX-2 and 15-PGDH and VDR in Human Granulosa Cells
JF Anticancer Research
JO Anticancer Res
FD International Institute of Anticancer Research
SP 3611
OP 3618
VO 29
IS 9
A1 MARC THILL
A1 STEFFI BECKER
A1 DOROTHEA FISCHER
A1 TIM CORDES
A1 AMADEUS HORNEMANN
A1 KLAUS DIEDRICH
A1 DARIUS SALEHIN
A1 MICHAEL FRIEDRICH
YR 2009
UL http://ar.iiarjournals.org/content/29/9/3611.abstract
AB Background: Prostaglandins (PGs) within the periovulatory follicle are essential for various female reproductive functions such as follicular development and maturation. In animal models, granulosa cells express the PG synthesizing enzyme cyclooxygenase-2 (COX-2) and the PG inactivating enzyme 15-hydroxyprostaglandin dehydrogenase (15-PGDH). First references suggest a correlation between vitamin D and prostaglandin metabolism through the impact of 1,25(OH)2D3 (calcitriol) on the expression of COX-2 and 15-PGDH. Materials and Methods: The expression of COX-2, 15-PGDH and the vitamin D receptor (VDR) in human granulosa cells (COV434, hGC and HGL5), which were originally isolated from different stages of follicular maturation, was determined by real-time PCR (RT-PCR) and Western blot analysis. Results: A positive correlation of COX-2 and VDR protein was found in the COV434 and HGL5 cells and an inverse correlation of 15-PGDH and VDR protein levels in all the investigated cell types. Conclusion: There may be a link between VDR, associated target genes and prostaglandin metabolism in human follicular maturation and luteolysis.