Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression profiling of ovaries collected from wild type (WT) mice and progesterone receptor (PR) knock out mice


ABSTRACT: Previous studies have shown that PR is a critical regulator of ovulation. The PR-null mice (PRKO) failed to ovulate due to a failure in the rupture of the preovulatory follicles. To experimentally induce ovulation, the wild type and PR null mice (C57BL/6, 24–28 d old) were injected ip with 5 IU of PMSG and 48 h later by 5 IU of hCG. Ovaries were collected at 11 h and total RNA was analyzed using Affymetrix mouse arrays

ORGANISM(S): Mus musculus

SUBMITTER: Shanmugasundaram Nallasamy 

PROVIDER: E-GEOD-37354 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Ulipristal blocks ovulation by inhibiting progesterone receptor-dependent pathways intrinsic to the ovary.

Nallasamy Shanmugasundaram S   Kim Jaeyeon J   Sitruk-Ware Regine R   Bagchi Milan M   Bagchi Indrani I  

Reproductive sciences (Thousand Oaks, Calif.) 20120925 4


Ulipristal acetate (UPA), a progesterone receptor (PR) modulator, is used as an emergency contraceptive in women. Here, using a mouse model, we investigated the mechanism of action of UPA as an ovulation blocker. In mice, ovulation is induced ~12 hours following the treatment with exogenous gonadotropins, including human chorionic gonadotropin (hCG), which mimics the action of luteinizing hormone (LH). When administered within 6 hours of hCG treatment, UPA is a potent blocker of ovulation. Howev  ...[more]

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