The ovine cervix relaxes at estrus allowing easier entry of spermatozoa into the uterus. The
mechanism responsible for this relaxation is not fully elucidated and we hypothesized that …

During the periovulatory period, the cervix of the ewe relaxes and this mechanism is thought
to be mediated by oxytocin and prostaglandin E 2 (PGE 2) in response to increased …

The purposes of this study were to determine the separate and interactive functions of
progesterone and estradiol in regulating the cervical prostaglandin (PG) system in pregnant …

The aim was to investigate the histologic distribution of estrogen receptor α (ERα), oxytocin
receptor (OxR), LH receptor (LHR), and cyclooxygenase-2 (COX-2) in the cervix of the ewe …

There is a degree of cervical relaxation in the ewe at estrus that is regulated by changes in
prostaglandin synthesis, prostaglandin receptor expression, and changes in the cervical …

The aim of the present work was to study the oestrogen receptor (ER) and progesterone
receptor (PR) binding capacity and the oestrogen receptor alpha (ERα) mRNA concentration …

The use of transcervical artificial insemination in sheep is limited because of the anatomy of
the cervix, which restricts the passage of an inseminating pipette into the uterine lumen …

The cervix is a dynamic structure that undergoes dramatic changes during the estrous cycle,
pregnancy and parturition. It is well established that hormonal changes, including estrogens …

Prostaglandin E2 (PGE2) can cause softening of the bovine cervix at oestrus when receptors
for oxytocin (OT) are maximally present, indicating a relationship between OT and PGE2 …

Transcervical artificial insemination in sheep is limited by the inability to completely
penetrate the cervix with an inseminating pipette. Penetration is partially enhanced at estrus …