Progesterone is necessary to induce the progesterone receptors.
In a study with rats, in vitro research showed the ability of two vinclozolin metabolites to bind to the progesterone receptor.
These studies, however, were not stratified according to level of progesterone receptor in the primary tumor.
Determination of progesterone receptors in the primary tumor is encouraged, and entry onto an appropriate adjuvant trial (if receptor levels are high) should be considered.
As a hormone, 17OHP also interacts with the progesterone receptor.
There are progesterone receptors--areas on cells that receive progesterone-everywhere.
Just because the uterus is gone doesn't mean that the zillions of progesterone receptors elsewhere disappear, too!
He worked on the progesterone receptor and androgen receptor.
Nestorone acts primarily as a high-affinity agonist of the progesterone receptor.
It is incapable of aromatization and is not an agonist of the progesterone receptor.