Reproduction Abstracts

Introduction: Selective progesterone receptor modulators (SPRMs) have been reported to decrease cell proliferation within uterine fibroids, and reduce menstrual blood loss. The SPRM Ulipristal Acetate (UPA) has an anti-proliferative effect on fibroid tissue, yet its impact on endometrial cell proliferation is not well understood. The aim of this study was to quantify the effects of the SPRM UPA administration on endometrial cell proliferation within the human endometrium.<...

Introduction: Uterine fibroids cause pain, pressure symptoms and heavy menstrual bleeding (HMB). Fibroid growth is sex steroid dependent. The selective progesterone receptor (PR) modulator (SPRM), ulipristal acetate (UPA) reduces fibroid size and alleviates HMB in 90% of women. UPA has both agonist and antagonist properties and induces (S)PRM-associated endometrial changes (PAEC). The mechanism of UPA action and aetiology of PAEC are unknown. We propose that modulation of ster...