Étienne Marbaix

Estradiol and progesterone are key regulators of the menstrual cycle. In the human endometrium, progesterone induces morphological changes required for blastocyst implantation. Dysregulated response to progesterone can lead to endometrial p…

Abstract Study question What is the role of PGRMC1 in the human endometrium (especially in tissue remodeling) and its potential contribution to the development of endometrial diseases? Summary answer In primary endometrial stromal cell cult…

Teaching point: Unexplained persistent perineal pain poses a differential diagnosis, including pelvic nerve lesions. The rare occurrence of pelvic schwannoma is easily shown by a MRI as a T2-hyperintense enhancing mass.

The endometrium plays a crucial role in reproduction and, in humans, is cyclically remodeled under hormonal control. Estradiol favors tissue proliferation whereas progesterone inhibits tissue growth and induces morphological changes. Endome…

Endometriosis and adenomyosis are two frequent diseases closely linked, characterized by ectopic endometrium. Despite their benign nature, endometriosis and adenomyosis impair women's quality of life by causing pain and infertility and an i…

Abstract: Matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) are expressed in the human endometrium during the menstrual cycle, in particular to induce substantial extracellular matrix breakdown underlying …

Matrix metalloproteinases (MMPs) are key enzymes involved in extracellular matrix remodelling. In the human endometrium, the expression and activity of several MMPs are maximal during the menstrual phase. Moreover, MMPs are thought to be in…

Menstrual endometrial breakdown induced by estradiol and progesterone withdrawal is regularly attributed to vasospasm of spiral arteries causing ischemia and hypoxia. We investigated whether hypoxia actually occurred in an in vivo model of …

Coupling of focal degradation and renewal of the functional layer of menstrual endometrium is a key event of the female reproductive biology. The precise mechanisms by which the various endometrial cell populations control extracellular mat…

BACKGROUND: Menstruation is associated with a striking increase in matrix metalloproteinase (MMP) activity. However, it is still unknown whether the level of MMP activity correlates with the amount of menstrual bleeding. METHODS: We used h…

Ovarian remnant syndrome is a rare but known complication of bilateral salpingo-oophorectomy associated or not with hysterectomy. This complication is frequently related to a history of multiple surgery, pelvic inflammatory disease, or endo…

Curettage and endometrial ablation aggress the endometrium of menorragic women, thus decreasing the menstrual volume. Curettage only ablates the superficial layer of the endometrium and menorragia reappears in 50% of the cases at one year. …

Various matrix metalloproteinases (MMPs) participate in the menstrual breakdown of the human endometrium. MMP-9/gelatinase B is proposed as a major factor because it degrades many extracellular matrix constituents, including in the vasculat…

[Role of matrix metalloproteinases in the endometrium in normal and pathologic menstruation] Menstruation was thought to be the consequence of ischemic necrosis of the endometrium, resulting from vasoconstriction of the spiral arterioles. H…

Menstruation was thought to be the consequence of ischemic necrosis of the endometrium, resulting from vasoconstriction of the spiral arterioles. However, a new paradigm recently emerged when it was shown that human endometrium produces a l…

Irregular dysfunctional bleeding of the endometrium (ie, metrorrhagia without organic lesion) is common in women, whether treated or not with ovarian hormones. Several matrix metalloproteinases (MMPs) become normally expressed and/or activa…

Recent studies strongly suggest that matrix metalloproteinases (MMPs) play a key role in the initiation of menstrual bleeding in the human endometrium upon the fall of ovarian steroid serum concentrations by inducing the degradation of the …

The objective of this study was to analyse the histological and immunohistochemical characteristics of cultured explants of human endometrium transplanted into nude mice. Biopsies of eutopic endometrium were taken from six patients during l…

The endometrium is the only human tissue to undergo cyclic breakdown and regeneration. This physiological alternation renders it an advantageous system for studying tissue remodelling. Our previous observations indicate that menstrual endom…