Claude Darcha

Endometriosis is defined as the presence of endometrial glands and stroma within extrauterine sites. Our previous study revealed an epithelial to mesenchymal transition (EMT)-like process in red peritoneal endometriosis, whereas membrane lo…

Background: During the development and progression of endometriotic lesions, excess fibrosis may lead to scarring, chronic pain, and altered tissue function. However, the cellular and molecular mechanisms of fibrosis in endometriosis remain…

Analysis of risk factors for the removal of normal ovarian tissue during laparoscopic cystectomy for ovarian endometriosis†

HOXA-10 expression in the mid-secretory endometrium of infertile patients with either endometriosis, uterine fibromas or unexplained infertility†

STUDY QUESTION: Can deep infiltrating endometriotic stromal cells (DES) sense changes in extracellular matrix (ECM) stiffness and respond to them? SUMMARY ANSWER: Soft matrices inhibit cell proliferation and inactivate the fibrotic phenoty…

STUDY QUESTION: How can deep endometriotic stromal cells proliferate and persist in a fibrotic environment? SUMMARY ANSWER: The serine/threonine kinase AKT and extracellular regulated kinase (ERK) signaling pathways may co-operate to suppo…

STUDY QUESTION: Is epigallocatechin-3-gallate (EGCG) treatment effective in the treatment of fibrosis in endometriosis? SUMMARY ANSWER: EGCG appears to have antifibrotic properties in endometriosis. WHAT IS KNOWN ALREADY: Histologically, …

Study question: To compare the pregnancy rate in patients submitted to FET (Frozen Embryos Transfer) of cleavage stage embryos (Group 1), or at the blastocyst stage (Group 2). Summary answer: Our data showed that the transfer of frozen blas…

BACKGROUND: Our previous studies suggested that aberrant activation of Wnt/ß-catenin signaling might be involved in the pathophysiology of endometriosis. We hypothesized that inhibition of Wnt/ß-catenin signaling might result in inhibition …

BACKGROUND: During the development and progression of endometriotic lesions, excess fibrosis may lead to scarring, chronic pain, and altered tissue function. However, the cellular and molecular mechanisms of fibrosis in endometriosis remain…

OBJECTIVE: To investigate adenosine triphosphate (ATP)-binding cassette transporter G2 (ABCG2) expression in endometriosis and in samples of endometrium from patients with and without endometriosis. DESIGN: Prospective study. SETTING: Uni…

BACKGROUND: Endometrium is derived from intermediate mesoderm via mesenchymal to epithelial transition (MET) during development of the urogenital system. By retaining some imprint of their mesenchymal origin, endometrial epithelial cells ma…

BACKGROUND: The objective of the present study was to expand our understanding of the role of matrix metalloproteinase-7 (MMP-7) in the pathophysiology of endometriosis. METHODS: Expression levels of MMP-7 mRNA and protein in the eutopic e…

CONTEXT: Only a few, small, human studies on E-cadherin and beta-catenin expression in normal cycling human endometrium have been reported. It remains unclear whether expression of these molecules might be altered in the endometrium of infe…

BACKGROUND: The aim of this study was to identify risk factors for the removal of normal ovarian tissue during laparoscopic cystectomy for endometriosis. METHODS: A total of 121 patients who had histologically confirmed ovarian endometrios…

BACKGROUND: The aim of this study was to investigate HOXA-10 expression in endometrium from infertile patients with different forms of endometriosis; with uterine fibromas, or with unexplained infertility and from normal fertile women. MET…

OBJECTIVE: To evaluate the effect of protein kinase C inhibition on surgically induced endometriosis in mice. DESIGN: Prospective, randomized study. SETTING: Academic facility. ANIMALS: Sixty adult female C57BJ6 mice. INTERVENTION(S): O…

Although malignant degeneration of cutaneous endometriosis is rare at only 0.3-1% in endometriosis surgical scars, diagnosis and management need to be defined. A case of malignant degeneration of perineal endometriosis is reported, with a r…

OBJECTIVE: To investigate whether WT1 protein expression is altered in eutopic endometrium of endometriosis patients. DESIGN: Prospective study. SETTING: University hospital. PATIENT(S): Patients with endometriosis and fertile women with…

BACKGROUND: The scarcity of human ovarian tissue is a major problem in developing research on ovarian cryopreservation. We were interested in ovarian cortex surrounding benign ovarian cysts harvested during their requisite operations. METH…